38 lines
1.1 KiB
Go
38 lines
1.1 KiB
Go
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// Copyright 2015 Light Code Labs, LLC
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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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//
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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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// +build !windows,!plan9,!nacl
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package caddy
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import (
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"fmt"
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"syscall"
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)
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// checkFdlimit issues a warning if the OS limit for
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// max file descriptors is below a recommended minimum.
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func checkFdlimit() {
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const min = 8192
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// Warn if ulimit is too low for production sites
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rlimit := &syscall.Rlimit{}
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err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, rlimit)
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if err == nil && rlimit.Cur < min {
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fmt.Printf("WARNING: File descriptor limit %d is too low for production servers. "+
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"At least %d is recommended. Fix with \"ulimit -n %d\".\n", rlimit.Cur, min, min)
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}
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}
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