Re: OT: high WIO on Linux

From: Mladen Gogala <gogala_at_sbcglobal.net>
Date: Wed, 15 Mar 2006 00:15:27 -0500
Message-Id: <1142399727l.5257l.0l@medo.noip.com>

On 03/14/2006 11:25:48 PM, Mark Brinsmead wrote:

> Are the depths of my I/O queues in any way "tunable" under Linux?

No, they're not. Very few things are tunable under Linux. Unfortunately, Linux has adopted the same philosophy as Windows: make intelligent decisions for user, based on non-existent "general case". In particular, it took out many memory regulation parameters, it doesn't allow tuning queue depth, it doesn't allow me to set quantum or control process swapping. Yes, you read correctly: I cannot define the amount of free memory which will trigger the system to start throwing out entire processes instead of simply speeding up page stealing. Expressed scientifically, Linux sucks.

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Mladen Gogala
http://www.mgogala.com

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Received on Tue Mar 14 2006 - 23:15:27 CST