Re: [patch 3/4] slab reclaim balancing

From: Manfred Spraul (manfred@colorfullife.com)
Date: Thu Sep 26 2002 - 09:13:28 EST


> Slab caches no longer hold onto completely empty pages. Instead, pages
> are freed as soon as they have zero objects. This is possibly a
> performance hit for slabs which have constructors, but it's doubtful.

It could be a performance hit for slab with just one object - e.g the
page sized names cache, used in every syscall that has a path name as a
parameter.

Ed, have you benchmarked that there is no noticable slowdown?
e.g. test the time needed for stat("."). on UP, otherwise the SMP arrays
would perform the caching.

--
	Manfred

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Mon Sep 30 2002 - 22:00:26 EST