preemptable prefetching?

Tom M. Kroeger (tmk@cse.ucsc.edu)
15 Oct 1999 13:23:31 -0700

I'm work on an implementation of a predictive prefetching method in
Linux. I've got a situation where I'm quite able to predict what will
occur next with a high degree of accuracy, but am finding that the
prefetches that I'm queuing (using brw_page (READ,xxxx)) are causing
the demand driven I/O requests to take a good bit longer.

What I would like to set up do is prefetch using some sort of low
priority preemptable I/O request, such that any demand driven I/O
request would interrupt these low priority prefetch requests.

Is there a simple way to do this?

-- 


                       tmk


-----------------------------------------------------------------------
Tom M. Kroeger                           Pray for wind
Graduate Student, UC Santa Cruz      \    Pray for waves
e-mail: tmk@cse.ucsc.edu             |\    and Pray it's your day off!
http://www.cse.ucsc.edu/~tmk         |~\
(831) 459-4458                       |__\
(831) 426-9055 home                 ,----+--




-
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/