There is a Readme unter /opt/splunk/etc/apps/pinger/ with details of configuration.
Extract the tarball into $SPLUNK_HOME/etc/apps. Once extracted, review pinger/default /pinger.conf.spec and pinger.conf.example to understand the configuration format. Edit pinger/local/pinger.conf to add monitor stanzas. Edit pinger/local/inputs.conf to enable/disable global monitoring and change the frequency. Monitoring more websites should use longer intervals (30 - 60s) whereas fewer monitors may be run more freqwuently.
In the pinger.conf it is very easy to configure the sites to be monitored, for example:
# The following stanza configures basic monitoring for a web resource
[splunk_com]
label = splunk.com
host = www.splunk.com
resource = /
I hope that helps, if not please specifiy your question a bit more.
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