On Mon, Jan 13, 2014 at 3:33 PM, Tim Starling tstarling@wikimedia.orgwrote:
In fact, it would slow down individual requests by a factor of 7, judging by the benchmarks of Calxeda and Xeon CPUs at
http://www.eembc.org/coremark/index.php
So instead of a 10s parse time, you would have 70s. Obviously that's not tolerable.
Question - is that 10s linear CPU core time for a parse, or 10s of average response time given our workloads?
If it is the linear one-core parse processing time, how much of that is dependencies on DB lookups and the like, externalities within the infrastructure rather than the straight-line CPU time needed for the parse itself?
Amdahl's law works both ways...