[distcc] Multiple people running distcc at once, using one DISTCC_DIR

[Daniel Kegel]

Victor Norman wrote:
> --- Daniel Kegel <dank at kegel.com> wrote:
> 
>>I don't think you should be sharing a .distcc directory between
>>multiple users.  It's not a common configuration, and there are
>>sure to be problems.
> 
> Does "the community" agree?  I thought this was the recommended setup.

http://distcc.samba.org/faq.html#monitor-nfs says
"Having DISTCC_DIR on NFS doesn't work well at the moment.
Please set DISTCC_DIR to a local directory instead."

> If I don't share a common .distcc directory then how do I solve my worst-case
> scenario: 15 developers suddenly have to compile the entire tree.  They all put
> only the best hosts into their host files (because, after all, they each want a
> really fast compile), and they all start up their compilation.  The result is a
> bunch of blocked distcc tcp connects to machines with long tcp "listen" queues,
> and ultimately, very slow compiles...

Easy.  Give up on the idea of having fast and slow machines in the cluster.
Toss out all the slow ones.  Treat all the remaining machines as identical.
Randomization then does the trick for you.
- Dan