RE: Linux buffer cache monitoring
- From: "Allen, Brandon" <Brandon.Allen@xxxxxxxxxxx>
- To: "Christo Kutrovsky" <kutrovsky.oracle@xxxxxxxxx>, "oracle-l" <oracle-l@xxxxxxxxxxxxx>
- Date: Wed, 3 Sep 2008 09:22:47 -0700
Hi Christo, thanks for the suggestion. I did eventually end up doing a
full Oracle install and created a test database with
filesystemio_options=setall. Too bad orion doesn't support directio -
hopefully they'll add it in a future release. Another workaround I used
for testing with orion to prevent caching was to flush the linux cache
immediately before the test by either creating a file larger than my RAM
and then deleting it, or using this trick on OEL5:
http://linux-mm.org/Drop_Caches (just be careful not to use that on
OEL4, or it may freeze the box like it did for me and you'll have to
reboot).
Regards,
Brandon
-----Original Message-----
From: Christo Kutrovsky [mailto:kutrovsky.oracle@xxxxxxxxx]
p.s.
why not test directly from Oracle? Just do a index lookup in a loop
with several sessions.
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