On Fri, January 8, 2010 11:31, Garrett Moore wrote: > No, I haven't isolated the cause to only be uptime related. In my original > email I mentioned that "as suggested by someone in the thread, it's > probably > not directly related to system uptime, but instead related to usage - the > more usage, the worse the performance." > > I've been starting my system with different combinations of applications > running to see what access patterns cause the most slowdown. So far, I > don't > have enough data to give anything concrete. > > This weekend I'll try some tests such as the one you describe, and see > what > happens. I have a strong suspicion that rTorrent is to blame, since I > haven't seen major slowdowns in the last few days with rTorrent not > running. > rTorrent preallocates the space needed for the file download (and I'm > downloading large 4GB+ files using it), and then writes to them in an > unpredictable pattern, so maybe ZFS doesn't like being touched this way?
Probably unrelated, but this prefetch issue results in a slowdown: http://lists.freebsd.org/pipermail/freebsd-fs/2009-December/007481.html -Jonathan _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
