Hi, I made simple write speed test. I have 3 nodes: node1 node2 have 1000Mbps network card. node3 has a fast ethernet (100Mbps). On my vm I run dd if=/dev/zero of=deleteme bs=1M count=512 speed avarage is 7,1MB/s. I removed node3 from the cluster, because I think it slows down everything. I waited till the cluster finished to copy the missing chinks, then I run the same test. The speed was 9,1MB/s, so still like a fast ethernet. I was also looking atop during the test on node1 and node2: the disk was never busy more than 70%. What do you think about it? Shouldn't it be faster? |