System.Net.Sockets.Tests.SendPacketsAsync.SendPacketsElement_FileZeroCount_Success sometimes fails

[runfoapp]

Runfo Tracking Issue: System.Net.Sockets.Tests.SendPacketsAsync.SendPacketsElement_FileZeroCount_Success sometimes fails

Build	Definition	Kind	Run Name	Console	Core Dump	Test Results	Run Client
1553059	runtime	PR 63737	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1552952	runtime	PR 63441	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1552874	runtime	PR 62740	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1550460	runtime	PR 63726	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1550007	runtime	PR 63546	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1549369	runtime	PR 63696	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1548949	runtime	PR 63633	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1548671	runtime	PR 60368	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1547777	runtime	PR 63653	net6.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1547409	runtime	PR 62663	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1546282	runtime	PR 63200	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1544839	runtime	Rolling	net6.0-windows-Release-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1543936	runtime	PR 63558	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1543759	runtime	PR 63556	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1543618	runtime	PR 63445	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1543043	runtime	PR 63538	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1542765	runtime	PR 63320	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1542116	runtime	PR 63520	net6.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1541126	runtime	PR 63491	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1540432	runtime	PR 62663	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1540241	runtime	PR 63373	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1539554	runtime	PR 62663	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1538109	runtime	PR 62663	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1537712	runtime	PR 63410	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1534603	runtime	PR 62141	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1534132	runtime	PR 63200	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1534080	runtime	PR 62385	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1533865	runtime	PR 63316	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1533865	runtime	PR 63316	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1533736	runtime	PR 63313	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1533278	runtime	PR 63226	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1533023	runtime	PR 63112	net6.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1532939	runtime	Rolling	net6.0-windows-Release-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1531686	runtime	PR 63231	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1531595	runtime	PR 63259	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1530239	runtime	PR 63200	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1530089	runtime	PR 62663	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1529646	runtime	PR 63200	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1527655	runtime	PR 63156	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1526282	runtime	PR 63129	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1526233	runtime	PR 63128	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1524360	runtime	PR 62690	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1522824	runtime	PR 63015	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1522110	runtime	PR 63032	net6.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1519744	runtime	PR 62982	net7.0-windows-Debug-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1518054	runtime	PR 61196	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1517707	runtime	PR 62934	net7.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py
1517293	runtime	Rolling	net7.0-windows-Release-x86-CoreCLR_release-Windows.7.Amd64.Open	console.log			runclient.py
1515094	runtime	PR 62757	net6.0-windows-Debug-x64-CoreCLR_release-Windows.11.Amd64.ClientPre.Open	console.log			runclient.py

Build Result Summary

Day Hit Count	Week Hit Count	Month Hit Count
3	17	47

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Issue Details

---

Runfo Creating Tracking Issue (data being generated)

Author:	runfoapp[bot]
Assignees:	-
Labels:	area-System.Net.Sockets, untriaged
Milestone:	-

[agocke]

@danmoseley This appears to be flaky. Could we get retry enabled for this test?

[danmoseley]

@karelz ? (BTW, what granularity do we enable retries? I had assumed it was eg "all networking tests")

[danmoseley]

@antonfirsov just noting they're not all Windows 11.

[antonfirsov]

Ah yeah missed that there are a bunch of Win-7 failures too. Interestingly Win7 only started to fail after 10-06. SendPacketsElement_FileStreamMultiPartMixed_MultipleFileStreams_Success (#58898) has the same pattern now, win7 failures appeared after 10-06.

@MattGal are you aware of any OS updates or any other changes to the Win7 queues around that date?

[MattGal]

Ah yeah missed that there are a bunch of Win-7 failures too. Interestingly Win7 only started to fail after 10-06. SendPacketsElement_FileStreamMultiPartMixed_MultipleFileStreams_Success (#58898) has the same pattern now, win7 failures appeared after 10-06.

@MattGal are you aware of any OS updates or any other changes to the Win7 queues around that date?

Yes, we did change the image that day. Also, you can also tag @dotnet/dnceng for greater visibility if needed such as when I am out of the office.

On that day we moved from using Server 2008 R2 images from the Azure Gallery to "homemade" Win7-SP1-Enterprise "N" SKU images, because the 2008 ones had been removed from the Azure gallery, which blocks us from regenerating them. We will likely need to change one more time if and when we find the "long term, private support" version of Windows 7 images, but this change was unfortunately not one made by choice.

• If you need assistance getting a repro machine via the HelixReproVMs DTL, ping us on the .NET Core Engineering "First Responders" channel and we'll do our best to unblock you.
• If there is a configuration problem with this image that should be addressed (it ostensibly has the same artifacts, but started from a different base image), please file an issue on the dotnet/core-eng repo and tag me so I can make sure it get addressed.
• One interesting thing about the "N" SKU of windows (not a choice, it's the image we had) is the exclusion of Internet Explorer from the image. This does have some impact on networking behavior for .NET / Powershell and might be a relevant clue.