linux-kernel - Re: Mainline kernel OLTP performance update

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 16 Jan 2009 12:31:03 +0200
From:	"Pekka Enberg" <penberg@...helsinki.fi>
To:	"Nick Piggin" <nickpiggin@...oo.com.au>
Cc:	"Matthew Wilcox" <matthew@....cx>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Wilcox, Matthew R" <matthew.r.wilcox@...el.com>,
	chinang.ma@...el.com, linux-kernel@...r.kernel.org,
	sharad.c.tripathi@...el.com, arjan@...ux.intel.com,
	andi.kleen@...el.com, suresh.b.siddha@...el.com,
	harita.chilukuri@...el.com, douglas.w.styner@...el.com,
	peter.xihong.wang@...el.com, hubert.nueckel@...el.com,
	chris.mason@...cle.com, srostedt@...hat.com,
	linux-scsi@...r.kernel.org,
	"Andrew Vasquez" <andrew.vasquez@...gic.com>,
	"Anirban Chakraborty" <anirban.chakraborty@...gic.com>,
	"Christoph Lameter" <cl@...ux-foundation.org>
Subject: Re: Mainline kernel OLTP performance update

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@...oo.com.au> 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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/