Hi all, I just cvsup'ed to that latest -STABLE and saw that option HTT is no longer availible in LINT. Does anyone know why this is no longer supported? I searched the stable@ list but cant seem to find anything on this. Thank you. Jaco van Tonder Magic Developer :: Premsoft Development (Pty) Ltd Direct: +27 11 312 2122 :: Fax: +27 11 312 2122 :: Mobile: +27 83 417 5424 Email: jaco@premsoft.co.za :: Web: http://www.premsoft.co.za/
Jaco van Tonder
2003-Oct-28 13:56 UTC
[solved] [4.9-RC] What happened to ``options HTT'' ?
OK, my bad, I should read /usr/src/UPDATING. :) ----- Original Message ----- From: "Jaco van Tonder" <jacovt@cscrsa.com> To: <freebsd-stable@freebsd.org> Sent: 28/10/2003 11:42 PM Subject: [4.9-RC] What happened to ``options HTT'' ?> Hi all, > > I just cvsup'ed to that latest -STABLE and saw that option HTT is nolonger> availible in LINT. Does anyone know why this is no longer supported? I > searched the stable@ list but cant seem to find anything on this. > > Thank you. > Jaco van Tonder > Magic Developer :: Premsoft Development (Pty) Ltd > Direct: +27 11 312 2122 :: Fax: +27 11 312 2122 :: Mobile: +27 83 417 5424 > Email: jaco@premsoft.co.za :: Web: http://www.premsoft.co.za/ > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > >
On Tue, Oct 28, 2003 at 11:42:57PM +0200, Jaco van Tonder wrote:> I just cvsup'ed to that latest -STABLE and saw that option HTT is no longer > availible in LINT. Does anyone know why this is no longer supported? I > searched the stable@ list but cant seem to find anything on this.It is no longer necessicary as HTT logical CPUs are now activated by default. If you wish to use them, set the sysctl machdep.hlt_logical_cpus to 0. -- Brooks -- Any statement of the form "X is the one, true Y" is FALSE. PGP fingerprint 655D 519C 26A7 82E7 2529 9BF0 5D8E 8BE9 F238 1AD4 -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available Url : http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20031028/2aa0080a/attachment.bin
Hi, On Tue, Oct 28, 2003 at 11:42:57PM +0200, Jaco van Tonder wrote:> > I just cvsup'ed to that latest -STABLE and saw that option HTT is no longer > availible in LINT. Does anyone know why this is no longer supported? I > searched the stable@ list but cant seem to find anything on this. >from /usr/src/UPDATING 20031022: Support for HyperThread logical CPUs has now been enabled by default. As a result, the HTT kernel option no longer exists. ... Cheers Thorsten -- /* Thorsten Steentjes, Martin-Luther-Str. 8, 53919 Weilerswist, Germany */ /* Phone: +49 2254601458 | Fax: +49 2254601459 | Mobile: +49 1702105181 */ /* Please remember: rm -rf means "read mail -really fast" */ -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 187 bytes Desc: not available Url : http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20031028/9e8d3746/attachment.bin
On Tue, Oct 28, 2003 at 11:42:57PM +0200, Jaco van Tonder wrote:> Hi all, > > I just cvsup'ed to that latest -STABLE and saw that option HTT is no longer > availible in LINT. Does anyone know why this is no longer supported? I > searched the stable@ list but cant seem to find anything on this.Did you read /usr/src/UPDATING as you are supposed to do? The 20031022 entry should prove useful. -- <Insert your favourite quote here.> Erik Trulsson ertr1013@student.uu.se
Brooks Davis <brooks@one-eyed-alien.net> wrote:
> On Tue, Oct 28, 2003 at 11:42:57PM +0200, Jaco van Tonder wrote:
> > I just cvsup'ed to that latest -STABLE and saw that option HTT is
no longer
> > availible in LINT. Does anyone know why this is no longer supported?
I
> > searched the stable@ list but cant seem to find anything on this.
>
> It is no longer necessicary as HTT logical CPUs are now activated by
> default. If you wish to use them, set the sysctl
> machdep.hlt_logical_cpus to 0.
Can that sysctl be changed at runtime, or is it only possible
to do it in the loader? The UPDATING entry isn't completely
clear about that.
By the way, are there any "real world" experiences whether
it's worth it to use the logical CPUs, say, on a PostgreSQL
or Apache server, or with Java stuff (jakarta/tomcat etc.)?
Regards
Oliver
--
Oliver Fromme, secnetix GmbH & Co KG, Oettingenstr. 2, 80538 M?nchen
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