gallery : 2001Aug16-M4 4SanClementeIs-menlo png

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These graphs are snapshots of the MRTG graphs of web server activity on the USGS Pasadena Office web server. In each case, the activity is the traffic seen by the Squid reverse-proxy server that acts as a front-end for the main web server. The Squid server acts as an accelerator for the site. The story of how this configuration came about is told in "Web Servers, Earthquakes, and the Slashdot Effect". The blue line is the total HTTP requests/min. the green is the number of requests that were served out of the Squid cache. The brown line is the cache hit ratio.

2001Aug16-M4 4SanClementeIs png

2001Aug10-M5 5portola png

2001Aug16-M4 4SanClementeIs-menlo png
M4.4 and M4.2 events offshore, near the south tip of San Clemente Island. The Menlo Park server generally gets more traffic than Pasadena. August 16, 2001

2001Aug16-M4 4SanClementeIs png

2001Aug10-M5 5portola png


Generated by album from MarginalHacks on Fri Aug 17 16:10:31 2001