Hello all I am running test between an X4150 and SGI Altix with luster 1.6.6 and I can see a read performance drop on the SGI.
Numbers: X4150 dd if=/dev/zero of=/mnt/exec4_client_ib/mike/4/bigfile bs=4096k count=10000 (336MB/s) this a folder with a stripe of 4 for all tests dd if=/mnt/exec4_client_ib/mike/4/bigfile of=/dev/null bs=4096k (461MB/s) SGI Altix dd if=/dev/zero of=/mnt/exec4_client_ib/mike/4/bigfile bs=4096k count=2000 (371MB/s) 99% of the core is running dd dd if=/mnt/exec4_client_ib/mike/4/bigfile of=/dev/null bs=4096k (142MB/s) 20% is running dd and 80% is running ptlrpcd The X4140 is running: 2.6.18-92.1.10.el5_lustre.1.6.6smp #1 SMP Tue Aug 26 12:16:17 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux Red Hat Enterprise Linux Server release 5.2 (Tikanga) The SGI is running: SGI Altix systems 2.6.16.46-0.12-default #1 SMP Thu May 17 14:00:09 UTC 2007 4 ia64 ia64 GNU/Linux cat /etc/issue Welcome to SUSE Linux Enterprise Server 10 SP1 (ia64) We compiled lustre 1.6.6 on the SGI and everything works but the read performance is slowed down by the ptlrpcd. What should we look at to fix. Thanks Michel _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
