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To: Steve Kargl <sgk@troutmask.apl.washington.edu>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Wed, 06 Jul 2011 10:01:32 MST."
	<20110706170132.GA68775@troutmask.apl.washington.edu> 
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Date: Wed, 06 Jul 2011 17:05:41 +0000
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Cc: FreeBSD Current <freebsd-current@freebsd.org>, "Hartmann,
	O." <ohartman@zedat.fu-berlin.de>,
	arrowdodger <6yearold@gmail.com>, freebsd-questions@freebsd.org
Subject: Re: Heavy I/O blocks FreeBSD box for several seconds 
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In message <20110706170132.GA68775@troutmask.apl.washington.edu>, Steve Kargl w
rites:

>I periodically ran the same type test in the 2008 post over the
>last three years.  Nothing has changed.  I even set up an account
>on one node in my cluster for jeffr to use.  He was too busy to
>investigate at that time.

Isn't this just the lemming-syncer hurling every dirty block over
the cliff at the same time ?

To find out:  Run gstat and keep and eye on the leftmost column

The road map for fixing that has been known for years...

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.