Alex, Now I clearly understand the Data Source Type. I have modified the RRD database to fix the graph issue but still I have a spike in my graph. I will briefly explain what I did.
My data source definition is DS:ds1:DERIVE:600:0:U and it has the following value car.rrd 1100062670:12118790:325592037:1665197:15724083:102546716:1415811:2756520:11086662700:78789085:0:0:0 car.rrd 1100063257:3617:61997:681:3527:2522:14:82:380648:66261:0:0:0 Based on the above value graph has big spikes because it have negative value. But we don't want to see this spike since we used to reboot the server regularly and for each reboot this spike will be in graph. So we thought in order to avoid spike in the graph we introduce few UNKNOWN values in the RRD database as below. car.rrd 1100062670:12118790:325592037:1665197:15724083:102546716:1415811:2756520:11086662700:78789085:0:0:0 car.rrd 1100062860::::::::::0:0:0 car.rrd 1100062920::::::::::0:0:0 car.rrd 1100062980::::::::::0:0:0 car.rrd 1100063040::::::::::0:0:0 car.rrd 1100063100::::::::::0:0:0 car.rrd 1100063257:3617:61997:681:3527:2522:14:82:380648:66261:0:0:0 But still we can see the spike in the graph. Can you please let me know how RRD works on this. Thanks Saravanan Alex van den Bogaerdt <[EMAIL PROTECTED]> Sent by: [EMAIL PROTECTED] 23/11/2004 02:03 To [email protected] cc Subject [rrd-users] Re: RRD Graph On Mon, Nov 22, 2004 at 10:55:04AM -0500, Sunil Modi (IT) wrote: > DERIVE ABSOLUTE and COUNTER are reates of change. GAUGE will give the actual number. From your previuos post it seemed that you wanted to compare to previous values, but now it seems you just want the actual number. Use GAUGE for the actual number. All numbers in an RRA are rates. Derive, absolute, counter and gauge determine how to compute such a rate. GAUGE -> It already is a rate. Just copy the rate. COUNTER -> Look at the difference between last time and now ABSOLUTE -> A counter that starts from zero when you read it DERIVE -> A counter that can also go back GAUGE will NOT give you the actual number. Rates are still being normalized before they are stored as a PDP. This means the rate may be different from what you gave to RRDtool. GAUGE will NOT give you the actual number. A number of PDPs will be subject to consolidation before they are stored as a CDP. This means the rate in the RRA may be different from what you gave to RRDtool. GAUGE will NOT give you the actual number. Alex -- You want an answer? You'd better follow the following guidelines! Linesize well below 80 chars. Reply to the list, not to me. Trim irrelevant lines. Reply _below_ the relevant lines, not on top. -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi ------------------------------------------ This e-mail is confidential. If you are not the intended recipient, any use, disclosure or copying of this document is unauthorised and prohibited. If you have received this document in error, please delete the email and notify me by return email or by phoning the NEMMCO Helpdesk on 1300 300 295. -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
