Re: Sluggish machine under 2.6.14 and 2.6.15-rc5

From: Richard Purdie
Date: Fri Dec 09 2005 - 05:00:00 EST


On Wed, 2005-12-07 at 18:06 +0000, Richard Purdie wrote:
> ip8212 ide ports). I therefore installed 2.6.15-rc5 which ran badly and
> made the machine slow and sluggish. 2.6.14 shows the same speed issue.
> 2.6.13 runs just as well as 2.6.12 does.

The issue was configuration. Somehow my use of make oldconfig had set a
number of debug options which started out unset. The spinlock changes of
2.6.13-git11 must have changed the overhead of spinlock debugging which
was the cause of the the slowdown I saw when comparing versions.

2.6.15-rc5 runs fine now.

Richard

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