linux-kernel - Re: 2,6.26-rc4-git2 - long pause during boot

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Date:	Thu, 5 Jun 2008 22:17:09 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	chris2553@...glemail.com
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-scsi@...r.kernel.org,
	Hannes Reinecke <hare@...e.de>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: 2,6.26-rc4-git2 - long pause during boot

On Sun, 1 Jun 2008 04:15:05 +0000 Chris Clayton <chris2553@...glemail.com> wrote:

> Hi,
> 
> I've just started testing 2.6.26 on my desktop machine and have found that I get 
> a long pause (20 seconds or so) as the system boots. By pause I mean that the 
> boot messages that normally scroll by stop doing so for, as I say, about 20 
> seconds.
> 
> I've done a bisect and arrived at:
> 
> b0ed43360fdca227048d88a08290365cb681c1a8 is first bad commit
> commit b0ed43360fdca227048d88a08290365cb681c1a8
> Author: Hannes Reinecke <hare@...e.de>
> Date:   Tue Mar 18 14:32:28 2008 +0100
> 
>     [SCSI] add scsi_host and scsi_target to scsi_bus
> 
>     This patch implements scsi_host and scsi_target device types
>     and adds both to the scsi_bus.
> 
>     Signed-off-by: Hannes Reinecke <hare@...e.de>
>     Signed-off-by: Kay Sievers <kay.sievers@...y.org>
>     Signed-off-by: James Bottomley <James.Bottomley@...senPartnership.com>
> 
> :040000 040000 4e3140909966b4c9aa987d34ee4078d283fe0351 
> 46e4fd28cc537ba700eb4f5652abf043fed4d76d M      drivers
> 
> The config file for that kernel is attached as are the kernel log for booting 
> that kernel and the bisect log.
> 
> I've also noticed that it takes much longer for icons to appear on my desktop 
> when I plug a usb storage device in. (The icons are shown/hidden by a simple 
> sctript that is run via udev when the device is attached/detached.)

Do you believe that this is the same period?  20 seconds?

> Let me know of any way I can help solve this.
> 
> Please cc me to any reply as I'm not subscribed.

cc's added.

Rafael, we might need to track this as a post-2.6.26 regression.

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