On 14 November 2012 23:57, Andy Doan <andy.doan@linaro.org> wrote:
On 11/14/2012 12:48 AM, YongQin Liu wrote:
Hi, Andy & Michael


About the problem that the telnet process consumes CPU(bug1034218
<https://bugs.launchpad.net/linaro-android/+bug/1034218>),

For now I tried two ways to verify it:
1. Run the CTS test via submitting a lava-job
     In this way, the process that consumes CPU is telnet
2. Run the CTS test via command line "lava-android-test run cts"
     In this way, there is no process that consumes CPU to 100%,
     In the meanwhile, I also opened the telnet session.

So I guess the problem is the way we calling the telnet command in
lava-dispatcher.
 From my investigation, it's the select syscall in telnet that consumes CPU,
So I doubt if there is some place in lava-dispatcher that reads the
ouput of telnet in a loop without sleep in the loop.
but I did not find such place in lava-dispatcher.

How do you think about it?

Do you get 100% CPU when you run the job by hand, ie "lava-dispatch jobfile.json"?
Will try to run "lava-dispatch jobfile.json" from command line tomorrow.

--
Thanks,
Yongqin Liu
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