r245 question

[tbar]

In revision 245 the log message states:

Author: madmaxoft: MTRand class is not created in each tick, therefore much improving tick-thread time (now uses ~5 % CPU instead of one full core)

This sounds like a massive improvement but is it? How should I interpret the message above?

[xoft]

I'ts not really massive, but still is quite a lot

On my QuadCore, the tick thread was hogging one core all the time (-> 25 % total CPU) before the change. After the change, the thread is using only about 5 % of the total CPU. Both values were measured with 1 player on the server, 17 chunks viewdistance.

This means that it now runs at least 5 times faster, maybe even more, because a thread can't run faster than one-core-at-a-time.

Note, however, that this was a debug build. In a release build this needn't be so noticable.

[FakeTruth]

It was even worse on Linux before, because the Linux version of MTRand reads a file each time it's created

[tbar]

That _does_ sound massive