From owner-freebsd-hackers Sat Apr 25 12:20:35 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id MAA03043 for freebsd-hackers-outgoing; Sat, 25 Apr 1998 12:20:35 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from antipodes.cdrom.com (castles358.castles.com [208.214.167.58]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id MAA02980 for ; Sat, 25 Apr 1998 12:20:15 -0700 (PDT) (envelope-from mike@antipodes.cdrom.com) Received: from antipodes.cdrom.com (localhost [127.0.0.1]) by antipodes.cdrom.com (8.8.8/8.8.5) with ESMTP id MAA00591; Sat, 25 Apr 1998 12:16:35 -0700 (PDT) Message-Id: <199804251916.MAA00591@antipodes.cdrom.com> X-Mailer: exmh version 2.0zeta 7/24/97 To: "Jordan K. Hubbard" cc: "John S. Dyson" , toshok@Hungry.COM (Christoph Toshok), freebsd-hackers@FreeBSD.ORG Subject: Re: threads performance In-reply-to: Your message of "Sat, 25 Apr 1998 12:06:44 PDT." <3679.893531204@time.cdrom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sat, 25 Apr 1998 12:16:35 -0700 From: Mike Smith Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > > The issue of kernel threads is on my plate, I have been *ordered* > > I think he was still wanting to know (and I'm darn curious myself) > why our *user* threads are so slow in comparison to the user thread > packages on other platforms. I'm not saying kernel threads aren't > neat or needed, I'm just wondering what specific performance bogon > we're suffering from in userland which makes it so? As was pointed out at the SFBUG, at least one of the problems is the number of signal mask manipulation system calls that take place. Why this hurts so much be comparison to other platforms (which supposedly also do this) is another question entirely. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message