Re: Mercurial repository

[Jonathan Larmour <jifl@jifvik.org>]

Daniel Berlin wrote:
> 
> I have thus installed mercurial, and it's web component (which is a
> simple python script) on sourceware.
> 
> The mirror is publicly available, and I am watching our logs and load
> from it to make sure it's not taking up a lot of cpu (so far, it is
> taking up roughly nothing).

It was observed before the recent reboot that sourceware was exhibiting a 
high level of disk activity, contributing to a high overall load, resulting 
in things like dropped anonsvn/cvs connections etc.  The nature of disk 
activity is that it's difficult to point the finger at the precise cause, 
but the mercurial script that pulls from svn seemed to be cropping up a lot.

So if you're going to be monitoring mercurial, please also consider its 
effect on disk, not just CPU. This won't show up in 'top' etc.

For now though, the load seems lower, and I couldn't say for definite what 
the difference is, but I do note the mercurial scripts no longer seem to be 
running (since the reboot).

Have a look at http://sourceware.org/mrtg/summary.html and in particular 
note http://sourceware.org/mrtg/pageio.html and how it changes at start of 
week 20. I don't know whether, if or how that corresponds to when mercurial 
(or the mercurial pull from svn script) started operation.

Jifl
-- 
--["No sense being pessimistic, it wouldn't work anyway"]-- Opinions==mine