Date: Wed, 7 Nov 2007 08:47:30 -0800 From: "Doug Clements" <dclements@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: Best way to measure disk bandwidth usage Message-ID: <54da514e0711070847r2f4f1698w9ed28ca7c5d21f73@mail.gmail.com> In-Reply-To: <4731E6BC.6050703@netfence.it> References: <4731E6BC.6050703@netfence.it>
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On 11/7/07, Andrea Venturoli <ml@netfence.it> wrote: > > Hello. > I've got a couple of servers which I'd like to keep an eye on in order > to check wether their storage subsection is providing enough throughput > or wether disk i/o is their bottleneck. > > I know how to check this wrt cpu usage, memory size, network throughput, > but I'm totally lost when it comes to disk i/o. > I can run top and press 'm': this will allow me to know which processes > are using disk the most, but not wether I'm exploiting the hardware to > the limit or just to a small fraction of what it can do. gstat, iostat, and systat -vm are the tools I use for this. --Doug
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