[rrd-users] Re: how does rrdgraph pick which points to graph

Britt Houser houser at cisco.com
Thu Jul 10 21:47:35 MEST 2003

Even if I don't have the a RRA setup for the 30 min interval?  So it
does this calculation on the fly?  If so, is there a big performance hit
todo this?


On Thu, 2003-07-10 at 15:37, PAUL WILLIAMSON wrote:
> It picks the data points that are appropriate for the interval you
> request.
> If you want 5 minute values in your graph, but are asking for 2 weeks 
> worth of data (and don't have the right resolution), RRDTool will pick
> the 
> 30 minute values and display those.
> Paul
> >>> Britt Houser <houser at cisco.com> 07/10/03 03:32PM >>>
> Let say I have 1000 data points in my rrd, and I create the default
> graph which is 400 pixels wide.  How does rrd tool 'summarize' 1000
> data
> points into 400?  Is each point an average? or does it just pick out
> every 2.5 points and displays that one?  Something more complex?
> thx,
> britt
Britt Houser - Software Engineer
Cisco Systems, Inc
Phone:    (919) 392-6258
Email:    houser at cisco.com
A/N Page: bhouser at epage.cisco.com

Unsubscribe mailto:rrd-users-request at list.ee.ethz.ch?subject=unsubscribe
Help        mailto:rrd-users-request at list.ee.ethz.ch?subject=help
Archive     http://www.ee.ethz.ch/~slist/rrd-users
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi

More information about the rrd-users mailing list