thought.log

2007-03-13T00:02:00.000+03:00

C++ vs Java vs .NET
on Solaris & Windows

It's article shows performance test results for following environments:

C++ (Visual Studio 2005/VC 8.0)/ Windows 2003/ Intel P4 2GHz 1Gb RAM
C++ (gcc 3.3.4 +STLport 4.5.3) / Sun Solaris 10 / Sun Fire v210 (2x1.34 GHz UltraSPARC) 4Gb RAM
C++ (Visual Studio 2005/VC 8.0)/ Windows XP/ Intel Core 2 Duo E6300 (1,8 Ghz) 1Gb RAM
Java (JDK 1.6) / Windows 2003 / Intel P4 2GHz 1Gb RAM
Java (JDK 1.6) / Sun Solaris 10 / Sun Fire v210 (2x1.34 GHz UltraSPARC) 4Gb RAM
Java (JDK 1.6) / Windows XP/ Intel Core 2 Duo E6300 (1,8 Ghz) 1Gb RAM
C# (.NET 2.0) / Windows XP/ Intel Core 2 Duo E6300 (1,8 Ghz) 1Gb RAM

Overview

All tests specified values as time execution in seconds (with milliseconds) and smaller value is the better result.
It's a primitive single-thread test. The multi-thread test is work for me in future.
Java always ran in server VM mode (-server param).

Test source code :

C++ source
Java source
.NET source
EchoServer source (C++ only) for network performance test

You can get test result table from here

Result diagrams:

1. Objects creation test
2. Call virtual method with string (for C++ uses STL string) arguments and result

(Diagram will be publish later and not available now - please read table results)

3. Call a non-virtual usual method with string (for C++ uses STL string) arguments and result

(Diagram will be publish later and not available now - please read table results)

4. Network performance test for sockets (TCP/IP). Blocking mode with packet size 256 & 10000 iteration

5. Network performance test for sockets (TCP/IP). Blocking mode with packet size 256 & 100000 iteration

6. Call a virtual method with long arguments and result

7. Call a non-virtual method with long arguments and result

2007-03-07T12:02:00.000+03:00

MyPhotoAlbum. Act II

My account is removed by admin of MyPhotoAlbum today with the following message:
"
We have noticed that you have not uploaded any photos to your MyPhotoAlbum account, even though the account was activated over 127 days ago.

In order to provide the best possible service to our members, we automatically cancel inactive accounts after 127 days. We have therefore canceled your account for username 'abdurakhmanov'."

But I have in myphotoalbum 3 albums & more photos ;-)
I think my account is removed because of I set one message on album title about myphotoalbum service and recent "surprise".

2007-03-06T17:18:00.000+03:00

Arghh... A MyPhotoAlbum service suprise! :(
"Unless you or one of your site visitors makes a purchase from your MyPhotoAlbum site within the next 363 days, your account may be deleted."

Don't use MyPhotoAlbum if you want this for free!
I'm already get the new service and my photo album was at http://picasaweb.google.com/abdulla.abdurakhmanov
and I'll remove the exists account at myphotoalbum.com

2007-01-23T18:23:00.000+03:00

Intel & Sun partnership...

Heh...
"[AMD] understands how business works, and that Intel's endorsing Solaris is generally good for Sun."
-- John Fowler Sun Microsystems
http://www.zdnetasia.com/news/software/0,39044164,61983979,00.htm

2007-01-18T11:41:00.000+03:00

Remoting frameworks performance comparison...
I take a simple test for Web-services (JAX-WS, ASP.NET) and BinaryNotesMQ performance and get the following results:

Environment: Intel Core 2 Duo 6300 / 1Gb RAM.
OS: Windows XP SP2
Transaction description: There is a process that calling service with 3 input params: 1 integer, 2 string parameters (contain small length values - approximately 5 chars) and receiving return result as simple string (~approximately 10 chars).

BNMQ: 80 bytes / 20000 tps (Java 1.6/BinaryNotes v1.4, PTPSession call async style)
ASP.NET: 643 bytes/ 400 tps (ASP.NET 2.0, async web-service call)
JAX-WS: 672 bytes/ 250 tps (Java 1.5, sync web-service call)
* Packet len is specified for call packet (without return result packet size).

Performance in tps (Transactions per second):

2007-01-08T20:44:00.000+03:00

The version 1.3 of BinaryNotes is coming...
This photo demonstrate it's difficult work. Compare it with this photo... ;)

2006-12-12T14:58:00.000+03:00

Java6 release is available now!
Under my tests this release improved performance really up to 20-30% (BinaryNotes)

2006-12-11T23:24:00.000+03:00

New version of BinaryNotes 1.2 is released... but 1.3 already in progress and 1.4 is planned too ... ouh...
I'm tired :)

2006-11-07T12:31:00.000+03:00

The new version of BinaryNotes (1.1) has been released some time ago.
But the new version 1.2 with support SET,DEFAULT and DER encoding is almost ready now. ;)
Creation of BinaryNotes needs more time, but i coming soon to new project where BinaryNotes is subproject.

2006-07-24T13:33:00.000+04:00

Has temporarily sold a house computer. Therefore there was a small pause.
:)

2006-05-28T04:27:00.000+04:00

My Open Source Projects
I published some own projects on sourceforge under LGPL/GPL v2 licenses .
It is BinaryNotes - the ASN.1 framework for C# and Java, and a simple implementation of finite state machine concept including the modeling utility for creation a FSM model.

2006-05-02T23:20:00.000+04:00

Recently in Moscow city (Russia) occurred the conference Sun Tech Days.
I am present on this conference the report "Practical use of Java technologies in telecommunication"...
The photos from conference may see at my photoalbum.
Note: Not all official photos is not received still. I am waiting for Sun. When i will receive the photos then i will put these to album.

2006-05-02T18:42:00.000+04:00

I for a long time develop for Java and now for C#, but never know that this languages supports multilingual id's. It's is powerfull functionality for embedded languages, but for these must have more lingual problems. I am shaken. :)

2006-05-01T15:19:00.000+04:00

Heh.. Stallman, Stallman... :)

When Richard Stallman learned that a compiler architect from ATI would be speaking at MIT, he immediately started organizing a protest against ATI's damaging free software policies.
http://www.fsf.org/blogs/community/rms-ati-protest.html

2006-05-01T14:53:00.000+04:00

It's is really strange, but Google
nothing knows about Gmail :)

2006-04-30T22:02:00.000+04:00

IIOP.Net is the best!
As wrote earlier, I searched for small library (or framework) for exposure remoting interface with C# and Java bindings...
Today i tested a library IIOP.NET. It is really working library, and maybe, the best library.
Heh... And again it's using basics from CORBA.
But have some restrictions:

.NET Compact Framework does not supported (Not because the library does not support, and because of Microsoft which have not implementation .NET Remoting on CF).
Have some problems with interoperability Java 2 C#
Generic collections does not support (but i have added this support).

The test has following remote interface:

public interface ITest
{
string produceHello(string param); // simple operation
ITestRemoteObj getRemoteObj(); //remote reference
ITestValueType getObjByValue(); // object by value (valuetype)
ICollection getCollection(); // collection

// my support for generics
System.Collections.Generic.ICollection<ITestValueType> getGenericCollection();

// callback example
void doCallBack(ITestCallBack callBack);
}

It's is really worked for C#.. But with Java (over JavaIDL) have some troubles...
If you needs support for a "generic" collections for IIOP.NET, then welcome to sourceforge.
I have already submited the patch there.

2006-04-28T13:41:00.000+04:00

I analyzes a some source codes and have found a following funny code in memory manager:

// Fill pattern for bytes preceeding allocated blocks
unsigned int prefixPattern = 0xbaadf00d;
// Fill pattern for bytes following allocated blocks
unsigned int postfixPattern = 0xdeadc0de;
// Fill pattern for freshly allocated blocks
unsigned int unusedPattern = 0xfeedface;
// Fill pattern for deallocated blocks
unsigned int releasedPattern = 0xdeadbeef;

2006-03-27T13:25:00.000+04:00

RPC Lite ?
Recently wished to find easy variant of RPC framework (library, sdk, or other)...
My criteria of search the following:

Lite (don't use any application servers).
Support a remote interface references.
Don't need cardinally reflow a ready to use local interfaces.
Support for Java and C#.

I have tried some found frameworks, but not one of them has not approached... :(

2006-03-17T13:33:00.000+03:00

Service delivery platform for Telecommunications.
An overview of the ready to use platforms.
Part III.

3. Kabira

Company is using third-party J2EE application servers and create own environment for them. Environment contains the service enablers (gateways, API, etc), FT/LB (Fault tolerance / load balancing) extensions and business process management). Supports powerful feature for creation service based MDA (Model Driven Architecture).

Sample architect the service with MDA (in IBM Rational):

Engineering Results

Performance: 1080 TPS on two 2-way SPARC servers with 4 Gb of memory each
Latency: With no load, end-to-end latency was approximately 25 ms. Under load end to end latency was 175 ms.

Development Time: Core development: 16 man months, Additional development to fine tune business processes 6 man months.

2006-03-17T13:31:00.000+03:00

Service delivery platform for Telecommunications.
An overview of the ready to use platforms.
Part II.

2. HP Service Delivery Platform.

HP develops and support own SDP solution, which primary based on J2EE or .NET application server from other company. HP deploy the implementation of API for Parlay, Parlay-X, VXML, ccXML, SS7(??), SIP, SIMPLE, SMPP, MLP, LIF. HP is offer to use development environment from third-party companies for J2EE (for example, Eclipse) and .NET (Microsoft).

Also HP, like IBM, deploys the Ubiquity application server for SIP based applications.

2006-03-17T13:18:00.000+03:00

Service delivery platform for Telecommunications.
An overview of the ready to use platforms.
Part I.

This is part of my analytical report describes application servers and their features. The report is focused for IT technologies for telecom industries.

1. IBM WebSphere.

IBM WebSphere (WebSphere Everyplace Server for Telecom, WebSphere Business Integration).

J2EE application server with implemented API from ETSI/3GPP (Parlay, Parlay-X). Has powerful and more functionality development environment WebSphere Studio and IBM Rational Developer. Also he has built-in facilities for load-balancing services. The application server from IBM supports Business Process Management (BPM) and Business Process Execution Language. Using Rational product lines you mat introduce Business Process Diagrams (BPMN).

For creation services based SIP protocol, IBM offer application server from Ubiquity (www.ubiquitysoftware.com).

The server from Ubiquity use SIP-container based on JAIN SIP API (compliant with JSR 116).

For 3g networks offer the next architecture:

2006-02-14T16:01:00.000+03:00

I am tired... :(
A second day I am reading billions specifications from 3gpp.... :(

2006-02-09T17:38:00.000+03:00

I went to shop and finally bought a ink pen... Yeahh!
Really this action took a lot of time... Time to market! :)
But the ink pen is really cool!

2006-02-08T17:30:00.000+03:00

LL-parser & LR-parser
My colleague has sent a pair useful links about LL & LR parsers...
These technologies were not absolutely clear for me.
http://en.wikipedia.org/wiki/LR_parser
http://en.wikipedia.org/wiki/LL_parser
Long live to Wikipedia !

I have sent to my colleague the link to the book for stop smoke (as reply). :)

2006-02-08T12:11:00.000+03:00

Joke by SUN ? :)
Do you know that the first 4 bytes at any java class file is 0xCA 0xFE 0xBA 0xBE?
CAFE BABE!! :))