Ok, more details for you :)
Redhat linux 6.2
# vmstat
procs memory swap io system
cpu
r b w swpd free buff cache si so bi bo in cs us sy
id
3 0 0 948 2404 293164 48640 0 0 0 2 4 11 7 10
10
# free
total used free shared buffers cached
Mem: 387460 384376 3084 11884 292932 47992
-/+ buffers/cache: 43452 344008
Swap: 527828 948 526880
Currently there are 5 client readers (The server is not used very much)
The server recently expired, so only 4Gb of the 35 Gb spool is used
Is there any other information you need?
----
Chris Picton
BTG Networks Systems Developer
Chris.Picton@BTGNet.net
> -----Original Message-----
> From: Jaye Mathisen [mailto:mrcpu@internetcds.com]
> Sent: Friday, April 20, 2001 11:27 AM
> To: Chris Picton
> Subject: Re: NNTPC: Performance
>
>
> Why don't you run iostat and vmstat on your system and see
> what's really
> going on?
>
> If the disk system is busy, then generally, CPU time doesn't
> accumulate while
> the process waits for I/O's to complete. On the other hand,
> maybe you're paging/thrashing.
>
> But you don't say how many simultaneous readers you have, or
> how much traffic
> you're moving through it, nor OS version, or system config,
> so anything
> specific would be engaging in random speculation.
>
> On Fri, Apr 20, 2001 at 11:19:08AM +0200, Chris Picton wrote:
> > Hi
> >
> > I'm runnning into a bit of a problem on our nntpcache machine
> >
> > The main nntpcache process seems to stay at about 90% cpu
> usage (PII 350)
> >
> > I am beginning to suspect the disk drives as causing a
> bottleneck here.
> >
> > I have a 35 Gig spool for the news articles mounted on
> > /usr/local/var/nntpcache.
> >
> >
> > In nntpcache.config, I have cacheDir set to
> /usr/local/var/nntpcache/
> >
> > The history files are in /usr/local/var/nntpcache
> > The cached news articles are in
> /usr/local/var/nntpcache/news.upstream.net.
> >
> > If I were to change the history file to be on a different
> scsi disk, would
> > this improve my performance?
> > eg set historyFile to
> /usr/local/var/nntpcache/history/cache.history, and
> > mount another scsi on /usr/local/var/nntpcache/history.
> >
> > Would there be any other reason for nntpcached to be using
> so much cpu?
> >
> > Regards
> >
> > ----
> > Chris Picton
> > BTG Networks Systems Developer
> > Chris.Picton@BTGNet.net
> >
> >
>
