Date: Tue, 15 Dec 2009 12:55:27 +0100 From: Attila Nagy <bra@fsn.hu> To: Maxim Sobolev <sobomax@FreeBSD.org> Cc: src-committers@FreeBSD.org, svn-src-stable@FreeBSD.org, svn-src-all@FreeBSD.org, Stanislav Sedov <stas@FreeBSD.org>, svn-src-stable-7@FreeBSD.org, Tom Judge <tom@tomjudge.com> Subject: Re: svn: stable/7/sys: conf dev/bce Message-ID: <4B27792F.4050403@fsn.hu> In-Reply-To: <4B162C8E.3090507@FreeBSD.org> References: <200911151143.nAFBhTSD036619@svn.freebsd.org> <4B141D2E.1000203@FreeBSD.org> <4B142655.6030703@tomjudge.com> <4B14382F.5080000@FreeBSD.org> <20091130205141.2911011e.stas@FreeBSD.org> <4B14BF23.1030303@FreeBSD.org> <4B159540.9000503@fsn.hu> <4B162C8E.3090507@FreeBSD.org>
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Maxim Sobolev wrote: > Attila Nagy wrote: >> Maxim Sobolev wrote: >>> Stanislav Sedov wrote: >>>> On Mon, 30 Nov 2009 13:25:03 -0800 >>>> Maxim Sobolev <sobomax@FreeBSD.org> mentioned: >>>> >>>>> Can we change the name then? We've seen the similar issue without >>>>> the jumbo frames, which made me wonder. >>>> >>>> It's strange, because 'normal' frames are less than a page size in >>>> length, >>>> so the issue I was experiencing should not be reproducable with >>>> jumbo frames >>>> disabled. Can you describe a bit more what kind of problem you're >>>> experiencing? >>> >>> The traffic through interface abruptly halts randomly when under a >>> load, without any signs of a problem. What is interesting is that >>> the communication through unix domain sockets appears to be down >>> too, since some scripts that connect to database not able to >>> complete as well, so whatever this problem is it affect the whole >>> network subsystem. We tried to replace hardware and it did not help. >>> Only after we replaced bce(4) with IntelPro card (em) the problem >>> has went away. >> Sorry, I've just noticed this thread and did not read the earlier >> posts. I can see similar, although only (at least for now) on version >> 8 (running something around RC2), also with bce interfaces and >> "heavy" -in terms of pps, this is a DNS server- network load. >> >> Everything which involves network halts for some minutes, but the >> machine is completely usable from the console. top shows some >> processes (I don't have an output, but as far as I can remember they >> were only that which did network IO) in the "keglim" state. >> Then something happens and the machine starts to work again. >> >> Can this be the same, or is it completely different? > > It really looks like the same issue. Those boxes are heavy-duty VoIP > switches, so that they are handling high PPS as well in our case. > This is what I can see when the machine freezes (and in this case restarted, sadly this is a diskless machine): last pid: 86028; load averages: 0.53, 0.35, 0.27 up 0+05:23:37 12:49:15 47 processes: 2 running, 43 sleeping, 1 zombie, 1 lock CPU: 0.1% user, 0.0% nice, 0.1% system, 27.3% interrupt, 72.6% idle Mem: 3200M Active, 21M Inact, 221M Wired, 228K Cache, 43M Buf, 4471M Free Swap: PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 720 bind 1 64 0 3153M 3154M RUN 0 63:40 0.83% unbound 85972 root 1 60 0 37428K 10936K *udp 1 0:00 0.15% python 721 bind 3 44 0 70892K 24328K uwait 2 7:38 0.00% python2.6 2575 root 1 76 0 8212K 2376K pause 1 0:06 0.00% csh 556 root 1 44 0 14972K 1848K select 3 0:05 0.00% syslog-ng I can't type on already established ssh connections, and nothing comes out from the machine (for example via syslog). This is on 8-STABLE from yesterday... Thanks,
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