github.com/kubewharf/katalyst-core@v0.5.3/pkg/metaserver/spd/util.go (about)

     1  /*
     2  Copyright 2022 The Katalyst Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package spd
    18  
    19  import (
    20  	"context"
    21  
    22  	"k8s.io/apimachinery/pkg/api/errors"
    23  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    24  
    25  	workloadapi "github.com/kubewharf/katalyst-api/pkg/apis/workload/v1alpha1"
    26  	"github.com/kubewharf/katalyst-api/pkg/consts"
    27  )
    28  
    29  const (
    30  	defaultMemoryBandwidthRequest = 0
    31  )
    32  
    33  // GetContainerMemoryBandwidthRequest gets the memory bandwidth request for pod with given cpu request
    34  func GetContainerMemoryBandwidthRequest(profilingManager ServiceProfilingManager, podMeta metav1.ObjectMeta, cpuRequest int) (int, error) {
    35  	mbwRequest := defaultMemoryBandwidthRequest
    36  	memoryBandwidth, err := profilingManager.ServiceAggregateMetrics(context.Background(), podMeta, consts.SPDAggMetricNameMemoryBandwidth,
    37  		false, workloadapi.Avg, workloadapi.Sum, workloadapi.Max)
    38  	if err != nil && !errors.IsNotFound(err) {
    39  		return 0, err
    40  	} else if err == nil && memoryBandwidth != nil {
    41  		mbwRequest = int(memoryBandwidth.Value()) * cpuRequest
    42  	}
    43  
    44  	return mbwRequest, nil
    45  }