linux-kernel - Re: Boot time regression in 2.6.38 after initial wq merge

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Date:	Tue, 22 Feb 2011 16:04:02 +0100
From:	"pantherchen@...sanet.de" <pantherchen@...sanet.de>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	Tejun Heo <tj@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Boot time regression in 2.6.38 after initial wq merge

On 02/22/2011 10:15 AM, Dmitry Torokhov wrote:
> I'd like to see rc6 tried.

Unfortunately it shows the same behavior [0]. (To speed things up, I 
used a stripped down kernel config [1], while the first two posted boot 
charts used Ubuntu's stock kernels.)

I was surprised that the kernel directly built from the wq branch and 
the last "good" kernel from Linus' tree with the 33 patches applied 
don't show the increased boot time - shouldn't they all be the same?

About the system: Lenovo ThinkPad T510 with an Core i5-560m, 6 GB RAM, a 
SSD, and hybrid graphics (can boot from either the Intel HD or the 
Nvidia NVS 3100M - regression shows up with both).

The system is running an up-to-date Ubuntu dev release (Natty) with Xorg 
7.6(~3ubuntu7), Xserver 1.9.99.901+git20110131.be3be758(-0ubuntu6), and 
Plymouth 0.8.2(-2ubuntu17) FWIW.

Thanks,

Hernando Torque

[0]: http://img.xrmb2.net/images/576186.png
[1]: http://paste.ubuntu.com/570595/
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