Date: Sun, 8 Oct 2006 18:59:01 +0100 From: Ceri Davies <ceri@submonkey.net> To: "O. Hartmann" <ohartman@mail.uni-mainz.de> Cc: maho@FreeBSD.org, freebsd-bugs@FreeBSD.org, freebsd-amd64@FreeBSD.org Subject: Re: kern/85820: 1.5 times slower performance with SCHED_ULE than SCHED_4BSD Message-ID: <20061008175901.GW21333@submonkey.net> In-Reply-To: <45293AAD.9090205@mail.uni-mainz.de> References: <200610081720.k98HKkQx058984@freefall.freebsd.org> <45293AAD.9090205@mail.uni-mainz.de>
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--su+CkryO4QJrkqP3 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Oct 08, 2006 at 07:51:41PM +0200, O. Hartmann wrote: > Ceri Davies wrote: > > Synopsis: 1.5 times slower performance with SCHED_ULE than SCHED_4BSD > > > > State-Changed-From-To: open->closed > > State-Changed-By: ceri > > State-Changed-When: Sun Oct 8 17:19:36 UTC 2006 > > State-Changed-Why:=20 > > ULE is no longer the default scheduler, and no longer has a maintainer. > > This is an interesting test case though. > > > > > > Responsible-Changed-From-To: freebsd-amd64->freebsd-bugs > > Responsible-Changed-By: ceri > > Responsible-Changed-When: Sun Oct 8 17:19:36 UTC 2006 > > Responsible-Changed-Why:=20 > > Scheduler problem. > > > > http://www.freebsd.org/cgi/query-pr.cgi?pr=3D85820 > > _______________________________________________ > > freebsd-amd64@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-amd64 > > To unsubscribe, send any mail to "freebsd-amd64-unsubscribe@freebsd.org" > > =20 > Very interesting to read. And this is now the end of the newly > introduced allround weapon for more scalability? There is some one working on SCHED_ULE, but they are not a committer and they suggested that this PR could be closed. It contains an interesting test case but no real problem as such, only that one scheduler is slower that the other for certain loads. That is always going to be true. Ceri --=20 That must be wonderful! I don't understand it at all. -- Moliere --su+CkryO4QJrkqP3 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFKTxlocfcwTS3JF8RApnrAKC+eJAQRg7/bj0ZRmstY9usXPqS9gCgiqt4 8FtuLC7jNeJsYUkNytR2py8= =dfZK -----END PGP SIGNATURE----- --su+CkryO4QJrkqP3--
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