Date: Fri, 9 Sep 2011 01:40:04 GMT From: Ed Maste <emaste@freebsd.org> To: freebsd-bugs@FreeBSD.org Subject: Re: bin/30360: vmstat(8) returns impossible data Message-ID: <201109090140.p891e4ic083322@freefall.freebsd.org>
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The following reply was made to PR bin/30360; it has been noted by GNATS. From: Ed Maste <emaste@freebsd.org> To: <bug-followup@FreeBSD.org> Cc: Subject: Re: bin/30360: vmstat(8) returns impossible data Date: Thu, 8 Sep 2011 21:27:13 -0400 See also the thread at http://lists.freebsd.org/pipermail/freebsd-current/2010-October/020564.html A suggestion from one of the followups: > I'd be very happy if all vmstat and iostat would get a command line > switch to suppress the "summary since last reboot" line. > This information may be useful for some cases but in other cases, like > creating performance data for monitoring systems like Icinga / Nagios > one has to remove the first line(s) manually. Adding this mode would solve the problem for non-interactive use of vmstat (in that overflow doesn't matter for the delta between two samples), but will leave the bogus data in the normal case. Maybe -q (quiet) could suppress the header and another -q could suppress also the first line? So vmstat -qq -w 1 -c 2 would provide just the one delta summary line after one second. (For reference, spare flags on vmstat and iostat seem to be b e g j l q r u v y)
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