github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/pkg/fsutil/fadvise_other.go (about)

     1  // Copyright 2022 PingCAP, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  //
    14  //go:build !linux
    15  
    16  package fsutil
    17  
    18  // DropPageCache us fadvise to tell OS the reclaim memory associated with the file
    19  // as soon as possible, which can avoid the unexpected I/O latency spike risk.
    20  func DropPageCache(name string) error {
    21  	return nil
    22  }