Trainer, Gardener, Self-employed
FUDCon was sheduled on 4-6 Nov’11 in COEP, Pune. Because of my other commitments I did not get the chance to attend keynotes or closing talks but I watched some of them online. I did get chance to attend few sessions which were scheduled after my talks. I subumitted two talks and both were got selected. 1. … Read more
Embedded Nirvana is an initiative for hands-on knowledge sharing for Linux OS on Embedded Devices. Today we are having out event for COEP students http://embeddednirvana.org/about-envent/. I also gave a talk on Linux Kernel Compilation. The commands are very specific for Fedora. Before getting into kernel compilation I would like to talk about few things which … Read more
I gave a talk on Ftrace in Fedora Mini-Conf at FOSS.in’10. The slides are at https://fedoraproject.org/wiki/File:Fedora_Ftrace.pdf I started my presentation with an example. I setup function_ftrace as current_tracer and set the trace filter for all the ext3 functions and started the tracing: [sourcecode language=”text” gutter=”false”] $ echo function_ftrace > /sys/kernel/debug/tracing/current_tracer $ echo ext3* > /sys/kernel/debug/tracing/set_ftrace_filter … Read more
I am writing kernel debugging article for Linux For You . I started with SystemTap and will writing on ftrace, kdb , kgdb crash etc. You can download the part-I of SytemTap article:- http://wp.neependra.net/kernel/Systemtap-I.pdf Part-II of SystemTap article is published this month and will be uploading the softcopy next month. update. Uploaded the Part-II as … Read more
Jiffies : The jiffies variable holds the number of times the system timer popped since the system booted. HZ: The number of timer ticks per second, is contained in the kernel variable HZ.The kernel increments jiffies, HZ times every secondJiffy: On a kernel with a HZ value of 100, a “jiffy” is a 10-millisecond duration, … Read more