From: Peter Zijlstra <peterz@infradead.org>
To: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>, Ingo Molnar <mingo@kernel.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Preeti U Murthy <preeti@linux.vnet.ibm.com>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [RFC PATCH 00/10] Improve numa scheduling by consolidating tasks
Date: Tue, 30 Jul 2013 10:20:01 +0200 [thread overview]
Message-ID: <20130730082001.GG3008@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20130730081755.GF3008@twins.programming.kicks-ass.net>
On Tue, Jul 30, 2013 at 10:17:55AM +0200, Peter Zijlstra wrote:
> On Tue, Jul 30, 2013 at 01:18:15PM +0530, Srikar Dronamraju wrote:
> > Here is an approach that looks to consolidate workloads across nodes.
> > This results in much improved performance. Again I would assume this work
> > is complementary to Mel's work with numa faulting.
>
> I highly dislike the use of task weights here. It seems completely
> unrelated to the problem at hand.
I also don't particularly like the fact that it's purely process based.
The faults information we have gives much richer task relations.
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WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>, Ingo Molnar <mingo@kernel.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Preeti U Murthy <preeti@linux.vnet.ibm.com>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [RFC PATCH 00/10] Improve numa scheduling by consolidating tasks
Date: Tue, 30 Jul 2013 10:20:01 +0200 [thread overview]
Message-ID: <20130730082001.GG3008@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20130730081755.GF3008@twins.programming.kicks-ass.net>
On Tue, Jul 30, 2013 at 10:17:55AM +0200, Peter Zijlstra wrote:
> On Tue, Jul 30, 2013 at 01:18:15PM +0530, Srikar Dronamraju wrote:
> > Here is an approach that looks to consolidate workloads across nodes.
> > This results in much improved performance. Again I would assume this work
> > is complementary to Mel's work with numa faulting.
>
> I highly dislike the use of task weights here. It seems completely
> unrelated to the problem at hand.
I also don't particularly like the fact that it's purely process based.
The faults information we have gives much richer task relations.
next prev parent reply other threads:[~2013-07-30 8:20 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-30 7:48 [RFC PATCH 00/10] Improve numa scheduling by consolidating tasks Srikar Dronamraju
2013-07-30 7:48 ` Srikar Dronamraju
2013-07-30 7:48 ` [RFC PATCH 01/10] sched: Introduce per node numa weights Srikar Dronamraju
2013-07-30 7:48 ` Srikar Dronamraju
2013-07-30 7:48 ` [RFC PATCH 02/10] sched: Use numa weights while migrating tasks Srikar Dronamraju
2013-07-30 7:48 ` Srikar Dronamraju
2013-07-30 7:48 ` [RFC PATCH 03/10] sched: Select a better task to pull across node using iterations Srikar Dronamraju
2013-07-30 7:48 ` Srikar Dronamraju
2013-07-30 7:48 ` [RFC PATCH 04/10] sched: Move active_load_balance_cpu_stop to a new helper function Srikar Dronamraju
2013-07-30 7:48 ` Srikar Dronamraju
2013-07-30 7:48 ` [RFC PATCH 05/10] sched: Extend idle balancing to look for consolidation of tasks Srikar Dronamraju
2013-07-30 7:48 ` Srikar Dronamraju
2013-07-30 7:48 ` [RFC PATCH 06/10] sched: Limit migrations from a node Srikar Dronamraju
2013-07-30 7:48 ` Srikar Dronamraju
2013-07-30 7:48 ` [RFC PATCH 07/10] sched: Pass hint to active balancer about the task to be chosen Srikar Dronamraju
2013-07-30 7:48 ` Srikar Dronamraju
2013-07-30 7:48 ` [RFC PATCH 08/10] sched: Prevent a task from migrating immediately after an active balance Srikar Dronamraju
2013-07-30 7:48 ` Srikar Dronamraju
2013-07-30 7:48 ` [RFC PATCH 09/10] sched: Choose a runqueue that has lesser local affinity tasks Srikar Dronamraju
2013-07-30 7:48 ` Srikar Dronamraju
2013-07-30 7:48 ` [RFC PATCH 10/10] x86, mm: Prevent gcc to re-read the pagetables Srikar Dronamraju
2013-07-30 7:48 ` Srikar Dronamraju
2013-07-30 8:17 ` [RFC PATCH 00/10] Improve numa scheduling by consolidating tasks Peter Zijlstra
2013-07-30 8:17 ` Peter Zijlstra
2013-07-30 8:20 ` Peter Zijlstra [this message]
2013-07-30 8:20 ` Peter Zijlstra
2013-07-30 9:03 ` Srikar Dronamraju
2013-07-30 9:03 ` Srikar Dronamraju
2013-07-30 9:10 ` Peter Zijlstra
2013-07-30 9:10 ` Peter Zijlstra
2013-07-30 9:26 ` Peter Zijlstra
2013-07-30 9:26 ` Peter Zijlstra
2013-07-30 9:46 ` Srikar Dronamraju
2013-07-30 9:46 ` Srikar Dronamraju
2013-07-31 15:09 ` Peter Zijlstra
2013-07-31 15:09 ` Peter Zijlstra
2013-07-31 18:06 ` Srikar Dronamraju
2013-07-31 18:06 ` Srikar Dronamraju
2013-07-30 9:15 ` Srikar Dronamraju
2013-07-30 9:15 ` Srikar Dronamraju
2013-07-30 9:33 ` Peter Zijlstra
2013-07-30 9:33 ` Peter Zijlstra
2013-07-31 17:35 ` Srikar Dronamraju
2013-07-31 17:35 ` Srikar Dronamraju
2013-07-31 13:33 ` Andrew Theurer
2013-07-31 13:33 ` Andrew Theurer
2013-07-31 15:43 ` Srikar Dronamraju
2013-07-31 15:43 ` Srikar Dronamraju
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