Thanks Graham,
I wasn’t aware of that. The hot path concept is the same as I get from PerfView but I may need to get even more granular, i.e. code blocks rather than functions, hence the interest in timers. I
also thought that timing would give me a cross check. I plan to look into Guy’s suggestion regarding CPU time – as he says, I only need relative values. I’ll try to find some time this weekend.
Best regards…Paul
From: Wireshark-dev [mailto:wireshark-dev-bounces@xxxxxxxxxxxxx]
On Behalf Of Graham Bloice
Sent: 16 October 2017 11:11
To: Developer support list for Wireshark <wireshark-dev@xxxxxxxxxxxxx>
Subject: Re: [Wireshark-dev] Tips regarding measuring function execution times
Visual Studio
On 14 October 2017 at 15:18, Paul Offord <Paul.Offord@xxxxxxxxxxxx> wrote:
I’m investigating a performance problem with the TRANSUM dissector. I’d like to measure the accumulated time taken to execute a function in a Release build. My basic idea is to
do something like this:
guint32 execute_time_us;
.
.
start_stopwatch(&execute_time_us);
function_call_to_be_measured();
pause_stopwatch(&execute_time_us);
.
.
.
stop_and_output_stopwatch(&execute_time_us);
Is there a standard way to do this in Wireshark? How can I output the accumulated time on, say, the Status Line?
Best regards…Paul
Visual Studio (Pro at least, not sure about Community), includes profiling tools, both sampling (less accurate, but least invasive) and instrumented (more accurate, more invasive).
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