From owner-freebsd-bugs@FreeBSD.ORG  Sun Dec 12 12:19:23 2010
Return-Path: <owner-freebsd-bugs@FreeBSD.ORG>
Delivered-To: freebsd-bugs@FreeBSD.org
Received: by hub.freebsd.org (Postfix, from userid 1233)
	id 91C80106566B; Sun, 12 Dec 2010 12:19:23 +0000 (UTC)
Date: Sun, 12 Dec 2010 12:19:23 +0000
From: Alexander Best <arundel@freebsd.org>
To: Bruce Cran <bruce@cran.org.uk>
Message-ID: <20101212121923.GA61077@freebsd.org>
References: <201012121110.oBCBABjm057751@freefall.freebsd.org>
	<20101212111844.7510053e@core.draftnet>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20101212111844.7510053e@core.draftnet>
Cc: freebsd-bugs@FreeBSD.org
Subject: Re: kern/104624: Sound,
	mouse and keyboard badly interrupted while I/O (disk, net)
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Bug reports <freebsd-bugs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-bugs>
List-Post: <mailto:freebsd-bugs@freebsd.org>
List-Help: <mailto:freebsd-bugs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 12 Dec 2010 12:19:23 -0000

On Sun Dec 12 10, Bruce Cran wrote:
> On Sun, 12 Dec 2010 11:10:11 GMT
> Alexander Best <arundel@freebsd.org> wrote:
> 
> >  i can confirm that a similar issue exists for me running a very
> > recent HEAD snapshot on amd64. when the disk is performing heavy i/o
> > (make -j8 buildworld e.g.) sound starts stuttering and the system
> > goes semi-responsive. mostly the mouse input (usb) is lagging, but
> > sometimes the cursor freezes in it's current position for 10 seconds
> > or so. 
> 
> There was a discussion recently where we noticed this problem appeared
> to occur mostly on systems with Intel Core 2 Duo CPUs. I've seen a
> login paused for over 5 seconds (between typing the password and
> the motd being displayed) due to an "svn up" on my laptop for example.

bulls eye!

CPU: Intel(R) Pentium(R) Dual  CPU  E2160  @ 1.80GHz (2394.05-MHz K8-class CPU)
  Origin = "GenuineIntel"  Id = 0x6fd  Family = 6  Model = f  Stepping = 13
  Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,
CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
  Features2=0xe39d<SSE3,DTES64,MON,DS_CPL,EST,TM2,SSSE3,CX16,xTPR,PDCM>
  AMD Features=0x20100800<SYSCALL,NX,LM>
  AMD Features2=0x1<LAHF>
  TSC: P-state invariant

cheers.
alex

ps: was this a private discussion or a public one? i'd really like to read up
on this one.

> 
> -- 
> Bruce Cran

-- 
a13x