Za početak postavimo konfiguraciju:

If you don’t have time to change an existing system, than at least, make sure that you use a USB stick for your swap space. It increases performance because

1. swap is on a different device. It does not block the access to your harddisk to operate.
2. swap performance is much faster on USB stick.

I have a SanDisk 8G as swap space. My machine is doing swaps 200 times faster!

You must have heard that USB sticks have limited writes. True. You’ll replacing your $5 swap stick every 6 months.

Create a partition as you normally would. Then format it with mkfs.swap

Normally you don’t create partitions? Then simply install (apt-get) and use qtparted to create your partition. Let’s say you created partition sdb1. Then execute:

To see the uuid of your swap, execute

Mine reads, “dbceaa30-73cc-45a0-9b11-dade7131d192″. So go to your /etc/fstab (sudo kate /etc/fstab) and add the line:

Also comment out the other line which specifies the swap partition on your hard disk. You don’t need it anymore. In case you are keeping it pri=5 above makes usb to take over swapping.

Enable the new swap space

You can see the current swap configuration of your machine

When my swap went USB, I found out that I could launch around virtual machines for testing purposes and live them around freely. With less concern. Ubuntu has a “swappiness” setting. When it’s 100, it will swap out any idle process ASAP and use the freed memory for data caches. So with a fast swap space, you can increase the storage cache memory to increase the performance of the computer once more. How useful this trick depends on how CPU intensive your processes are. But in general, things are just idling around. So give the memory to cache and get better harddisk performance.

The default value of swappiness is 60. You can experiment values between 60 and 100 to get a better result depending on your CPU usage ratio.

http://conceptspace.wikidot.com/blog:20

Testiranje swap-a na USB-u :: Aleksandar Gvozden Info

C:\Users\%USER%\AppData\Roaming\Microsoft\Network\Connections\Pbk\rasphone.pbk

Fajl je običan tekst koji se može editovati. Struktura je ista kao i kod prethodnih verzija vindouza, samo što je lokacija fajla promenjena.

Ukoliko koristite XP ova lokacija je:

C:\Documents and Settings\All Users\Application Data\Microsoft\Network\Connections\Pbk\rasphone.pbk

Kopiranje VPN konekcije Windows 7 :: Aleksandar Gvozden Info

Integrate Google Web Font selection into your apps

By Jeremie Lenfant-Engelmann, Google Web Fonts Engineer

We’ve received lots of requests from developers for a dynamic feed of the most recent web fonts offered via Google Web Fonts. Such a feed would ensure that you can incorporate Google Web Fonts into applications and menus dynamically, without the need to hardcode any URLs. The benefits of this approach are clear. As Google Web Fonts continues to add fonts, these fonts can become immediately available within your applications and sites.

To address this need, we’ve built the Google Web Fonts Developer API, which provides a list of fonts offered via Google Web Fonts. Results can be sorted by alpha, date added, popularity, number of styles available, and trending (which is a measure of fonts growing rapidly in usage). Check out the documentation to get started.

Some developers have helped us test this new API over the last few months, and the results are already public. Take a look at TypeDNA’s photoshop plugin as well as Faviconist, an app that makes generating favicons as simple as can be, and Google Web Fonts Families, a list of Google Web Fonts that have more than one style.

http://googlecode.blogspot.com/2011/09/integrate-google-web-font-selection.html

Koristite Gugl fontove u svojim aplikacijama :: Aleksandar Gvozden Info

Module Pattern

//Single Global Variable "Module"
var Module = ( function ( ) {
    var privateVariable = "some value";
    var privateMethod = function ( ) {
        //do something.
    }
    //returning one anonymous object that will expose public methods.
    return {
        publicMethod : function ( ) {
            //this method can access its private variable and method
            //by using the principle of closure.
            alert(privateVariable);
            privateMethod( );
        }
    }
})( );

Primer za Module Pattern

//One Global object exposed.
var SearchEngine = (function ( ) {
    //Private Method.
    var luckyAlgo = function ( ){
        //create one random number.
        return Math.floor(Math.random()*11);
    }
    //Returning the object
    return {
        //Public method.
        getYourLuckyNumber : function ( ){
            //Has access to its private method because of closure.
            return luckyAlgo();
        }
    }
} ) ( );//Self executing method.

Detaljnije pročitajte ovde

JavaScript Module Pattern :: Aleksandar Gvozden Info

Last week, Linux kernel father Linus Torvalds announced the release of version 3.0 of the Linux Kernel. This release does not introduce any binary incompatibility neither major changes.

Virtualization.info already covered the 3.0 release with regards to the integration of both KVM and Xen in the mainline tree of the kernel sources.

For Xen, this release means no more patches to the Linux kernel in order to make Linux virtual machines run as guests. In fact, Xen is a Type-1 hypervisor, so hosted operating systems need to have proper support built-in to run smoothly on virtualized hardware. Until now, a substantial Linux kernel patch had to be applied in order to add this support in the linux guest.

KVM, instead, is a Type-2 hypervisor, which runs itself on top of and operating system.

A full list of Xen related changes in the Linux kernel can be found here on the Xen wiki.

http://virtualization.info

Linux Kernel 3.0 is out (with KVM and Xen included) :: Aleksandar Gvozden Info

http://tips-linux.net/en/linux-ubuntu/linux-distribution/install-ubuntu

1 Theme Windows 7

Download Here

Extract and execute

$ ./GUIInstall.sh

2 Software

• Install Office 2007 with CrossOver
• Nero 4 For linux
• Adobe reader
• Skype
• Google chrome
• Ares for linux
• Fireworks CS3

3 Enable windows button

Press ALT+F2

gconftool-2 –set /apps/metacity/global_keybindings/panel_main_menu –type string “Super_L”

Now you can lauch the main menu with the windows button

If you really miss windows install a virus XD. After all this configurations your linux will be like this:

Configure linux for windows users :: Aleksandar Gvozden Info

Prvi sajt koji sam lansirao u sopstvenoj režiji (ne računam one koji su radili na internim mrežama, makar one bile i velike) jeste Aleksinac.net. U vreme kada sam ga startovao internet slika o ovom gradu je bila očajna. Nakon ovih godina mogu biti zadovoljan postignutim.

Detaljnije

Aleksinac.Net – 5 godina kasnije :: Aleksandar Gvozden Info

apache port 80 already in use

problem je zbog nepostojećeg osnovnog-roditeljskog (parent) procesa apači servera. U slučaju problema sa konfigurisanjem servera (najverovatnije zbog memorije) prvo će pući osnovni proces, a zatim jedan po jedan i ostali (child) procesi sve do momenta kada ne ostane ni jedan. Napomena – tekst se odnosi na linuks servere, tako da eliminišemo desktop probleme tipa: skajp je zauzeo port 80 i slično.

Da bi ste obezbedili persistentnost veb servera potrebno je formirati kron koji će osvežiti apači procese. Naravno, ovo je samo privremeno rešenje, funkcionalno rešenje jeste ispitivanje apači intalacije i konfiguracije.

najjednostavnija komanda za ovako nešto jeste:

killall -9 httpd && service httpd start

httpd je servisi kod RPM zasnovanih distrbucija, za debian-based koristite apache2.

alternativa ovoj komandi jeste

ps -e | grep httpd | awk ‘{print $1}’ | xargs -i kill -9 {} && /etc/init.d/httpd start

Ovako nešto se može ubaciti u kron, zavisno od broja pucanja procesa, na nedelju dana.

Ponavljam, ovo je privremeno rešenje, pokušajte da naštelujete vaš server. Proverite MPM (Multi-Process Modules) i ostale parametre koji kontrolišu broj procesa.

Problem sa nedostajućim “apache parent” procesom :: Aleksandar Gvozden Info

mkdir -p /var/opt/xen/iso_import

Then, create the ISO store like this

xe sr-create name-label=”Local ISO” type=iso device-config:location=/var/opt/xen/iso_import/ device-config:legacy_mode=true content-type=iso

—

If You want to install Debian Lenny, as defined VM, maybe is better to use Remote URL:

http://ftp.de.debian.org/debian/

XenServer – Adding a local Iso Storage :: Aleksandar Gvozden Info

Međutim, Institut za istraživanje interakcija nam nudi drugačiji interfejs. Ovim sajtom se upravlja gestikulacijom mišem, dakle pokretima ruke…

Pogledajete: dontclick.it

Interfejs bez kliktanja mišem :: Aleksandar Gvozden Info