[mrtg] Re: options help

[Jerry Heidtke]

If you want to display the absolute number of errors at each polling
interval since the counters were reset, the gauge option is what you
want.

If you want to graph the differences between the current and previous
value, multiply the target by the number of seconds between polling
periods (300 in most cases). Because of "jitter" in the polling periods,
this won't be completely accurate in any one period, but will be very
accurate over longer periods of time. Mrtg will then retrieve the
current value, subtract the previous value, multiply by 300, divide by
the number of seconds since the previous poll (~300), and round to the
nearest integer (or does it truncate fractional values?).

Jerry

-----Original Message-----
From: Pete Templin [mailto:pete.templin at texlink.com] 
Sent: Wednesday, May 21, 2003 2:14 PM
To: Brander, Eric; mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: options help


According to the documentation, "In the absence of 'gauge' or 'absolute'
options, MRTG treats variables as a [sic] counters and calculates the
difference between the current and the previous value and divides that
by the elapsed time between the last two readings to get the value to be
plotted."  Therefore, the gauge option WILL cause MRTG to divide by the
elapsed time, which is not what I want.

Or am I simply mistaken?

Pete Templin
IP Network Engineer
Tex-Link Communications
pete.templin at texlink.com
(210) 892-4183

-----Original Message-----
From: Brander, Eric [mailto:Eric.Brander at ACS-INC.com]
Sent: Wednesday, May 21, 2003 2:11 PM
To: mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: options help

The gauge option is exactly what you need.

Eric Brander
ACS
Texas CHIP Account
Sr. Communications Engineer - Information Systems Department
512.336.3331
Eric dot Brander at acs-inc dot com


-----Original Message-----
From: Pete Templin [mailto:pete.templin at texlink.com]
Sent: Wednesday, May 21, 2003 10:46 AM
To: mrtg at list.ee.ethz.ch
Subject: [mrtg] options help


What are the correct options for a counter that doesn't reset after you
check it (i.e. MRTG will need to subtract the previous reading) AND
should
be displayed as the number of events that occurred (i.e. MRTG should not
divide by the number of seconds that have occurred since the last poll).
Unless I'm sorely mistaken, neither gauge nor absolute applies here.

I'm trying to graph the number of InErrors and OutErrors on an
interface,
and be able to display the number of errors, not the error rate per
second.

Thanks,

Pete Templin
IP Network Engineer
Tex-Link Communications
pete.templin at texlink.com
(210) 892-4183

--
Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe
Archive     http://www.ee.ethz.ch/~slist/mrtg
FAQ         http://faq.mrtg.org    Homepage     http://www.mrtg.org
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi

--
Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe
Archive     http://www.ee.ethz.ch/~slist/mrtg
FAQ         http://faq.mrtg.org    Homepage     http://www.mrtg.org
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi

--
Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe
Archive     http://www.ee.ethz.ch/~slist/mrtg
FAQ         http://faq.mrtg.org    Homepage     http://www.mrtg.org
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi


Confidentiality Notice: This e-mail message, including any attachments,
is for the sole use of the intended recipient(s) and may contain
confidential and privileged information.  Any unauthorized review, use,
disclosure or distribution is prohibited.  If you are not the intended
recipient, please contact the sender by reply e-mail and destroy all
copies of the original message.

--
Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe
Archive     http://www.ee.ethz.ch/~slist/mrtg
FAQ         http://faq.mrtg.org    Homepage     http://www.mrtg.org
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi