Re: Mainline kernel OLTP performance update

[Pekka Enberg]

On Friday 16 January 2009 21:16:31 Pekka Enberg wrote:
>> I had lockdep enabled in my config so I ran the tests again with
>> x86-64 defconfig and I'm back to square one:
>>
>>   [ number of transactions per second from 10 runs, bigger is better ]
>>
>>                    min      max      avg      sd
>>   2.6.29-rc1-slab  802.02   805.37   803.93   0.97
>>   2.6.29-rc1-slub  807.78   811.20   809.86   1.05

On Fri, Jan 16, 2009 at 12:21 PM, Nick Piggin <nickpiggin@xxxxxxxxxxxx> wrote:
> Hm, I wonder why it is going slower with lockdep disabled?
> Did something else change?

I don't have the exact config for the previous tests but it's was just
my laptop regular config whereas the new tests are x86-64 defconfig.
So I think I'm just hitting some of the other OLTP regressions here,
aren't I? There's some scheduler related options such as
CONFIG_GROUP_SCHED and CONFIG_FAIR_GROUP_SCHED enabled in defconfig
that I didn't have in the original tests. I can try without them if
you want but I'm not sure it's relevant for SLAB vs SLUB tests.

                                Pekka
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