Stress-Test the Mercurial revlog; was: Hash collision

[Arne Babenhauserheide]

Am Mittwoch 29 April 2009 20:29:55 schrieb Bill Barry:
> Brian Mearns wrote:
> > Thanks for the thorough feedback. I'll set up a script to commit every
> > second, and once the age of the Universe has reached about 10^31 times
> > what it is now, I should get my moment in the sun!
>
> I think it'd actually be quite humorous if someone wrote a script that
> did something like this:

...

> and then ran it as a cronjob every second against some centralized repo
> from a hundred machines or so.

This idea kinda gripped me, so now heres the distributed hg burner :) 
- http://bitbucket.org/ArneBab/distributed_hg_burner/

Care to join me in stress-testing my local Mecurial installation? It's just 
three simple steps: 

$ hg clone http://bitbucket.org/ArneBab/distributed_hg_burner/ 
$ cd distributed_hg_burner
$ python burn.py

It does at most 2 commits per second, and it uses a python script to avoid 
loading python for each run - mercurial.dispatch.dispatch(["command"]) is 
great! 

Race conditions will only lead to bigger pushes (first push aborts, then it 
pulls, merges and tries to push again - that's directly from Brians script 
suggestion), so they should create no problem. 

If you want to stop it, you'll need to use ctrl-c, since I just use a while 
loop instead of a cron job :) 

I'd be glad to see you in the hg burner log, soon! 
Arne

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