Re: [PATCH] improve OProfile on many-way systems

[John Levon]

On Sat, Aug 21, 2004 at 06:06:31PM -0400, Jesse Barnes wrote:

> I'll give it a go on Monday, when I have some more time reserved on the 512p 
> system.  Last time I tried enabling oprofile, the system wouldn't boot or at 
> least got so slow that I didn't want to wait for it (i.e. init started, but 
> the system pretty much hung part way through the init scripts).

That must be profile_rwsem in kernel/profile.c since the rest of the
code won't be doing anything. I imagine it needs RCUing.

> If it boots, I'll try collecting some info.  John, will the oprofile tools in 
> RHEL3 work with 2.6.8.1-mm3 + these patches?

No idea, I don't have time to track what Red Hat do or don't use. I
recommend oprofile CVS or the last release.

john
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