1520241 - TestSPSCQueue.exe is very slow on Windows

Status: RESOLVED FIXED

(Core :: MFBT, defect)

Description

[(Away)]

The cppunittest TestSPSCQueue.exe takes so long on my Windows machines that it times out. This is because there are nested loops trying to sleep for 10 microseconds, but Windows's default timer resolution turns each one into a 16ms sleep.

Apparently the automation machines have their system timer resolution set to 1ms, which makes the test take "only" 2.5 mins. I can get the same effect on my machines by adding timeBeginPeriod(1) (a trick we use in the profiler and elsewhere), but talking to padenot, that's still too long for this test. Let's just Sleep(0) and hope for the best.

Comment 1

[(Away)]

Attachment: Avoid slow sleeps on Windows in TestSPSCQueue.exe

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/5876723df7ba
Avoid slow sleeps on Windows in TestSPSCQueue.exe r=padenot

Comment 3

[Arthur Iakab [arthur_iakab]]

https://hg.mozilla.org/mozilla-central/rev/5876723df7ba