Re: Slow rsync speed between usb drives

--- In nslu2-general%40yahoogroups.com">nslu2-generalyahoogroups.com, "Mike (mwester)&quot; <mwester...>
wrote:
&gt; What firmware did you install?

debian-4.0r3: di-nslu2.bin

>; How are the drives mounted (can you provide the output from the mount
> command)?

At the time I had five drives mounted. However, since I know have
those drives plugged into my laptop, I am currently testing and
producing the same problem with a single flash drive.

LKG6BE74A:~# mount
/dev/sda1 on / type ext3 (rw,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
procbususb on /proc/bus/usb type usbfs (rw)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
nfsd on /proc/fs/nfsd type nfsd (rw)
rpc_pipefs on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

> What exactly is the rsync command you issued?

rsync --progress -aHSA . /mnt/share/Series/.

Although, I produce the same slow speeds with dd and hdparm:

LKG6BE74A:~# hdparm -t -T /dev/sda

/dev/sda:
Timing cached reads: 96 MB in 2.02 seconds = 47.46 MB/sec
Timing buffered disk reads: 10 MB in 3.12 seconds = 3.21 MB/sec

I gave the sample dd commands in a separate message.

Basically, I can read data at about 3 MB/s and I can write data at 2
MB/s. Regardless of which disks I use.

Bill

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