Date: Wed, 7 Nov 2007 10:04:38 -0800 From: Chuck Swiger <cswiger@mac.com> To: Andrea Venturoli <ml@netfence.it> Cc: Doug Clements <dclements@gmail.com>, freebsd-questions@freebsd.org Subject: Re: Best way to measure disk bandwidth usage Message-ID: <52BC6A0C-B7BD-4888-9D29-99189F8183F5@mac.com> In-Reply-To: <4731F8B7.9090003@netfence.it> References: <4731E6BC.6050703@netfence.it> <54da514e0711070847r2f4f1698w9ed28ca7c5d21f73@mail.gmail.com> <4731F8B7.9090003@netfence.it>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi-- On Nov 7, 2007, at 9:41 AM, Andrea Venturoli wrote: > 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? If they are visible as "drive devices", then yes, iostat can be passed a list of devices to monitor instead of the top-level physical devices it was showing by default. > 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). diskinfo -vt _device_ ...will give you some transfer rate numbers, but note the BUGS section of the manpage. :-) -- -Chuck
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?52BC6A0C-B7BD-4888-9D29-99189F8183F5>