Re: Streaming disk I/O kills file buffering and makes Linux unusable

Dave Mielke (dave@mielke.cc)
Mon, 23 Aug 1999 20:48:51 -0400 (EDT)

On Mon, 23 Aug 1999, Benno Senoner wrote:
>In this case I don't need raw I/O to get fast response or higher throughput,
>but only to avoid that the streaming apps do not monopolizes the buffer, which
>is very bad.

You probably don't want strict raw I/O, as there would be considerable benefit
in some sort of read-ahead buffering. What you want is an open/fcntl attribute
which would instruct the kernel that you don't intend to do a seek, in which
case it can free each buffer as soon as it has been fully read.

-- 
Dave Mielke           | 856 Grenon Avenue | I believe that the Bible is the
Phone: 1-613-726-0014 | Ottawa, Ontario   | Word of God. Please contact me
EMail: dave@mielke.cc | Canada  K2B 6G3   | if you're concerned about Hell.




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