From: Dipankar Sarma <dipankar@in.ibm.com>
To: Lee Revell <rlrevell@joe-job.com>
Cc: Ingo Molnar <mingo@elte.hu>,
"Paul E. McKenney" <paulmck@us.ibm.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@osdl.org>
Subject: Re: RCU latency regression in 2.6.16-rc1
Date: Tue, 24 Jan 2006 21:58:46 +0530 [thread overview]
Message-ID: <20060124162846.GA7139@in.ibm.com> (raw)
In-Reply-To: <1138095856.2771.103.camel@mindpipe>
On Tue, Jan 24, 2006 at 04:44:15AM -0500, Lee Revell wrote:
> On Tue, 2006-01-24 at 10:23 +0100, Ingo Molnar wrote:
> > * Paul E. McKenney <paulmck@us.ibm.com> wrote:
> >
> > > The other patch to try would be Dipankar Sarma's patch at:
> > >
> > > http://marc.theaimsgroup.com/?l=linux-kernel&m=113657112726596&w=2
> > >
> > > This patch was primarily designed to reduce memory overhead, but given
> > > that it tends to reduce batch size, it should also reduce latency.
> >
> > if this solves Lee's problem, i think we should apply this as a fix, and
> > get it into v2.6.16. The patch looks straightforward and correct to me.
> >
>
> Does not compile:
>
> CC kernel/rcupdate.o
> kernel/rcupdate.c:76: warning: 'struct rcu_state' declared inside parameter list
My original patch was against a much older kernel.
I will send out a more uptodate patch as soon as I am done with some
testing.
Thanks
Dipankar
next prev parent reply other threads:[~2006-01-24 16:29 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-24 7:52 RCU latency regression in 2.6.16-rc1 Lee Revell
2006-01-24 7:56 ` Ingo Molnar
2006-01-24 7:58 ` Lee Revell
2006-01-24 8:01 ` Ingo Molnar
2006-01-24 8:03 ` Lee Revell
2006-01-24 8:11 ` Ingo Molnar
2006-01-24 8:07 ` Lee Revell
2006-01-24 8:13 ` Ingo Molnar
2006-01-24 8:15 ` Lee Revell
2006-01-24 9:17 ` Paul E. McKenney
2006-01-24 9:23 ` Ingo Molnar
2006-01-24 9:44 ` Lee Revell
2006-01-24 16:28 ` Dipankar Sarma [this message]
2006-01-24 21:38 ` Dipankar Sarma
2006-01-25 21:28 ` Lee Revell
2006-01-25 22:56 ` Ingo Molnar
2006-01-25 23:13 ` Lee Revell
2006-01-26 19:18 ` Paul E. McKenney
2006-01-27 18:55 ` Lee Revell
2006-01-28 17:03 ` Dipankar Sarma
2006-01-28 18:00 ` Lee Revell
2006-01-28 18:51 ` Lee Revell
2006-01-28 19:34 ` Dipankar Sarma
2006-01-28 19:46 ` Lee Revell
2006-01-28 19:52 ` Eric Dumazet
2006-01-29 7:38 ` Lee Revell
2006-01-29 7:51 ` Ingo Molnar
2006-01-29 8:21 ` Lee Revell
2006-01-30 4:36 ` Paul E. McKenney
2006-01-30 4:55 ` Eric Dumazet
2006-01-30 5:11 ` Paul E. McKenney
2006-01-30 5:52 ` David S. Miller
2006-01-30 10:00 ` Paul E. McKenney
2006-02-12 0:45 ` Lee Revell
2006-01-24 16:57 ` Dipankar Sarma
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