Re: [9fans] nix scheduler changes

2014-05-27 Thread erik quanstrom
> Nice. Excited to see how a cleaned up + simplified runproc() and the > per-Mach queues could also change things. Any reason why the ping test > w/ monmwait wasn't consistent with the performance improvement in > other areas? yes there is. in a later post i describe it, but basically what i saw

Re: [9fans] nix scheduler changes

2014-05-27 Thread Jessica Yu
On Mon, May 26, 2014 at 1:14 PM, erik quanstrom wrote: > so, i've done a little bit more work characterizing the performance > of the scheduler correctness changes, and i know have some understanding > on why e.g. ping times are a bit slower. > > the old code essentially let processor 0 spin in ru

[9fans] nix scheduler changes

2014-05-26 Thread erik quanstrom
so, i've done a little bit more work characterizing the performance of the scheduler correctness changes, and i know have some understanding on why e.g. ping times are a bit slower. the old code essentially let processor 0 spin in runproc, other processors called halt. the new code uses monmwait