From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: linux-kernel@vger.kernel.org, Jason Low <jason.low2@hp.com>,
Waiman Long <waiman.long@hp.com>,
mingo@kernel.org, torvalds@linux-foundation.org,
tglx@linutronix.de, riel@redhat.com, akpm@linux-foundation.org,
davidlohr@hp.com, hpa@zytor.com, andi@firstfloor.org,
aswin@hp.com, scott.norton@hp.com, chegu_vinod@hp.com
Subject: Re: [PATCH 0/8] locking/core patches
Date: Wed, 26 Feb 2014 13:40:02 -0800 [thread overview]
Message-ID: <20140226214002.GA5660@linux.vnet.ibm.com> (raw)
In-Reply-To: <20140210195820.834693028@infradead.org>
On Mon, Feb 10, 2014 at 08:58:20PM +0100, Peter Zijlstra wrote:
> Hi all,
>
> I would propose merging the following patches...
>
> The first set is mostly from Jason and tweaks the mutex adaptive
> spinning, AIM7 throughput numbers:
>
> PRE: 100 2000.04 21564.90 2721.29 311.99 3.12 0.01 0.00 99
> POST: 100 2000.04 42603.85 5142.80 311.99 3.12 0.00 0.00 99
>
> The second set is the qrwlock, although mostly rewritten by me. I didn't do
> much with it other than boot and build a kernel. But I like them because
> of the much better worst case preformance.
This series passes a short locktorture test when based on top of current
tip/core/locking.
But don't read too much into this... This was in an 8-CPU KVM guest on
x86, and locktorture is still a bit on the lame side. But you have to
start somewhere!
Thanx, Paul
prev parent reply other threads:[~2014-02-26 21:40 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-10 19:58 [PATCH 0/8] locking/core patches Peter Zijlstra
2014-02-10 19:58 ` [PATCH 1/8] locking: Move mcs_spinlock.h into kernel/locking/ Peter Zijlstra
2014-02-10 19:58 ` [PATCH 2/8] mutex: In mutex_can_spin_on_owner(), return false if task need_resched() Peter Zijlstra
2014-02-10 21:02 ` Peter Zijlstra
2014-02-10 19:58 ` [PATCH 3/8] mutex: Modify the way optimistic spinners are queued Peter Zijlstra
2014-02-11 1:33 ` Jason Low
2014-02-11 7:20 ` Peter Zijlstra
2014-02-10 19:58 ` [PATCH 4/8] mutex: Unlock the mutex without the wait_lock Peter Zijlstra
2014-02-10 19:58 ` [PATCH 5/8] locking, mutex: Cancelable MCS lock for adaptive spinning Peter Zijlstra
2014-02-10 21:15 ` Jason Low
2014-02-10 21:32 ` Peter Zijlstra
2014-02-10 22:04 ` Jason Low
2014-02-11 9:18 ` Peter Zijlstra
2014-02-11 9:38 ` Ingo Molnar
2014-02-25 19:56 ` Jason Low
2014-02-26 9:22 ` Peter Zijlstra
2014-02-26 17:45 ` Jason Low
2014-02-10 19:58 ` [PATCH 6/8] mutex: Extra reschedule point Peter Zijlstra
2014-02-10 22:59 ` Andrew Morton
2014-02-10 19:58 ` [PATCH 7/8] locking: Introduce qrwlock Peter Zijlstra
2014-02-11 18:17 ` Waiman Long
2014-02-11 20:12 ` Waiman Long
2014-02-13 16:35 ` Peter Zijlstra
2014-02-13 17:26 ` Peter Zijlstra
2014-02-14 19:01 ` Waiman Long
2014-02-14 18:48 ` Waiman Long
2014-02-10 19:58 ` [PATCH 8/8] x86,locking: Enable qrwlock Peter Zijlstra
2014-02-10 23:02 ` [PATCH 0/8] locking/core patches Andrew Morton
2014-02-11 7:17 ` Peter Zijlstra
2014-02-11 8:03 ` Andrew Morton
2014-02-11 8:45 ` Ingo Molnar
2014-02-11 8:57 ` Peter Zijlstra
2014-02-11 21:37 ` Waiman Long
2014-02-25 19:26 ` Jason Low
2014-02-26 21:40 ` Paul E. McKenney [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20140226214002.GA5660@linux.vnet.ibm.com \
--to=paulmck@linux.vnet.ibm.com \
--cc=akpm@linux-foundation.org \
--cc=andi@firstfloor.org \
--cc=aswin@hp.com \
--cc=chegu_vinod@hp.com \
--cc=davidlohr@hp.com \
--cc=hpa@zytor.com \
--cc=jason.low2@hp.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=peterz@infradead.org \
--cc=riel@redhat.com \
--cc=scott.norton@hp.com \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=waiman.long@hp.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox