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fix: Set globalMaxCacheSize to allowable value. (#3816)

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If memory resource limit and total RAM are more than 8GiB, either 50%
of memory resource limit or total RAM is set to globalMaxCacheSize.
This commit is contained in:
Bala FA 2017-03-01 06:21:52 +05:30 committed by Harshavardhana
parent fcad4a44fd
commit 097cec676a
3 changed files with 52 additions and 26 deletions
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30
cmd/server-rlimit-nix.go
View File

@ -59,25 +59,35 @@ func setMaxMemory() error {
if err != nil {
return err
}
err = syscall.Getrlimit(syscall.RLIMIT_AS, &rLimit)
if err != nil {
return err
}
// Validate if rlimit memory is set to lower
// than max cache size. Then we should use such value.
if uint64(rLimit.Cur) < globalMaxCacheSize {
globalMaxCacheSize = uint64(float64(50*rLimit.Cur) / 100)
// If current rlimit is less than minRAMSize, do not set globalMaxCacheSize.
if rLimit.Cur < minRAMSize {
return nil
}
// Make sure globalMaxCacheSize is less than RAM size.
// Get total RAM.
stats, err := sys.GetStats()
if err != nil && err != sys.ErrNotImplemented {
if err != nil {
// Ignore sys.ErrNotImplemented error.
if err == sys.ErrNotImplemented {
err = nil
}
return err
}
// If TotalRAM is >= minRAMSize we proceed to enable cache.
// cache is always 50% of the totalRAM.
if err == nil && stats.TotalRAM >= minRAMSize {
globalMaxCacheSize = uint64(float64(50*stats.TotalRAM) / 100)
// Set 50% of current rlimit or total RAM to globalMaxCacheSize.
if stats.TotalRAM >= minRAMSize {
if rLimit.Cur < stats.TotalRAM {
globalMaxCacheSize = rLimit.Cur / 2
} else {
globalMaxCacheSize = stats.TotalRAM / 2
}
}
return nil
}

30
cmd/server-rlimit-openbsd.go
View File

@ -59,25 +59,35 @@ func setMaxMemory() error {
if err != nil {
return err
}
err = syscall.Getrlimit(syscall.RLIMIT_DATA, &rLimit)
if err != nil {
return err
}
// Validate if rlimit memory is set to lower
// than max cache size. Then we should use such value.
if uint64(rLimit.Cur) < globalMaxCacheSize {
globalMaxCacheSize = uint64(float64(50*rLimit.Cur) / 100)
// If current rlimit is less than minRAMSize, do not set globalMaxCacheSize.
if rLimit.Cur < minRAMSize {
return nil
}
// Make sure globalMaxCacheSize is less than RAM size.
// Get total RAM.
stats, err := sys.GetStats()
if err != nil && err != sys.ErrNotImplemented {
if err != nil {
// Ignore sys.ErrNotImplemented error.
if err == sys.ErrNotImplemented {
err = nil
}
return err
}
// If TotalRAM is >= minRAMSize we proceed to enable cache.
// cache is always 50% of the totalRAM.
if err == nil && stats.TotalRAM >= minRAMSize {
globalMaxCacheSize = uint64(float64(50*stats.TotalRAM) / 100)
// Set 50% of current rlimit or total RAM to globalMaxCacheSize.
if stats.TotalRAM >= minRAMSize {
if rLimit.Cur < stats.TotalRAM {
globalMaxCacheSize = rLimit.Cur / 2
} else {
globalMaxCacheSize = stats.TotalRAM / 2
}
}
return nil
}

18
cmd/server-rlimit-win.go
View File

@ -28,15 +28,21 @@ func setMaxOpenFiles() error {
}
func setMaxMemory() error {
// Make sure globalMaxCacheSize is less than RAM size.
// Get total RAM.
stats, err := sys.GetStats()
if err != nil && err != sys.ErrNotImplemented {
if err != nil {
// Ignore sys.ErrNotImplemented error.
if err == sys.ErrNotImplemented {
err = nil
}
return err
}
// If TotalRAM is <= minRAMSize we proceed to enable cache.
// cache is always 50% of the totalRAM.
if err == nil && stats.TotalRAM >= minRAMSize {
globalMaxCacheSize = uint64(float64(50*stats.TotalRAM) / 100)
// Set 50% of total RAM to globalMaxCacheSize.
if stats.TotalRAM >= minRAMSize {
globalMaxCacheSize = stats.TotalRAM / 2
}
return nil
}