2012/3/16 Noah Watkins <[email protected]>: > > On Mar 16, 2012, at 8:37 AM, Sage Weil wrote: > >> Hi Andrey, >> >> On Fri, 16 Mar 2012, Andrey Stepachev wrote: >> >> possible). I take it TestDSFIO is a standard hadoop benchmark? > > Yes, this is. There are a number of benchmarks that ship with Hadoop. > Although this is untested, one reason you might be seeing throughput issues > is with the standard read/write interface that copies bytes across the JNI > interface. On the short list of stuff for the next Java wrapper set is to use > the ByteBuffer interface (NIO) to avoid this copying.
I'm not sure, that problem on java side. All disks loaded at 100%, so I think, that problem clearly on osd part. But i want to test your new integration and see, if something changes. You maybe right, but I'm not. > > - Noah -- Andrey. -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
