From owner-freebsd-stable@FreeBSD.ORG  Wed Oct 14 11:25:33 2009
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 2225710656C5;
	Wed, 14 Oct 2009 11:25:33 +0000 (UTC)
	(envelope-from kris@FreeBSD.org)
Received: from kennaway-macbookpro.config (freefall.freebsd.org
	[IPv6:2001:4f8:fff6::28])
	by mx1.freebsd.org (Postfix) with ESMTP id 4637F8FC1D;
	Wed, 14 Oct 2009 11:25:32 +0000 (UTC)
Message-ID: <4AD5B536.5030507@FreeBSD.org>
Date: Wed, 14 Oct 2009 12:25:42 +0100
From: Kris Kennaway <kris@FreeBSD.org>
User-Agent: Thunderbird 2.0.0.23 (Macintosh/20090812)
MIME-Version: 1.0
To: Ivan Voras <ivoras@freebsd.org>
References: <E316139E-FFCF-432F-8DCE-62B120C38E55@exscape.org>
	<CC16B639-7A75-4016-A8A8-5C59E9CD5E95@exscape.org>	<hb1qs0$qjd$1@ger.gmane.org>
	<alpine.BSF.2.00.0910131406340.26071@fledge.watson.org>	<9bbcef730910130633w150571a0k461fb4e67a51fb1d@mail.gmail.com>
	<B5BA3ACC-BC06-4042-8434-0D9395A0F478@freebsd.org>	<hb23i7$opq$1@ger.gmane.org>
	<alpine.BSF.2.00.0910130957540.26159@thebighonker.lerctr.org>
	<9bbcef730910131057i71db846et1f0d4aeadef5e302@mail.gmail.com>
In-Reply-To: <9bbcef730910131057i71db846et1f0d4aeadef5e302@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Cc: freebsd-stable@freebsd.org
Subject: Re: Extreme console latency during disk IO (8.0-RC1,
 previous 	releases also affected according to others)
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 14 Oct 2009 11:25:33 -0000

Ivan Voras wrote:
> 2009/10/13 Larry Rosenman <ler@lerctr.org>:
> 
>>>>> note huge packet loss. It looks like it's VM fault or something like it.
>>>> It sounds like the VM is failing to execute the guest during certain
>>>> types of I/O. A bit of scheduler tracing in the host OS probably wouldn't go
>>>> amiss to confirm that the VM really is suspending the guest
>>> It's VMWare ESXi underneath, which is *Officially Not Linux* though some
>>> ducks may disagree - anyway, I suspect tracing the host in this way is next
>>> to impossible without some kind of diamondium-level contract.
>>>
>> What information do you need?  I have a platinum VMWare contract.
>>
>> What version of ESXi?
> 
> Hi,
> 
> It is ESXi 3.5 - but if the problem is really in ESXi I presume anyone
> could reproduce it. My setup is nothing special - Xeon 5405, 8 GB RAM,
> SATA drives on ICH9.

I recall others having various weird problems in 3.5 that went away when 
they upgraded to 4.0.

Kris