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DateWed, 28 Apr 2004 22:55:42 -0500 (CDT)
FromBrent Cook <>
SubjectRe: pdflush eating a lot of CPU on heavy NFS I/O
On Wed, 28 Apr 2004, Trond Myklebust wrote:

> On Wed, 2004-04-28 at 16:39, Brent Cook wrote:
> > > Could you please capture the contents of /proc/meminfo and /proc/vmstats
> > > when it's happening?
> > >
> > > Thanks.
> > >
> >
> > Here is the top of top for one machine:
> >
> >  15:36:55  up  7:09,  1 user,  load average: 1.00, 1.00, 1.00
> > 48 processes: 46 sleeping, 2 running, 0 zombie, 0 stopped
> > CPU states:   0.1% user  99.8% system   0.0% nice   0.0% iowait   0.0% idle
> > Mem:   256992k av,  117644k used,  139348k free,       0k shrd,   36464k buff
> >         50968k active,              51592k inactive
> > Swap:  514040k av,       0k used,  514040k free                   61644k cached
> >
> >   PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU COMMAND
> >     7 root      25   0     0    0     0 RW   99.4  0.0 415:26   0 pdflush
>
> Could you please also supply the mount options you are using as well as
> the contents of /proc/mounts corresponding to your NFS partition.
>
> Cheers,
>   Trond

Here is /proc/mounts on the aforementioned test system:

rootfs / rootfs rw 0 0
/dev/root / reiserfs rw 0 0
devpts /dev/pts devpts rw 0 0
proc /proc proc rw,nodiratime 0 0
none /sys sysfs rw 0 0
usbfs /proc/bus/usb usbfs rw 0 0
ozma:/home /home nfs rw,v3,rsize=8192,wsize=8192,hard,udp,lock,addr=ozma 0 0

 - Brent
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