Flash drive runs slow with rsync

Toshiba / Satellite m70
April 1, 2009 at 15:14:50
Specs: Windows XP, 1.8Ghz/2GB
I just bought a new Patriot PEF32GUSB 32GB flash drive. When I copy files to it with Windows Explorer, it writes at the expected 8.75MB/sec. But when I copy files to it with cygwin/rsync, it writes at just 0.43MB/sec. I tried reformatting the drive as NTFS with 4KB cluster size but that did not help. (Was FAT32/16KB before.)

When I rsync to a USB Hard Drive, it writes at 5.7MB/sec. I'm rsyncing from drive to drive on the same computer, this is not over a network.

If anyone has any suggestions I'd appreciate it.


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April 1, 2009 at 16:41:16
Use performace monitor to check overhead. My guess is that somehow all of that running is causing some bottleneck either by a slow point or some cache thrashing.

"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10

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April 10, 2009 at 16:17:10
Thanks for the suggestion. The performance monitor led me to check my Antivirus software, which was causing the problem. I have configured the antivirus software to disable itself when rsync is running.

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