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Date: Tue, 17 Dec 2013 14:32:04 +0100
From: Peter Zijlstra <peterz@infradead.org>
To: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>, lenb@kernel.org,
        rjw@rjwysocki.net, rui.zhang@intel.com, jacob.jun.pan@linux.intel.com,
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        Thomas Gleixner <tglx@linutronix.de>,
        John Stultz <john.stultz@linaro.org>,
        Andy Lutomirski <luto@amacapital.net>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 00/15] cleanups and optimizations
Message-ID: <20131217133204.GK21999@twins.programming.kicks-ass.net>
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On Mon, Dec 16, 2013 at 07:48:32PM +0200, Eliezer Tamir wrote:
> On 13/12/2013 15:56, Peter Zijlstra wrote:
> > On Fri, Dec 13, 2013 at 12:49:01PM +0200, Eliezer Tamir wrote:
> >> On 12/12/2013 16:08, Peter Zijlstra wrote:
> >>> This series contains the preempt_enable_no_resched() cleanups that include
> >>> spin_lock_bh() optimizations and local_clock() optimizations.
> >>
> >> I'm trying to test this on tip/master.
> >> Patch 3 fails to apply on kenrel/softirq.c
> > 
> > https://git.kernel.org/cgit/linux/kernel/git/peterz/queue.git/log/?h=preempt_clock
> > 
> > Applied just fine here.. stuffed it in a git tree.
> 
> Thanks,
> That worked.
> 
> My test is, netperf TCP_RR 1 byte, with busy polling enabled, 30s run.
> 
> I see 92.0K RR with your patches, 91.8K RR with out them.
> This is barely above the noise level, but I'm pretty sure it's real.
> In any case I don't see any regression.

Awesomeness.. you'll work on subtracting the spin time from the sleep
time?