java Programming Glossary: speedup

Correctly multithreaded quicksort or mergesort algo in Java?

http://stackoverflow.com/questions/2210185/correctly-multithreaded-quicksort-or-mergesort-algo-in-java

So we wrote our own I wrote it and we did indeed gain good speedups I wrote a multithreaded quicksort and due to its partitioning.. for other tasks on that same 16 virtual cores Mac I saw speedup of up to x7 by parallelizing the code and I'm by no mean an.. O n log n I'd really appreciate a x7 or x8 or even x16 speedup. java multithreading sorting quicksort mergesort share improve..

http://stackoverflow.com/questions/2422289/any-recommended-java-profiling-tutorial

is that if you can fix enough things to get a 10 or 20 speedup that's pretty good and I never hear stories of profilers being.. hear stories of profilers being used repeatedly to get speedups of much more than that. Another approach is not to measure..

Fastest way to determine if an integer's square root is an integer

http://stackoverflow.com/questions/295579/fastest-way-to-determine-if-an-integers-square-root-is-an-integer

false t z & z r z & t 1 if r t 1 r t r while t 1LL 33 The speedup here is obtained in three ways precomputed start value equivalent..

If profiler is not the answer, what other choices do we have?

http://stackoverflow.com/questions/4387895/if-profiler-is-not-the-answer-what-other-choices-do-we-have

let's be positive. If one wants to find opportunities for speedup it is really very simple Sampling should be uncorrelated with.. were identified and fixed resulting in a compounded speedup of 43 times. It was not essential to know precisely the size.. the expected savings given those samples. INSERTED And the speedup factor you get is governed by another distribution BetaPrime..

What optimizations can I expect from Dalvik and the Android toolchain?

http://stackoverflow.com/questions/4912695/what-optimizations-can-i-expect-from-dalvik-and-the-android-toolchain

won't be invoked often. To some degree the major source of speedup comes from eliminating the repeated interpreter parsing overhead..

What is Boilerplate code , Hot code and Hot spots?

http://stackoverflow.com/questions/7916985/what-is-boilerplate-code-hot-code-and-hot-spots

do indexing more directly not through a function call. The speedup would be 20 12 1.67 or about a 67 speedup. Notice I don't give.. call. The speedup would be 20 12 1.67 or about a 67 speedup. Notice I don't give a hoot about exact when it comes to timing...

Fastest way to iterate over all the chars in a String

http://stackoverflow.com/questions/8894258/fastest-way-to-iterate-over-all-the-chars-in-a-string

methods these could help parsing libraries beep beep beep speedup. Keep dreaming Happy Strings ~SH The test used the following..

How to Cache InputStream for Multiple Use

http://stackoverflow.com/questions/924990/how-to-cache-inputstream-for-multiple-use

1 By cache i meant store for later use not as a way to speedup the application. Also is it better to just read up the input..

Calculating and printing the nth prime number

http://stackoverflow.com/questions/9625663/calculating-and-printing-the-nth-prime-number

if n i 0 return false return true This gives us another speedup by a factor of nearly 1.5 so we'd need about one and a half.. That's still easy enough to implement and yields another speedup by a factor of 1.25 minus a bit for more complicated code ... on. Each prime p whose multiples are eliminated yields a speedup of almost p p 1 so the return decreases while the cost code..