[Gluster-users] Gluster-users Digest, Vol 9, Issue 66

Evan _Gluster at devnada.com
Thu Jan 22 20:44:49 UTC 2009


I have a 2 node single process AFR setup with 1.544Mbps bandwidth between
the 2 nodes. When I write a 1MB file to the gluster share it seems to AFR to
the other node in real time killing my disk IO speeds on the gluster mount
point. Is there anyway to fix this? Ideally I would like to see near real
disk IO speeds from/to the local gluster mount point and let the afr play
catch up in the background as the bandwidth becomes available.

Gluster Spec File (same on both nodes) http://pastebin.com/m58dc49d4
IO speed tests:
# time dd if=/dev/urandom of=/mnt/gluster/disktest count=1024 bs=1024
1024+0 records in
1024+0 records out
1048576 bytes (1.0 MB) copied, 8.34701 s, 126 kB/s

real    0m8.547s
user    0m0.000s
sys     0m0.372s

# time dd if=/dev/urandom of=/tmp/disktest count=1024 bs=1024
1024+0 records in
1024+0 records out
1048576 bytes (1.0 MB) copied, 0.253865 s, 4.1 MB/s

real    0m0.259s
user    0m0.000s
sys     0m0.284s


Thanks
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