Date: Fri, 23 Jun 2006 10:09:17 +0100 From: Alex Zbyslaw <xfb52@dial.pipex.com> To: Matt Ruzicka <matt@frii.com> Cc: freebsd-questions@freebsd.org Subject: Re: Tracking if disk is busy Message-ID: <449BAFBD.1070305@dial.pipex.com> In-Reply-To: <Pine.BSF.4.64.0606221603390.59395@elara.frii.com> References: <Pine.BSF.4.64.0606221603390.59395@elara.frii.com>
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Matt Ruzicka wrote: > We've got a couple servers that appear to have particularly busy disks > and I was trying to determine if there is a way to more easily poll > this data for tracking. > > I'm not sure if this is one of those can't see the forest for the > trees issues or not, but the only means that I am familiar with to see > the percentage of time the disk is busy is to run 'systat -vmstat'. I > was hoping for something more concise that I could run periodically > and maybe even graph (realizing that watching this might well distort > the results). > > It appears that iostat on Solaris gives this information, but I can't > seem to mimic this functionality with FreeBSD. > > Are there other ways in FreeBSD to pull the percentage of time the > disk is busy? You can use plain old vmstat to see blocks being transferred. --Alex
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