From owner-freebsd-bugs@FreeBSD.ORG Thu Aug 29 01:40:00 2013 Return-Path: Delivered-To: freebsd-bugs@smarthost.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id DA4FFD1C for ; Thu, 29 Aug 2013 01:40:00 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:1900:2254:206c::16:87]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 9F27E2783 for ; Thu, 29 Aug 2013 01:40:00 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.7/8.14.7) with ESMTP id r7T1e0QY075585 for ; Thu, 29 Aug 2013 01:40:00 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.7/8.14.7/Submit) id r7T1e00b075584; Thu, 29 Aug 2013 01:40:00 GMT (envelope-from gnats) Resent-Date: Thu, 29 Aug 2013 01:40:00 GMT Resent-Message-Id: <201308290140.r7T1e00b075584@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Mike Harding Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 3304BC2C for ; Thu, 29 Aug 2013 01:34:43 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from oldred.freebsd.org (oldred.freebsd.org [8.8.178.121]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 208CC274F for ; Thu, 29 Aug 2013 01:34:43 +0000 (UTC) Received: from oldred.freebsd.org ([127.0.1.6]) by oldred.freebsd.org (8.14.5/8.14.7) with ESMTP id r7T1Ygvn011716 for ; Thu, 29 Aug 2013 01:34:42 GMT (envelope-from nobody@oldred.freebsd.org) Received: (from nobody@localhost) by oldred.freebsd.org (8.14.5/8.14.5/Submit) id r7T1Ygoo011713; Thu, 29 Aug 2013 01:34:42 GMT (envelope-from nobody) Message-Id: <201308290134.r7T1Ygoo011713@oldred.freebsd.org> Date: Thu, 29 Aug 2013 01:34:42 GMT From: Mike Harding To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Subject: kern/181632: 9.2-RC3 - on resume from suspend, disk operations are slower X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Aug 2013 01:40:00 -0000 >Number: 181632 >Category: kern >Synopsis: 9.2-RC3 - on resume from suspend, disk operations are slower >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Aug 29 01:40:00 UTC 2013 >Closed-Date: >Last-Modified: >Originator: Mike Harding >Release: 9.2-RC3 >Organization: >Environment: FreeBSD bsd.mvh 9.2-RC3 FreeBSD 9.2-RC3 #0 r254986: Wed Aug 28 09:05:42 PDT 2013 root@bsd.mvh:/usr/obj/usr/src/sys/GENERIC amd64 >Description: I've been using 'zzz' with a WOL for a while to keep my machine available, but not drawing a lot of power. I recently installed 9.2-RC3. It takes about 47 minutes to do a 'make -j9 buildworld buildkernel' on this machine, but if I do a suspend and resume, it takes much longer to do this same operation after the machine comes back up - for example, it took 1 hour 37 minutes to do the same buildkernel/buildworld after the resume from suspend. It looks like the 'rm' operations are happening especially slowly - there is not much disk or CPU activity going on when I see 'rm' on the terminal, vs. before the 'zzz', when the disk and/or CPU seem pretty busy most of the time during the build. I know that suspend/resume is a bit flaky, but it's been pretty reliable for me under 9.1. >How-To-Repeat: as root cd /usr/src rm -rf /usr/obj time make -j9 buildworld buildkernel zzz (wake up the box) (repeat the above) >Fix: >Release-Note: >Audit-Trail: >Unformatted: