Jens Axboe <[EMAIL PROTECTED]> writes: > > modification Peter suggested there can be more and we should track the one > > more on the back of the queue. I don't think it's worthwhile. > > Agree, I don't think the added complexity would be worth it. So that leaves two choices: 1. Perfect elevator (CSCAN) without the O(1) optimization. (My second patch.) 2. Suboptimal elevator with the O(1) optimization. (Andrea's suggested modification to my second patch.) Since the request queue can not be very long, minimizing disk head movements ought to be more important than saving a few CPU cycles, so I vote for the first alternative. -- Peter Österlund Email: [EMAIL PROTECTED] Sköndalsvägen 35 [EMAIL PROTECTED] S-128 66 Sköndal Home page: http://home1.swipnet.se/~w-15919 Sweden Phone: +46 8 942647 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
- Re: An elevator algorithm (patch) Rik van Riel
- Re: An elevator algorithm (patch) Andrea Arcangeli
- Re: An elevator algorithm (patch) Peter Osterlund
- Re: (reiserfs) Re: An elevator algo... Jens Axboe
- Re: (reiserfs) Re: An elevator algo... Andrea Arcangeli
- Re: (reiserfs) Re: An elevator algo... Jens Axboe
- Re: (reiserfs) Re: An elevator algo... Andrea Arcangeli
- Re: (reiserfs) Re: An elevator algo... Jens Axboe
- Re: (reiserfs) Re: An elevator algo... Andrea Arcangeli
- Re: (reiserfs) Re: An elevator algo... Jens Axboe
- Re: An elevator algorithm Peter Osterlund
- Re: An elevator algorithm Andrea Arcangeli
- Re: An elevator algorithm (patch) Andrea Arcangeli
- Re: (reiserfs) Re: An elevator algo... Jens Axboe
- Re: An elevator algorithm (patch) Marcelo Tosatti
- Re: An elevator algorithm (patch) Andrea Arcangeli
- Re: An elevator algorithm (patch) Peter Osterlund
- Re: An elevator algorithm (patch) Andrea Arcangeli
- Re: (reiserfs) Re: An elevator algorithm Hans Reiser
- Re: (reiserfs) Re: An elevator algorithm Xuan Baldauf
- Re: (reiserfs) Re: An elevator algorithm Ragnar Kjørstad