From: Mark Lord <lkml@rtr.ca>
To: Len Brown <lenb@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Venki Pallipadi <venkatesh.pallipadi@intel.com>,
Arjan van de Ven <arjan@infradead.org>,
abelay@novell.com, Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
rjw@sisk.pl
Subject: Re: + restore-missing-sysfs-max_cstate-attr.patch added to -mm tree
Date: Mon, 07 Jan 2008 16:33:27 -0500 [thread overview]
Message-ID: <47829AA7.3020304@rtr.ca> (raw)
In-Reply-To: <200801071412.59964.lenb@kernel.org>
Len Brown wrote:
> 1. Why does VMware need max_cstate=1 to load quickly?
..
Eh? Nothing to do with "loading" anything,
but rather it's simple responsiveness to guest keyboard
input that we're experiencing trouble with.
The guest OS is probably "broken" in that regard,
but setting max_cstate=1 makes it usable here.
> 2. Why does the "max_csate=1" workaround help only
> on the dual-core boxes, while the single-core
> boxes still fail to load quickly?
..
Eh? Setting max_cstate=1 helps on both single/dual core
boxes/kernels here. The alternative (newer) latency thing
(that requires a custom kernel module to change on the fly)
is the thing that had no effect at all on our single-core box,
but did seem to help the dual-core more (not verified completely
on dual-core though).
Cheers
next prev parent reply other threads:[~2008-01-07 21:33 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200711302153.lAULrZ7n026255@imap1.linux-foundation.org>
[not found] ` <924EFEDD5F540B4284297C4DC59F3DEE2FAE6A@orsmsx423.amr.corp.intel.com>
2007-11-30 22:20 ` + restore-missing-sysfs-max_cstate-attr.patch added to -mm tree Andrew Morton
2007-11-30 22:37 ` Pallipadi, Venkatesh
2007-12-01 2:52 ` Mark Lord
2007-12-01 3:02 ` Arjan van de Ven
2007-12-01 3:14 ` Mark Lord
2007-12-01 3:18 ` Arjan van de Ven
2007-12-01 3:31 ` Mark Lord
2007-12-01 3:44 ` Mark Lord
2007-12-01 3:48 ` Mark Lord
2007-12-01 4:02 ` Mark Lord
2007-12-01 4:31 ` Mark Lord
2007-12-01 23:43 ` 20000+ wake-ups/second in 2.6.24. Bug? Mark Lord
2007-12-01 23:46 ` Arjan van de Ven
2007-12-01 23:55 ` Mark Lord
2007-12-02 0:13 ` Arjan van de Ven
2007-12-02 1:10 ` Andres Freund
2007-12-02 0:20 ` Rafael J. Wysocki
2008-02-04 17:29 ` Mark Lord
2008-02-04 17:50 ` Arjan van de Ven
2008-02-04 19:17 ` Mark Lord
2007-12-02 14:41 ` Adrian Bunk
2007-12-02 14:59 ` Mark Lord
2007-12-02 15:12 ` Adrian Bunk
2007-12-02 15:45 ` Mark Lord
2007-12-02 15:45 ` Mark Lord
2007-12-02 15:49 ` Mark Lord
2008-01-02 23:41 ` + restore-missing-sysfs-max_cstate-attr.patch added to -mm tree Mark Lord
2008-01-03 0:06 ` Pallipadi, Venkatesh
2008-01-03 0:51 ` Andrew Morton
2008-01-03 1:12 ` Pallipadi, Venkatesh
2008-01-03 4:25 ` Mark Lord
2008-01-03 4:18 ` Mark Lord
2008-01-04 2:16 ` Venki Pallipadi
2008-01-04 3:16 ` Mark Lord
2008-01-04 21:52 ` Mark Lord
2008-01-04 21:59 ` Pallipadi, Venkatesh
2008-01-05 16:27 ` Mark Lord
2008-01-06 21:34 ` Mark Lord
2008-01-07 7:18 ` Andrew Morton
2008-01-07 14:07 ` Arjan van de Ven
2008-01-07 15:07 ` Mark Lord
2008-01-07 14:18 ` Pallipadi, Venkatesh
2008-01-07 15:06 ` Mark Lord
2008-01-07 19:12 ` Len Brown
2008-01-07 21:33 ` Mark Lord [this message]
2008-01-07 22:43 ` Len Brown
2007-12-01 10:17 ` Andrew Morton
2007-12-01 16:30 ` Arjan van de Ven
2007-12-05 11:17 ` Pavel Machek
2007-12-07 21:38 ` Pallipadi, Venkatesh
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