svn: stable/7/sys: conf dev/bce
Attila Nagy
bra at fsn.hu
Tue Dec 15 11:55:36 UTC 2009
Maxim Sobolev wrote:
> Attila Nagy wrote:
>> Maxim Sobolev wrote:
>>> Stanislav Sedov wrote:
>>>> On Mon, 30 Nov 2009 13:25:03 -0800
>>>> Maxim Sobolev <sobomax at 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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