From owner-svn-src-head@FreeBSD.ORG  Sun Sep  6 19:33:13 2009
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 998151065672;
	Sun,  6 Sep 2009 19:33:13 +0000 (UTC) (envelope-from mav@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 88C2A8FC23;
	Sun,  6 Sep 2009 19:33:13 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id n86JXDYr092580;
	Sun, 6 Sep 2009 19:33:13 GMT (envelope-from mav@svn.freebsd.org)
Received: (from mav@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id n86JXD97092578;
	Sun, 6 Sep 2009 19:33:13 GMT (envelope-from mav@svn.freebsd.org)
Message-Id: <200909061933.n86JXD97092578@svn.freebsd.org>
From: Alexander Motin <mav@FreeBSD.org>
Date: Sun, 6 Sep 2009 19:33:13 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-head@freebsd.org
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r196904 - head/sys/geom
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
	<svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 06 Sep 2009 19:33:13 -0000

Author: mav
Date: Sun Sep  6 19:33:13 2009
New Revision: 196904
URL: http://svn.freebsd.org/changeset/base/196904

Log:
  MFp4:
  Remove msleep() timeout from g_io_schedule_up/down(). It works fine
  without it, saving few percents of CPU on high request rates without
  need to rearm callout twice per request.

Modified:
  head/sys/geom/geom_io.c

Modified: head/sys/geom/geom_io.c
==============================================================================
--- head/sys/geom/geom_io.c	Sun Sep  6 19:06:50 2009	(r196903)
+++ head/sys/geom/geom_io.c	Sun Sep  6 19:33:13 2009	(r196904)
@@ -567,7 +567,7 @@ g_io_schedule_down(struct thread *tp __u
 		if (bp == NULL) {
 			CTR0(KTR_GEOM, "g_down going to sleep");
 			msleep(&g_wait_down, &g_bio_run_down.bio_queue_lock,
-			    PRIBIO | PDROP, "-", hz/10);
+			    PRIBIO | PDROP, "-", 0);
 			continue;
 		}
 		CTR0(KTR_GEOM, "g_down has work to do");
@@ -672,7 +672,7 @@ g_io_schedule_up(struct thread *tp __unu
 		}
 		CTR0(KTR_GEOM, "g_up going to sleep");
 		msleep(&g_wait_up, &g_bio_run_up.bio_queue_lock,
-		    PRIBIO | PDROP, "-", hz/10);
+		    PRIBIO | PDROP, "-", 0);
 	}
 }