> > I ran a basic test by writing 1G to an NFS server and this gluster pair: > [root at glust1 ~]# time dd if=/dev/zero of=/mnt/glust2_nfs/nfs_test > bs=65536 count=15625 > 15625+0 records in > 15625+0 records out > 1024000000 bytes (1.0 GB) copied, 1718.16 seconds, 596 kB/s > > real ? ?28m38.278s > user ? ?0m0.010s > sys ? ? 0m0.650s > [root at glust1 ~]# time dd if=/dev/zero of=/mnt/glust/glust_test bs=65536 > count=15625 > 15625+0 records in > 15625+0 records out > 1024000000 bytes (1.0 GB) copied, 3572.31 seconds, 287 kB/s > > real ? ?59m32.745s > user ? ?0m0.010s > sys ? ? 0m0.010s > The default block size in which dd operates is 512 bytes, which used to be fine for local disks long ago, and has always been disastrous for network filesystems. Please use a bigger block size (like 64KB or higher) and rerun your tests. We would also suggest you to try our latest 2.0.3 release. Avati
