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Re: Weirdness

From: C. Michael Pilato <cmpilato_at_collab.net>
Date: 2006-06-14 18:38:46 CEST

Garrett Rooney wrote:
> On 6/13/06, C. Michael Pilato <cmpilato@collab.net> wrote:
>> Ouch. That really didn't pan out well for me. I walked away from my
>> computer to work on a different one, and when I came back, it was
>> basically
>> unresponsive (resource-strapped). Guess I crossed the stack depth
>> line of
>> no return. Anyway, a reboot later, I can confirm that my commit actually
>> happened. Post-commit deltification? I kinda doubt that finished...
> Hmm. I wonder if it's stack depth, or just memory usage. If it's
> stack depth, we can avoid that by simply rewriting the algorithm to
> not be recursive (using an explicit stack rather than the C call
> stack, etc), the problem is if we're just running out of memory
> because each level of recursion uses an APR pool the fix is far less
> straitforward...
> FWIW, I suspect it's not an easy fix. If you'd run out of C stack
> you'd probably have crashed, as opposed to just slowing to a crawl...

Actually, I wonder if we couldn't simply switch from a
crawl-the-tree-to-find-modified-things (recursive) approach to an
ask-the-changes-file-what-changed (iterative) approach?

C. Michael Pilato <cmpilato@collab.net>
CollabNet   <>   www.collab.net   <>   Distributed Development On Demand

Received on Wed Jun 14 18:49:00 2006

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