My Tech notes

Useful linux based live CD's list Bootable Cluster CD http://bccd.cs.uni.edu/ Clusterix http://clusterix.livecd.net/ ClusterKnoppix http://clusterknoppix.sw.be/ dyne:bolic http://www.dynebolic.org/ ParallelKnoppix http://pareto.uab.es/mcreel/ParallelKnoppix/ 3Anoppix http://tavi.debian.org.tw/index.php?page=3Anoppix ABC Linux http://www.abclinuxu.cz 1 Live CD list.

Uploading kernel book, basic concepts. kernelbook.doc

I/O schedulers are time consuming, --> re-orders reads and writes to disk --> minimize disk head movements. TIP If there is no hard disk in embedded system application then -->>Build your kernel with no-op I/O scheduler

This is my plain table Left Cell 1 Right Cell 1, pertains to Left Cell 1 Left Cell 2 Right Cell 2, pertains to Left Cell 2 Left Cell 3 Right Cell 3, pertains to Left Cell 3 Left Cell 4 Right Cell 4, pertains to Left Cell 4

How to increase the ram disk size, one way could be compile the kernel, run $make menuconfig │ -> Device Drivers │ │ -> Block devices │ │ -> RAM disk support (BLK_DEV_RAM [=y]) Default size is 4096KB you can change it as per your requirement, be careful only change this if you know what you are doing.

Linux kernel can be very intimidating and I am still struggling to catchup with the code. I was fascinated by list.h that gives an implementation of a generic linked list merely using macros! :) I was helped through the process management by a colleague - a good place to start. I loved the bit on scheduling and the neat tricks used there. A lot of people wud advise u to join the lkml mailing list but it would be good to know something so that u can understand the exchanges there. kernel newbies is a better place to be. Do it in order 1. get yourself a copy of * Linux Kernel Development by Robert Love *. It is a very good place to start and will briefly discuss code snippets to get you started and clears the concepts very well. 2 start working on * Linux Device Drivers (LDD) by Alessandro Rubini * (available online and helps since u can use while coding) soon after or in parallel. The coding examples in this book are a must!!! 3. Try * Understanding the Linux Kernel by Bovet * - the l...

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