[SunHELP] System Bottleneck

[Fletcher, Joe]

Well what do you know. I run a site that uses SPM but we use Compaq Alphas.
They beat the absolute
hell out of SPARCs. An fMRI image analysis that took 2 days on the Ultra II
based E6500 we now do in 6hrs. Knowing SPM my guess is that the system may
be swapping heavily. What's the spec of the system in terms of RAM, swap etc
and how are the data volumes mounted?

-----Original Message-----
From: darshan pai [mailto:darshanps at visto.com]
Sent: 20 September 2001 17:08
To: sunhelp at sunhelp.org
Subject: RE: [SunHELP] System Bottleneck


Actually We have Matlab on one of our SUN m/cs (ULTRA 80), preferable for
running one of our other programs (SPM) which requires matlab . 
Starting matlab is fine . But when i start spm the CPU utilization increases
to abt 90% . The system bcomes dead slow . 
Running vmstat shows a very high value of system calls

I think that means that thers a SYS bottleneck right ...

DP




-----Original Message-----
From:    Fletcher, Joe joe.fletcher at Metapack.com
Sent:    Thu, 20 Sep 2001 16:44:44 +0100
To:      sunhelp at sunhelp.org
Subject: RE: [SunHELP] System Bottleneck



Corkscrew? 

Sorry, couldn't resist.


What is the bottleneck and why do you think you have one? Usual solutions
are faster networks, more memory, bigger, faster disks, extra CPUS. Define
the problem a bit more.



-----Original Message-----
From: darshan pai [mailto:darshanps at visto.com]
Sent: 20 September 2001 16:36
To: sunhelp at sunhelp.org
Subject: [SunHELP] System Bottleneck


How do I release a System Bottleneck


DP
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Visit http://www.visto.com.
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MetaPack
The Lightwell 
12/16 Laystall Street 
Clerkenwell 
London EC1R 4PF 
Tel: +44 (0) 20 7843 6720 
Fax: +44 (0) 20 7843 6721
--------------------------------------------------------------------------
This email is confidential and proprietary; 
all information contained in it must be used only by the addressee in
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Disclosure, copying, and distribution to, or use by, anyone other than the
intended recipient is strictly prohibited and may be unlawful.