Messages in this thread | | | Date | Tue, 10 Jul 2007 18:27:08 +1000 | From | Nick Piggin <> | Subject | Re: [patch 09/10] Remove the SLOB allocator for 2.6.23 |
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Pekka J Enberg wrote:
> Curious, /proc/meminfo immediately after boot shows: > > SLUB (debugging enabled): > > (none):~# cat /proc/meminfo > MemTotal: 30260 kB > MemFree: 22096 kB > > SLUB (debugging disabled): > > (none):~# cat /proc/meminfo > MemTotal: 30276 kB > MemFree: 22244 kB > > SLOB: > > (none):~# cat /proc/meminfo > MemTotal: 30280 kB > MemFree: 22004 kB > > That's 92 KB advantage for SLUB with debugging enabled and 240 KB when > debugging is disabled.
Interesting. What kernel version are you using?
> Nick, Matt, care to retest SLUB and SLOB for your setups?
I don't think there has been a significant change in the area of memory efficiency in either since I last tested, and Christoph and I both produced the same result.
I can't say where SLOB is losing its memory, but there are a few places that can still be improved, so I might get keen and take another look at it once all the improvements to both allocators gets upstream.
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