Well, lookee what I found. Since I am not smart enough to know exactly
when to give up, I installed GlusterFS 3.3.0 in place of 3.2.6 on both
servers and clients. Using the tests (file foo.bar being on the GlusterFS
volume):
dd if=/dev/zero of=foo.bar bs=1024k count=1000
dd if=foo.bar of=/dev/null bs=1024k
I find the following client performance, using a distributed volume of 2
bricks and no replication, and with no further tuning:
GlusterFS 3.2.6:
read = 13 MB/sec
write = 45 MB/sec
GlusterFS 3.3.0:
read = 54 MB/sec
write = 97 MB/sec
Firefox, running from a GlusterFS-based home volume, is also nearly three
times faster to open with 3.3.0 than with 3.2.6 (I have a bunch of tabs,
and it now opens in 4 seconds vs 11 seconds).
Read performance is still a bit lower than I'd like, but what an
improvement. And I have no idea why.
Steve
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