Re: Problem with the O(1) scheduler in 2.4.19

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Mon Sep 02 2002 - 08:07:13 EST


On Sun, 2002-09-01 at 22:53, Tobias Ringstrom wrote:
> While the O(1) scheduler has performed very well for me in most
> situations, I have one big problem with it. When running a Counter-Strike
> game server on Linux 2.4.19 with the sched-2.4.19-rc2-A4 patch applied,
> the server process is niced from the default value of 15 (interactive) to
> 25 (background). This means that every time crond wakes up or a mail
> arrives the game latency becomes extremely bad and the users experience
> lag.
>
> The process takes around 70% CPU on these occasions, so I'm surprised that
> the task is not considered to be interactive.
>
> This does not happen with stock 2.4.19. Do you have any ideas why this
> regression is happening?

It isnt a regression, its a bug fix. The nice value is now being
honoured properly.

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