Hello,
I'm wondering if there is a way to get thread CPU utilization info for Fiasco.OC kernel in Genode.
Best regards, Jilong
-- Jilong Kuang Ph.D. | Samsung Research America - Silicon Valley (SRA-SV)
Senior Research Engineer, Computer Science Lab t: 408-544-2705 c: 951-318-2995 jilong.kuang@...60...mailto:jilong.kuang@...60...
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Hi,
On 26.11.2013 02:32, Jilong Kuang - SISA wrote:
I’m wondering if there is a way to get thread CPU utilization info for Fiasco.OC kernel in Genode.
we addressed this to some degree already some time ago in an experimental way (see github issue 813 [0], branches issue_813 and issue_813_fancy of my Genode repository).
With the commits you can collect on Fiasoc.OC (x86 and ARM) for each thread and on Nova for each Scheduling Context the elapsed runtime. Additionally the Cpu idle times can be requested. Based on that you may calculate Cpu utilization times.
The commits contain an example run script cpu_monitor.run for easy testing. The issue_813_fancy branch contains and adapted demo.run script so that in launchpad the Cpu utilization of the started process are shown.
Regards,
Alex.
[0] https://github.com/genodelabs/genode/issues/813
Best regards,
Jilong
-- *Jilong Kuang Ph.D. | Samsung Research America – Silicon Valley (SRA-SV)*
Senior Research Engineer, Computer Science Lab t: 408-544-2705 c: 951-318-2995 jilong.kuang@...60... mailto:jilong.kuang@...60...
*P*lease consider the environment before printing this email.
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Hi Jilong,
I’m wondering if there is a way to get thread CPU utilization info for Fiasco.OC kernel in Genode.
if you just want to know the CPU utilization as a tool for guiding optimization efforts, you may find the kernel debugger useful. The thread info display (using the "lp" command, then selecting a thread via cursor keys and pressing return) shows the duration the thread was executed, e.g.:
cpu time: 215.000 ms
To make the retrieval of the consumed time per thread more convenient, there is the following patch by Christian Prochaska. It displays the CPU time directly in the list of present threads ("lp"):
https://github.com/cproc/foc/commit/9edd0eeacdbd7c659c4d8595bf273f16c397d353
Cheers Norman
-
Alexander Boettcher -
Jilong Kuang - SISA -
Norman Feske