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by: Alex Vinokur |
last post by:
Copying files : input to output
===============================
C/C++ Performance Tests
=======================
Using C/C++ Program Perfometer
http://sourceforge.net/projects/cpp-perfometer
http://alexvn.freeservers.com/s1/perfometer.html
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by: Alex Vinokur |
last post by:
Various forms of argument passing
=================================
C/C++ Performance Tests
=======================
Using C/C++ Program Perfometer
http://sourceforge.net/projects/cpp-perfometer
http://alexvn.freeservers.com/s1/perfometer.html
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by: Amit Dedhia |
last post by:
Hi
I am developing a Dot net application (involving image processing) on
a uni processor. It works well on my machine. I then take all my code
on a multi processor, build and run the application there. There is
performance degradation.
The usual performance of the application on MP machine is better than
that of uni processor machine. But the performance of MP degrades when
it comes to the multi-threaded part of the application. I am...
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by: Alex Vinokur |
last post by:
===================================
------------- Sorting -------------
Comparative performance measurement
===================================
Testsuite : Comparing Function Objects to Function Pointers
Source : Technical Report on C++ Performance
Tool : The C/C++ Program Perfometer (Version 2.8.1-1.19-Beta)
* http://sourceforge.net/projects/cpp-perfometer/
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by: Alex Vinokur |
last post by:
Here are results of comparative performance tests carried out
using the same compiler (gcc 3.2)
in different environments (CYGWIN, MINGW, DJGPP)
on Windows 2000 Professional.
The following C-functions were tested :
* strcpy
* memcpy
* memmove
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| |
by: Mark Shelor |
last post by:
I've encountered a troublesome inconsistency in the C-language Perl
extension I've written for CPAN (Digest::SHA). The problem involves the
use of a static array within a performance-critical transform function.
When compiling under gcc on my big-endian PowerPC (Mac OS X),
declaring this array as "static" DECREASES the transform throughput by
around 5%. However, declaring it as "static" on gcc/Linux/Intel
INCREASES the throughput by...
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by: bernhard.willems |
last post by:
We are using DB2 UDB version 8.1 fp7 & fp9 on AIX 5.2.
On our databases we do massive inserts and deletes (millions of rows).
The performance is dramatically reduced because of pseudo deleted keys.
In a 10 minutes it goes from 18000 transaction per minute to 9000 and
lower.
When an index reorg with CLEANUP ONLY PAGES is executed, the number of
transactions climbs again. But a few minutes later it drops again to
9000.
We have to run the...
|
by: Lee |
last post by:
Hi,
I'm a stream virgin and am attempting to output strings to a file. My
approach is to write the string initially to a 'stringstream' and only when
complete write the stringstream to the file (ofstream).
The process works fine however appears to be rather slow. For example
outputting about 2Mb of data takes a couple of minutes (most of the time
appears to be writing to the stringstream) and as I'm creating several
hundred files in...
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by: pantagruel |
last post by:
Hi,
It is generally stated that stringbuilder should be used instead of
just concatenating strings with the plus operator.
That's fine enough what I'm wondering in cases I have:
String S = "hello" + World;
Does it make any sense to use Stringbuilder in a case like the above,
|
by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
|
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
| |
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
|
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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