also sprach martin f krafft <madd...@madduck.net> [2010.03.16.1900 +0100]: > I use ext4 with data=ordered, and while notmuch is writing the > Xapian database, most I/O stalls on the machine: > > - Firefox does not get any mouse events > - Vim blocks writing the viminfo file > - All disk operations queue for multiple seconds. > > So no, ext4 is not a solution. Is it just me, or should no > filesystem of this world be able to hog a system this badly? I think > the culprit is the IO-scheduler.
I just wanted to send a little update on this. Even though the Linux I/O
scheduler performs abysmally during the Xapian database updates,
I can report two improvements, at least to my situation:
1. The 3.0 kernel seems to be better, but I did not quantify this
in any way, and I might just as well be wrong.
2. http://bugs.debian.org/635768 explains the (also I/O-related)
lockups we've seen. Micah offered the tip that the actual fault
lies with the awesome WM.
Cheers,
--
martin | http://madduck.net/ | http://two.sentenc.es/
"writing a book about debian
is like hitting a moving target
with a champagne bottle cork."
-- arky
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