Questions tagged [performance]

15

votes

2

answers

C++ vector or Queue to build large Q in term of memory and speed

asked 2013-01-15T10:36:11.870

11

votes

5

answers

C# Array slice without copy

c# arrays performance slice space-efficiency

asked 2013-01-14T18:01:55.643

9

votes

6

answers

ThreadLocal HashMap vs ConcurrentHashMap for thread-safe unbound caches

java performance caching thread-local concurrenthashmap

asked 2013-01-12T15:28:44.453

10

votes

1

answers

What are the "golden rules" to increase CSS3 transition performance on mobile devices?

iphone performance html css css-transitions

asked 2013-01-11T11:26:08.383

9

votes

3

answers

Awful MSMQ Performance Using ReceiveById

c# .net performance msmq message-queue

asked 2013-01-05T00:10:54.743

121

votes

4

answers

Why is pow(a, d, n) so much faster than a**d % n?

python performance pypy

asked 2013-01-03T06:00:16.263

12

votes

4

answers

Switch seems slower than if

java performance if-statement switch-statement

asked 2012-12-30T06:32:53.880

18

votes

1

answers

getattr() versus dict lookup, which is faster?

python performance getattr dynamic-attributes

asked 2012-12-29T18:56:21.327

250

votes

2

answers

Why is processing a sorted array slower than an unsorted array?

c# .net performance language-agnostic

asked 2012-12-24T17:09:49.333

69

votes

9

answers

List of all unique characters in a string?

python performance data-structures

asked 2012-12-16T15:33:24.523

9

votes

4

answers

Does size of a VARCHAR column matter when used in queries

sql sql-server performance sql-server-2000 query-optimization

asked 2012-12-15T17:36:27.443

52

votes

2

answers

Why are difference lists more efficient than regular concatenation in Haskell?

performance list haskell time-complexity difference-lists

asked 2012-12-14T13:04:34.260

9

votes

2

answers

Optimizing Tomcat / Garbage Collection

java tomcat optimization garbage-collection performance

asked 2012-12-13T18:15:09.813

9

votes

3

answers

is concat faster or slower than push

javascript performance

asked 2012-12-13T13:55:04.903

8

votes

2

answers

Performance of different math functions in x86?

c++ performance math floating-point

asked 2012-12-12T19:30:28.970

16

votes

4

answers

Are there any benefits to using sql_variant over varchar in SQL Server?

c# performance sql-server-2012 varchar sql-variant

asked 2012-12-11T15:32:31.250

16

votes

4

answers

Why is "grep --ignore-case" 50 times slower?

performance bash time grep

asked 2012-12-11T11:41:54.237

28

votes

4

answers

What is the cost of creating actors in Akka?

performance scala akka

asked 2012-12-10T19:50:21.270

23

votes

7

answers

How bad is it in practice to over-nest selectors in SASS/SCSS?

css performance css-selectors sass

asked 2012-12-10T16:46:52.850

63

votes

5

answers

How to get the CPU cycle count in x86_64 from C++?

c++ c performance x86 rdtsc

asked 2012-12-07T23:18:41.437

16

votes

9

answers

Java as a scripting language for Java?

java performance scripting jvm

asked 2012-12-06T16:03:28.270

12

votes

1

answers

findViewById several times VS global variable

android performance

asked 2012-12-04T11:47:49.123

44

votes

7

answers

How is the jQuery selector $('#foo a') evaluated?

javascript jquery performance jquery-selectors sizzle

asked 2012-12-03T07:10:46.157

18

votes

2

answers

Why is Oracle ignoring index with ORDER BY?

sql performance oracle-database database-performance sql-execution-plan

asked 2012-11-21T16:38:51.727

9

votes

2

answers

tomcat7 vs. tomcat6, Is there any significant difference in their performance?

java performance tomcat6 tomcat7 stress-testing

asked 2012-11-18T12:38:19.143

13

votes

6

answers

Performance with time related algorithm

php performance algorithm merging-data

asked 2012-11-16T16:56:36.520

8

votes

4

answers

Replicate() versus a for loop?

performance r for-loop replicate

asked 2012-11-16T07:37:00.110

19

votes

2

answers

Is ADD 1 really faster than INC ? x86

performance optimization assembly x86

asked 2012-11-14T16:53:40.910

11

votes

3

answers

Why is accumulate faster than a simple for cycle?

c++ performance

asked 2012-11-06T01:54:22.690

15

votes

2

answers

KnockoutJS IE8 performance issues and memory leaks

performance internet-explorer-8 knockout.js memory-leaks

asked 2012-11-05T07:06:22.937

18

votes

1

answers

requestFocus for TextView on Jelly Bean slow

android performance android-4.2-jelly-bean

asked 2012-10-31T14:36:00.763

36

votes

3

answers

Why is std::atomic<bool> much slower than volatile bool?

c++ multithreading performance c++11 atomic

asked 2012-10-30T09:15:41.783

8

votes

3

answers

Which is the most efficient way to do alpha mask in opencv?

performance optimization opencv

asked 2012-10-29T19:57:46.177

10

votes

3

answers

Why is memcpy slower than a reinterpret_cast when parsing binary data?

c++ performance

asked 2012-10-29T07:03:04.910

40

votes

1

answers

Does omitting the frame pointers really have a positive effect on performance and a negative effect on debug-ability?

performance visual-studio-2010 visual-c++ x86 stack-frame

asked 2012-10-22T07:00:08.053

41

votes

6

answers

I need a slow C# function

c# performance cpu-usage wait performance-testing

asked 2012-10-21T19:51:56.477

8

votes

1

answers

Renaming a 900kb pdf file takes long time

php performance file-rename

asked 2012-10-17T23:03:01.560

9

votes

2

answers

How does the size of a binary influence the execution speed

c performance numerical

asked 2012-10-17T15:06:01.193

47

votes

9

answers

Why doesn't a compiler optimize floating-point *2 into an exponent increment?

c++ c performance optimization compiler-optimization

asked 2012-10-16T16:23:05.227

43

votes

2

answers

How efficient/fast is Python's 'in'? (Time Complexity wise)

python performance time-complexity operator-keyword

asked 2012-10-15T23:37:46.390

10

votes

2

answers

WPF Application stalls/freezes after first interaction, like button click

c# wpf performance buttonclick intellitrace

asked 2012-10-14T19:37:06.923

11

votes

3

answers

Using WCF from WPF very slow on first use

wpf wcf performance startup datacontractserializer

asked 2012-10-11T09:03:27.787

9

votes

5

answers

C++ std::map or std::set - efficiently insert duplicates

c++ performance stdmap stdset

asked 2012-10-10T18:54:30.633

97

votes

10

answers

Java get available memory

java performance web-services memory operating-system

asked 2012-10-09T20:19:14.233

239

votes

18

answers

How can I find Java heap size and memory used (Linux)?

java linux performance memory heap-memory

asked 2012-10-09T10:03:10.317

81

votes

5

answers

Text processing - Python vs Perl performance

python regex performance perl text-processing

asked 2012-10-09T05:49:17.320

42

votes

8

answers

How to find the size of the L1 cache line size with IO timing measurements?

c++ c performance caching cpu-architecture

asked 2012-10-01T14:19:09.187

63

votes

1

answers

Live Binding with Automatic updates in XE3 (no need to call Notify() as in XE2)

performance delphi data-binding virtualization delphi-xe3

asked 2012-09-30T03:49:35.160

29

votes

2

answers

What could affect Python string comparison performance for strings over 64 characters?

python string performance time-complexity

asked 2012-09-28T22:08:12.507

40

votes

5

answers

FindBugs warning: Inefficient use of keySet iterator instead of entrySet iterator

java performance findbugs

asked 2012-09-28T11:36:11.943

Questions tagged performance