동일 실행파일을 여러개 실행시켰을 때 구분해서 affinity 설정

client/client_linux.go

@@ -0,0 +1,26 @@
+//go:build linux
+
+package client
+
+import (
+	"golang.org/x/sys/unix"
+
+	"repositories.action2quare.com/ayo/gocommon/logger"
+)
+
+func set_affinity(pid int, cpu int) {
+	var cpuset unix.CPUSet
+	err := unix.SchedGetaffinity(pid, &cpuset)
+	if err != nil {
+		logger.Println("SchedGetaffinity failed :", err)
+	}
+
+	count := cpuset.Count()
+	cpuset.Zero()
+	cpuset.Set(cpu % count)
+
+	err = unix.SchedSetaffinity(pid, &cpuset)
+	if err != nil {
+		logger.Println("SchedSetaffinity failed :", err)
+	}
+}