Re: [Gnu-arch-users] larger trees slowing down

[Tom Lord]

    > From: Dustin Sallings <address@hidden>

    >   I was trying to check out a tree with 2322 patches on a plane an hour 
    > or so ago starting from a cache at 2200 and found that it took a really 
    > long time to apply the 122 patches.  Each one was very slow, even 
    > though most changed about two or so files and were on the order of 5k.

    >   Should applying patch 2322 take considerably longer than patch 2?

    >   The entire thing took about 17 minutes.

122 patches will always take longer than, say 5 or 6 but what was most
likely making things particularly slow in that environment is some
combination of slow disk access and small memory (kernel caches
especially).

You don't mention if you were adding all 122 revisions to a library or
not.  The baseline work there would include O(122) tree traversals
which, if not cached and of a slow filesystem....

This is an example of why you might to toss in the occasional cacherev
and/or library update.

-t