Hi list and Patrick, the default max_sectors is 240. I change this to 1024 like you said but the problem continue.
If i try the speed: time dd if=/dev/sdc1 of=/dev/null bs=1M count=5 i get that speed: 972 MB/s but if i run rsync, the upload transfer rate is very slow ( begins at 4MB/s and goes below until 0.7KB/s) []'s Luigi Castro Cardeles 2010/3/6 Patrick O'Callaghan <pocallag...@gmail.com> > On Sat, 2010-03-06 at 11:05 -0300, Luigi Castro Cardeles wrote: > > Hi list, > > > > > > I use fedora 12 on a dell inspiron 1545 laptop. > > (2.6.31.12-174.2.22.fc12.x86_64). > > i have a external usb hd and i can't make it connect like a usb 2.0 > > device. > > this device is ntfs format > > > > > > I check if the device is using ehci (dmesg after i plug the device) > > [r...@localhost ~]# dmesg | grep USB > > usb 2-2: new high speed USB device using ehci_hcd and address 2 > > > > > > I check if this device is connected on a usb 2.0 > > [r...@localhost ~]# lsusb > > Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > > Bus 002 Device 015: ID 0471:2021 Philips > > Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > > > > > > I mount the device with this options: > > /dev/sdc1 on /media/hd_backup type fuseblk > > (rw,nosuid,nodev,allow_other,blksize=4096) > > > > > > but when i use cp, mv or rsync, the max speed i get is max 6MB/s (a > > lot 800kB/s). > > If i use this device on Windows (tested with Vista and Seven), i get > > much high transfer rate. > > I read about sync and async options, but if i put sync or async on > > fstab, it does not alter the transfer rate. > > > > > > Is this the normal upload transfer rate? I am doing something wrong? > > Try this as an experiment: > > echo 1024 > /sys/block/sdc/device/max_sectors > > and repeat your I/O measurement. > > poc > > > -- > users mailing list > users@lists.fedoraproject.org > To unsubscribe or change subscription options: > https://admin.fedoraproject.org/mailman/listinfo/users > Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines >
-- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
