Re: Performance Benchmark for PTI (aka Meltdown mitigation)

2018-03-13 Thread Slawa Olhovchenkov
On Mon, Mar 12, 2018 at 04:36:05PM -0400, Arshan Khanifar wrote: > I did some benchmarking for the two revisions: > results are here: > https://github.com/ArshanKhanifar/pti-benchmark/tree/master/stable-11-pre-after/results > first file is before pti patch and second file is after pti patch. 10x!

Re: Performance Benchmark for PTI (aka Meltdown mitigation)

2018-03-12 Thread Arshan Khanifar
I did some benchmarking for the two revisions: results are here: https://github.com/ArshanKhanifar/pti-benchmark/tree/master/stable-11-pre-after/results first file is before pti patch and second file is after pti patch. On Fri, Mar 9, 2018 at 10:16 AM, Slawa Olhovchenkov wrote: > On Fri, Mar 09,

Re: Performance Benchmark for PTI (aka Meltdown mitigation)

2018-03-09 Thread Slawa Olhovchenkov
On Fri, Mar 09, 2018 at 09:58:55AM -0500, Ed Maste wrote: > On 9 March 2018 at 07:01, Slawa Olhovchenkov wrote: > > On Thu, Mar 08, 2018 at 05:04:11PM -0500, Arshan Khanifar wrote: > > > >> Executive Summary: > >> - The PTI feature increases the system call times by more than 100%. > >> - As a ma

Re: Performance Benchmark for PTI (aka Meltdown mitigation)

2018-03-09 Thread Ed Maste
On 9 March 2018 at 07:01, Slawa Olhovchenkov wrote: > On Thu, Mar 08, 2018 at 05:04:11PM -0500, Arshan Khanifar wrote: > >> Executive Summary: >> - The PTI feature increases the system call times by more than 100%. >> - As a macrobenchmark, buildworld was used. Wall clock and user time >> showed n

Re: Performance Benchmark for PTI (aka Meltdown mitigation)

2018-03-09 Thread Slawa Olhovchenkov
On Thu, Mar 08, 2018 at 05:04:11PM -0500, Arshan Khanifar wrote: > Executive Summary: > - The PTI feature increases the system call times by more than 100%. > - As a macrobenchmark, buildworld was used. Wall clock and user time > showed no statistically-significant changes, while system time > inc