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Date:      Mon, 7 Mar 2005 23:59:25 -0800
From:      pete wright <nomadlogic@gmail.com>
To:        cyb <"cyb."@gmx.net>
Cc:        questions@freebsd.org
Subject:   Re: FreeBSD 5.3 freezes under heavy hdd load
Message-ID:  <57d7100005030723594ec3080e@mail.gmail.com>
In-Reply-To: <1110266912.551.2.camel@p4-3200.local>
References:  <1110266912.551.2.camel@p4-3200.local>

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On Tue, 08 Mar 2005 08:28:32 +0100, cyb <"cyb."@gmx.net> wrote:
> Hello,
> 
>  from time to time my FreeBSD freezes under heavy hdd load and only a
> hard reset will bring it back to life with fsck complaining about
> 'Softupdate Inconsistencies'.
> 
> I had this behaviour on 5.3-RELEASE, 5.3-RELEASE-p5 and now i have it on
> 5.4-PRERELEASE. I am using a custom kernel with SMP enabled on a P4
> 3.2GHz for hyperthreading. One hdd is a SATA drive and it acts fine. The
> other hdd however is an ATA133 drive and i suspect it to be the problem,
> since freezes only occur when it is busy (eg. copying much data from a
> DVD/HDD to it or compiling a port). Whenever the system freezes there is
> no warning or log entry at all.
> 
> I used 'smartmontools' to check the drive, but there was not found
> anything and the hdd appeared to be fully operational.
> 
> I have 1GB (2x512MB PC3200) in the box and memtest86 was ok too.
> 
> Could the freezes come from a faulty IDE hdd (which would mean that I
> better get rid of it), or are there other possiblities.
> 

A couple of things will be neccessary to help us help you.  Custum
kernel, post or link to your KERNEL_CONFIG, or better yet a dmesg. 
Also I'd suggest testing this first w/o SMP enabled (not sure if SMP
is even that helpfull with hyper-threading IMO) and secondly test with
AICP disabled as well.  I may even go as far as running the system w/o
SMP and hyper threading enabled for testing purposes.  Doing this will
help limit the variables at play here, and is generally considered
good debugging practice.  Finally, I would post any debugging or error
messages your are getting in your logs as well.

-pete


-- 
~~o0OO0o~~
Pete Wright
www.nycbug.org
NYC's *BSD User Group



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