From: Prarit Bhargava <prarit@sgi.com>
To: Prarit Bhargava <prarit@sgi.com>
Cc: "Luck, Tony" <tony.luck@intel.com>, Ingo Molnar <mingo@elte.hu>,
Bjorn Helgaas <bjorn.helgaas@hp.com>,
Ingo Molnar <mingo@redhat.com>,
linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@osdl.org>, Linus Torvalds <torvalds@osdl.org>
Subject: Re: boot-time slowdown for measure_migration_cost
Date: Mon, 30 Jan 2006 15:52:57 -0500 [thread overview]
Message-ID: <43DE7CA9.5070608@sgi.com> (raw)
In-Reply-To: <43DE7A70.8030004@sgi.com>
Prarit Bhargava wrote:
>
> Tony,
>
>>
>>
>> Might it be wise to see whether the 2% variation that I saw can be
>> repeated on some other architecture? Can someone else try
>> this patch and post the before/after values for migration_cost from
>> dmesg?
>>
Whoops. Let's try that again:
Pristine (with build_sched_domains measurement):
[ 9.942253] Brought up 64 CPUs
[ 9.942904] Total of 64 processors activated (143654.91 BogoMIPS).
[ 9.943995] build_sched_domains: start
[ 32.108439] migration_cost=0,32232,39021
[ 37.894391] build_sched_domains: end
Patched (with build_sched_domains measurement):
[ 9.942267] Brought up 64 CPUs
[ 9.942930] Total of 64 processors activated (143654.91 BogoMIPS).
[ 9.944032] build_sched_domains: beginmigration_cost=0,31854,38739
[ 23.868304] build_sched_domains: end
P.
>
next prev parent reply other threads:[~2006-01-30 20:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-27 21:03 boot-time slowdown for measure_migration_cost Bjorn Helgaas
2006-01-30 17:21 ` Ingo Molnar
2006-01-30 18:53 ` Luck, Tony
2006-01-30 19:24 ` Ingo Molnar
2006-01-30 20:00 ` Luck, Tony
2006-01-30 20:43 ` Prarit Bhargava
2006-01-30 20:52 ` Prarit Bhargava [this message]
2006-01-30 20:43 ` John Hawkes
2006-01-30 19:26 ` Chen, Kenneth W
-- strict thread matches above, loose matches on Subject: below --
2006-01-27 21:48 Luck, Tony
2006-01-27 22:08 ` Prarit Bhargava
2006-02-01 0:50 Chuck Ebbert
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