github.com/kubewharf/katalyst-core@v0.5.3/pkg/agent/qrm-plugins/memory/handlers/sockmem/const.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 sockmem
    18  
    19  const (
    20  	// Constants for global tcpmem ratio
    21  	globalTCPMemRatioMin float64 = 20.0 // min ratio for host tcp mem: 20%
    22  	globalTCPMemRatioMax float64 = 80.0 // max ratio for host tcp mem: 80%
    23  	hostTCPMemFile               = "/proc/sys/net/ipv4/tcp_mem"
    24  
    25  	// Constants for cgroupv1 tcpmem statistics
    26  	kernSockMemAccountingOn float64 = 9223372036854767616.0
    27  
    28  	// Constants for cgroupv1 tcpmem ratio
    29  	cgroupTCPMemMin2G    float64 = 2147483648.0 // static min value for pod's sockmem: 2G
    30  	cgroupTCPMemRatioMin float64 = 20.0         // min ratio for pod's sockmem: 20%
    31  	cgroupTCPMemRatioMax float64 = 200.0        // max ratio for pod's sockmem: 200%
    32  )
    33  
    34  const (
    35  	metricNameTCPMemoryHost   = "async_handler_tcp_memory_host"
    36  	metricNameTCPMemoryCgroup = "async_handler_tcp_memory_cgroup"
    37  )