Perf Timechart for long duration ~4min

Perf Timechart for long duration ~4min

[Abhishek Karoliya]

Hi All,



I am profiling the boot time for a ppc system (WR Linux based on 2.6.32 
with PREEMPT RT)from powerup till the system is usable. I am running perf 
timechart as the first script by init to start recording 

(perf timechart record -a -F 125 -m1024 ) and sending a kill sig 2 when 
done. My problem is I can't get perf to collect data for more than 5secs 
(version 0.0.2.PERF) or 12sec(version 3.0.4). The .svg plotted only for 
this duration and perf trace lists that there are enteries beyond this 
duration.



I have been breaking my head for some time now but heading nowhere, so 
asking for help. If you can point me how can I get the timechart to record 
and display for longer duration (around 4min in my case), that would be 
very helpful.



Thanks!

Abhi 

Re: Perf Timechart for long duration ~4min

[Abhishek Karoliya]

Abhishek Karoliya <abhikaro <at> gmail.com> writes:







> My problem is I can't get perf to collect data for more than 5secs 



> (version 0.0.2.PERF) or 12sec(version 3.0.4). The .svg plotted only for 



> this duration and perf trace lists that there are enteries beyond this 



> duration.







Sorry for the typo, I perf trace lists that there are *no* entries beyond 

the 5/12 seconds.