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Questions tagged
performance
1195 questions · page 3 of 24
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15
votes
2
answers
C++ vector or Queue to build large Q in term of memory and speed
c++
performance
vector
queue
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
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