xargs -P0 suport

[Mateusz Guzik]

On Fri, May 22, 2015 at 12:32:52PM -0400, Allan Jude wrote:
> There is some question about if nargs is a sane value for maxprocs in
> the negative case. 5000 does seem a bit high, and the behaviour can get
> wonky depending on the order you specify -P and -n together on the
> command line.
> 
> Any suggestions?
> 

GNU xargs imposes no limit whatsoever, but it also supports reallocating
its process table, while our xargs allocates one upfront and does not
change it.

I would say reading hard proc resource limit and using that as the limit
would do the job just fine.

-- 
Mateusz Guzik <mjguzik gmail.com>