Messages in this thread | | | From | Bartlomiej Zolnierkiewicz <> | Subject | Re: [PATCH] barrier patch set | Date | Wed, 31 Mar 2004 00:40:43 +0200 |
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On Wednesday 31 of March 2004 00:21, Jeff Garzik wrote: > Stephen C. Tweedie wrote: > > Yep. It scares me to think what performance characteristics we'll start > > seeing once that gets used everywhere it's needed, though. If every raw > > or O_DIRECT write needs a flush after it, databases are going to become > > very sensitive to flush performance. I guess disabling the flushing and > > using disks which tell the truth about data hitting the platter is the > > sane answer there. > > For IDE, O_DIRECT and O_SYNC can use special "FUA" commands, which don't > return until the data is on the platter.
Do you know of any drive supporting it? I don't.
Bartlomiej
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