[rrd-users] I don't understand ':strftime' in command: 'GPRINT:IORATE:MAX:%c:strftime'. Error creating the Storage IORATE PNG file

[Steve Shipway]

You are mixing the old and new GPRINT syntaxes, which is why it doesn’t work.

 

Old deprecated style:

  GPRINT:varname:cf:format

Where ‘varname’ is a DEF or CDEF, and CF is AVG, MAX, MIN, LAST

 

New style:

 VDEF:vdefname=varname,function

 GPRINT:vdefname:format[:strftime]

The new style uses a VDEF in the GPRINT, which has to be defined separately.  ‘function’ is one of the summary stat RPN functions (see the RPN manual) that include AVERAGE, MAXIMUM and also the LSL and Percentile calculations.

 

So, to do what you want, you would need to have (using the new syntax) something like:

 

  VDEF:ioratemax:iorate,MAXIMUM

  GPRINT:ioratemax:’Maximum IO value %5.2lf%sbps at ’

 GPRINT:ioratemax:%c:strftime

 

Steve

 

Steve Shipway

s.shipway at auckland.ac.nz

 

From: rrd-users-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch [mailto:rrd-users-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch] On Behalf Of Steven Sim
Sent: Thursday, 19 June 2014 3:08 a.m.
To: rrd-users at lists.oetiker.ch
Subject: [rrd-users] I don't understand ':strftime' in command: 'GPRINT:IORATE:MAX:%c:strftime'. Error creating the Storage IORATE PNG file

 

Err...

 

I cannot figure out this error ...

 

1341 entries processed!

ERROR: I don't understand ':strftime' in command: 'GPRINT:IORATE:MAX:%c:strftime'.

Error creating the Storage IORATE PNG file

 

The syntax of the GPRINT command as follows ...

 

.

.

.

HRULE:${_MAXVALUE}${BLUE}:'80% Max Value':dashes

GPRINT:${_METRIC1}:MAX:'Maximum IO value %5.2lf'

GPRINT:${_METRIC1}:MAX:%c:strftime

 

The rrdtool graph render command works just fine until I add the last line

 

What's wrong with the strftime syntax?

 

Deepest Regards

Steven Sim

 

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