I have 2 machines : - a mono-PIV with 512 MB, one 40 GB ide disk, RH9 2.4.20-8 and ext3 filesystems - a bi-Xeon with 2.5 GB, two 14 GB fwd scsi disks, RH9 2.4.20-9SGI_XFS_1.2.0smp and xfs filesystems both have oracle 8.1.7.3 installed, with exactly the same database (export/import) we wrote a test script (timing a sql query executed 20 times) to compare performance on the 2 machines on the PIV machine the test runs in 0.8 seconds, and on the Xeon machine it takes 1.1 seconds (many many tests, these are really definitive values) I need some advice to investigate. I read about "bounce buffering", "asynchronous io", shmmax values, and so on, One clue is that on the Xeon machine, cat /proc/meminfo always show very little buffer usage (steady 60k) whereas on the other I've more than 100m. I can't find anything helpful to solve this performance issue any help greatly appreciated TIA -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
