Date: Sun, 03 May 2015 19:13:26 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-net@FreeBSD.org Subject: [Bug 199174] em tx and rx hang Message-ID: <bug-199174-2472-YJNCZ2f4EO@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-199174-2472@https.bugs.freebsd.org/bugzilla/> References: <bug-199174-2472@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199174 --- Comment #11 from Sean Bruno <sbruno@FreeBSD.org> --- Did a couple of tests via iperf. test 1 #1 set hw.em.txd="4096" #2 set hw.em.rxd="4096" #3 ran with TSO enabled -- ran into hangs and debug output from watchdog as reporter and stated. -- seems to happen less frequently, once in 24 hour test test 2 #1 setup as test 1 #2 disable TSO (ifconfig em0 -tso) -- no hangs in 24 hours test test 3 #1 set hw.em.txd="256" #2 set hw.em.rxd="256" #3 reboot and leave TSO enabled -- ran into hangs and debug out from watchdog in minutes Hypothesis: -- TSO implementation isn't taking into consideration ring wrap events? -- You are receiving this mail because: You are the assignee for the bug.
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