From owner-freebsd-bugs@FreeBSD.ORG Fri Aug 30 07:00:01 2013 Return-Path: Delivered-To: freebsd-bugs@smarthost.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id A9844F0D for ; Fri, 30 Aug 2013 07:00:01 +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 97C202AE2 for ; Fri, 30 Aug 2013 07:00:01 +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 r7U701Aq047990 for ; Fri, 30 Aug 2013 07:00:01 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.7/8.14.7/Submit) id r7U701JL047989; Fri, 30 Aug 2013 07:00:01 GMT (envelope-from gnats) Date: Fri, 30 Aug 2013 07:00:01 GMT Message-Id: <201308300700.r7U701JL047989@freefall.freebsd.org> To: freebsd-bugs@FreeBSD.org Cc: From: Mike Harding Subject: Re: 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 Reply-To: Mike Harding List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Aug 2013 07:00:01 -0000 The following reply was made to PR kern/181632; it has been noted by GNATS. From: Mike Harding To: bug-followup@FreeBSD.org, Mike Harding Cc: Subject: Re: kern/181632: 9.2-RC3 - on resume from suspend, disk operations are slower Date: Thu, 29 Aug 2013 23:51:18 -0700 --001a11c2b5b250530004e524a680 Content-Type: text/plain; charset=ISO-8859-1 I was able to track this down by building kernels against /base/stable/9 (it took -hours!-). The issue does occur with commit 244616, but does not occur with 244614. The only difference is a small patch to /usr/src/sys/dev/acpica/acpi_cpu.c - this code appears to do with c-state processing. --001a11c2b5b250530004e524a680 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
I was able to track this down by building k= ernels against /base/stable/9 (it took
-hours!-).

The issue does occur with commit 244616, but does not occur wi= th 244614.=A0 The
only difference is a small patch to /usr/src/sys/dev/acpica/acpi_cpu.c - th= is
code appears to do with c-state processing.

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