From owner-freebsd-doc@FreeBSD.ORG Tue Apr 8 05:30:09 2003 Return-Path: Delivered-To: freebsd-doc@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CD53937B401 for ; Tue, 8 Apr 2003 05:30:09 -0700 (PDT) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id D30F643FBD for ; Tue, 8 Apr 2003 05:30:08 -0700 (PDT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.12.9/8.12.9) with ESMTP id h38CU8Up052952 for ; Tue, 8 Apr 2003 05:30:08 -0700 (PDT) (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.12.9/8.12.9/Submit) id h38CU8Pf052951; Tue, 8 Apr 2003 05:30:08 -0700 (PDT) Resent-Date: Tue, 8 Apr 2003 05:30:08 -0700 (PDT) Resent-Message-Id: <200304081230.h38CU8Pf052951@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-doc@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, "Sergey A.Osokin" Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 959E037B401 for ; Tue, 8 Apr 2003 05:25:42 -0700 (PDT) Received: from freebsd.org.ru (freebsd.org.ru [194.84.67.5]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0AD0243FAF for ; Tue, 8 Apr 2003 05:25:42 -0700 (PDT) (envelope-from osa@freebsd.org.ru) Received: by freebsd.org.ru (Postfix, from userid 1000) id CF4CE6B; Tue, 8 Apr 2003 16:25:39 +0400 (MSD) Message-Id: <20030408122539.CF4CE6B@freebsd.org.ru> Date: Tue, 8 Apr 2003 16:25:39 +0400 (MSD) From: "Sergey A.Osokin" To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Subject: docs/50720: [PATCH] doc/en_US.ISO8859-1/books/faq/book.sgml: add QAs (scheduler) X-BeenThere: freebsd-doc@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: "Sergey A.Osokin" List-Id: Documentation project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Apr 2003 12:30:10 -0000 >Number: 50720 >Category: docs >Synopsis: [PATCH] doc/en_US.ISO8859-1/books/faq/book.sgml: add QAs (scheduler) >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-doc >State: open >Quarter: >Keywords: >Date-Required: >Class: update >Submitter-Id: current-users >Arrival-Date: Tue Apr 08 05:30:08 PDT 2003 >Closed-Date: >Last-Modified: >Originator: Sergey A. Osokin >Release: FreeBSD 5.0-CURRENT i386 >Organization: n/a >Environment: System: FreeBSD 5.0-CURRENT i386 >Description: doc/en_US.ISO8859-1/books/faq/book.sgml: add QAs (scheduler) Obtained from -current@ (des@ answers) >How-To-Repeat: >Fix: Index: doc/en_US.ISO8859-1/books/faq/book.sgml =================================================================== RCS file: /home/ncvs/doc/en_US.ISO8859-1/books/faq/book.sgml,v retrieving revision 1.526 diff -u -r1.526 book.sgml --- doc/en_US.ISO8859-1/books/faq/book.sgml 7 Apr 2003 18:37:59 -0000 1.526 +++ doc/en_US.ISO8859-1/books/faq/book.sgml 8 Apr 2003 11:58:22 -0000 @@ -5355,6 +5355,37 @@ + + + + How can I verify which scheduler is in use on a running system? + + + + Just type: + &prompt.root; sysctl kern.quantum + If you see + unknown oid 'kern.quantum' + it means that you use new SCHED_ULE scheduler, but + if you see + kern.quantum: 100000 + that means your system runs under old SCHED_4BSD scheduler. + + + + + + + What does it mean 'kern.quantum'? + + + + It is the maximum number of ticks a process can run without being + preempted. It is specific to the 4BSD scheduler, so you can use it + presence or absence to determine which scheduler is in use. + + + >Release-Note: >Audit-Trail: >Unformatted: