DervishD wrote:
I see a worse problem, I load the driver, mount the filesystems on the USB 160GB disk, and the disk just "goes away." I see the devices in /proc/scsi/scsi but I can't access the devices any more. Definitely time for a fallback to a more stable kernel!Hi all :)I don't know if this is a known issue, but usb-storage speed for 'Full speed' devices dropped from 2.6.11.12 (more than 800Kb/s) to 2.6.12 (less than 250Kb/s). The problem still exists in 2.6.13. The lack of speed seems to affect only the OHCI driver. My test was done over a PCI USB 2.0 card, ALi chipset, OHCI driver (well EHCI+OHCI) and using a full speed device capable of 12MBps. The average measured speeds are: - 2.4.31: about 450Kb/seg - 2.6.11-Debian: about 800Kb/seg - 2.6.11.12: about 820Kb/seg - 2.6.12.x: about 200Kb/seg - 2.6.13: about 200Kb/seg The .config is more or less the same in all kernels. I've took a look at the ChangeLog for 2.6.12 and there are lots of changes in the USB subsystem but I cannot identify which one could be the culprit.
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
