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[Gnu-arch-users] Re: [PATCH] arch speedups on big trees
From: |
Miles Bader |
Subject: |
[Gnu-arch-users] Re: [PATCH] arch speedups on big trees |
Date: |
09 Jan 2004 10:51:18 +0900 |
Miles Bader <address@hidden> writes:
> > How big is big? In order for reading the file twice to hurt, it
> > would have to be a considerable percentage of the system ram. The
> > fork+exec cost is pretty high compared to the overhead of the double
> > read, especially when you consider that for most commits most of the
> > files are unchanged.
>
> The real problem is that I don't know, and I suspect the actual details
> vary per filesystem. I think with such filesystems as NFS, there are
> limits on file caching much lower than theoretical ones such as RAM size.
Oh, also, I'm currently kind of fixated on NFS.... you're probably
right that using arch_binary_files_differ is better for the majority of
cases.
-miles
--
Saa, shall we dance? (from a dance-class advertisement)
- Re: [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, (continued)
- Re: [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Chris Mason, 2004/01/07
- [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Miles Bader, 2004/01/07
- [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Chris Mason, 2004/01/08
- [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Miles Bader, 2004/01/08
- [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Chris Mason, 2004/01/08
- [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Miles Bader, 2004/01/09
- [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Chris Mason, 2004/01/08
- Re: [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Tom Lord, 2004/01/08
- Re: [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Chris Mason, 2004/01/08
- [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Miles Bader, 2004/01/08
- [Gnu-arch-users] Re: [PATCH] arch speedups on big trees,
Miles Bader <=
- [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Chris Mason, 2004/01/09
- [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Miles Bader, 2004/01/09
- [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Chris Mason, 2004/01/10
- [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Miles Bader, 2004/01/10
- [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Chris Mason, 2004/01/11
- Re: [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, conrad, 2004/01/10
- Re: [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Aaron Bentley, 2004/01/10
- Re: [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Chris Mason, 2004/01/09
- Re: [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Aaron Bentley, 2004/01/09
- Re: [Gnu-arch-users] Re: [PATCH] arch speedups on big trees, Chris Mason, 2004/01/09