mirror of https://github.com/minio/minio.git
95 lines
2.8 KiB
Go
95 lines
2.8 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"runtime"
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"runtime/debug"
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"github.com/dustin/go-humanize"
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"github.com/minio/madmin-go/v3/kernel"
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"github.com/minio/minio/internal/logger"
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"github.com/minio/pkg/v3/sys"
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)
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func oldLinux() bool {
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currentKernel, err := kernel.CurrentVersion()
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if err != nil {
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// Could not probe the kernel version
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return false
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}
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if currentKernel == 0 {
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// We could not get any valid value return false
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return false
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}
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// legacy linux indicator for printing warnings
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// about older Linux kernels and Go runtime.
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return currentKernel < kernel.Version(4, 0, 0)
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}
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func setMaxResources(ctx serverCtxt) (err error) {
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// Set the Go runtime max threads threshold to 90% of kernel setting.
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sysMaxThreads, err := sys.GetMaxThreads()
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if err == nil {
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minioMaxThreads := (sysMaxThreads * 90) / 100
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// Only set max threads if it is greater than the default one
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if minioMaxThreads > 10000 {
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debug.SetMaxThreads(minioMaxThreads)
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}
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}
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var maxLimit uint64
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// Set open files limit to maximum.
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if _, maxLimit, err = sys.GetMaxOpenFileLimit(); err != nil {
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return err
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}
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if maxLimit < 4096 && runtime.GOOS != globalWindowsOSName {
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logger.Info("WARNING: maximum file descriptor limit %d is too low for production servers. At least 4096 is recommended. Fix with \"ulimit -n 4096\"",
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maxLimit)
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}
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if err = sys.SetMaxOpenFileLimit(maxLimit, maxLimit); err != nil {
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return err
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}
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_, vssLimit, err := sys.GetMaxMemoryLimit()
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if err != nil {
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return err
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}
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if vssLimit > 0 && vssLimit < humanize.GiByte {
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logger.Info("WARNING: maximum virtual memory limit (%s) is too small for 'go runtime', please consider setting `ulimit -v` to unlimited",
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humanize.IBytes(vssLimit))
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}
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if ctx.MemLimit > 0 {
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debug.SetMemoryLimit(int64(ctx.MemLimit))
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}
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// Do not use RLIMIT_AS as that is not useful and at times on systems < 4Gi
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// this can crash the Go runtime if the value is smaller refer
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// - https://github.com/golang/go/issues/38010
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// - https://github.com/golang/go/issues/43699
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// So do not add `sys.SetMaxMemoryLimit()` this is not useful for any practical purposes.
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return nil
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}
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