Toby, If you write with multiple clients does it still stick to 9mb/s or does it increase? What is the network link between your client and the Riak CS cluster? On our internal CS cluster we were seeing around 2gb/s read+write at the network level so I know CS can take the speeds, so my gut thinks you single client might have a slow link. That is just a guess.
-Jared On May 27, 2013, at 1:38 AM, Toby Corkindale <toby.corkind...@strategicdata.com.au> wrote: > Hi, > I seem to be getting significantly slower performance out of Riak CS than I > expect to see, and I wondered if I could get some advice about where I might > be going wrong. > > I have a cluster of six nodes, with fairly good sequential-write disk > performance, for eg: > # dd if=/dev/zero of=test bs=1M count=500 conv=fsync > 524288000 bytes (524 MB) copied, 1.27205 s, 412 MB/s > > The riak partition is formatted as ext4, with data=writeback and barriers > disabled. > > So given n_val=3, and six nodes with ~400MB/s transfer rates, you'd expect to > see some pretty fast transfers, right? > > However the actual performance I'm getting is reliably a mere 9MB/s for a > single client writing to the cluster. (On a 500M transfer) > > > Is this kind of performance normal for this hardware? > If not, could you give me some pointers about what to check? > > Thanks, > Toby > > > _______________________________________________ > riak-users mailing list > riak-users@lists.basho.com > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com _______________________________________________ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
