Hello, Has anybody else noticed that native (as in the RH supplied drivers) Infiniband performance is markedly worse off in RHEL 5.x than it was in RHEL 4.x?
I've been trying the latest OFED drivers (1.3) from OpenFabrics, but have also found them to be pretty dismal. We're mounting a disk over the Infiniband we're not seeing much performance above 150MB/s read and 250MB/s write. When the disk is directly connected via SAS, we're seeing nearly 395MB/s write and 500MB/s read, which we expect from the kit that we're using. I've tried using the latest SRPT code and that doesn't seem to make much difference. We're using Mellanox InfiniHost III Ex cards at both ends of the connection. The openib tools report that the connection is active and that it's running at 20Gb/s. Does anybody have any suggestions as to squeezing more performance out of RHEL for Infiniband? Are we likely to see improvements for RHEL 5.2? Regards, Martyn -- Martyn Drake http://www.drake.org.uk _______________________________________________ rhelv5-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/rhelv5-list
