Date: Wed, 07 Nov 2007 18:41:11 +0100 From: Andrea Venturoli <ml@netfence.it> To: Doug Clements <dclements@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Best way to measure disk bandwidth usage Message-ID: <4731F8B7.9090003@netfence.it> In-Reply-To: <54da514e0711070847r2f4f1698w9ed28ca7c5d21f73@mail.gmail.com> References: <4731E6BC.6050703@netfence.it> <54da514e0711070847r2f4f1698w9ed28ca7c5d21f73@mail.gmail.com>
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Doug Clements ha scritto: > gstat, iostat, and systat -vm are the tools I use for this. Thanks for the fast answer. A couple more questions: gstat gives percentage values: what are these and how are they computed? In the man page I can find no answer. iostat is also expecially interesting, since it can run non-interactively and I could poll it through cacti... However this monitors only raw da devices. Is there a way to get gmirrors monitored? Finally this gives overall MB/s, which is very interesting, but I'd also need to refer this to an end-of-scale value, in order to understand if the disks are working to their fullest (and thus are the bottleneck). Is this correct? Where could I desume such a value? (I remember there was an utility... though I don't remember its name). bye & Thanks av.
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