If you have selected to store billing messages to the database,
it is also possible to generate and display a set of histograms
from the data in these tables. To turn on plot generation, set
the property httpd.enable.plots.billing to
true and restart the domain in which the
httpd is running.
Example:
Extract from the layout file:
[httpdDomain]
billing.enable.db=true
httpd.enable.plots.billing=true
[httpdDomain/httpd]
[httpdDomain/billing]
...
The the frequency of plot refreshing and the type of plot produced can be controlled by:
billingPlotsTimeoutInMins (defaults to
30)
httpd.plots.billing.type (defaults to
png and can be set to gif)
The plots provide aggregate views of the data for 24-hour, 7-day, 30-day and 365-day periods.
The plot types are:
(Giga)bytes read and written for both dCache and HSM backend (if any)
Number of transactions/transfers for both dCache and HSM backend (if any)
Maximum, minimum and average connection time
Cache hits and misses
The data for this last histogram is not automatically
sent, since it contributes significantly to message
traffic between the pool manager and the billing
service. To store this data (and thus generate the
relevant plots), the
poolmanager.enable.cache-hit-message
property must be set either in
dcache.conf or in the layout file
for the domain where the poolmanager runs:
poolmanager.enable.cache-hit-message=true
Each individual plot can be magnified by clicking on it.