On Mon, Nov 25, 2019 at 03:58:34PM +0100, Andrea Vai wrote: > Il giorno lun, 25/11/2019 alle 18.29 +0800, Ming Lei ha scritto: > > On Mon, Nov 25, 2019 at 11:11:00AM +0100, Andrea Vai wrote: > > > Il giorno lun, 25/11/2019 alle 11.54 +0800, Ming Lei ha scritto: > > > > On Sat, Nov 23, 2019 at 04:44:55PM +0100, Andrea Vai wrote: > > > > > Il giorno sab, 23/11/2019 alle 15.28 +0800, Ming Lei ha > > scritto: > > > > > > > > > > > > Please post the log of 'lsusb -v', and I will try to make a > > > > patch > > > > > > for > > > > > > addressing the issue. > > > > > > > > > > attached, > > > > > > > > Please apply the attached patch, and re-build & install & reboot > > > > kernel. > > > > > > > > This time, please don't switch io scheduler. > > > > > > # patch -p1 < usb.patch outputs: > > > > > > (Stripping trailing CRs from patch; use --binary to disable.) > > > patching file block/blk-mq.c > > > Hunk #1 succeeded at 1465 (offset 29 lines). > > > Hunk #2 succeeded at 3061 (offset 13 lines). > > > (Stripping trailing CRs from patch; use --binary to disable.) > > > patching file drivers/scsi/scsi_lib.c > > > Hunk #1 succeeded at 1902 (offset -37 lines). > > > (Stripping trailing CRs from patch; use --binary to disable.) > > > patching file drivers/usb/storage/scsiglue.c > > > Hunk #1 succeeded at 651 (offset -10 lines). > > > (Stripping trailing CRs from patch; use --binary to disable.) > > > patching file include/linux/blk-mq.h > > > Hunk #1 succeeded at 226 (offset -162 lines). > > > (Stripping trailing CRs from patch; use --binary to disable.) > > > patching file include/scsi/scsi_host.h > > > patch unexpectedly ends in middle of line > > > patch unexpectedly ends in middle of line > > > > > > Just to be sure I have to go on, is this correct? Sounds like an > > error > > > but I don't know if it is important. > > > > Looks there is small conflict, however it has been fixed by patch, > > so > > it is correct, please go on your test. > > Done, it still fails (2000 seconds or more to copy 1GB) :-( > > cat /sys/block/sdf/queue/scheduler outputs: > [mq-deadline] none > > What to try next? 1) cat /sys/kernel/debug/block/$DISK/hctx0/flags note: replace $DISK with disk name of your usb drive, such as, if it is /dev/sdb, pass $DISK as sdb. 2) echo 128 > /sys/block/$DISK/queue/nr_requests and run your copy 1GB test again. Thanks, Ming
