lkml.org 
[lkml]   [1999]   [Jul]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [RFC] - Some notions that I would like comments on
    Jeff Dike wrote:
    > > 2. Most applications will look at data as soon as it's read from the
    > > disk -- so you probably won't get much of a performance advantage
    >
    > What I had in mind are things like compilers which go chugging
    > sequentially through a file and do expensive stuff on it (like
    > parsing). It ought to be pretty easy for the I/O to stay ahead of the
    > parse, and maybe a useful amount of parsing can be done before the
    > data all comes in.

    This is done already and automatically -- it's called readahead.
    The kernel detects when you're reading sequentially and then
    reads ahead.

    We don't do it on mmaped areas yet though.

    -- Jamie

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.rutgers.edu
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:52    [W:0.020 / U:134.712 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site