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October 2009

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Subject:
Re: SL53 disk I/O is slow
From:
Konstantin Olchanski <[log in to unmask]>
Reply To:
Konstantin Olchanski <[log in to unmask]>
Date:
Wed, 14 Oct 2009 14:49:21 -0700
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On Wed, Oct 14, 2009 at 04:04:16PM -0500, Ken Teh wrote:
> I just installed SL5.3 on a Supermicro PDSBE motherboard and its disk i/o 
> is painfully slow; about 3MB/s.


3 Mbytes/sec is likely PIO speed. Means no driver for your SATA
interface in your SL kernel. Been there, with NVidia
chipsets, complained to RHEL, was told to wait, still waiting.

As solution, have been running vanilla Linux kernels, they tend
to have the right drivers, but could be tricky to build correctly
for running SL/RHEL userland.


-- 
Konstantin Olchanski
Data Acquisition Systems: The Bytes Must Flow!
Email: olchansk-at-triumf-dot-ca
Snail mail: 4004 Wesbrook Mall, TRIUMF, Vancouver, B.C., V6T 2A3, Canada

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