Boot chart for MilaX 0.5

Boot charts for 2008.11 and snv101

Bootchart is a great tool for performance analysis and visualization of the Linux boot process. Eric Schrock and Dan Price worked on a Bootchart port using DTrace but I can't find any recipes on their blogs.
I've viewed bootchart source files for two days and by means of several hacks managed to receive boot charts for OpenSolaris. First of all I need to get uptime values in bootchart format (this is /proc/uptime content on linux). I've written the small utility (upt.c):

#include <sys/times.h>
#include <limits.h>
#include <dat/dat_platform_specific.h>

main {
struct tms  ts;
clock_t t = times(&ts);
                                                          
//we need jiffies from uptime value for bootchart
printf("%u\n",(unsigned long) ((DAT_UINT64) t*100 /CLK_TCK));                                                                    
}

Now the main script for logging (/boot/bootchartd):

#!/usr/bin/bash                                                                                         
                                                                                                  
PATH="/sbin:/bin:/usr/sbin:/usr/bin:/usr/gnu/bin:$PATH"                                                 
                                                                                                  
# mounting dir for logging                                                                              
mount -F tmpfs -o size=32m swap /var/log/bootchart                                                                  
                                                                                                  
# start time hack for java parser                                                                       
echo "001" > /var/log/bootchart/ps.log                                                                  
echo "  PID  PPID S %CPU COMMAND" >> /var/log/bootchart/ps.log                                          
echo "    1     0 S  0.0 kernel" >> /var/log/bootchart/ps.log                                           
echo  >> /var/log/bootchart/ps.log                                                                      
                                                                                                  
while true; do                                                                                          
# uptime jiffies                                                                          
uptime=`/sbin/upt`                                                                                  
echo $uptime                                                                                        
# Log the command output and removing pid 0 for preventing "No processes found" error                                              
eval "ps -e -o pid,ppid,s,pcpu,comm"|grep -v sched                                                  
echo                                                                                                
/usr/gnu/bin/sleep 0.2                                                                              
done  >> /var/log/bootchart/ps.log      

Let’s create directory /var/log/bootchart:

mkdir /var/log/bootchart

Next I move /sbin/init to /bin:

mv /sbin/init /bin

and create a new init:

cat /sbin/init

#!/bin/sh

/boot/bootchartd &
exec /bin/init

Now it's possible to reboot. After booting I write a header file:

echo "title = Boot chart for $( hostname | sed q ) ($( date ))" > /var/log/bootchart/header             
echo "system.uname = $( uname -srvm | sed q )" >> /var/log/bootchart/header                             
if [ -f /etc/release ]; then                                                                            
echo "system.release = $( sed q /etc/release )" >> /var/log/bootchart/header                        
else                                                                                                    
echo "system.release = $( sed 's/\\.//g;q' /etc/issue )" >> /var/log/bootchart/header               
fi                                                                                                      

and create boot chart:

java -jar bootchart.jar

Parsing /var/log/bootchart
Wrote image: ./bootchart.png

This was the first boot chart created for OpenSolaris 2008.11 (Intel CPU 2.26GHz 512mb RAM). No disk and cpu utilization information yet:



Here the boot chart for snv101: