vm.pmap.pcid_enabled="0" seems to eliminate Java/Jenkins crashing problems in FBSD 10

[Jung-uk Kim]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 2014-02-21 17:54:58 -0500, Attilio Rao wrote:
> On Thu, Feb 20, 2014 at 5:45 AM, Craig Rodrigues
> <rodrigc at 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
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (FreeBSD)

iQEcBAEBAgAGBQJTB92PAAoJEHyflib82/FGt1kH/j+xmZzvuisHwqhV/iyWwqTv
J5P4pYUp+yFcg6B4riBcpxlmZ5ZG2KCSK5NJZVZXX0p6UWW1MLeZc8siZPaCPdg8
I3DtkIQeZEjoFxtcP96K2IzDZBDzw5d8Kh4kZeFXXSJKX6LIW4XJVmGdhgoBN5Cd
ExIcOS+J3dY9s3QCeb9lpHsx6BWW6ziIVcALRmYI/opbTGbSW7pvbd+BX8WP2TZs
BH+SCLNkciLfNnFhm+nbZ+r3nIRB7/G+zlFTPzFYgQhATgGA8KRR1G6HPF0Zlcmm
LNssZSUGyJmM0ZA2TPbQyd/bq9kYzKcPL2k8zVvMdqk2Rp1AuPMF0inj4OmR9eM=
=Sv2D
-----END PGP SIGNATURE-----