13. “Our own years of testing
have conclusively shown that
when speed of a feature or
product improves, usage,
quite simply, goes up.”
http://googleblog.blogspot.com/2009/12/this-week-in-search-121809.html
14. 100+ web, api, jobs
40+ databases
Many more doing lots of other stuff...
60. Quick graphs
# GNUPLOT
set terminal png
set output 'listings.png'
set yrange [0:2000]
set xdata time
set timefmt "%d/%B/%Y:%H:%M:%S"
set format x "%H:%M"
plot '/tmp/pagetimes.dat' using 1:2 with points
71. “I/O Profiler”
Lightweight, inline profiling
Start and end times wrapped around service calls
databases, memcache, apc, 3rd party services, etc.
Enable with query string