Re: [PATCH 2/2] sched,time: call __acct_update_integrals once a jiffy

2016-01-30 Thread Mike Galbraith
On Sun, 2016-01-31 at 03:52 +0100, Mike Galbraith wrote: > On Sat, 2016-01-30 at 21:36 +0100, Frederic Weisbecker wrote: > > On Sat, Jan 30, 2016 at 06:53:05PM +0100, Mike Galbraith wrote: > > > On Sat, 2016-01-30 at 15:20 +0100, Frederic Weisbecker wrote: > > > > On Fri, Jan 29, 2016 at 05:43:28PM

Re: [PATCH 2/2] sched,time: call __acct_update_integrals once a jiffy

2016-01-30 Thread Mike Galbraith
On Sat, 2016-01-30 at 21:36 +0100, Frederic Weisbecker wrote: > On Sat, Jan 30, 2016 at 06:53:05PM +0100, Mike Galbraith wrote: > > On Sat, 2016-01-30 at 15:20 +0100, Frederic Weisbecker wrote: > > > On Fri, Jan 29, 2016 at 05:43:28PM -0500, Rik van Riel wrote: > > > > > > Run times for the microb

Re: [PATCH 2/2] sched,time: call __acct_update_integrals once a jiffy

2016-01-30 Thread Frederic Weisbecker
On Sat, Jan 30, 2016 at 06:53:05PM +0100, Mike Galbraith wrote: > On Sat, 2016-01-30 at 15:20 +0100, Frederic Weisbecker wrote: > > On Fri, Jan 29, 2016 at 05:43:28PM -0500, Rik van Riel wrote: > > > > Run times for the microbenchmark: > > > > > > 4.4 3.8 seconds > > >

Re: [PATCH 2/2] sched,time: call __acct_update_integrals once a jiffy

2016-01-30 Thread Mike Galbraith
On Sat, 2016-01-30 at 15:20 +0100, Frederic Weisbecker wrote: > On Fri, Jan 29, 2016 at 05:43:28PM -0500, Rik van Riel wrote: > > Run times for the microbenchmark: > > > > 4.4 3.8 seconds > > 4.5-rc1 3.7 seconds > > 4.5-rc1 + first patch

Re: [PATCH 2/2] sched,time: call __acct_update_integrals once a jiffy

2016-01-30 Thread Frederic Weisbecker
On Fri, Jan 29, 2016 at 05:43:28PM -0500, Rik van Riel wrote: > On 01/29/2016 05:23 PM, r...@redhat.com wrote: > > From: Rik van Riel > > > This speeds up > > ... ok, that changelog got truncated :( > > Here is the full version: > > > Because __acct_update_integrals does nothing unless the ti

Re: [PATCH 2/2] sched,time: call __acct_update_integrals once a jiffy

2016-01-29 Thread Rik van Riel
On 01/29/2016 05:23 PM, r...@redhat.com wrote: > From: Rik van Riel > This speeds up ... ok, that changelog got truncated :( Here is the full version: Because __acct_update_integrals does nothing unless the time interval in question exceeds a jiffy, there is no real reason to call it more tha