Re: [PATCH] Teach "git add" and friends to be paranoid

Dmitry Potapov [off-list ref] writes:

If you look at speed-up numbers, you can think that the numbers are
unstable, but in fact, the best time in 5 runs does not differ more
than 0.01s between those trials. But because difference for >=128Kb
is 0.05s or less, the accuracy of the above numbers is less than 25%.

Then wouldn't it make the following statement...

But overall the outcome is clear -- read() is always a winner.

"... a winner, below 128kB; above that the difference is within noise and
measurement error"?

It would be interesting to see what difference Nehalem, which has a
smaller but much faster L2 cache than Core 2. It may perform better
at larger sizes up to 256Kb.

Interesting.