Just staring using wavecom M1206 modem to my centos linux, I  just follow common instruction from the net, weird after couple hour my modem still not detected, this first time I use modem on linux. I plug my modem to my server (IBM X3250) check the dmesg and found the modem detected on ttyUSB0 usb [...]

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For my personal note :p drop_caches Writing to this will cause the kernel to drop clean caches, dentries and inodes from memory, causing that memory to become free. To free pagecache: echo 1 > /proc/sys/vm/drop_caches To free dentries and inodes: echo 2 > /proc/sys/vm/drop_caches To free pagecache, dentries and inodes: echo 3 > /proc/sys/vm/drop_caches Source [...]

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Recently I want to increase my maximum file size, I develop my own Codeigniter application, I am using file upload class. Far as I know I just need increase “file_uploads” to desired value I want. I increase the “file_uploads” to 150MB. When I try upload 18MB file use my application it’s just show me a [...]

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inadvertently I added / after index.php on one of my web project and strange it produce some error like this A PHP Error was encountered Severity: Notice Message: Undefined offset: 0 Filename: libraries/Router.php Line Number: 201 A PHP Error was encountered Severity: Notice Message: Undefined offset: 0 Filename: libraries/Router.php Line Number: 207 A PHP Error was encountered Severity: Notice Message: Undefined offset: 0 Filename: libraries/Router.php Line Number: 210 After search I found the solution, it just need to change “uri_protocol’” to PATH_INFO on config.php reference : http://codeigniter.com/forums/viewthread/127502/

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Recently I am disappointed with my IBM x3250 M3 run CentOS linux, the performance is very bad. After investigate I found my SATA drive ( I use two SATA hard drive , 250GB and 500GB) detected by CentOS as IDE drive, as hda and hdb. When I test read and write speed used “hdparam”, the [...]

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Recently I have successfully setup my proxy (CentOS 5.5) and mikrotik 2.9.X with cache HIT no limits. When my RB 1100 came, I move my mikrotik 2.9.x to this new RB 1100. These day I just realized that my cache HIT is limited so my Mikrotik count the cache HIT. On Mikrotik 2.9 we use [...]

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Recently I install asterisk using yum (using asterisk repository provided), at the noon a something happen, I try to use phpMyAdmin then found some error session couldn’t start. Then my other application show same weird thing, it cannot upload file to web directory, it’s never happen before. Finally I know, when on asterisk installation process, [...]

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Finally I have finish install openmeetings on CentOS server with some notice : Use ulimit to make Red5 server start normaly , event it use high performance During this installation I found interesting command for linux , sync; echo 3 > /proc/sys/vm/drop_caches , it will clear RAM cache, if we need to clear linux memcache [...]

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These day, I am trying install Red5 flash server on CentOS 5.x, it’s part of Openmeetings web conference application. When I am try to start Red5 server using red5.sh , the service won’t work, here the log : Running on Linux Starting Red5 Error occurred during initialization of VM Could not reserve enough space for [...]

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When you try to install svn on 64 centos linux you will get some error, perl(URI) is missing. The solution is very simple, download the perl-URI rpm package from address below: http://mirror.centos.org/centos/5/os/i386/CentOS/perl-URI-1.35-3.noarch.rpm Install it manually using rpm -ivh perl-URI-1.35-3.noarch.rpm After it finish, then we can install svn by using this command yum install subversion Yup [...]

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