On 5/9/2010 11:28 PM, Claus Assmann wrote:
PS: you might want to run some of those disk I/O benchmarks
to determine the number of IOPs your system can provide.
Thanks, everyone, for your help. I followed Nick's advice and went in
the server room to watch the lights, and they're really not
On Tue, May 11, 2010 at 09:55:18AM -0400, Steve Shockley wrote:
On 5/9/2010 11:28 PM, Claus Assmann wrote:
PS: you might want to run some of those disk I/O benchmarks
to determine the number of IOPs your system can provide.
Thanks, everyone, for your help. I followed Nick's advice and went
On 5/11/2010 1:11 PM, Owain Ainsworth wrote:
Look at top, do you have particularly high cpu usage due to interrupts?
Thanks for the idea, but the interrupts in top are close to zero, in
fact both CPUs are generally over 90% idle.
On Tue, May 11, 2010, Steve Shockley wrote:
I also ran Jeff Ross' first dd test:
Sorry, but that's almost completely irrelevant for an MTA. The
important part for an MTA is IOPs. An MTA has to open/write/close/sync
queue files at a high rate, which means the number of FS meta
operations is
On Sun, 09 May 2010 21:33:07 -0400
Steve Shockley steve.shock...@shockley.net wrote:
What can I do to diagnose the performance bottleneck? The CPU is mostly
idle.
Common for all mail servers, since they're IO bound.
When I'm in a hurry, I usually fix sendmail by replacing it with postfix.
Steve Shockley wrote:
Perhaps, I'll see if I can find a similar machine and run some
benchmarks. Since most of what I have are ciss and cac, does anyone
have approximate disk benchmarks for U320 10k disks in RAID 1+0? I've
had good results with OpenBSD and ciss SAS controllers, but I think
A few days ago, I had an old Windows box that worked as an inbound mail
relay start to fail, so I figured I'd replace it with two OpenBSD boxes
in a CARP pool.
It's a big VMware shop, and I've mostly had good luck running OpenBSD
under ESX, so I set up two 4.6 amd64 VMs and put them into
Steve Shockley wrote:
A few days ago, I had an old Windows box that worked as an inbound mail
relay start to fail, so I figured I'd replace it with two OpenBSD boxes
in a CARP pool.
It's a big VMware shop, and I've mostly had good luck running OpenBSD
under ESX, so I set up two 4.6 amd64
On 5/9/2010 10:50 PM, Nick Holland wrote:
Look at the blinky lights on the hard disks? I know, macho admins
love to look at magical system parameters, but I usually solve such
problems by looking at the disk activity lights (and why I dislike Sun
and Macintosh systems). I suspect you are i/o
On Sun, May 09, 2010, Steve Shockley wrote:
A few days ago, I had an old Windows box that worked as an inbound
mail relay start to fail, so I figured I'd replace it with two
OpenBSD boxes in a CARP pool.
Oops... usually you replace 10 windows boxes with a single Unix server...
The site gets
What can I do to diagnose the performance bottleneck? The CPU is mostly
idle.
Have you tried an iostat?
http://www.openbsd.org/cgi-bin/man.cgi?query=iostatapropos=0sektion=0manpath=OpenBSD+Currentarch=i386format=html
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