Information on the SLAC Ethermeter Data Collection

The ethermeter data collection is driven by a crontab entry in /usr/local/netdata/crontabs/cronlist.peleus*. It is performed once an hour.

Since the list of active* ethermeters is dynamic, it is fetched from CANDO at various times during the day. The ethermeters' configuration* information is fetched daily at 8:15am from the network itself.

Currently the data is collected and graphed once an hour. Plots are generated hourly during each day for: traffic volume*, and errors*.

The analysis for yesterdays traffic* and error* statistics is run between 12-6 am every moning.

The graphs for yesterday, weekly, and fortnightly timespans are produced between 3 and 8 am daily.

In the analysis, certain data values which exceed thresholds are flagged as alerts, and are extracted for the Daily Summaries.

/usr/local/netdata/emeters/ckparam

This script is used to check the current parameters in the ethermeters.

/usr/local/netdata/emeters/ckrev

This script is used to check the current ethermeter firmware revisions.

/usr/local/netdata/emeters/em2html

This script is used to convert the daily ethermeter report to html for World Wide Web display.

/usr/local/netdata/emeters/fe

This script generates a protocol analysis from the ethermeters.

/usr/local/netdata/emeters/fetch_ifs

This script is used to fetch the interface stats.

/usr/local/netdata/emeters/fetch_peak

This script is used to fetch the peak stats.

/usr/local/netdata/emeters/makeutil

This script formats the summary data for processing by the script that makes the tabular report.

/usr/local/netdata/emeters/prosum

This script summarizes the protocol analysis of the ethermeters.

/usr/local/netdata/emeters/sum-emeter-data

This script calculates the total number of packets and kilobytes per second for each ethermeter.