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

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Date:	Mon, 09 Jun 2008 21:10:17 +0200
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Alan Stern <stern@...land.harvard.edu>
CC:	Chris Clayton <chris2553@...glemail.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	SCSI development list <linux-scsi@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	James Bottomley <James.Bottomley@...senpartnership.com>,
	Hannes Reinecke <hare@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux1394-devel@...ts.sourceforge.net
Subject: Re: 2,6.26-rc4-git2 - long pause during boot

Alan Stern wrote:
> In fact the log shows that the 30-second delay occurs in the middle of
> ohci1394 (Firewire) initialization, not USB initialization:
> 
> Jun  8 05:26:35 upstairs kernel: ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[22]  MMIO=[fbfff000-fbfff7ff]  Max Packet=[2048]  IR/IT contexts=[4/8] 
> Jun  8 05:26:35 upstairs kernel: ohci_hcd 0000:02:0a.0: urb f71cb680 path 2 ep1in 5e160000 cc 5 --> status -62 
> Jun  8 05:26:35 upstairs kernel: hub 1-2:1.0: transfer --> -62 
> Jun  8 05:27:08 upstairs kernel: driver: '0000:02:0b.0': driver_bound: bound to device 'ohci1394' 
> Jun  8 05:27:08 upstairs kernel: bus: 'pci': really_probe: bound device 0000:02:0b.0 to driver ohci1394 

The log at http://lkml.org/lkml/2008/6/6/317 shows two pauses.  One in 
the middle of USB related messages with no FireWire stuff around 
(17:25:19 to 17:25:44).  The other with parport, ieee1394, USB messages 
around it (17:25:44 to 17:26:31).

 From there, the last 17:25:44 message is strange:  The device 
00110666000013cc which is the controller is reported as being removed. 
Chris, did you do something at this point?

Also, in http://lkml.org/lkml/2008/6/1/2 you reported a patch which 
changes the SCSI core's interaction with the driver core as first bad 
commit.  Did you check that going before this commit removes _all_ the 
pauses, even those around USB or FireWire messages?  Or did you only 
check whether disk drives appear quickly?
-- 
Stefan Richter
-=====-==--- -==- -=--=
http://arcgraph.de/sr/
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