minio/cmd/server-rlimit.go
Bala FA 208dd15245 Remove globalMaxCacheSize and globalCacheExpiry variables (#3826)
This patch fixes below

* Remove global variables globalMaxCacheSize and globalCacheExpiry.
* Make global variables into constant in objcache package.
2017-03-02 10:34:37 -08:00

80 lines
2.1 KiB
Go

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