Date: Tue, 21 Sep 1999 22:20:33 +0200 From: Dirk Froemberg <dirk@FreeBSD.org> To: "Ronald F. Guilmette" <rfg@monkeys.com> Cc: ports@FreeBSD.org, questions@FreeBSD.org Subject: Re: mysql-server-3.22.25 install botch (pthread_attr_setschedparam?) Message-ID: <19990921222033.A96951@physik.TU-Berlin.DE> In-Reply-To: <27137.937789692@monkeys.com>; from Ronald F. Guilmette on Sun, Sep 19, 1999 at 06:08:12PM -0700 References: <19990919230055.E42360@physik.TU-Berlin.DE> <27137.937789692@monkeys.com>
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Hi Ronald! On Sun, Sep 19, 1999 at 06:08:12PM -0700, Ronald F. Guilmette wrote: > In message <19990919230055.E42360@physik.TU-Berlin.DE>, you wrote: > [...] > OK, so question number one is: Did the `pthread_attr_setschedparam' standard > thread function get added into libc_r yet? Is it there in FreeBSD 3.3? Yes, it was added somewhen between 3.1 and 3.2-RELEASE. > Second question: Does FreeBSD 3.3 have _all_ of the POSIX thread functions > in libc_r? If not, when will the thread support be completed? I don't know exactly. It seems to be fairly complete, now. deischen@FreeBSD.org is working in this area. He's the one to talk to. > Last but not least, the mySQL docs say that mySQL can in fact make use of > several processors at a time (assuming one has a multiprocessor system to > run it on) *if* the underlying OS has real, good, and proper support for > threads (and, one must assume, if it also has good support for multi- > processor systems). > > OK, so my question is simple: Is the thread support stuff in FreeBSD > really complete, in the sense of having proper support all fo the way > down to the kernel level, or are FreeBSD threads just being implemented > at the library level, with no special involvement on the part of the > kernel? FreeBSD threads are "just" user-level threads. > I hope that it is apparent what I am really asking here. If I run mySQL > on a multiprocessor system that is running FreeBSD, will it actually be > able to make use of more than one processor at a time on that system? > Does the FreeBSD kernel provide adequate support for this? Yes, definitly. FreeBSD-SMP scales very well (see http://www.freebsd.org/~fsmp/SMP/akgraph-a/graph1.html for details). And yes, MySQL will benefit from more than one processor. That's what threads support is for. 8-) Regards Dirk -- Dirk Froemberg To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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