From owner-cvs-src-old@FreeBSD.ORG Sat Oct 9 02:50:50 2010 Return-Path: Delivered-To: cvs-src-old@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2F0861065672 for ; Sat, 9 Oct 2010 02:50:50 +0000 (UTC) (envelope-from davidxu@FreeBSD.org) Received: from repoman.freebsd.org (repoman.freebsd.org [IPv6:2001:4f8:fff6::29]) by mx1.freebsd.org (Postfix) with ESMTP id 1ADAB8FC2B for ; Sat, 9 Oct 2010 02:50:50 +0000 (UTC) Received: from repoman.freebsd.org (localhost [127.0.0.1]) by repoman.freebsd.org (8.14.4/8.14.4) with ESMTP id o992onuO073319 for ; Sat, 9 Oct 2010 02:50:50 GMT (envelope-from davidxu@repoman.freebsd.org) Received: (from svn2cvs@localhost) by repoman.freebsd.org (8.14.4/8.14.4/Submit) id o992onqh073318 for cvs-src-old@freebsd.org; Sat, 9 Oct 2010 02:50:49 GMT (envelope-from davidxu@repoman.freebsd.org) Message-Id: <201010090250.o992onqh073318@repoman.freebsd.org> X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to davidxu@repoman.freebsd.org using -f From: David Xu Date: Sat, 9 Oct 2010 02:50:23 +0000 (UTC) To: cvs-src-old@freebsd.org X-FreeBSD-CVS-Branch: HEAD Subject: cvs commit: src/sys/kern init_main.c kern_exit.c kern_fork.c kern_kthread.c kern_resource.c kern_sig.c kern_thr.c kern_thread.c kern_time.c kern_umtx.c sys_process.c uipc_mqueue.c vfs_aio.c src/sys/sys proc.h signalvar.h X-BeenThere: cvs-src-old@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: **OBSOLETE** CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 09 Oct 2010 02:50:50 -0000 davidxu 2010-10-09 02:50:23 UTC FreeBSD src repository Modified files: sys/kern init_main.c kern_exit.c kern_fork.c kern_kthread.c kern_resource.c kern_sig.c kern_thr.c kern_thread.c kern_time.c kern_umtx.c sys_process.c uipc_mqueue.c vfs_aio.c sys/sys proc.h signalvar.h Log: SVN rev 213642 on 2010-10-09 02:50:23Z by davidxu Create a global thread hash table to speed up thread lookup, use rwlock to protect the table. In old code, thread lookup is done with process lock held, to find a thread, kernel has to iterate through process and thread list, this is quite inefficient. With this change, test shows in extreme case performance is dramatically improved. Earlier patch was reviewed by: jhb, julian Revision Changes Path 1.315 +1 -0 src/sys/kern/init_main.c 1.336 +2 -0 src/sys/kern/kern_exit.c 1.313 +1 -1 src/sys/kern/kern_fork.c 1.56 +3 -0 src/sys/kern/kern_kthread.c 1.203 +13 -23 src/sys/kern/kern_resource.c 1.400 +11 -17 src/sys/kern/kern_sig.c 1.85 +61 -66 src/sys/kern/kern_thr.c 1.295 +70 -1 src/sys/kern/kern_thread.c 1.149 +11 -17 src/sys/kern/kern_time.c 1.87 +3 -8 src/sys/kern/kern_umtx.c 1.170 +3 -14 src/sys/kern/sys_process.c 1.48 +11 -3 src/sys/kern/uipc_mqueue.c 1.247 +8 -4 src/sys/kern/vfs_aio.c 1.558 +8 -0 src/sys/sys/proc.h 1.92 +10 -1 src/sys/sys/signalvar.h