Messages in this thread | | | Date | Mon, 23 Aug 1999 10:06:43 -0700 | From | Peter Monta <> | Subject | Re: Streaming disk I/O kills file buffering and makes Linux unusable |
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> Will future kernels ave an O_DIRECT like flag to avoid caching ?
Stephen Tweedie has written a patch for unbuffered I/O; the URL I have from some time ago is
ftp://ftp.linux.org.uk/pub/linux/sct/fs/raw-io
though this host doesn't seem to respond at the moment. I believe Stephen has mentioned that this will go into the main tree at some point. (Possibly it's already in 2.3.x---I haven't looked recently.)
> I think without some buffer-cache usage limiting, or buffering disabling, > Linux is actually UNSUITABLE for streaming applications which do run > concurrently with other apps.
I agree; the raw-io system will make this much more pleasant.
Cheers, Peter Monta pmonta@imedia.com Imedia Corp.
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