RE: Looking for the cause of poor I/O performance

Gigabit!  Lucky :)

I want a Gigabit switch for Christmas!  And a few PCI cards too!

Of course, with Gigabit, I would want/need a better Linux system too!  With
PCI-express and ...  I better wake up and go to bed!  :)

Guy

-----Original Message-----
From: linux-raid-owner@vger.kernel.org
[mailto:linux-raid-owner@vger.kernel.org] On Behalf Of TJ
Sent: Friday, December 03, 2004 1:33 AM
To: linux-raid@vger.kernel.org
Cc: Guy
Subject: Re: Looking for the cause of poor I/O performance

My linux system is a P3-500 with 2 CPUs and 512 Meg RAM.  My system is

much

faster than my network.  I don't know how your K6-500 compares to my
P3-500. But RAM may be your issue.  That amount of ram seems very low.

Are

you swapping?  What is your CPU load during the tests?  If you are at

100%,

then you are CPU bound.

You've got a dual CPU setup, mine is only single. I'll bet you have a server

chipset too. Still, I have serious doubts that the CPU is at fault. My guess

would be that this could be a VIA chipset problem. The load averages while 
running these tests are allways well below 1. 

I mistyped the amount of memory. I have approx 409 MB. I am not swapping. 

Your disk performance is faster than a 100BaseT network.  So, your
performance may not be an issue.

The network is gigabit, with a crossover to the client machine. I used ttcp
to 
verify that the link is capable of over 146 MB/sec.

TJ
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