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Message-ID: <20081029095037.GA7973@ioremap.net> Date: Wed, 29 Oct 2008 12:50:37 +0300 From: Evgeniy Polyakov <zbr@...emap.net> To: Ingo Molnar <mingo@...e.hu> Cc: Mike Galbraith <efault@....de>, David Miller <davem@...emloft.net>, alan@...rguk.ukuu.org.uk, jkosina@...e.cz, akpm@...ux-foundation.org, a.p.zijlstra@...llo.nl, rjw@...k.pl, s0mbre@...rvice.net.ru, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: Re: [tbench regression fixes]: digging out smelly deadmen. On Wed, Oct 29, 2008 at 12:14:05PM +0300, Evgeniy Polyakov (zbr@...emap.net) wrote: > vanilla 27 : 347.222 > no TSO/GSO : 357.331 > no hrticks : 382.983 > no balance : 389.802 > 4403b4 commit : 361.184 > dirty_ratio-50 : 361.086 > no-sched-tweaks : 361.367 > > So, probably, if we revert -tip merge to vanilla .27, add nohrtick patch > and nobalance tweak _only_, and apply naive TSO patch we could bring > system to 400 MB/s. Note, that .22 has 479.82 and .23 454.36 MB/s. And now I have to admit that the very last -top merge did noticebly improve the situation upto 391.331 MB/s (189 in domains, with tso/gso off and naive tcp_tso_should_defer() hange). So we are now essentially at the level of 24-25 trees in my tests. -- Evgeniy Polyakov -- 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/
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