Re: scsi vs ide performance on fsync's

Alan Cox
2001-03-06T12:09:01Z

> > I don't know if there is any way to turn of a write buffer on an IDE disk.
> You want a forced set of commands to kill caching at init?

Wrong model

You want a write barrier. Write buffering (at least for short intervals) in
the drive is very sensible. The kernel needs to able to send drivers a write
barrier which will not be completed with outstanding commands before the
barrier.