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* Fw: [Bug 213827] New: Stall In TCP/IP
@ 2021-07-22 22:16 Stephen Hemminger
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From: Stephen Hemminger @ 2021-07-22 22:16 UTC (permalink / raw)
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Date: Thu, 22 Jul 2021 22:03:50 +0000
Subject: [Bug 213827] New: Stall In TCP/IP
Bug ID: 213827
Summary: Stall In TCP/IP
Kernel Version: Observed 5.9.2. Confirmed on 5.12 and 5.13
Created attachment 298007
A basic repro of the observed issue.
We see an unexpected pause of 3-60 seconds where the test no longer receives
data, recv() is blocking, netstat shows data is sitting in the 7777 server's
send queue and 0 bytes are in the test's receive queue.
Setting net.core.rmem_max seems to be a key factor. For our testing we used
See attached README and repro.
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2021-07-22 22:16 Fw: [Bug 213827] New: Stall In TCP/IP Stephen Hemminger
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