Subject: Re: UBC, interactive performance, etc
To: None <firstname.lastname@example.org>
From: Matthew Jacob <email@example.com>
Date: 04/03/2001 22:42:46
On 4 Apr 2001 firstname.lastname@example.org wrote:
> > Chuq's performance patch, as I understand it, tries to insure the system
> > retains a minimum number of pages of a specific type. I prefer to try
> > something that tries to predict the likelyhood of reuse rather than put
> > restrictions on the number of pages of any particular type in use.
> ok, what algorithm would you use to predict the likelihood of reuse?
> no one has tried to justify one algorithm or another on this basis so far.
> That's a bit tough. First, I would observe that in general, buffer cache
> pages that were just written to are unlikely to be used again soon. Most
> programs write something then move on. But then someone else will bring
> up the temporary files between compiler stages to refute that.....
Don't try and solve it for temp files. They should be a pure MFS filesystem
anyway, where none of this should matter, or the compiler should be using
pipes between stages.