What page size are you running on IA64? What networking? Kevin
Michel Dionne wrote: > 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 > _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
