Date: Sat, 20 Feb 2010 22:34:20 +0300 From: Boris Samorodov <bsam@ipt.ru> To: freebsd-questions@FreeBSD.org Subject: strange disk activity Message-ID: <97752307@ipt.ru>
next in thread | raw e-mail | index | archive | help
Hello List,
I've got a very strange disk activity:
-----
% iostat -xw60 da0
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 43.2 204.4 971.9 10917.2 0 30.7 30
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 5.1 274.6 72.7 15206.2 0 50.4 27
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 8.1 271.1 117.0 14827.8 0 51.1 29
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 9.9 304.6 184.5 16814.7 31 64.6 33
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 6.6 276.1 134.1 15184.1 0 36.6 29
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 13.3 336.9 268.5 19073.2 0 36.4 36
^C
% iostat -xw1 da0
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 43.0 204.7 968.6 10937.5 0 30.7 30
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 6.0 2.0 239.8 32.0 0 3.0 2
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 3.0 55.9 65.9 895.1 0 3.8 18
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 29.0 286.7 1212.8 18221.8 0 39.7 42
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 5.0 309.7 223.8 18589.3 1 0.6 6
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 0.0 21.0 0.0 335.7 0 8.0 17
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 0.0 286.7 0.0 18221.5 0 0.7 4
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 5.0 571.4 77.9 36412.2 0 1.3 22
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 4.0 446.6 28.0 28419.4 32 0.8 16
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 32.0 1005.0 411.6 26757.6 68 37.8 91
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 25.0 189.8 879.1 11972.2 1 266.8 103
extended device statistics
device r/s w/s kr/s kw/s wait svc_t b
da0 5.0 5.0 79.9 175.8 0 11.5 11
^C
-----
If I'm not mistaken it's approx. 15Mb/sec. Which means more
than 1000 Tb a day!
How can I find which program is trashing the disk? The system is
FreeBSD-7.0 with 15 jails. Thanks for your help.
--
WBR, Boris Samorodov (bsam)
Research Engineer, http://www.ipt.ru Telephone & Internet SP
FreeBSD Committer, http://www.FreeBSD.org The Power To Serve
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?97752307>