[rrd-users] Fwd: start time
Hello,
I'm sorry to bother you again, I tried what you sent me. It gives me the
following result:
period=300
time=3600
end=`date +%s` gives => end=1309521104
end=$(( ( ${end} / ${period} ) * ${period} )) => after this operations
it gives end=1309520880
time=$(( ( ${time} / ${period} ) * ${period} ))=> time don't change
after operations time=3600
start=$(( ${end} - ${time} ))=> this operations gives the value of
start start=1309517280
it shows ok, but when i run rrdtool fetch it does not accept the value 3600
rrdtool fetch $rrd AVERAGE -r $period -s $time => ERROR: start time: did
you really mean month 3600?
thank you very much.
___
rrd-users mailing list
rrd-users@lists.oetiker.ch
https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
[rrd-users] Fwd: start time
Hello, I have another question : the time of the creation of the database must be less than the update time ERROR : illegal attempt to update using time 1309519420 when last update time is 1309520243 (minimum one second step) ___ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
Re: [rrd-users] Fwd: start time
Hello.
man rrdfetch says something about the format -s accepts:
"--start|-s start (default end-1day)
start of the time series. A time in seconds since epoch (1970-01-01) is
required.
Negative numbers are relative to the current time.
By default, one day worth of data will be fetched.
See also AT-STYLE TIME SPECIFICATION section for a detailed explanation on
ways to specify the start time."
So -s 3600 is not valid, except you are trying to access data from Thu Jan 1
01:00:00 UTC 1970
So you should use an unix timestamp (e.g. -s 1309512280) or use a negative
number
to specify a relative offset.
HTH,
Andreas Maus.
On 07/01/11 14:08, fadwa salam wrote:
> Hello,
>
> I'm sorry to bother you again, I tried what you sent me. It gives me the
> following result:
> period=300
> time=3600
>
> end=`date +%s` gives => end=1309521104
>
> end=$(( ( ${end} / ${period} ) * ${period} )) => after this operations it
> gives end=1309520880
>
> time=$(( ( ${time} / ${period} ) * ${period} ))=> time don't change after
> operations time=3600
>
> start=$(( ${end} - ${time} ))=> this operations gives the value of start
> start=1309517280
>
> it shows ok, but when i run rrdtool fetch it does not accept the value 3600
>
> rrdtool fetch $rrd AVERAGE -r $period -s $time => ERROR: start time: did
> you really mean month 3600?
>
> thank you very much.
>
>
>
>
> ___
> rrd-users mailing list
> rrd-users@lists.oetiker.ch
> https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
--
Dipl.-Ing. Andreas Maus science+computing ag
System Administration Hagellocher Weg 73
tel.: +49 7071 9457 671 72070 Tuebingen, Germany
fax: +49 7071 9457 411 www.science-computing.de
--
Vorstand/Board of Management:
Dr. Bernd Finkbeiner, Dr. Roland Niemeier,
Dr. Arno Steitz, Dr. Ingrid Zech
Vorsitzender des Aufsichtsrats/
Chairman of the Supervisory Board:
Philippe Miltin
Sitz/Registered Office: Tuebingen
Registergericht/Registration Court: Stuttgart
Registernummer/Commercial Register No.: HRB 382196
___
rrd-users mailing list
rrd-users@lists.oetiker.ch
https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
Re: [rrd-users] Fwd: start time
fadwa salam wrote:
>it shows ok, but when i run rrdtool fetch it does not accept the value 3600
>
>rrdtool fetch $rrd AVERAGE -r $period -s $time => ERROR: start
>time: did you really mean month 3600?
That's because you have given it the wrong start time ! 3600s is back
in January 1970. You want :
rrdtool fetch ${rrd} AVERAGE -r ${period} -s ${start} -e ${end}
BTW - as a general comment on coding standards, my preference is to
include the {} even when not needed. The main reason is that there
are several situation where they are needed, and it's easy to miss
them out when you should include them, leading to incorrect results.
Eg, suppose your program creates several temporary files, you might
do something like :
tmp_fil="/var/`something that generates a random name`"
> "$tmpone"
> "$tmptwo"
This will fail because the shell expands $tmpone and $tmptwo to empty
strings, giving the effective code :
>
>
Whereas using :
> "${tmp}one"
> "${tmp}two"
will work as shell expansion gives this :
> "/var/one"
> "/var/two"
Quotes are also a good idea, otherwise your code breaks when someone
uses a path containing a space, etc.
Just a couple of tips so you don't need to learn it the way most of us did ;-)
--
Simon Hobson
Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.
___
rrd-users mailing list
rrd-users@lists.oetiker.ch
https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
Re: [rrd-users] Fwd: start time
fadwa salam wrote: >the time of the creation of the database must be less than the >update time > > ERROR : illegal attempt to update using time 1309519420 when last >update time is 1309520243 (minimum one second step) Yes. -- Simon Hobson Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed author Gladys Hobson. Novels - poetry - short stories - ideal as Christmas stocking fillers. Some available as e-books. ___ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
