Performance issues

We have instrumented the "" script to evaluate the performance of the NWS server.

The timing of each NWS query has been recorded in a log, using the gettimeofday Unix system call. Its accuracy largely exceeds the measured intervals.

Several experiments have been run in NWS installation at CNAF:


In summary:

Although one might expected that "nws_extract" take a longer time (since it requires the access to a memory server, that in our case is located on the sensor), it is nonetheless difficult to justify a difference of one order of magnitude.


Next: Conclusions

Previous: Integrating nwsip into an Information Service

WP7 meeting 24-1-2002