From: Ingo Molnar <mingo@elte.hu>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Lin Ming <ming.m.lin@intel.com>, Mike Galbraith <efault@gmx.de>,
"Zhang, Yanmin" <yanmin_zhang@linux.intel.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Dhaval Giani <dhaval@linux.vnet.ibm.com>,
Miao Xie <miaox@cn.fujitsu.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] sched: release buddies on yield
Date: Tue, 11 Nov 2008 11:57:43 +0100 [thread overview]
Message-ID: <20081111105743.GC15645@elte.hu> (raw)
In-Reply-To: <1226400753.7685.1506.camel@twins>
* Peter Zijlstra <peterz@infradead.org> wrote:
> Clear buddies on yield, so that the buddy rules don't schedule them
> despite them being placed right-most.
>
> This fixed a performance regression with yield-happy binary JVMs.
>
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
> Tested-by: Lin Ming <ming.m.lin@intel.com>
> ---
> kernel/sched_fair.c | 17 ++++++++++++-----
> 1 files changed, 12 insertions(+), 5 deletions(-)
applied to tip/sched/urgent, thanks guys!
Ingo
next prev parent reply other threads:[~2008-11-11 10:58 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-09 19:40 2.6.28-rc3-git6: Reported regressions 2.6.26 -> 2.6.27 Rafael J. Wysocki
2008-11-09 19:40 ` [Bug #11207] VolanoMark regression with 2.6.27-rc1 Rafael J. Wysocki
[not found] ` <1226343293.5498.5.camel@marge.simson.net>
[not found] ` <1226366822.2866.19.camel@ymzhang>
[not found] ` <1226394669.30025.72.camel@minggr.sh.intel.com>
[not found] ` <1226395210.7685.1324.camel@twins>
[not found] ` <1226395937.7685.1340.camel@twins>
[not found] ` <1226397807.30025.79.camel@minggr.sh.intel.com>
2008-11-11 10:52 ` [PATCH] sched: release buddies on yield Peter Zijlstra
2008-11-11 10:57 ` Ingo Molnar [this message]
2008-11-09 19:43 ` [Bug #11209] 2.6.27-rc1 process time accounting Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11340] LTP overnight run resulted in unusable box Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11264] Invalid op opcode in kernel/workqueue Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11215] INFO: possible recursive locking detected ps2_command Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11380] lockdep warning: cpu_add_remove_lock at:cpu_maps_update_begin+0x14/0x16 Rafael J. Wysocki
2008-11-10 7:30 ` Ingo Molnar
2008-11-10 13:22 ` Oleg Nesterov
2008-11-11 2:10 ` KOSAKI Motohiro
2008-11-11 12:01 ` Oleg Nesterov
2008-11-11 11:07 ` Ingo Molnar
2008-11-11 13:47 ` Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11407] suspend: unable to handle kernel paging request Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11404] BUG: in 2.6.23-rc3-git7 in do_cciss_intr Rafael J. Wysocki
2008-11-09 22:24 ` Randy Dunlap
2008-11-09 19:43 ` [Bug #11543] kernel panic: softlockup in tick_periodic() ??? Rafael J. Wysocki
2008-11-10 16:18 ` Cyrill Gorcunov
2008-11-09 19:43 ` [Bug #11505] oltp ~10% regression with 2.6.27-rc5 on stoakley machine Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11476] failure to associate after resume from suspend to ram Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11608] 2.6.27-rc6 BUG: unable to handle kernel paging request Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11569] Panic stop CPUs regression Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11664] acpi errors and random freeze on sony vaio sr Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11698] 2.6.27-rc7, freezes with > 1 s2ram cycle Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11795] ks959-sir dongle no longer works under 2.6.27 (REGRESSION) Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11805] mounting XFS produces a segfault Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11820] 2.6.27: 0 MHz CPU and wrong system time on AMD Geode system Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11836] Scheduler on C2D CPU and latest 2.6.27 kernel Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11830] disk statistics issue in 2.6.27 Rafael J. Wysocki
2008-11-09 23:49 ` Miquel van Smoorenburg
2008-11-10 0:05 ` Rafael J. Wysocki
2008-11-10 0:13 ` James Bottomley
2008-11-10 0:19 ` Miquel van Smoorenburg
2008-11-09 19:43 ` [Bug #11829] Kernel 2.6.26.5 -> 2.6.27.2 [USB REGRESSION] (USB -> D_STATE) Rafael J. Wysocki
2008-11-11 7:13 ` Greg KH
2008-11-11 13:53 ` Rafael J. Wysocki
2008-11-11 15:41 ` Mike Isely
2008-11-11 16:38 ` Rafael J. Wysocki
2008-11-11 16:42 ` Alan Stern
2008-11-09 19:43 ` [Bug #11843] usb hdd problems with 2.6.27.2 Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11865] WOL for E100 Doesn't Work Anymore Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11876] RCU hang on cpu re-hotplug with 2.6.27rc8 Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11983] iwlagn: wrong command queue 31, command id 0x0 Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11892] Battery information and status disappearing and wrong thermal status Rafael J. Wysocki
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