[suse-oracle] OCFS2, blockdev and readahead

Greetings, listers

Oracle 10.2.0.2, OCFS2, single instance database, NetApp FCP disks

filesystemio_options=setall
db_file_multiblock_read_count=128

Do we need to set readahead to greater than 0 for OCFS2? What would be ideal value? How to measure impact - positive/negative?

Storage admins would prefered "blockdev --setra" to be set to maximum value, to speed up filesystem backups. On the other hand, since oracle will use O_DIRECT on OCFS2, I believe we don't need readahead to be set.

Thanks in advance,
Vladimir Barac
Database administrator | Alghanim Industries
P.O. Box 223, Safat 13003, Kuwait
Tel: +965 1881 111  / ext. 2960
[cid:[email protected]]


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