tree 95eb9ccd5e5868b057f0b293b72b04ebc414e457
parent 089bd5cda0b9d10b473a7db61f716917f805987d
author Nicolas Capens <capn@google.com> 1612882920 -0500
committer swiftshader-scoped@luci-project-accounts.iam.gserviceaccount.com <swiftshader-scoped@luci-project-accounts.iam.gserviceaccount.com> 1612909088 +0000

Benchmark time spent by all threads

Google Benchmark by default only measures time spent in the main thread.
Since our Vulkan queue implementation executes command buffers on a
separate thread, this can lead to very little "CPU" time being
reported. Use MeasureProcessCPUTime() instead to use the total CPU usage
of the process by all the threads: https://github.com/google/benchmark#cpu-timers

Bug: b/177624844
Change-Id: I071cd31095a83a5afec51120fb78e42decda2083
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/52628
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Commit-Queue: Nicolas Capens <nicolascapens@google.com>