From: Peter Zijlstra <peterz@infradead•org>
To: Pan Xinhui <xinhui.pan@linux•vnet.ibm.com>
Cc: linux-kernel@vger•kernel.org, linuxppc-dev@lists•ozlabs.org,
virtualization@lists•linux-foundation.org,
benh@kernel•crashing.org, paulus@samba•org, mpe@ellerman•id.au,
mingo@redhat•com, paulmck@linux•vnet.ibm.com, jeremy@goop•org,
chrisw@sous-sol•org, akataria@vmware•com, rusty@rustcorp•com.au
Subject: Re: [PATCH v3 0/6] powerpc use pv-qpsinlock as the default spinlock implemention
Date: Thu, 26 May 2016 18:50:47 +0200 [thread overview]
Message-ID: <20160526165047.GM3206@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <1464164289-6124-1-git-send-email-xinhui.pan@linux.vnet.ibm.com>
On Wed, May 25, 2016 at 04:18:03PM +0800, Pan Xinhui wrote:
> _____test________________spinlcok______________pv-qspinlcok_____
> |futex hash | 556370 ops | 629634 ops |
> |futex lock-pi | 362 ops | 367 ops |
>
> scheduler test:
> Test how many loops of schedule() can finish within 10 seconds on all cpus.
>
> _____test________________spinlcok______________pv-qspinlcok_____
> |schedule() loops| 322811921 | 311449290 |
>
> kernel compiling test:
> build a linux kernel image to see how long it took
>
> _____test________________spinlcok______________pv-qspinlcok_____
> | compiling takes| 22m | 22m |
s/spinlcok/spinlock/
Is 'spinlcok' the current test-and-set lock?
And what about regular qspinlock, in case of !SHARED_PROCESSOR?
next prev parent reply other threads:[~2016-05-26 16:51 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-25 8:18 [PATCH v3 0/6] powerpc use pv-qpsinlock as the default spinlock implemention Pan Xinhui
2016-05-25 8:18 ` [PATCH v3 1/6] qspinlock: powerpc support qspinlock Pan Xinhui
2016-05-25 8:18 ` [PATCH v3 2/6] powerpc: pseries/Kconfig: Add qspinlock build config Pan Xinhui
2016-05-25 8:18 ` [PATCH v3 3/6] powerpc: lib/locks.c: Add cpu yield/wake helper function Pan Xinhui
2016-05-25 8:18 ` [PATCH v3 4/6] pv-qspinlock: powerpc support pv-qspinlock Pan Xinhui
2016-05-25 8:18 ` [PATCH v3 5/6] pv-qspinlock: use cmpxchg_release in __pv_queued_spin_unlock Pan Xinhui
2016-05-26 16:47 ` Peter Zijlstra
2016-05-26 16:57 ` Peter Zijlstra
2016-05-27 10:34 ` xinhui
2016-05-25 8:18 ` [PATCH v3 6/6] powerpc: pseries: Add pv-qspinlock build config/make Pan Xinhui
2016-05-26 16:50 ` Peter Zijlstra [this message]
2016-05-27 10:52 ` [PATCH v3 0/6] powerpc use pv-qpsinlock as the default spinlock implemention xinhui
2016-05-26 16:54 ` Peter Zijlstra
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