>>>>> "Badari" == Badari Pulavarty <[email protected]> writes:
Badari> What kernel are you running ? Does the kernel has ext3
Badari> "reservation" support enabled ?
2.6.11, and yes, although it's not set in the mount options.
Badari> Do you see performance problem
Badari> with "read" tests also ?
Yes.
Badari> And also, does the write test writes
Badari> to multiple files in the same directory ? Or multiple threads
Badari> writing to same file ?
It's standard iozone --- mutliple processes writing to multiple files in
the same directory.
All the mount options are the defaults.
A sample test is:
mdadm -Ss
mdadm -C /dev/md0 -l 0 -c 1024 -n 2 -R /dev/sdc /dev/sdk
mke2fs -j /dev/md0
mount /dev/md0 /shift/oplapro97/data01
cd /shift/oplapro97/data01
iozone -MCew -t1 -f IOZONE -s32g -r256k -i0 -i1 > ~/tests/unsw_ext3/iozone_2_disk_1stream_ext3
rm -rf /shift/oplapro97/data01/*
iozone -MCew -t2 -f IOZONE -s32g -r256k -i0 -i1 > ~/tests/unsw_ext3/iozone_2_disk_2stream_ext3
--
Dr Peter Chubb http://www.gelato.unsw.edu.au peterc AT gelato.unsw.edu.au
The technical we do immediately, the political takes *forever*
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