mirror of https://github.com/minio/minio.git
80 lines
2.1 KiB
Go
80 lines
2.1 KiB
Go
/*
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* Minio Cloud Storage, (C) 2017 Minio, Inc.
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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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*/
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package cmd
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import "github.com/minio/minio/pkg/sys"
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func setMaxResources() (err error) {
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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 err = sys.SetMaxOpenFileLimit(maxLimit, maxLimit); err != nil {
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return err
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}
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// Set max memory limit as current memory limit.
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if _, maxLimit, err = sys.GetMaxMemoryLimit(); err != nil {
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return err
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}
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err = sys.SetMaxMemoryLimit(maxLimit, maxLimit)
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return err
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}
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func getMaxCacheSize(curLimit, totalRAM uint64) (cacheSize uint64) {
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// Return zero if current limit or totalTAM is less than minRAMSize.
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if curLimit < minRAMSize || totalRAM < minRAMSize {
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return cacheSize
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}
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// Return 50% of current rlimit or total RAM as cache size.
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if curLimit < totalRAM {
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cacheSize = curLimit / 2
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} else {
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cacheSize = totalRAM / 2
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}
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return cacheSize
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}
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// GetMaxCacheSize returns maximum cache size based on current RAM size and memory limit.
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func GetMaxCacheSize() (cacheSize uint64, err error) {
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// Get max memory limit
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var curLimit uint64
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if curLimit, _, err = sys.GetMaxMemoryLimit(); err != nil {
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return cacheSize, err
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}
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// Get total RAM.
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var stats sys.Stats
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if stats, err = sys.GetStats(); err != nil {
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return cacheSize, err
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}
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// In some OS like windows, maxLimit is zero. Set total RAM as maxLimit.
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if curLimit == 0 {
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curLimit = stats.TotalRAM
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}
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cacheSize = getMaxCacheSize(curLimit, stats.TotalRAM)
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return cacheSize, err
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}
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