* interrupt latency
@ 2019-07-29 17:46 Muni Sekhar
0 siblings, 0 replies; only message in thread
From: Muni Sekhar @ 2019-07-29 17:46 UTC (permalink / raw)
To: kernelnewbies
Hi All,
I used the Linux kernel’s ‘Ftrace’ framework for tracing the interrupt
latencies.
Sometimes I noticed a delay(time between do_IRQ() to start of ISR())
in start of ISR(interrupt service routine) to execute , some other
times I noticed ISR execution time(entering and exiting a function) is
very high.
I’d like to know in which scenarios, ISR gets executed lately?
In which scenarios, ISR execution time is very high?
Can someone please clarify me on this.
--
Thanks,
Sekhar
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2019-07-29 17:47 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-07-29 17:46 interrupt latency Muni Sekhar
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).