mram
d259b2e96c
Reads the same PDH counters as Task Manager (\GPU Engine(*)\Utilization Percentage, locale-independent via PdhAddEnglishCounterW), which cover graphics work under WDDM — games are caught without an exe list and the offender is named. Windows-only; a missing or failing counter disables the path with one log line. dwm (the desktop compositor) joins the default ignore list.
34 lines
812 B
Go
34 lines
812 B
Go
//go:build windows
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package game
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import (
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"errors"
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"testing"
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"time"
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)
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// TestGPUEngineSamplerLive opens the real PDH query and takes two samples;
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// the first only primes the rate counters. Skipped (not failed) when the
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// machine has no GPU counters.
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func TestGPUEngineSamplerLive(t *testing.T) {
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s, err := openGPUEngineSampler()
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if err != nil {
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t.Skipf("no GPU engine counters: %v", err)
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}
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if _, err := s.sample(); !errors.Is(err, errNotPrimed) {
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t.Fatalf("first sample: err = %v, want errNotPrimed", err)
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}
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time.Sleep(200 * time.Millisecond)
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utils, err := s.sample()
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if err != nil {
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t.Fatalf("second sample: %v", err)
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}
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for pid, util := range utils {
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if pid < 0 || util < 0 {
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t.Errorf("pid %d: util %.2f", pid, util)
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}
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}
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t.Logf("%d processes with 3D-engine usage", len(utils))
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}
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