On 17/01/18 07:35, Thomas Kim wrote:
Dear Huber,
I think that there is limitation using RTEMS profiling feature, too.
There are always limitations.
Instead of this method, I am using hardware assitance method using
GPIO signal as like below;
void bsp_interrupt_dispatch(void)
{
volatile gic_cpuif *cpuif = GIC_CPUIF;
uint32_t icciar = cpuif->icciar;
rtems_vector_number vector = GIC_CPUIF_ICCIAR_ACKINTID_GET(icciar);
rtems_vector_number spurious = 1023;
if (vector != spurious) {
uint32_t psr = _ARMV4_Status_irq_enable();
gpio01_19_high(); /* Signal High */
bsp_interrupt_handler_dispatch(vector);
gpio01_19_low(); /* Signal Low */
_ARMV4_Status_restore(psr);
cpuif->icceoir = icciar;
}
}
When I check GPIO signal using digital scope, I can check average duty
cycle.
Do you think that it is good method ?
It depends on your needs.
There is additional question.
I think that CPU time percentage using "cpuuse" is CPU time consuming
value except interrupt handler consuming time.
Is it correct ?
No, the interrupt processing time counts as execution time of the
executing thread.
Best Regards,
Thomas
2018-01-12 15:03 GMT+09:00 Sebastian Huber
<sebastian.hu...@embedded-brains.de
<mailto:sebastian.hu...@embedded-brains.de>>:
On 12/01/18 02:38, Thomas Kim wrote:
Dear Sir,
As I checked until now, thread(task, pthread) cpu load
analysis method using "cpuuse" is perfect !
At this time, I am doing multiple device interrupt hander
stress testing. but, there is not CPU load anaysis method
about multiple device interrupt handler.
Is there any method for checking CPU load about multiple
device interrupt handlers ?
The is limited support for this. You can try to use enable the
profiling option:
cpukit/sapi/include/rtems/profiling.h
For interrupt profiling a BSP support is necessary. I think it is
only implemented on ARM, PowerPC and SPARC currently.
The RTEMS trace linker is also an option.
--
Sebastian Huber, embedded brains GmbH
Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone : +49 89 189 47 41-16
Fax : +49 89 189 47 41-09
E-Mail : sebastian.hu...@embedded-brains.de
<mailto:sebastian.hu...@embedded-brains.de>
PGP : Public key available on request.
Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
--
Sebastian Huber, embedded brains GmbH
Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone : +49 89 189 47 41-16
Fax : +49 89 189 47 41-09
E-Mail : sebastian.hu...@embedded-brains.de
PGP : Public key available on request.
Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
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