github.com/hasnat/dolt/go@v0.0.0-20210628190320-9eb5d843fbb7/store/nbs/benchmarks/cachedrop/drop_cache.go (about)

     1  // Copyright 2019 Dolthub, 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  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  //
    15  // This file incorporates work covered by the following copyright and
    16  // permission notice:
    17  //
    18  // Copyright 2016 Attic Labs, Inc. All rights reserved.
    19  // Licensed under the Apache License, version 2.0:
    20  // http://www.apache.org/licenses/LICENSE-2.0
    21  
    22  package main
    23  
    24  import (
    25  	"log"
    26  	"os"
    27  )
    28  
    29  const dropCaches = "/proc/sys/vm/drop_caches"
    30  
    31  func main() {
    32  	f, err := os.OpenFile(dropCaches, os.O_WRONLY, 0666)
    33  	if err != nil {
    34  		log.Fatalln(err)
    35  	}
    36  
    37  	if _, err := f.WriteString("1"); err != nil {
    38  		log.Fatalln(err)
    39  	}
    40  }