With no performance translators at all, I still get what appears to be
memory leakage, but this time when doing metadata-heavy tasks. With
copies going of /usr to the GlusterFS, glusterfs slowly increases memory
consumption and glusterfsd consumes memory at a much more rapid pace (but
both are much slower than the glusterfs leakage reported earlier):
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3047 root 16 0 166m 165m 712 S 42 4.2 11:51.19 glusterfsd
3068 root 15 0 25344 23m 748 S 36 0.6 11:23.24 glusterfs
Heavy data operations don't cause noticeable increases in memory
consumption of either process in this setup.
Thanks,
Brent
On Tue, 6 Mar 2007, Brent A Nelson wrote:
I've narrowed the observed memory leak down to the read-ahead translator. I
can apply stat-prefetch and write-behind without triggering the leak in my
simple test, but read-ahead will cause memory consumption in the glusterfs
process to slowly increase for a little while and then suddenly start
increasing very rapidly.
Thanks,
Brent
On Tue, 6 Mar 2007, Brent A Nelson wrote:
I can reproduce the memory leak in the glusterfs process even with just two
disks from two nodes unified (it doesn't just occur with mirroring or
striping), at least when all performance translators are used except for
io-threads (io-threads causes my dd writes to die right away).
I have 2 nodes, with glusterfs unifying one disk from each node. Each node
is also a client. I do a dd on each node, simultaneously, with no problem:
node1: dd if=/dev/zero of=/phys/blah0 bs=10M count=1024
node2: dd if=/dev/zero of=/phys/blah1 bs=10M count=1024
When doing a read on each node simultaneously, however, things go along for
awhile, but then glusterfs starts consuming more and more memory until it
presumably runs out and ultimately dies or becomes useless.
Can anyone else confirm? And has anyone gotten io-threads to work at all?
These systems are running Ubuntu Edgy, with just the generic kernel and
Fuse 2.6.3 applied.
Thanks,
Brent
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