=== apachebench === Rails 2.1 + postgres-pr 0.4 $ ruby -v ruby 1.8.6 (2008-08-08 patchlevel 286) [i686-linux] With no other load, push 15 updates. $ ./apachebench 15 Requests per second: 16.41 [#/sec] (mean) Time per request: 60.955 [ms] (mean) Generating a load of 10 sequential hits on the front page. $ ab -n 10 http://icecondor.com/ Requests per second: 0.52 [#/sec] (mean) Time per request: 1932.842 [ms] (mean) While the front page hits are running, push 15 updates $ ./apachebench 15 Requests per second: 4.00 [#/sec] (mean) Time per request: 250.044 [ms] (mean) $ ./apachebench 15 Requests per second: 18.06 [#/sec] (mean) Time per request: 55.362 [ms] (mean) conclusion: location updates are lightweight, with at least 4 updates per second supported. Higher load, 100 updates across 5 concurrent clients. $ ./apachebench 100 -c 5 Requests per second: 9.90 [#/sec] (mean) Time per request: 101.027 [ms] (mean)