On 5/26/05, Hans-Werner Hilse <[EMAIL PROTECTED]> wrote: > > I've got an external USB 2.0 HD with two fat32 partitions (I have to > > use fat32 to make them work with windows). What troubles with me with > > drive is that in windows I get the expected transfer speed, but in > > linux it just won't get faster than 1Mb/s. > > Do you use the usb-storage driver or the usb block device drive (which > mentions things like "slow" and "cpu-hungry" and "unstable" in the > kernel config option's help page)? Could you C&P the relevant parts > from the kernel logs when the drivers are loaded (USB host adapter and > device)?
Here's the kernel log message: May 27 01:51:06 rpc-jd224 usb 4-4: new high speed USB device using ehci_hcd and address 6 May 27 01:51:06 rpc-jd224 uba: device 6 capacity nsec 312581808 bsize 512 May 27 01:51:06 rpc-jd224 uba: device 6 capacity nsec 312581808 bsize 512 May 27 01:51:06 rpc-jd224 uba: uba1 uba2 The drive's entry in fstab (i'm using udev to get /dev/externalhd2): /dev/externalhd2 /mnt/externalhd vfat noauto,noatime,rw,users 0 0 That's the relevant usb section of /usr/src/linux/.config: CONFIG_USB=y CONFIG_USB_ARCH_HAS_HCD=y CONFIG_USB_ARCH_HAS_OHCI=y CONFIG_USB_EHCI_HCD=m CONFIG_USB_EHCI_ROOT_HUB_TT=y CONFIG_USB_OHCI_HCD=m CONFIG_USB_UHCI_HCD=m CONFIG_USB_STORAGE=m CONFIG_USB_STORAGE_RW_DETECT=y I don't exactly know which block device drivers you're talking about. Are you sure that they're available in 2.6.10? The modules that are currently loaded (after using the external drive): ohci_hcd 19656 0 rtc 10440 0 nls_iso8859_1 3776 1 nls_cp437 5376 1 vfat 11520 1 fat 36576 1 vfat ath_pci 52576 0 ath_rate_onoe 6856 1 ath_pci wlan 107484 3 ath_pci,ath_rate_onoe ath_hal 131280 2 ath_pci ub 15132 2 yenta_socket 19200 0 pcmcia_core 45388 1 yenta_socket ehci_hcd 28164 0 uhci_hcd 30672 0 I still don't see much of a reason why the drive should be so slow, and neither why the kernel should use 100% cpu. Any help is appreciated, Jan -- gentoo-user@gentoo.org mailing list
