leaking blocked processes in vmstat ... how to debug?

[Marc G. Fournier]

Up to 48 right now, and still nothing to show for it ...

On Mon, 26 Jun 2006, Marc G. Fournier wrote:

>
> k, this is getting ridiculous ... I'm going to upgrade my kernel to something 
> a bit newer then May 25th, which may (or may not) fix it, but:
>
> 0 28 0 8015508 175352   53   3   4   2 584   0  90   0  471 2299 1210  6  8 
> 86
> 0 28 0 8016704 174416   82   0   0   0  77   0  36   0  350 2191 1155  8  6 
> 86
> 1 28 0 8016772 167640   84   1   7   0  71   0  63   0  455 3119 1299 31  8 
> 61
> 0 28 0 8014456 166416   95   0   1   0 123   0  50   0  480 3463 1733 19  8 
> 73
>
> 28 blocked processes, according to the above, but according to ps, this is 
> all that is blocked, and the system ones seem to be the exact same ones 
> blocked on another system with only '6 blocked', and another with only '3 
> blocked', so I'm guessing those ones *aren't* counted in vmstat:
>
> # ps ax -O ppid,flags,mwchan | awk '$6 ~ /^D/ || $6 == "STAT"'
>  PID  PPID       F MWCHAN  TT  STAT      TIME COMMAND
>    2     0     204 -       ??  DL     0:03.20 [g_event]
>    3     0     204 -       ??  DL     0:29.32 [g_up]
>    4     0     204 -       ??  DL     0:40.29 [g_down]
>    5     0     204 -       ??  DL     0:00.00 [thread taskq]
>    6     0     204 -       ??  DL     0:00.00 [kqueue taskq]
>    7     0     204 -       ??  DL     0:00.00 [acpi_task0]
>    8     0     204 -       ??  DL     0:00.00 [acpi_task1]
>    9     0     204 -       ??  DL     0:00.00 [acpi_task2]
>   10     0     204 ktrace  ??  DL     0:00.00 [ktrace]
>   15     0     204 -       ??  DL     0:03.29 [yarrow]
>   25     0     204 psleep  ??  DL     0:13.55 [pagedaemon]
>   26     0     204 psleep  ??  DL     0:00.00 [vmdaemon]
>   27     0     20c pgzero  ??  DL     0:53.21 [pagezero]
>   28     0     204 psleep  ??  DL     0:00.81 [bufdaemon]
>   29     0     204 vlruwt  ??  DL     0:03.90 [vnlru]
>   30     0     204 syncer  ??  DL     0:59.74 [syncer]
>   31     0     204 sdflus  ??  DL     0:02.90 [softdepflush]
>   36     0     204 -       ??  DL     0:26.21 [schedcpu]
> 8803  8724    4002 biord   p6  D+     0:10.28 cvsup -L 1 -g /root/src
>
> So, where are the 28 blocked processes?  And its climbing ... I have a 
> 'vmstat 5' running right now, and its up to 30, but same process listing 
> (minus the cvsup this time) ... leakage somewhere?  Is there any way to debug 
> this?
>
> ----
> Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
> Email . scrappy at hub.org                              MSN . scrappy at hub.org
> Yahoo . yscrappy               Skype: hub.org        ICQ . 7615664
>

----
Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email . scrappy at hub.org                              MSN . scrappy at hub.org
Yahoo . yscrappy               Skype: hub.org        ICQ . 7615664