Re: Performance Benchmark for PTI (aka Meltdown mitigation)

From: Slawa Olhovchenkov <slw_at_zxy.spb.ru>
Date: Fri, 9 Mar 2018 15:01:31 +0300
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
> increased by less than 5%.
> 
> This email contains the results for benchmarking the performance of the
> PTI patch on FreeBSD 12-current. As a microbenchmark, timing of
> getppid(2) system call was used, and as a macrobenchmark, a number of
> buildworld tasks were timed.
> 

Can you also run pre-patched kernel?
Received on Fri Mar 09 2018 - 11:18:13 UTC

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