[rrd-users] fetch problem?

May be it has been discus before but I can not find any trace of it. I
also check all the release not and I could not find any information on
it.


Did the fetch logic change between 1.0.33 and 1.2.15 ?



I did a fetch with both on the same RRD and they do not return the same
result:



/usr/local/rrdtool-1.0.33/bin/rrdtool fetch
/usr/local/ogr/torrus/rrd/labce/CE/CE1/3.1.253.31_Fa0_0_if-mib-IFSPEED_1
00000000.rrd AVERAGE -r 300 -s 1164214200 -e 1164214500

ifHCInOctetsifHCInUcastPkts ifHCOutOctetsifHCOutUcastPkts
ifInDiscards ifInErrors ifOutDiscards ifOutErrors



1164214200: 2.4697370121e+02 2.4345375653e+00 2.8747105233e+02
2.0478456592e+00 0.0000000000e+00 0.0000000000e+00 0.0000000000e+00
0.0000000000e+00

1164214500: 2.4973870023e+02 2.4436822675e+00 2.7211157610e+02
2.1111507566e+00 0.0000000000e+00 0.0000000000e+00 0.0000000000e+00
0.0000000000e+00



While with 1.2.15 we have

/usr/local/rrdtool-1.2.15/bin/rrdtool fetch
/usr/local/ogr/torrus/rrd/labce/CE/CE1/3.1.253.31_Fa0_0_if-mib-IFSPEED_1
00000000.rrd AVERAGE -r 300 -s 1164214200 -e 1164214500

ifHCInOctets ifHCInUcastPkts ifHCOutOctets
ifHCOutUcastPkts ifInDiscards ifInErrors
ifOutDiscards ifOutErrors



1164214500: 2.4973870023e+02 2.4436822675e+00 2.7211157610e+02
2.1111507566e+00 0.0000000000e+00 0.0000000000e+00 0.0000000000e+00
0.0000000000e+00

1164214800: 2.3876253405e+02 2.3550167264e+00 2.6478978375e+02
2.0012293907e+00 0.0000000000e+00 0.0000000000e+00 0.0000000000e+00
0.0000000000e+00



An other test like this one :

/usr/local/rrdtool-1.0.33/bin/rrdtool fetch
/usr/local/ogr/torrus/rrd/labce/CE/CE1/3.1.253.31_Fa0_0_if-mib-IFSPEED_1
00000000.rrd AVERAGE -r 300 -s 1164214199 -e 1164214199

ifHCInOctetsifHCInUcastPkts ifHCOutOctetsifHCOutUcastPkts
ifInDiscards ifInErrors ifOutDiscards ifOutErrors



1164213900: 2.6194484373e+02 2.3953592604e+00 2.9259346129e+02
1.9986915888e+00 0.0000000000e+00 0.0000000000e+00 0.0000000000e+00
0.0000000000e+00

1164214200: 2.4697370121e+02 2.4345375653e+00 2.8747105233e+02
2.0478456592e+00 0.0000000000e+00 0.0000000000e+00 0.0000000000e+00
0.0000000000e+00



--> If the start is not on a boundary, it adjusts to the lower one.

--> If the end is not on a boundary, it adjusts to the upper one.



While with 1.2.15 we have

/usr/local/rrdtool-1.2.15/bin/rrdtool fetch
/usr/local/ogr/torrus/rrd/labce/CE/CE1/3.1.253.31_Fa0_0_if-mib-IFSPEED_1
00000000.rrd AVERAGE -r 300 -s 1164214199 -e 1164214199

ifHCInOctets ifHCInUcastPkts ifHCOutOctets
ifHCOutUcastPkts ifInDiscards ifInErrors
ifOutDiscards ifOutErrors



1164214200: 2.4697370121e+02 2.4345375653e+00 2.8747105233e+02
2.0478456592e+00 0.0000000000e+00 0.0000000000e+00 0.0000000000e+00
0.0000000000e+00



--> If the start is not on a boundary, it adjusts to the upper one.

--> If the end is not on a boundary, it adjusts to the upper one.



I have tried in Perl and it does the same thing.

#!/usr/bin/perl

use RRDs;

use Getopt::Long;



my $t_end="";

my $ok = GetOptions(

'rrd=s' => \$filename,

'start=s' => \$t_start,

'end=s' => \$t_end

);



my( $f_start, $f_step, $f_names, $f_data ) =

RRDs::fetch( $filename, "AVERAGE", '--resolution', 300, '--start',
$t_start, '--end', $t_end );

$ERR = RRDs::error;

if( $ERR )

{

print("Error during RRD fetch for $filename: $ERR\n");

exit 1;



}



print "STEP = $f_step\n";

for( my $j = 0; $j < @{$f_data}; $j++ )

{

for( my $i = 0; $i < @{$f_names}; $i++ )

{

$f_time = $f_start + ($j * $f_step);

print "$f_names->[$i] = [ $f_data->[$j]->[$i], $f_time ]\n";

}

}





Is it a problem in 1.2.15 or was it a problem in 1.0.33?

Where they both OK, it is just that the logic changed?



Thank,

Luc








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