Re: Mainline kernel OLTP performance update

Matthew Wilcox
2009-01-15T13:52:41Z

On Thu, Jan 15, 2009 at 11:46:09AM +0200, Pekka Enberg wrote:
> It would also be nice if someone could do the performance analysis on
> the SLUB bug. I ran sysbench in oltp mode here and the results look
> like this:
>
> [ number of transactions per second from 10 runs. ]
>
> min max avg sd
> 2.6.29-rc1-slab 833.77 852.32 845.10 4.72
> 2.6.29-rc1-slub 823.61 851.94 836.74 8.57
>
> And no, the numbers are not flipped, SLUB beats SLAB here. :(

Um. More transactions per second is good. Your numbers show SLAB
beating SLUB (even on your dual-CPU system). And SLAB shows a lower
standard deviation, which is also good.

--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."