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Date: Fri, 21 Feb 2014 18:13:19 -0500
From: Jung-uk Kim <jkim@FreeBSD.org>
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To: attilio@FreeBSD.org, Craig Rodrigues <rodrigc@freebsd.org>
Subject: Re: vm.pmap.pcid_enabled="0" seems to eliminate Java/Jenkins crashing
 problems in FBSD 10
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Cc: Dmitry Sivachenko <trtrmitya@gmail.com>, Xin Li <delphij@freebsd.org>,
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On 2014-02-21 17:54:58 -0500, Attilio Rao wrote:
> On Thu, Feb 20, 2014 at 5:45 AM, Craig Rodrigues
> <rodrigc@freebsd.org> wrote:
>> Hi,
>> 
>> I am followed Jung-uk Kim's advice here:
>> 
>> http://lists.freebsd.org/pipermail/freebsd-java/2014-February/010582.html
>>
>>
>>
>> 
and configured the one of the FreeBSD stable/10 VM's (running at r261732)
>> that I have running under BHyve with the following in
>> /boot/loader.conf:
>> 
>> vm.pmap.pcid_enabled="0"
> 
> IIRC PCID had to be already disabled by default as we saw it was 
> slower in the real world or I'm missing something?

No, it is enabled by default on all 10+ AFAICT.

http://svnweb.freebsd.org/base/head/sys/amd64/amd64/pmap.c?annotate=261781#l370
http://svnweb.freebsd.org/base/stable/10/sys/amd64/amd64/pmap.c?annotate=260467#l370
http://svnweb.freebsd.org/base/releng/10.0/sys/amd64/amd64/pmap.c?annotate=259065#l370

Jung-uk Kim
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