We have now tested 2.4.4 with the o_direct-5 patch,
and it still works perfectly.
I sent an email about two weeks ago asking if the O_DIRECT
patch by Andrea Archangeli would be included in 2.4.4.
2.4.4 has since been released, but only with the rawio
patch, which Andrea considered as a bugfix patch.
The O_DIRECT patch is in my view really important
for high data volume applications that do
caching internally. The performance graph
I posted earlier should be enough evidence.
If I remember correctly, Stephen Tweedie implemented
O_DIRECT support already back in 1999. Why this
implementation was not included, I do not know.
Linux would be lacking behind other OSs if not
O_DIRECT support is added. All major commercial
OSs have this capability.
-- Michael Susæg, M.Eng. Mail: Michael.Susag@fast.no Software Engineer Web: http://www.fast.no/ Fast Search & Transfer ASA Phone: +47 21 60 12 27 P.O. Box 1677 Vika Fax: +47 21 60 12 01 NO-0120 Oslo, NORWAY Mob: +47 90 06 38 70Try FAST Search: http://www.alltheweb.com/
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