[Swift-devel] Re: scheduler changes to deal with fast-failing sites

Mihael Hategan hategan at mcs.anl.gov
Thu Jun 26 09:40:54 CDT 2008


That particular bit needs to be fast. I'll take a look at it.

On Thu, 2008-06-26 at 13:38 +0000, Ben Clifford wrote:
> r2058 results in scheduling hangs, due to the way in which the overloaded 
> host count is cached and not recomputed at the appropriate time.
> 
> The attached hacky patch demonstrates a different (more correct though 
> less efficient) was of counting the overloaded host count.
> 
> I can reliably get a hang after about 10 minutes running:
> 
>  cd tests/language-behaviour/
>  while true; do swift 0755-ext-mapper.swift ; done
> 
> which goes away with this patch.
> 
> Patch is at http://www.ci.uchicago.edu/~benc/overload-chk
> 




More information about the Swift-devel mailing list