Re: random_page_costs - are defaults of 4.0 realistic for SCSI RAID 1

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Greg Smith wrote:
> On Wed, 12 Sep 2007, Gregory Stark wrote:
>
>> Also, it helps to run a "vmstat 1" in another window and watch the bi
>> and bo
>> columns.
>
> Recently on Linux systems I've been using dstat (
> http://dag.wieers.com/home-made/dstat/ ) for live monitoring in this
> sort of situation. Once you get the command line parameters right, you
> can get data for each of the major disks on your system that keep the
> columns human readable (like switching from KB/s to MB/s as appropriate)
> as activity goes up and down combined with the standard vmstat data.
>
> I still use vmstat/iostat if I want to archive or parse the data, but if
> I'm watching it I always use dstat now.

Thanks for the tip Greg... I hadn't heard of dstat.

Sincerely,

Joshua D. Drake

>
> --
> * Greg Smith gsmith(at)gregsmith(dot)com http://www.gregsmith.com Baltimore, MD
>
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