CPU benchmark advice
← Thread:User talk:Voidious/CPU benchmark advice/reply (27)
You do not have permission to edit this page, for the following reasons:
You can view and copy the source of this page.
Return to Thread:User talk:Voidious/CPU benchmark advice/reply (27).
Probably Intel Turbo Boost is confusing the Robocode engine. The engine assumes CPU speed is constant, which is not true with Turbo Boost. CPU constant is being measured while the clock is still low.
I'd guess dynamic clocking (i.e. turbo boost) also explains the 4 instances running faster than 1, since 1 instance may not be setting the cpu usage high enough for the CPU to go to it's full clock speed.
I figured you guys were right, but I tried running 1-3 threads of RoboResearch to trigger any clock increase and recalculating the CPU constant while that was going on, and it came out even higher. My best guess is the benchmark used to calculate CPU constant is just way more optimized on Mac and/or on Apple's JVM than in Ubuntu/OpenJDK. Still sounds like a good bet on the slow result for 1 instance though.
Try running background threads in lower priority, or clients in higher priority.
But never tried OpenJDK, I´m using Oracle/Sun Hotspot JVM here.
