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Derived Metrics and pmlogsummary.. ? Is it supposed to work?

To: pcp@xxxxxxxxxxx
Subject: Derived Metrics and pmlogsummary.. ? Is it supposed to work?
From: Paul Smith <psmith@xxxxxxxxxx>
Date: Thu, 8 Sep 2011 11:00:57 +1000
hey all,

I created a derived metric via the 'creative' environment variable way, works 
great for pmdumptext etc.

Doesn't seem to work for pmlogsummary though ?

psmith@xxxxxxxxxxxx:/var/log/pcp/pmlogger/app1 [PRODUCTION]
$ cat /tmp/foo
bytes_per_query = delta(aconex.controllers.db.in.bytes) / 
delta(aconex.controllers.db.count)

psmith@xxxxxxxxxxxx:/home/psmith [PRODUCTION]
$ export PCP_DERIVED_CONFIG=/tmp/foo 

$ pmlogsummary -a  20110906 -S@08:00 -T@09:00 -I bytes_per_query[mel/total]
Log Label (Log Format Version 2)
Performance metrics from host app1
  commencing Tue Sep  6 08:00:00.000 2011
  ending     Tue Sep  6 09:00:00.000 2011

psmith@xxxxxxxxxxxx:/var/log/pcp/pmlogger/app1 [PRODUCTION]
$ 


I get nothing.  Works fine for pmdumptext though ?

$ pmdumptext -X -a  20110906 -S@08:00 -T@09:00  bytes_per_query[mel/total] | 
head
[ 1] bytes_per_query["mel/total"]

             Column          1
Tue Sep  6 08:00:00          ?
Tue Sep  6 08:00:01      6.04K
Tue Sep  6 08:00:02      6.05K
Tue Sep  6 08:00:03      6.04K
Tue Sep  6 08:00:04      6.05K
Tue Sep  6 08:00:05      6.04K
Tue Sep  6 08:00:06      6.05K


Why wouldn't it work in pmlogsummary?

tah,

Paul



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