P.S. we use single 10000Mbps NIC. I found the networks bandwidth is not a issue.
On Tue, Jan 28, 2014 at 4:49 PM, Mingfan Lu <[email protected]> wrote: > > Hi, > I have a distributed and replica=3 volume (not to use stripe ) in a > cluster. I used dd to write 120 files to test. I foundthe write performane > of some files are much lower than others. all these "BAD" files are stored > in the same three brick servers for replication (I called node1 node2 node3) > > e.g the bad write performance could be 10MBps while good performance could > be 150Mbps+ > > there are no problems about raid and networks. > If i stopped node1 & node2, the write performance of "BAD" files are the > similar to (even better) GOOD ones. > > One thing I must metion is the raids of node1 and node2 are reformated > for some reason, there are many self-heal activities to restore files in > node1 and node2. > Is the BAD write performance caused by aggresive self-heal? > How could I slow down the self-heal? > Any advise? > > >
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