[Monotone-devel] Re: Monotone hangs while reading branch from depot

[graydon hoare]

Peter Simons wrote:
> I've tried reading the branch "system.www.cryp.to" from the
> local depot into a newly created database. Monotone will
> process everything up to packet 63, but then it just sits
> there, eating up all CPU cycles, apparently doing nothing.
>
> I ran it with --verbose and captured the output here:
>
>     http://peti.cryp.to/monolog
>
> I updated both depot.cgi and monotone to the very latest
> versions, but that doesn't seem to help. Any idea what might
> cause this?

the only "infinite loop" circumstances I've seen which *don't* involve 
reading the same db rows over and over (ancestry graph loops) are 
related to crypto++ going nuts after being built with -O2 on an 
unpatched g++, such as on debian.

from your log, I'd suspect it's happening in a support library (since 
there isn't an infinite stream of logging messages, which I tend to 
litter all over monotone's code), but that's just a guess. could you 
perhaps oprofile or gdb it and see where it's spinning? maybe there's 
some way to wedge the packet regex or something.

-graydon