Red Hat Bugzilla – Bug 964135
pmchart fails to plot an archive
Last modified: 2013-08-05 11:55:32 EDT
Description of problem:
I'll attach three different archives, one for incoming traffic, one for outgoing traffic, and one containing both, all generated from the same CSV data. Using pminfo/pmval shows no differences for the corresponding metrics.
Opening csv-data-lan-out with "pmchart -t 1m -a csv-data-lan-out" and plotting csv_data_lan_out.test.lan_outbytes_linux.eth0.txbyt_s works as expected but opening csv-data-lan-both with "pmchart -t 1m -a csv-data-lan-both" and plotting csv_data_lan_both.test.lan_outbytes_linux.eth0.txbyt_s produces an empty view.
Version-Release number of selected component (if applicable):
Created attachment 749294 [details]
| ... plotting csv_data_lan_both.test.lan_outbytes_linux.eth0.txbyt_s
| produces an empty view
It appears there is only a single value in the archive for this metric - is that expected? It also has a timestamp that is for the final fetch group in the archive.
$ pmdumplog -z -a csv-data-lan-both | grep csv_data_lan_both.test.lan_outbytes_linux.eth0.txbyt_s
PMID: 245.0.12 (csv_data_lan_both.test.lan_outbytes_linux.eth0.txbyt_s)
23:59:00.000 245.0.12 (csv_data_lan_both.test.lan_outbytes_linux.eth0.txbyt_s): value 657803.87
pmchart is going to have a hard time working with a single data point. Could this be a failure to import all the data you expected, Marko? (and also, is it an archive that would be susceptible to the earlier log import issues around out-of-time-order records?)
As per earlier comments, on closer inspection of the archive this appears to not be a bug.
yes, agreed, all the evidence suggests that this was also collateral damage of bug 958745.