Messages in this thread |  | | Date | Tue, 12 Sep 2000 10:36:46 -0300 (BRST) | From | Rik van Riel <> | Subject | Re: More on 2.2.18pre2aa2 |
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On Tue, 12 Sep 2000, Andrea Arcangeli wrote: > On Tue, 12 Sep 2000, Rik van Riel wrote: > > >We simply keep track of how old the oldest request > >in the queue is, and when that request is getting > >too old (say 1/2 second), we /stop/ all the others > > Going in function of time is obviously wrong. A blockdevice can > write 1 request every two seconds or 1 request every msecond. > You can't assume anything in function of time _unless_ you have > per harddisk timing informations into the kernel.
Uhmmm, isn't the elevator about request /latency/ ?
And if so, in what unit do you want to measure latency if it isn't time?
regards,
Rik -- "What you're running that piece of shit Gnome?!?!" -- Miguel de Icaza, UKUUG 2000
http://www.conectiva.com/ http://www.surriel.com/
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