38 lines
1.1 KiB
Go
38 lines
1.1 KiB
Go
// Copyright 2015 Light Code Labs, LLC
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// +build !windows,!plan9,!nacl
|
|
|
|
package caddy
|
|
|
|
import (
|
|
"fmt"
|
|
"syscall"
|
|
)
|
|
|
|
// checkFdlimit issues a warning if the OS limit for
|
|
// max file descriptors is below a recommended minimum.
|
|
func checkFdlimit() {
|
|
const min = 8192
|
|
|
|
// Warn if ulimit is too low for production sites
|
|
rlimit := &syscall.Rlimit{}
|
|
err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, rlimit)
|
|
if err == nil && rlimit.Cur < min {
|
|
fmt.Printf("WARNING: File descriptor limit %d is too low for production servers. "+
|
|
"At least %d is recommended. Fix with `ulimit -n %d`.\n", rlimit.Cur, min, min)
|
|
}
|
|
|
|
}
|