Re: [patch 3/4] slab reclaim balancing

[William Lee Irwin III]

At some point in the past, Ed Tomlinson wrote:
>> 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. 

On Thu, Sep 26, 2002 at 04:13:28PM +0200, Manfred Spraul wrote:
> 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.

This might need testing on large-memory 64-bit boxen for that, since
ZONE_NORMAL pressure outweighs many other considerations on my boxen.

Cheers,
Bill