OEM Priority Project

  1. Series maverick
  2. Bug #709245
  3. Comment #11

Comment 11 for bug 709245

Revision history for this message
Jani Monoses (jani) wrote : Re: panda: USB disk IO slow

I see the same behaviour without ethernet plugged in, and pinging the panda via wlan0. Is that chip too on the same USB controller?

5x speed increase on write when pinging with -i.0001

jani@panda:~$ time dd if=/dev/zero of=alma bs=4M count=1024
1024+0 records in
1024+0 records out
4294967296 bytes (4.3 GB) copied, 1451.47 s, 3.0 MB/s

real 25m7.935s
user 0m0.023s
sys 1m24.266s

jani@panda:~$ time dd if=/dev/zero of=alma2 bs=4M count=1024
1024+0 records in
1024+0 records out
4294967296 bytes (4.3 GB) copied, 267.908 s, 16.0 MB/s

real 4m30.361s
user 0m0.016s
sys 1m15.844s