Performance question

Lindsay Snider lindsay at
Wed Oct 8 18:56:54 IST 2003

On Wednesday 08 October 2003 13:49, Alan Fiebig wrote:
> >What type of server is that? and especially.. how is the I/O subsystem
> >implemented ? Is that USCSI ?
> 1GB RAM, tmpfs using some as needed for  /usr/spool/MailScanner/incoming/
> Pent 4 2.4GHz processor, 512k cache
> 20GB ATA (100?) hard drive, 2MB cache
> Is there some method I can use to see if I'm IO bound? Some utility or
> test?

Try running:
vmstat 2
while doing your test.

If the blocks in/out are often above 2000 and/or the number of blocked 
processes on the left is often 1 or more, on an ide drive you may be i/o 
bound.  Does it speed up if you turn syslog off?  


> -Alan

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