Hey everyone -<br><br>Nick and I have completed our modifications to store metadata and data separately and are in the process of testing/benchmarking. Our initial results are incredibly good (on the order of nearly twice as fast as 2.8.1) but we're wondering if maybe we should tune the standard release a bit to make it a more fair comparison.<br>
<br>Our setup is as follows:<br><br>3 I/O nodes, each serving metadata and data<br>Dual core Opterons in each node<br>10 Gbit Myrinet interconnects (PVFS2 runs on this)<br>1 Gbit management network<br>Infiniband is in the works, we'll test on this as well<br>
Data is on a 1 TB Seagate 7200.11 (metadata as well for the 2.8.1 release)<br>Metadata is stored on an Intel X-25E for our new code<br><br><br>We haven't tuned anything in particular on either version of PVFS2. It has been suggested we increase the amount of data written before syncing metadata to about 4 MB to decrease the load on the metadata server. Is this a good idea and does anyone have any tips or links to point me toward to make this a better comparison?<br>
<br>Thanks!<br><br>- Dave<br>