Did you change any USB-related compile options between the two builds? Do you have usb device suspend enabled?
Can you tell (via top) where the 100% CPU usage is coming from (i.e. df, usb-storage thread, syswait, etc)? Matt On Mon, Jul 30, 2007 at 11:24:27PM +0100, Kostas Peletidis wrote: > Hi all, > > I would like to report a problem I have noticed since linux-2.6.22 that > most likely has to do with the USB subsystem. > > I have tried both kernel versions 2.6.22 and 2.6.22.1(configured with > make oldconfig) and in both cases whenever I plug in a fairly > large(500GB) MyBook usb2 hard disk df stops producing output and hangs > for about a minute when it reaches the usb disk. Interestingly enough > the disk's directory tree can be accessed immediately. It is only df and > Thunar, the xfce window manager, that slow down. During this temporary > hang the cpu load fluctuates and reaches 100% several times. > > When I plugged in a small(512MB) usb2 memory stick, instead of the disk, > df paused only momentarily before terminating normally. This suggests to > me that the size of the device affects the duration of the delay. > > The modules I use, apart from usb_storage, are ehci_hcd and uhci_hcd. > With linux-2.6.21.5 both usb devices work fine. > > I don't know how to proceed from here. Please let me know if you need > additional information or if I need to contact someone else. Thank you. > > > Regards, > Kostas Peletidis > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? Stop. > Now Search log events and configuration files using AJAX and a browser. > Download your FREE copy of Splunk now >> http://get.splunk.com/ > _______________________________________________ > linux-usb-devel@lists.sourceforge.net > To unsubscribe, use the last form field at: > https://lists.sourceforge.net/lists/listinfo/linux-usb-devel -- Matthew Dharm Home: [EMAIL PROTECTED] Maintainer, Linux USB Mass Storage Driver NYET! The evil stops here! -- Pitr User Friendly, 6/22/1998
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