Date: Wed, 30 Aug 2006 17:27:26 -0700 From: Skylar Thompson <skylar@cs.earlham.edu> To: Michal Mertl <mime@traveller.cz> Cc: backyard1454-bsd@yahoo.com, Jordi Carrillo <jordilin@gmail.com>, freebsd-questions@freebsd.org Subject: Re: SMP detection Message-ID: <44F62CEE.9040202@cs.earlham.edu> In-Reply-To: <1156982800.1017.37.camel@genius.i.cz> References: <94ff3700608301020l34251166nbdb4d72842e1bb86@mail.gmail.com> <20060830181240.65785.qmail@web83106.mail.mud.yahoo.com> <94ff3700608301302n13f9aabcs935fbe6403601d30@mail.gmail.com> <44F6036E.7050203@cs.earlham.edu> <1156982800.1017.37.camel@genius.i.cz>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig2ECE36925D056B72C1EA1CA0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Michal Mertl wrote: > No! Kernel threads (e.g. handling interrupts) aren't that much differen= t > to normal processes. > > Logical CPUs on a single HTT capable CPU share most of the CPU logic, > especially all the external stuff (handling interrupts). Scheduling > handling of interrupts on the "secondary/logical" core wouldn't > probably help performance at all (if that is at all possible). > =20 Could you clarify note 20031022 in /usr/src/UPDATING? It states that HTT CPUs are used for interrupts if they are detected, even if they aren't used by regular processes. Was this something that just showed up in pre-6.x releases? --=20 -- Skylar Thompson (skylar@cs.earlham.edu) -- http://www.cs.earlham.edu/~skylar/ --------------enig2ECE36925D056B72C1EA1CA0 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (SunOS) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFE9izwsc4yyULgN4YRAhQcAJ9VJyNxsenAS5coRBEzG/q3eBTNWACcD4F3 1JASoj4DRP8F1rsJoudB/Y0= =GQK8 -----END PGP SIGNATURE----- --------------enig2ECE36925D056B72C1EA1CA0--
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