Date: Thu, 15 Oct 2009 10:44:52 -0700 From: Janet Sullivan <netgeek@bgp4.net> To: Steven Hartland <killing@multiplay.co.uk> Cc: freebsd-stable <freebsd-stable@freebsd.org>, Thomas Backman <serenity@exscape.org> Subject: Re: Extreme console latency during disk IO (8.0-RC1, previous releases also affected according to others) Message-ID: <4AD75F94.20000@bgp4.net> In-Reply-To: <43727653B60248EEA363AA3A886DC42C@multiplay.co.uk> References: <E316139E-FFCF-432F-8DCE-62B120C38E55@exscape.org> <CC16B639-7A75-4016-A8A8-5C59E9CD5E95@exscape.org> <43727653B60248EEA363AA3A886DC42C@multiplay.co.uk>
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Steven Hartland wrote: > We're not running 8 yet but we do have a 7.x box which its under fairly > high IO load doing mrtg graphs which has similar behaviour. When typing > a command on ssh it will freeze for may seconds. We have a FreeBSD 7.2 cacti box running on a dell 1950 that has the same problems. RRDs are disk i/o hogs, and when disk i/o shoots up, the box becomes non-responsive for a few seconds.
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