Memory leak on Linux

[moebassist]

On Linux, there's a small memory leak.

Over a period of 25 minutes, 3.2mb was lost.

When the BACnet server is running but no clients are polling for real-time data (e.g. it's just sat there) - memory is stable. When clients poll, it rises.

This could be a tough one to crack.....any thoughts?

[gralin]

3.2MB isn't much, this could be easily caused by extra resources allocated by the CLR. But if you want to check to make sure, you could try to dump memory from two points in time (forcing GC before each) and check new resources which have been allocated. If you find some that shouldn't be there, check what is holding the mand why there weren't collected. I don't have experience in doing this on Linux but maybe if you attach VS debugger to app running in container/VM you could use the build in memory profiler. There is also dotMemory version for Linux. Tess Ferrandez also wrote a whole article about other options: https://www.tessferrandez.com/blog/2021/03/18/debugging-a-netcore-memory-issue-with-dotnet-dump.html

[moebassist]

Over a 48 hour period my app has lost 27% memory. When the BACnet server is disabled, it sits happily at 19%.....forever.

Definitely a leak somewhere....I've started to trawl through it. The leak is small - I think this will be a nightmare to find since it could be in the BACnet stack, SharpPcap or mono. My hardware is an iMX6 with 1GB ram, so it's not really ideal for installing Rider and profiling with that.

[gralin]

Maybe do a similar test on different Linux machine with more resources? Or compare to a test without Mono by simply using .NET 5?

[scottpidzarko]

@moebassist did you eventually pinpoint the issue / confirm a leak?

Scott

[moebassist]

Hi Scott,

I didn't.....I force a garbage collection and that reclaimed the memory....I know this isn't a great idea but I didn't have the time to review the entire library, and I don't have the CPU power/memory for a decent profiling.

It could be the recursive connection.BeginReceive(OnReceiveData... since tasks aren't disposed....this is a wild guess though!

I made a few changes to this library:

• Removed dependency on SharpPCap.
• Issues as per No response to WhoIs on Linux #88
• Removed 'FindObject' and as much of the array creation/iteration as possible, replaced with dictionary e.g.:

//find in storage
var obj = FindObject(objectId);
if (obj == null)
    return ErrorCodes.UnknownObject;

//object found now find property
var p = FindProperty(objectId, propertyId);
if (p == null)
    return ErrorCodes.NotExist;

became:

if (!Objects.TryGetValue(objectId.instance, out clsBNObject obj)) return eBACnetErrorCodes.UnknownObject;
if (!obj.Properties.TryGetValue((int)propertyId, out clsBNProperty p)) return eBACnetErrorCodes.NotExist;

My application is dynamic...there could be a few hundred objects or a few thousand dependent upon config so I implemented dictionary use for simplicity, and it makes the storage class vary simple to use, since my dictionary keys are my BACnet object numbers.

One thing that was tricky - BACnet Multi States. are array based (1/2/3/4/5) whereas mine are enumerative, including gaps and negative numbers - e.g. an enumeration like this:

-1 : Error
0: Off
1 : On
4 : Failed

Is adjusted by adding the lowest absolute value+1:

1: Error
2: Off
3: On
4: (Not Used)
5: (Not Used)
6: Failed

Anthony.

[scottpidzarko]

Thanks Anthony for your prompt response, this will be really helpful. I am also dealing with a GB of RAM, in Mono, on a Linux kernel.

If it's running in production without major issues coming back to you about memory then that calms my fear of an actual leak down. Maybe when I finish my December deadline and things calm down for the holidays I'll spin up a virtual machine and try and replicate the memory climbing.

[moebassist]

I have a 1 minute timer that performs all sorts of actions; I just banged a GC.Collect() in there. It’s running 24/7 without issues.

Ant.

[YarekTyshchenko]

If GC can collect the memory then it doesn't sound like a leak. I'm sure the library could be made to do fewer allocations, but IMO as long as there's no leak, and it doesn't cause performance issue this isnt something to worry about

[TommyDuc]

Hi there,
We are using this library in a Yocto Linux build (Kirkstone) on an ARM64 machine with dotnet 8 and running BACnet v2.04.
We are also experiencing a memory leak.

I've ran dotnet-dump just after restarting the process and 24 hours after just before the process was about to crash (we've set a MaxMemory limit of ~300MB through the service file).

This allowed us to identify the classes of the responsible objects:

They all seem to be related to Task and System.IO.Ports.SerialStream

Looking at the gcroots of one of the Task objects:

HandleTable:
    0000ffff97b41338 (strong handle)
          -> ffbf760a49e0     System.Object[] 
          -> ffbf760a3d88     System.Threading.Tasks.Task 
          -> ffbf760a3d48     System.Action 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

Thread 16a:
    ffff7a00e250 ffff92c5fb54 System.IO.Ports.SerialStream.IOLoop()
        X19:
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

    ffff7a00e2e0 ffff8f6d643c System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
        X21:
          -> ffbf760a3d88     System.Threading.Tasks.Task 
          -> ffbf760a3d48     System.Action 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

    ffff7a00e330 ffff903b585c System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task ByRef, System.Threading.Thread)
        Fp+a8: 0000ffff7a00e3d8
          -> ffbf760a49e0     System.Object[] 
          -> ffbf760a3d88     System.Threading.Tasks.Task 
          -> ffbf760a3d48     System.Action 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

        Fp+b0: 0000ffff7a00e3e0
          -> ffbf760a3d88     System.Threading.Tasks.Task 
          -> ffbf760a3d48     System.Action 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

    ffff7a00e3f0 ffff903b5488 System.Threading.Tasks.Task.ExecuteEntryUnsafe(System.Threading.Thread)
        Fp+10: 0000ffff7a00e400
          -> ffbf760a49e0     System.Object[] 
          -> ffbf760a3d88     System.Threading.Tasks.Task 
          -> ffbf760a3d48     System.Action 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

        Fp+28: 0000ffff7a00e418
          -> ffbf760a3d88     System.Threading.Tasks.Task 
          -> ffbf760a3d48     System.Action 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

Thread 16b:
    ffff7960e260 ffff903e4200 System.IO.Ports.SerialPort.Read(Byte[], Int32, Int32)
        X19:
          -> ffbf760a1048     System.IO.Ports.SerialPort 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

Found 8 unique roots.

The other type of objects all have that same patern.

The reason I think this might come from BACnet is that we do not use any of those classes in our code, but only BACnet does, in particular System.IO.Ports.

I will try updating BACnet to the latest version and also setting DOTNET_GCHeapHardLimit and keep you updated.

[TommyDuc]

Hi there, We are using this library in a Yocto Linux build (Kirkstone) on an ARM64 machine with dotnet 8 and running BACnet v2.04. We are also experiencing a memory leak.

I've ran dotnet-dump just after restarting the process and 24 hours after just before the process was about to crash (we've set a MaxMemory limit of ~300MB through the service file).

This allowed us to identify the classes of the responsible objects:

They all seem to be related to Task and System.IO.Ports.SerialStream

Looking at the gcroots of one of the Task objects:

HandleTable:
    0000ffff97b41338 (strong handle)
          -> ffbf760a49e0     System.Object[] 
          -> ffbf760a3d88     System.Threading.Tasks.Task 
          -> ffbf760a3d48     System.Action 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

Thread 16a:
    ffff7a00e250 ffff92c5fb54 System.IO.Ports.SerialStream.IOLoop()
        X19:
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

    ffff7a00e2e0 ffff8f6d643c System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
        X21:
          -> ffbf760a3d88     System.Threading.Tasks.Task 
          -> ffbf760a3d48     System.Action 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

    ffff7a00e330 ffff903b585c System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task ByRef, System.Threading.Thread)
        Fp+a8: 0000ffff7a00e3d8
          -> ffbf760a49e0     System.Object[] 
          -> ffbf760a3d88     System.Threading.Tasks.Task 
          -> ffbf760a3d48     System.Action 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

        Fp+b0: 0000ffff7a00e3e0
          -> ffbf760a3d88     System.Threading.Tasks.Task 
          -> ffbf760a3d48     System.Action 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

    ffff7a00e3f0 ffff903b5488 System.Threading.Tasks.Task.ExecuteEntryUnsafe(System.Threading.Thread)
        Fp+10: 0000ffff7a00e400
          -> ffbf760a49e0     System.Object[] 
          -> ffbf760a3d88     System.Threading.Tasks.Task 
          -> ffbf760a3d48     System.Action 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

        Fp+28: 0000ffff7a00e418
          -> ffbf760a3d88     System.Threading.Tasks.Task 
          -> ffbf760a3d48     System.Action 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

Thread 16b:
    ffff7960e260 ffff903e4200 System.IO.Ports.SerialPort.Read(Byte[], Int32, Int32)
        X19:
          -> ffbf760a1048     System.IO.Ports.SerialPort 
          -> ffbf760a3708     System.IO.Ports.SerialStream 
          -> ffbf760a37e8     System.Collections.Concurrent.ConcurrentQueue<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760a3828     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760ac030     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760b50c0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7615de80     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761701b8     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf760c8918     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf761d6078     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf7625ad10     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf763632d0     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76558260     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76946620     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf79128658     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest> 
          -> ffbf76cf8140     System.Collections.Concurrent.ConcurrentQueueSegment<System.IO.Ports.SerialStream+SerialStreamIORequest>+Slot[] 
          -> ffbf79738c68     System.IO.Ports.SerialStream+SerialStreamIORequest 
          -> ffbf79738c98     System.Threading.Tasks.Task<System.Int32> 

Found 8 unique roots.

The other type of objects all have that same patern.

The reason I think this might come from BACnet is that we do not use any of those classes in our code, but only BACnet does, in particular System.IO.Ports.

I will try updating BACnet to the latest version and also setting DOTNET_GCHeapHardLimit and keep you updated.

So a little update on this.
I've forked the project, targeted only net8.0 and, and I think this is what was the issue, updated System.IO.Ports. There might have been other issues in our code base that started a lot of unneeded async and multi-threaded tasks, but I think this is the main issue. As of now, our bacnet service is stable after 24 hours.

Here's the modified project file if you're interested:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFrameworks>net8.0</TargetFrameworks>
    <Company>Ela-compil sp. z o. o.</Company>
    <Authors>Ela-compil and contributors</Authors>
    <Product>BACnet</Product>
    <Copyright>Copyright (c) Ela-compil sp. z o. o.</Copyright>
    <Description>BACnet protocol library for .NET</Description>
    <OutputType>Library</OutputType>
    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
    <PackageLicenseExpression>MIT</PackageLicenseExpression>
    <RootNamespace>System.IO.BACnet</RootNamespace>
    <GenerateAssemblyInfo>true</GenerateAssemblyInfo>
    <PackageTags>bacnet;btl;automation</PackageTags>
  </PropertyGroup>

  <ItemGroup>
    <None Include="logo.png" Pack="true" Visible="false" PackagePath="" />
  </ItemGroup>

  <!-- Vendor Packages -->
  <ItemGroup>
    <PackageReference Include="Common.Logging" Version="3.4.1" />
    <PackageReference Include="Common.Logging.Core" Version="3.4.1" />
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="System.IO.Ports" Version="9.0.5" />
    <PackageReference Include="PacketDotNet" Version="0.13.0" />
    <PackageReference Include="SharpPcap" Version="4.2.0" />
  </ItemGroup>
</Project>

[gralin]

This project is now updated and targets both .NET 8 and .NET 10, so it should be resolved. Please use version 4.0 onwards.