Driver Speed Up 8300 Ubuntu
Ronald Hariyanto sudah menuliskan cara install driver Speed Up 8300 U, sebuah modem koneksi 3G yang bisa dipakai untuk koneksi IM 2, di Ubuntu. Sayangnya, dia tidak memberikan alamat site tempat download driver itu. Aku sudah temukan tempat yang dimaksudkannya, yaitu di 4shared.com, sebuah site penyedia jasa filesharing. Ini linknya.
How to fix an unresponsive Linux
Via linuxtoday.com, I found this article.
But it can be hard to memorize.
what’s the magic? Well if you are ever stuck with an unresponsive system try
Alt+PrintScreen+r+s+e+i+u+b.
Pheew! So how many hands do you need to do this? Or should you use your toes? Well, actually you only press and hold Alt and PrintScreen together, the other keys are pressed one at a time and then released. There is quite a lot happening when you do this.
Confirming Linux FS atomicity
Today I did an experiment. I ssh-ed to another machine. Then from my own machine, I copy a big ISO file from it using scp.While the transfer was still in-progress, I moved that file at source machine to another folder.
The transfer still going to completion, yet ls at source machine didn’t list it anymore. I confirmed using md5sum that both still are identical.
I didn’t try to rm it though. Quite interesting if it passes.
Maybe some other time I should try to see whether Linux implements COW (copy-on-write) semantic by writing to a file while in transfer. They should differ at the end.
CPU Scaling in Debian
CPU scaling problem in my debian based laptop makes me confused. It stays in 1.8 GHz and won’t scale down.
After searching using “throttling ” keyword and bumped here and there, I found that I have to add acpi-cpufreq module in /etc/modules. Hope this helps you.
Compiling rubinius c++ VM in Debian lenny
I have a habit to use testing branch of debian. Currently it’s Lenny.
The problem is, gcc package now is version 4.3. The g++ of that version is stricter (being transitioning to C++-0x), emitting errors when compiling rubinius c++ vm. The solution (workaround, actually) is installing the 4.2 versions, then replacing the gcc and g++ symlinks (prvided by gcc and g++ packages, respectively) to point to gcc-4.2 and g++-4.2, respectively. Yes, it’s a hack.
CPU frequency scaling problem
CPU scaling problem in my debian based laptop makes me confused. It stays in 1.8 GHz and won’t scale down.
After searching using “throttling ” keyword and bumped here and there, I found that I have to add acpi-cpufreq module in /etc/modules. Hope this helps you.
MonetDB for CentOS 5
Today I installed MonetDB on CentOS 5. I built it from *.src.rpm files. I still had the binary. Anyone wants to host it ?
First touch with LVM
Today, I’m ordered to install Centos 5 at a server. It has four disks, 250 G each. There I had my first contact with LVM (Logical Volume Manager). Firstly I’m a bit confused. Plus, I was trying to add RAID in the mix. How come total capacity become less then 300G?
At first, I thought it was because of RAID. Actually no. It’s because I chose too small extent size. Extent size is like block size (reminds me to FAT16 – FAT32 block size issue). When I chose larger size (32 M ?), it gives me almost 800G for RAID 5. Without RAID, it gives me almost 1 TB.
Well, another day, another knowledge. All praise to the One that owns my life.
Using R2D2 projector to maintain network
Gizmodo showed that you can useR2D2 to monitor network. Well, actually this R2D2 actually is a DVD projector that controlled to display message from Nagios when a network problem occurs. Very geeky.
CPU scaling problem
CPU scaling problem in my debian based laptop makes me confused. It stays in 1.8 GHz and won’t scale down.
After searching using “throttling ” keyword and bumped here and there, I found that I have to add acpi-cpufreq module in /etc/modules. Hope this helps you.
