33 lines
525 B
Go
33 lines
525 B
Go
package runtime_test
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import (
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"runtime"
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"testing"
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)
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func TestGcSys(t *testing.T) {
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runtime.GC()
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runtime.UpdateMemStats()
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sys := runtime.MemStats.Sys
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for i := 0; i < 1000000; i++ {
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workthegc()
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}
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// Should only be using a few MB.
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runtime.UpdateMemStats()
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if sys > runtime.MemStats.Sys {
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sys = 0
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} else {
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sys = runtime.MemStats.Sys - sys
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}
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t.Logf("used %d extra bytes", sys)
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if sys > 2<<20 {
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t.Fatalf("using too much memory: %d bytes", sys)
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}
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}
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func workthegc() []byte {
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return make([]byte, 1029)
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}
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