Measure of exucution time
Posted: Fri Apr 07, 2017 5:40 pmHello !
How i can measure the execution time of some function ? using a tmr ?
Max
How i can measure the execution time of some function ? using a tmr ?
Max
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Measure of exucution time
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Posted: Fri Apr 07, 2017 5:40 pmRe: Measure of exucution time
Posted: Sat Apr 08, 2017 2:09 pmIf you need wall-clock time you can use the rtctime module in combination with the SNTP module. If wall-clock isn't relevant tmr.time() may be enough.
Re: Measure of exucution time
Posted: Sat Apr 15, 2017 4:58 amYou can profile a function like this:
Example:
Resolution is one microsecond. Note the 32 bit counter wraps from time to time and might then show a really big number
Code: Select all
function profile(name)
local start = tmr.now()
_G[name]()
local delta = tmr.now() - start
print(name .. " needs " .. (delta / 1000) .. " ms")
end
Example:
Code: Select all
function longTime()
local sum = 0
for i = 1, 100000, 1 do
sum = sum + i
end
print(sum)
end
> profile("longTime")
5000050000
longTime needs 474.855 ms
Resolution is one microsecond. Note the 32 bit counter wraps from time to time and might then show a really big number
Re: Measure of exucution time
Posted: Sat Apr 15, 2017 4:06 pmNice example, thanks.