Re: Mainline kernel OLTP performance update

[Matthew Wilcox]

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."
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