)
func TestGcSys(t *testing.T) {
+ runtime.GC()
+ runtime.UpdateMemStats()
+ sys := runtime.MemStats.Sys
+
for i := 0; i < 1000000; i++ {
workthegc()
}
// Should only be using a few MB.
runtime.UpdateMemStats()
- sys := runtime.MemStats.Sys
- t.Logf("using %d MB", sys>>20)
- if sys > 10e6 {
- t.Fatalf("using too much memory: %d MB", sys>>20)
+ if sys > runtime.MemStats.Sys {
+ sys = 0
+ } else {
+ sys = runtime.MemStats.Sys - sys
+ }
+ t.Logf("used %d extra bytes", sys)
+ if sys > 2<<20 {
+ t.Fatalf("using too much memory: %d bytes", sys)
}
}