[launcher] Set CPU quota period to 100ms and fix CPU count usage

Signed-off-by: Oleksandr Grytsov <oleksandr_grytsov@epam.com>

Author: al1img

launcher/launcher_test.go

@@ -27,6 +27,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"reflect"
+	"runtime"
 	"strconv"
 	"strings"
 	"sync"
@@ -821,7 +822,8 @@ func TestRuntimeSpec(t *testing.T) {
 		t.Errorf("Wrong CPU period value: %d", *runtimeSpec.Linux.Resources.CPU.Period)
 	}
 
-	if *runtimeSpec.Linux.Resources.CPU.Quota != int64(*serviceConfig.Quotas.CPULimit) {
+	if *runtimeSpec.Linux.Resources.CPU.Quota != int64(*serviceConfig.Quotas.CPULimit*
+		(*runtimeSpec.Linux.Resources.CPU.Period)*uint64(runtime.NumCPU())/nodeInfoProvider.nodeInfo.MaxDMIPs) {
 		t.Errorf("Wrong CPU quota value: %d", *runtimeSpec.Linux.Resources.CPU.Quota)
 	}
 

launcher/spec.go

@@ -26,6 +26,7 @@ import (
 	"os/user"
 	"path"
 	"path/filepath"
+	"runtime"
 	"strconv"
 	"strings"
 
@@ -45,6 +46,8 @@ import (
  * Consts
  **********************************************************************************************************************/
 
+const defaultCPUPeriod uint64 = 100000
+
 const cgroupsPath = "/system.slice/system-aos\\x2dservice.slice/"
 
 const (
@@ -112,9 +115,10 @@ func (spec *runtimeSpec) setCPULimit(cpuLimit uint64) {
 		spec.ociSpec.Linux.Resources.CPU = &runtimespec.LinuxCPU{}
 	}
 
-	cpuQuota := int64(cpuLimit)
+	cpuPeriod := defaultCPUPeriod
+	cpuQuota := int64(cpuLimit * defaultCPUPeriod * uint64(runtime.NumCPU()) / spec.nodeInfo.MaxDMIPs)
 
-	spec.ociSpec.Linux.Resources.CPU.Period = &spec.nodeInfo.MaxDMIPs
+	spec.ociSpec.Linux.Resources.CPU.Period = &cpuPeriod
 	spec.ociSpec.Linux.Resources.CPU.Quota = &cpuQuota
 }