Date: Mon, 19 Oct 2009 19:34:23 -0400 From: Carl Chave <carl@chave.us> To: Christopher Key <cjk32@cam.ac.uk> Cc: freebsd-questions@freebsd.org Subject: Re: ZFS: Strange performance issues Message-ID: <eaba3b490910191634u1e43bd0dkb49a4a96c8a9583f@mail.gmail.com> In-Reply-To: <4ADC5318.2010706@cam.ac.uk> References: <4ADC5318.2010706@cam.ac.uk>
next in thread | previous in thread | raw e-mail | index | archive | help
Chris, Don't know, but, I will paste in a portion of the ZFS admin guide from SUN: Because these statistics are cumulative since boot, bandwidth might appear low if the pool is relatively idle. You can request a more accurate view of current bandwidth usage by specifying an interval. For example: # zpool iostat tank 2 Later it says about the -v option: You can use the same set of options (interval and count) when examining virtual device statistics. http://dlc.sun.com/pdf/819-5461/819-5461.pdf Page 95
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?eaba3b490910191634u1e43bd0dkb49a4a96c8a9583f>