From: Borislav Petkov <bp@alien8.de>
To: Alex Shi <alex.shi@intel.com>
Cc: Alex Shi <lkml.alex@gmail.com>,
rob@landley.net, mingo@redhat.com, peterz@infradead.org,
gregkh@linuxfoundation.org, andre.przywara@amd.com, rjw@sisk.pl,
paul.gortmaker@windriver.com, akpm@linux-foundation.org,
paulmck@linux.vnet.ibm.com, linux-kernel@vger.kernel.org,
pjt@google.com, vincent.guittot@linaro.org,
Preeti U Murthy <preeti@linux.vnet.ibm.com>,
Arjan van de Ven <arjan@linux.intel.com>
Subject: Re: [PATCH 0/18] sched: simplified fork, enable load average into LB and power awareness scheduling
Date: Tue, 11 Dec 2012 16:48:20 +0100 [thread overview]
Message-ID: <20121211154819.GC8873@liondog.tnic> (raw)
In-Reply-To: <50C722AC.3080806@intel.com>
On Tue, Dec 11, 2012 at 08:10:20PM +0800, Alex Shi wrote:
> Another testing of parallel compress with pigz on Linus' git tree.
> results show we get much better performance/power with powersaving and
> balance policy:
>
> testing command:
> #pigz -k -c -p$x -r linux* &> /dev/null
>
> On a NHM EP box
> powersaving balance performance
> x = 4 166.516 /88 68 170.515 /82 71 165.283 /103 58
> x = 8 173.654 /61 94 177.693 /60 93 172.31 /76 76
This looks funny: so "performance" is eating less watts than
"powersaving" and "balance" on NHM. Could it be that the average watts
measurements on NHM are not correct/precise..? On SNB they look as
expected, according to your scheme.
Also, shouldn't you have the shortest compress times with "performance"?
>
> On a 2 sockets SNB EP box.
> powersaving balance performance
> x = 4 190.995 /149 35 200.6 /129 38 208.561 /135 35
> x = 8 197.969 /108 46 208.885 /103 46 213.96 /108 43
> x = 16 205.163 /76 64 212.144 /91 51 229.287 /97 44
Ditto here, compress times with "performance" are not the shortest. Or
does "performance" mean something else? :-)
Thanks.
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--
next prev parent reply other threads:[~2012-12-11 15:48 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-10 8:22 Alex Shi
2012-12-10 8:22 ` [PATCH 01/18] sched: select_task_rq_fair clean up Alex Shi
2012-12-11 4:23 ` Preeti U Murthy
2012-12-11 5:28 ` Alex Shi
2012-12-11 6:30 ` Preeti U Murthy
2012-12-11 11:53 ` Alex Shi
2012-12-12 5:26 ` Preeti U Murthy
2012-12-21 4:28 ` Namhyung Kim
2012-12-23 12:17 ` Alex Shi
2012-12-10 8:22 ` [PATCH 02/18] sched: fix find_idlest_group mess logical Alex Shi
2012-12-11 5:08 ` Preeti U Murthy
2012-12-11 5:29 ` Alex Shi
2012-12-11 5:50 ` Preeti U Murthy
2012-12-11 11:55 ` Alex Shi
2012-12-10 8:22 ` [PATCH 03/18] sched: don't need go to smaller sched domain Alex Shi
2012-12-10 8:22 ` [PATCH 04/18] sched: remove domain iterations in fork/exec/wake Alex Shi
2012-12-10 8:22 ` [PATCH 05/18] sched: load tracking bug fix Alex Shi
2012-12-10 8:22 ` [PATCH 06/18] sched: set initial load avg of new forked task as its load weight Alex Shi
2012-12-21 4:33 ` Namhyung Kim
2012-12-23 12:00 ` Alex Shi
2012-12-10 8:22 ` [PATCH 07/18] sched: compute runnable load avg in cpu_load and cpu_avg_load_per_task Alex Shi
2012-12-12 3:57 ` Preeti U Murthy
2012-12-12 5:52 ` Alex Shi
2012-12-13 8:45 ` Alex Shi
2012-12-21 4:35 ` Namhyung Kim
2012-12-23 11:42 ` Alex Shi
2012-12-10 8:22 ` [PATCH 08/18] sched: consider runnable load average in move_tasks Alex Shi
2012-12-12 4:41 ` Preeti U Murthy
2012-12-12 6:26 ` Alex Shi
2012-12-21 4:43 ` Namhyung Kim
2012-12-23 12:29 ` Alex Shi
2012-12-10 8:22 ` [PATCH 09/18] Revert "sched: Introduce temporary FAIR_GROUP_SCHED dependency for load-tracking" Alex Shi
2012-12-10 8:22 ` [PATCH 10/18] sched: add sched_policy in kernel Alex Shi
2012-12-10 8:22 ` [PATCH 11/18] sched: add sched_policy and it's sysfs interface Alex Shi
2012-12-10 8:22 ` [PATCH 12/18] sched: log the cpu utilization at rq Alex Shi
2012-12-10 8:22 ` [PATCH 13/18] sched: add power aware scheduling in fork/exec/wake Alex Shi
2012-12-10 8:22 ` [PATCH 14/18] sched: add power/performance balance allowed flag Alex Shi
2012-12-10 8:22 ` [PATCH 15/18] sched: don't care if the local group has capacity Alex Shi
2012-12-10 8:22 ` [PATCH 16/18] sched: pull all tasks from source group Alex Shi
2012-12-10 8:22 ` [PATCH 17/18] sched: power aware load balance, Alex Shi
2012-12-10 8:22 ` [PATCH 18/18] sched: lazy powersaving balance Alex Shi
2012-12-11 0:51 ` [PATCH 0/18] sched: simplified fork, enable load average into LB and power awareness scheduling Alex Shi
2012-12-11 12:10 ` Alex Shi
2012-12-11 15:48 ` Borislav Petkov [this message]
2012-12-11 16:03 ` Arjan van de Ven
2012-12-11 16:13 ` Borislav Petkov
2012-12-11 16:40 ` Arjan van de Ven
2012-12-12 9:52 ` Amit Kucheria
2012-12-12 13:55 ` Alex Shi
2012-12-12 14:21 ` Vincent Guittot
2012-12-13 2:51 ` Alex Shi
2012-12-12 14:41 ` Borislav Petkov
2012-12-13 3:07 ` Alex Shi
2012-12-13 11:35 ` Borislav Petkov
2012-12-14 1:56 ` Alex Shi
2012-12-12 1:14 ` Alex Shi
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