svn: stable/7/sys: conf dev/bce

Attila Nagy bra at
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> 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  
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

  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% 
 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% 

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...


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