Very fresh (two days ago) 10-current becomes completely
unresponsive under load
mav at FreeBSD.org
Tue Jan 10 23:35:50 UTC 2012
On 01/11/12 01:21, Lev Serebryakov wrote:
> Hello, Lev.
> You wrote 11 января 2012 г., 3:05:29:
>> OH! I have top running right now, when it "hangs". 0% idle time, LA
>> becomes 20 when it have only 35 processes at all, but there is no specific
>> process consuming CPU.
> Ok, it seems, that here is a problem (CPU time :
> PID USERNAME PRI NICE SIZE RES STATE TIME WCPU COMMAND
> 12 root -16 - 0K 8K sleep 18:35 30.18% ng_queue
> And after that 5 minutes without updates, than normal numbers. It
> seems, that root of problem is:
> (a) netgraph in this version of kernel
> (b) new mpd 5.6 (previous version had 5.5).
I remember no changes in mpd-5.6 that I would expect to cause this. Any
way it should be trivial to check -- just build 5.5.
What do you have configured in mpd configuration and netgraph at all?
AFAIR for plain PPPoE it is not very typical to use ng_queue at all as
it doesn't requires stack unwrapping and at least few years ago stack
size was sufficient to run all processing in one pass.
More information about the freebsd-current