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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.

2001may14-M3 9Devore png

2001jun10-M5 0washington png

2001mar24-ontarioM3 3 png
M3.3 south of Rancho Cucamonga, 16:41 PST
March 24, 2001

2001may14-M3 9Devore png

2001jun10-M5 0washington png


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