From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andreas Kinzler <ml-xen-devel@hfp.de>
Subject: Re: Poor performance with Linux 3.x as dom0
Date: Wed, 02 May 2012 19:01:41 +0200
Message-ID: <4FA16875.5020801@hfp.de>
References: <4FA1328B.6070602@hfp.de> <4FA13708.4050202@cantab.net>
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To: David Vrabel <dvrabel@cantab.net>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>, xen-devel@lists.xensource.com, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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On 02.05.2012 15:30, David Vrabel wrote:
> Can you apply 7eb7ce4d2e8991aff4ecb71a81949a907ca755ac "xen: correctly
> check for pending events when restoring irq flags"[1] and see how much
> it helps?

There is some minor improvement - but it is still far away from xenified 
2.6.34.10.

time emerge apache:

		3.2.12-dom0	3.3.4-dom0 (w. patch)	2.6.34.10-dom0
	real    1m0.560s	0m59.971s (0m58.029s)	0m47.689s
	user    0m40.939s	0m40.619s (0m40.291s)	0m41.355s
	sys     0m18.865s	0m18.305s (0m16.837s)	0m11.441s

time make -j4 (3.2.12 linux compile):

		3.2.12-dom0	3.3.4-dom0 (w. patch)	2.6.34.10-dom0
	real    5m8.793s	5m4.888s  (5m1.408s)	4m20.576s
	user    8m1.746s	7m59.726s (7m57.534s)	7m10.375s
	sys     1m39.010s	1m32.994s (1m29.518s)	0m56.304s

Regards Andreas