add cached kic system info

cmd/minikube/cmd/start.go

@@ -70,6 +70,7 @@ var (
 	insecureRegistry []string
 	apiServerNames   []string
 	apiServerIPs     []net.IP
+	kicSysInfo       *oci.SysInfo
 )
 
 func init() {
@@ -752,12 +753,11 @@ func memoryLimits(drvName string) (int, int, error) {
 	containerLimit := 0
 
 	if driver.IsKIC(drvName) {
-		s, err := oci.DaemonInfo(drvName)
+		s, err := cachedKicSystemInfo(drvName)
 		if err != nil {
 			return -1, -1, err
 		}
 		containerLimit = int(s.TotalMemory / 1024 / 1024)
-		myabeAdviceDockerResources(containerLimit, sysLimit, s.CPUs, drvName)
 	}
 
 	return sysLimit, containerLimit, nil
@@ -885,8 +885,8 @@ func validateFlags(cmd *cobra.Command, drvName string) {
 		}
 	}
 
+	validateMemorySize()
 	if cmd.Flags().Changed(memory) {
-		validateMemorySize()
 		if !driver.HasResourceLimits(drvName) {
 			out.WarningT("The '{{.name}}' driver does not respect the --memory flag", out.V{"name": drvName})
 		}
@@ -1132,3 +1132,14 @@ func getKubernetesVersion(old *config.ClusterConfig) string {
 
 	return version.VersionPrefix + nvs.String()
 }
+
+// cachedKicSystemInfo will return docker/podman info. it will call docker/podam info only once per minikube start to avoid perforamce side effects
+func cachedKicSystemInfo(ociBin string) (oci.SysInfo, error) {
+	var err error
+	if kicSysInfo == nil {
+		si, err := oci.DaemonInfo(ociBin)
+		kicSysInfo = &si
+		return *kicSysInfo, err
+	}
+	return *kicSysInfo, err
+}