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Date: Thu, 23 Jan 2003 22:18:33 -0800
From: "Martin J. Bligh" <mbligh@aracnet.com>
To: GrandMasterLee <masterlee@digitalroadkill.net>
cc: Austin Gonyou <austin@coremetrics.com>, linux-kernel@vger.kernel.org
Subject: Re: Using O(1) scheduler with 600 processes.
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>> > I've heard some say that O(1) sched can only really help on systems with
>> > lots and lots of processes.
>> > 
>> > But my systems run about 600 processes max, but are P4 Xeons with HT,
>> > and we kick off several hundred processes sometimes. (sleeping to
>> > running then back) based on things happening in the system. 
>> > 
>> > I am possibly going to forgo putting O(1)sched in production *right now*
>> > until I've got my patch solid. But I got to thinking, do I need it at
>> > all on a Oracle VLDB?
>> > 
>> > I think yes, but I wanted to get some opinions/facts before making that
>> > choice to go without O(1) sched.
>> 
>> How many *processors*? Real ones.
> 
> Quad P4 Xeon. Dell 6650

I'd say you definitely want O(1) sched then (or just run -aa or something).
But why don't you just try it and see?

M.


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