vmstat 'b' (disk busy?) field keeps climbing ...

Marc G. Fournier scrappy at hub.org
Sat Jun 24 01:02:30 UTC 2006


On Fri, 23 Jun 2006, Matthew D. Fuller wrote:

> On Fri, Jun 23, 2006 at 07:12:54PM -0300 I heard the voice of
> Marc G. Fournier, and lo! it spake thus:
>>
>>     31750 vnode pager pageins
>>    209538 vnode pager pages paged in
>>     15954 vnode pager pageouts
>>    219494 vnode pager pages paged out
>
> This may be something to look at.  My workstation (~3.5 day uptime)
> has a fraction of that:
>
>     7204 vnode pager pageins
>    37609 vnode pager pages paged in
>        1 vnode pager pageouts
>        1 vnode pager pages paged out
>
> Compare to the number of processes spawned (I'm at 10x yours):
>
>>     28399  fork() calls
>>      1708 vfork() calls
>>         0 rfork() calls
>
>   282510  fork() calls
>    22164 vfork() calls
>        0 rfork() calls
>
>
> That sounds like hefty memory pressure.

Which is odd, no, if I'm hardly swapping?

# pstat -s
Device          1K-blocks     Used    Avail Capacity
/dev/da0s1b       8388608     3396  8385212     0%

----
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


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