Page History

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• TimePing:** /afs/slac/package/pinger/timeping.pl
  • Represents the old script to perform ping measurements and store raw data.
  • Stores raw data on nfs at:

    Code Block
    /nfs/slac/g/net/pinger/pinger_mon_data/ping-<YYYY>-<MM>.txt

• PingER2:
  • /afs/slac/package/pinger/pinger2/share/pinger/pinger2.pl
  • Represents the new Tool to perform ping measurements and store raw data.

  • Wiki Markup
    \[[http://confluence.slac.stanford.edu/display/IEPM/PingER2+at+SLAC]\]

  • Stores raw data on nfs at:

    Code Block
    /nfs/slac/g/net/pinger/pinger2/data/ping-<YYYY>-<MM>.txt e.g. /nfs/slac/g/net/pinger/pinger2/data/ping-2011-02.txt

• Ping_Data
  • /afs/slac/g/www/cgi-wrap-bin/net/offsite_mon/ping_data/ping_data.pl
  • Represents the web interface(cgi script) used to fetch data from remote monitoring node.
  • zips the data before transfer.
• GetData
  • /afs/slac/package/pinger/getdata.pl

  • Wiki Markup
    queries ping_data\[[http://slac.stanford.edu/cgi-wrap/ping_data.pl]\] to fetch data.

  • Stores old files as zipped File at

    Code Block
    /nfs/slac/g/net/pinger/pingerdata/hep/data/<host>/ping-<YYYY>-<MMM>.txt.gz

  • See Restoring PingER data for more details.
• Analyze
  • There is a group of analysis scripts, that pick up zipped data; do their analysis, aggregate data and prepare web reports.
  • The first script to be executed is analyze-hourly.pl which takes as input data the output of getdata.pl and from this aggregaytes the data to by day and writes the latest  to the /nfs/slac/g/net/pinger/pingerreports/hep/<metric>/ directory with the file name <metric><size><by><yyyy><mm>-<dd>.txt.gz,
    Example output filename:

    Code Block
    /nfs/slac/g/net/pinger/pingerreports/hep/minimum_rtt/minimum_rtt-100-by-node-2006-09-28.txt.gz

    Example output format (there are 24 hourly lines like this per day/per host pair):

    Code Block
    icfamon.dl.ac.uk lns62.lns.cornell.edu 108.871 ... 109.620 icfamon.dl.ac.uk lns62.lns.cornell.edu

  • The remaining analyze scripts (analyze-daily.pl, analyze-monthly.pl, analyze-allmonths.pl, and analyze-allyears.pl) take as input the data from analyze-hourly.pl ancd create files of the form:  

    Code Block
    /nfs/slac/g/net/pinger/pingerreports/hep/<metric>-<size>-by-<site|node>(-<YYYY>?)(-<mm>?)(-<dd>?).txt.gz

  • More information can be found on running getdata.pl and the analyze scripts to recover missing data.

IMPROTANT:    /nfs/slac/g/net/pinger/pingerreports/hep/<metric> contains the  recent years data however /nfs/slac/g/net/pinger/pingerdata/hep/data contains old data(from 1998 to 2007) for nodes.

• PRM
  • /afs/slac/package/pinger/prm/prm.pl
  • The script prm.pl, is used to create csv files for the analyzed data which can then be used by PingER motion charts or PingER Executive Plots.
  • The script requires a configuration file, which contains entries for all the reports prm should create. These entries are of the form:

    Code Block
    <metric name> <monitoring site> <country||continent> <tick> (<filter>?)

  • It gets its data from pingtable.pl either by calling it locally or by accessing it via the web.
  • The reports created by prm are available online.
  • The reports are used by the metric motion plots, the metric maps and the executive plots.

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