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The Advancement of technology had entered into nanometer age. search in google define:Blue-ray will get wiki pages here is summary of it. Blu-ray Disc (also known as Blu-ray or BD) is an optical disc storage medium designed to supersede the standard DVD format. Its main uses are for storing PlayStation 3 games, high-definition video, and data storage, with up to 50 GB per disc. This is quite impressive, The disc has the same physical dimensions as standard DVDs and CDs. Why Blu-ray disc stores 50GB on same size of DVD/CD? Well here is advancement of laser technology, thanks to Shuji Nakamura for his invention on blue laser, The name Blu-ray Disc derives from the blue-violet laser used to read the disc. While a standard DVD uses a 650 nanometre red laser, Blu-ray uses a shorter wavelength, a 405 nm blue-violet laser, and allows for almost six times more data storage than on a DVD. check out about Blu-ray Movies - Everything about Blu-ray movies and releases .at http://www.blu-ra...

Get HyperSCSI for SAN - Storage Area Network SCSI (Small Computer Systems Interface) family of protocols. HyperSCSI can allow one to connect to and use SCSI and SCSI-based devices (like IDE, USB, Fibre Channel) over a network as if it was directly attached locally. Why HyperSCSI over iSCSI? The main advantage of HSCSI compared to iSCSI is especially a lower network load as well as an end system (server and client) load. TCP/IP SAN performance is still not good enough without hardware acceleration FC-based SANs cannot do Storage Wide-Area Networks Fully functional software implementation of both client and server so HSCSI can be used for a solution built on commonly available hardware, no expensive and specialized hardware is needed. Therefore, HSCSI can be used for building small and cheap SANs. HSCSI main disadvantage is this protocol has no official standard like iSCSI nd so it is unsupported in any way by manufacturers developing hardware data storage solutions. Two modes of oper...

SCALA programming language and Secret behind Twitter's growth Scala is a general purpose programming language designed to express common programming patterns in a concise, elegant, and type-safe way. It smoothly integrates features of object-oriented and functional languages, enabling Java and other programmers to be more productive. Code sizes are typically reduced by a factor of two to three when compared to an equivalent Java application. http://www.scala-lang.org/ Introducing Scala Scala is a general purpose programming language designed to express common programming patterns in a concise, elegant, and type-safe way. It smoothly integrates features of object-oriented and functional languages, enabling Java and other programmers to be more productive. Code sizes are typically reduced by a factor of two to three when compared to an equivalent Java application. Programming Scala book Programming in Scala Some books A comprehensive step-by-step guide by Martin Odersky, Lex Spoon,...

Andhra Pradesh State Board SSC Results 2009 announced today (27-May-09) by 10.45 am. There is lot of rush for those sites, Results will be available on the following sites: I have tried to give direct links for results, good luck to students. Results direct links from manabadi ssc SSC results on SMS from manabadi results.manabadi.co.in Indiaresults Bharat student Results direct links from results.sakshi.com AP SSC REGULAR results 09 results.sakshi.com/textfile/R_PRES91.TXT AP SSC PRIVATE Results results.sakshi.com/textfile/P_PRES9.txt AP OSSC REGULAR results results.sakshi.com/textfile/OS_PRES92.txt AP OSSC PRIVATE results results.sakshi.com/textfile/OS_PRES92.txt Sakshi Results Sakshi Results. Ceep 2009 Results · Inter Second Year 2009 Results · Inter First Year 2009 Results. results.sakshi.com Results direct links from vidyavision.com Andhra Pradesh SSC 2009 Results (General) Andhra Pradesh SSC 2009 Results (Vocational) Andhra Pradesh Examination Results- Vidyavision .com ...

How to Access NAS Box From Windows Vista Home Edition? Access NAS box windows vista (Ultimate editions), If you NAS box contains SMBD/ SAMBA version less than or equals 2.2.12 Steps to access NAS box from Windows Vista Home Edition 1. In the Windows taskbar, click Start and select Run. In Run window type “regedit” and press OK. 2. This will open User Account control window, here click continue. 3. Double click on the “HKEY_LOCAL_MACHINE” , “SYSTEM”, “Current Control Set” and “Control”. 4. Then click on “Lsa” then you will get some parameters in the right windowpane. 5. Find for “LMCompatibilityLevel” and double click on this item. 6. In the edit window change the “Value data” to 1 from 3. 7. Press OK then Close the Registry Editor (regedit). your Vista PC ready to access the NAS box.

Invoking user mode application from kernel modules, yes its possible with help of CALL_USERMODEHELPER . With the following kernel API, we can invoke user mode application from Kernel modules/threads. int call_usermodehelper (char * path, char ** argv, char ** envp, int wait); path: pathname for the application. argv: null-terminated argument list. envp: null-terminated environment list. wait: wait for application to finish and return status. Example: Kernel Module: #include #include char name[]="user_program"; static int init_function(void) { int ret; char *argv[] = {name, "hello", "world", NULL }; static char *envp[] = { "HOME=/", "TERM=linux", "PATH=/sbin:/usr/sbin:/bin:/usr/bin", NULL }; printk("We r in init_function\n"); ret= call_usermodehelper(name, argv, envp, 1); if ( ret #include int...

How to use ctags command in linux? explained in simple steps. CTAGS is a good utility for source code browsing in Linux through vi editor. To use ctags , at the source code directory enter # ctags -uR * This will create tags file in the source code. Open a file in that source code using vi editor & set the tags file for that file using " ESC + :set tags=tags" ( path of tags file . if it is at different level then give the entire path like ../tags or ../../tags ). Once the tag file is set for that file, then you can look the at function definitions, variable declarations, .......... by placing the cursor on that function call or variable & press "CRTL + }" and for coming back to same place press "CTRL + t" key sequence. Follow CTAGS documentation for more insight.

Kernel Memory Layout on ARM Linux Russell King November 17, 2005 (2.6.15) This document describes the virtual memory layout which the Linux kernel uses for ARM processors. It indicates which regions are free for platforms to use, and which are used by generic code. The ARM CPU is capable of addressing a maximum of 4GB virtual memory space, and this must be shared between user space processes, the kernel, and hardware devices. As the ARM architecture matures, it becomes necessary to reserve certain regions of VM space for use for new facilities; therefore this document may reserve more VM space over time. Start End Use -------------------------------------------------------------------------- ffff8000 ffffffff copy_user_page / clear_user_page use. For SA11xx and Xscale, this is used to setup a minicache mapping. ffff1000 ffff7fff Reserved. Platforms must not use this address range. ffff0000 ffff0fff CPU vector page. The CPU vectors are mapped here if the CPU supports...

Working on more than one file by multiple developers, need to know CVS commands to control the check in and check out, CVS admin -l command is useful. cvs admin -l This will lock the present cvs revision of the file. Otherthan the one who holds the lock no one else can commit the file. CVS check-in will fail. cvs admin -u This will unlock the file. Now another user can commit the file or can acquire the lock. If one developer holds lock on the entire directory then others cannot modify any existing files but they can add new files.

Generating Document using doxygen In simple Steps. 1) In every (.c or .h) file put this comment after includes. --------------------------------------------------------------------- /** \file filename.ext * \brief some notes about this file. * * A more extensive description of this file. */ Example: /** \file function.h * \brief This file contains prototypes for functions defined in function.c. * * This file contains prototypes for functions defined in function.c. * */ NOTE: Period '.' is necessary after \brief sentence. 2) Before every function put this comment: --------------------------------------------------- /** \brief A brief description of my_function(). * * A more extensive description of my_function(). * * \param aParameter A brief description of aParameter. * \param bParameter B brief description of bParameter. * \return A brief description of what myProcedure() returns. */ Example: /** \brief get position of field in configfile. * * This funct...

The Proc entries to change the timeout values for TCP keep alive and TCP retransmissions. 1) TCP Keep-Alive: A) tcp_keepalive_time : The number of seconds a connection needs to be idle before TCP begins sending out keep-alive probes. Keep-alives are only sent when the SO_KEEPALIVE socket option is enabled. The default value is 7200 seconds (2 hours). This default value can be changed by over writing the proc entry. example: echo 20 > /proc/sys/net/ipv4/tcp_keepalive_time . B) tcp_keepalive_probes: The maximum number of TCP keep-alive probes to send before giving up and killing the connection if no response is obtained from the other end. The default value is 9. ...

Packets can be sent out immediately with out a delay if it falls under below reasons and without violation of Nagle’s rules Ø It is full sized. Ø Or it contains FIN. (Already checked by caller) Ø Or TCP_NODELAY was set. Ø Or TCP_CORK is not set, and all sent packets are ACKed. With Minshall's modification: all sent small packets are ACKed. The reason for getting less Network performance In Linux-2.6.20.9 is as follows. If we have TSO enabled and if we an 8KB of data to be transmitted, In this case what the TCP/IP stack does is as follows. STEP1: 8KB of data will be copied from Application to the Kernel Buffer STEP2: Before forming the TCP segment Nagle’s test will be done, this will be done only if TSO_SEGS is equal to 1. This variable tells the HW to how many chunks this 8kB has to be divided while sending it out on the wire. For Example: IF 8KB of data is to be transmitted and if your MSS is 1448 then your tso_segs...

Wondered how you can politely and anonymously ask your friends to stop sending spam, well stopForwarding.Us enables you to send politely and anonymous message to your friend on behalf of you, Below is example mail message which sends polite mail. One of your friends has sent you this message from StopForwarding.Us, a website that allows individuals to anonymously email their friends and politely ask that they stop the habit of sending forwarded emails or FWDs. Please do not forward chain letters, urban myths presented as truth, potentially offensive jokes, videos or photos without being asked or first receiving permission. If you find something that is funny and it is clean and you genuinely think the recipient will enjoy it then foward it to that person only (not in an email blast to all your friends and family) and include a personal note about why you enjoyed it and why you think they will too. Avoid sending forwards to friends or relatives that you've grown distant with. I...