Le 01.09.2005 13:36, DervishD a écrit : > 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
Are you mounting this storage with vfat and 'sync' option ? IIRC, sync support for vfat was added around 2.6.12, making write way slower since it's now really synchron. Brice - 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/
