Messages in this thread |  | | From | Daniel Phillips <> | Subject | Re: page_launder() on 2.4.9/10 issue | Date | Thu, 6 Sep 2001 18:45:52 +0200 |
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On September 6, 2001 03:18 pm, Kurt Garloff wrote: > On Thu, Sep 06, 2001 at 10:03:03AM -0300, Rik van Riel wrote: > > On Thu, 6 Sep 2001, Daniel Phillips wrote: > > > On September 6, 2001 02:32 pm, Rik van Riel wrote: > > > > Two words: "IO clustering". > > > > > > Yes, *after* the IO queue is fully loaded that makes sense. Leaving it > > > partly or fully idle while waiting for it to load up makes no sense at all. > > > > > > IO clustering will happen naturally after the queue loads up. > > > > Exactly, so we need to give the queue some time to load > > up, right ? > > Just use two limits: > * Time: After some time (say two seconds), we can always afford to write it > out > * Queue filling: After it has a certain size, it's worth doing a writing.
Err, not quite the whole story. It is *never* right to leave the disk sitting idle while there are dirty, writable IO buffers.
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