rv's techblog: some kind of blog

> ::lgrp   
   LGRPID             ADDR           PARENT         PLATHAND      #CPU      CPUS
        0 fffffffffbc1f610                0          DEFAULT         2      0-1
> fffffffffbc1f610::print
{
    lgrp_id = 0
    lgrp_latency = 0
    lgrp_plathand = 0xbabecafe
    lgrp_parent = 0
    lgrp_reserved1 = 0
    lgrp_childcnt = 0
    lgrp_children = 0
    lgrp_leaves = 0x1
    lgrp_set = [ 0x1, 0x1 ]
    lgrp_mnodes = 0x1
    lgrp_nmnodes = 0x1
    lgrp_reserved2 = 0
    lgrp_cpu = cpus
    lgrp_cpucnt = 0x2
    lgrp_kstat = 0xfffffffec0440330
}
> fffffffffbc1f610::walk lgrp_cpulist
fffffffffbc26b30
fffffffec113b800
> fffffffffbc26b30
> fffffffffbc26b30::print 
[
    {
        cpu_id = 0
        cpu_seqid = 0
        cpu_flags = 0x1b
        cpu_self = cpus
        cpu_thread = 0xfffffffec6d894a0
        cpu_idle_thread = 0xffffff0002005c80
        cpu_pause_thread = 0xffffff00022abc80
        cpu_lwp = 0xfffffffec56e18b0
        cpu_fpowner = 0
        cpu_part = cp_default
        ...

Last Thursday I gave a talk about the kernel at my university, about 20 people showed up.
I talked about the scheduler, dispatcher and virtual memory. I'm still working on the slide deck, it's an overview of those systems with some of the structures that represent things like processes, threads, cpus.

I'm trying to show it's not such a 'black box' - like some people might think - by pointing out how some things are implemented. My idea is to get more people interested in contributing to the project. Check out the slides and send me some feedback. I'm all in favor of improving it so any comment is appreciated.
You can get the BR-Portuguese version at our OSUGs website.

Here are some photos..

Then yesterday (Saturday) I gave pretty much the same talk at a kick ass event organized by the TcheLinux user group. I'm really glad those guys invited us there. It's just amazing to see a positive and open attitude towards technology, specifically open source technology. More pictures..

I'll tell you this, with the great work they are doing, I won't be surprised to see their events grow to national or even international size. We had a blast. I hope everyone who attended our talks left feeling they didn't wake up early on Sat for nothing.

We handed out around 30 'Intro to OSs with OpenSolaris' books and SXDE DVDs between the two events. Good to see our OSUG growing.

I spent some portion of this week preparing slides for an OpenSolaris Kernel talk I gave yesterday at campus and that I'm repeating Saturday at a TcheLinux event. I'll post some pictures and the slide deck after the Saturday session.

The last three or four slides are about building/booting the kernel and I thought it might be interesting to post the steps here. This is for x86 but the SPARC version is just about the same.

Downloading the goods:
1. $hg clone ssh://anon@hg.opensolaris.org/hg/onnv/onnv-gate my-copy

Here's a tip to allow compression. It should decrease your download time:
Edit your .ssh/config file and add
Host *opensolaris.org
Compression yes