Re: stable/11 r329462 - Meltdown/Spectre MFC questions

2018-02-17 Thread Kevin Oberman
On Sat, Feb 17, 2018 at 12:38 PM, Pete French wrote: > > > On 17/02/2018 20:19, Matt Smith wrote: > > And thank you for pointing this out. I can now just wait a while to see >> what comes along rather than accidentally upgrading it and killing the >> already really slow performance. >> >> I was j

Re: stable/11 r329462 - Meltdown/Spectre MFC questions

2018-02-17 Thread Pete French
On 17/02/2018 20:19, Matt Smith wrote: And thank you for pointing this out. I can now just wait a while to see what comes along rather than accidentally upgrading it and killing the already really slow performance. I was just looking at this too, and wondering what (if any) the performance

Re: stable/11 r329462 - Meltdown/Spectre MFC questions

2018-02-17 Thread Matt Smith
On Feb 17 11:47, Jeremy Chadwick wrote: Reference: https://svnweb.freebsd.org/base?view=revision&revision=329462 Do the following new loader tunables and sysctls have documentation anywhere? I ask because I wish to know how to turn all of this off (yes you heard me correctly), as not all system

stable/11 r329462 - Meltdown/Spectre MFC questions

2018-02-17 Thread Jeremy Chadwick
Reference: https://svnweb.freebsd.org/base?view=revision&revision=329462 Do the following new loader tunables and sysctls have documentation anywhere? I ask because I wish to know how to turn all of this off (yes you heard me correctly), as not all systems necessarily require mitigation of these

Re: package building performance (was: Re: FreeBSD on AMD Epyc boards)

2018-02-17 Thread Rainer Duffner
> Am 17.02.2018 um 10:09 schrieb Don Lewis : > > It is unfortunate that there don't seem to be any server-grade Ryzen > motherboards. They all seem to be gamer boards with a lot of > unnecessary bling. That’s because few people use servers to build packages. Increasingly, all the other thin

Re: package building performance (was: Re: FreeBSD on AMD Epyc boards)

2018-02-17 Thread Don Lewis
On 14 Feb, Mark Linimon wrote: > On Wed, Feb 14, 2018 at 09:15:53AM +0100, Kurt Jaeger wrote: >> On the plus side: 16+16 cores, on the minus: A low CPU tact of 2.2 GHz. >> Would a box like this be better for a package build host instead of 4+4 cores >> with 3.x GHz ? > > In my experience, "it depe