85 lines
2.3 KiB
Go
85 lines
2.3 KiB
Go
// Copyright 2018 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package commands
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import (
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"syscall"
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"github.com/spf13/cobra"
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jww "github.com/spf13/jwalterweatherman"
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)
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var _ cmder = (*limitCmd)(nil)
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type limitCmd struct {
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*baseCmd
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}
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func newLimitCmd() *limitCmd {
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ccmd := &cobra.Command{
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Use: "ulimit",
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Short: "Check system ulimit settings",
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Long: `Hugo will inspect the current ulimit settings on the system.
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This is primarily to ensure that Hugo can watch enough files on some OSs`,
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RunE: func(cmd *cobra.Command, args []string) error {
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var rLimit syscall.Rlimit
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err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
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if err != nil {
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return newSystemError("Error Getting rlimit ", err)
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}
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jww.FEEDBACK.Println("Current rLimit:", rLimit)
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if rLimit.Cur >= newRlimit {
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return nil
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}
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jww.FEEDBACK.Println("Attempting to increase limit")
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rLimit.Cur = newRlimit
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err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
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if err != nil {
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return newSystemError("Error Setting rLimit ", err)
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}
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err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
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if err != nil {
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return newSystemError("Error Getting rLimit ", err)
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}
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jww.FEEDBACK.Println("rLimit after change:", rLimit)
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return nil
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},
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}
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return &limitCmd{baseCmd: newBaseCmd(ccmd)}
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}
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const newRlimit = 10240
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func tweakLimit() {
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var rLimit syscall.Rlimit
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err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
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if err != nil {
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jww.WARN.Println("Unable to get rlimit:", err)
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return
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}
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if rLimit.Cur < newRlimit {
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rLimit.Cur = newRlimit
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err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
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if err != nil {
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// This may not succeed, see https://github.com/golang/go/issues/30401
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jww.INFO.Println("Unable to increase number of open files limit:", err)
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}
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}
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}
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