On Sun, Jul 13, 2003 at 01:46:29PM -0700, Matthew Dharm wrote: > > Another data point: I've been mounting the device with the sync option. > > Another user suggests that mounting with sync obviates the need to > > control bandwidth with rsync. I believe this is why it didn't matter > > where I set bwlimit but it did for others (who had the device mounted > > async). > Can you try without the sync option so we know for certain?
Behavior is not 100% reproducible; sometimes I do get crashes with rsync even if the device is mounted -o sync, but usually not. What is consistent, however, is that when the device is mounted sync, the speed with rsync never gets up above 330kB/s, no matter what bwlimit is set to. (rsync does respect lower bwlimit, of course). When the device is mounted async, I can get up to much higher speeds. In a recent test, it worked fine at --bwlimit 900, but at --bwlimit 1000 the process hung and became unkillable (while true; do killall -9 rsync; done; -- didn't work, even after many minutes). This is all with linux 2.5.75. --Adam
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