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SubjectRe: [PATCH v3 0/6] clocksource: rework Atmel TCB timer driver
Date
Hello Daniel,

Am Dienstag, 27. März 2018, 13:30:22 CEST schrieb Daniel Lezcano:
> Can you can give a rough amount for the irq rate on the timer ?

I used itop [1] now to get a rough estimate. First with kernel v4.14.29-rt25
(fully preempt RT):

INT NAME RATE MAX
19 [ vel tc_clkevt] 397 Ints/s (max: 432)
26 [ vel eth0] 4 Ints/s (max: 38)

Next test with kernel v4.15.13 gives (slightly slower, but non-RT):

INT NAME RATE MAX
19 [ vel tc_clkevt] 248 Ints/s (max: 273)
26 [ vel eth0] 4 Ints/s (max: 11)

With kernel v4.16-rc7 plus this patch series and tcb as clocksource:

INT NAME RATE MAX
17 [vel timer@fffa] 2164 Ints/s (max: 2183)
26 [ vel eth0] 5 Ints/s (max: 10)

Is this the information you wanted? If not, could you point me on how to get
the requested irq rate?

Greets
Alex

[1] https://packages.debian.org/stretch/itop

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