mirror of
https://github.com/AdguardTeam/AdGuardHome.git
synced 2024-11-16 18:38:52 -07:00
b3a68bb806
This commit adds a new command-line argument that disables memory optimizations AGH is using. These memory optimizations might be necessary on low-memory devices, but they aren't free and there's a performance hit (see #2044). Now they can be disabled - just pass --no-mem-optimization when you run AGH or when you install the service -- ./AdGuardHome -s install --no-mem-optimization Closes: #2044
45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
package home
|
|
|
|
import (
|
|
"os"
|
|
"runtime/debug"
|
|
"time"
|
|
|
|
"github.com/AdguardTeam/golibs/log"
|
|
)
|
|
|
|
// memoryUsage implements a couple of not really beautiful hacks which purpose is to
|
|
// make OS reclaim the memory freed by AdGuard Home as soon as possible.
|
|
// See this for the details on the performance hits & gains:
|
|
// https://github.com/AdguardTeam/AdGuardHome/issues/2044#issuecomment-687042211
|
|
func memoryUsage(args options) {
|
|
if args.disableMemoryOptimization {
|
|
log.Info("Memory optimization is disabled")
|
|
return
|
|
}
|
|
|
|
// Makes Go allocate heap at a slower pace
|
|
// By default we keep it at 50%
|
|
debug.SetGCPercent(50)
|
|
|
|
// madvdontneed: setting madvdontneed=1 will use MADV_DONTNEED
|
|
// instead of MADV_FREE on Linux when returning memory to the
|
|
// kernel. This is less efficient, but causes RSS numbers to drop
|
|
// more quickly.
|
|
_ = os.Setenv("GODEBUG", "madvdontneed=1")
|
|
|
|
// periodically call "debug.FreeOSMemory" so
|
|
// that the OS could reclaim the free memory
|
|
go func() {
|
|
ticker := time.NewTicker(5 * time.Minute)
|
|
for {
|
|
select {
|
|
case t := <-ticker.C:
|
|
t.Second()
|
|
log.Debug("Free OS memory")
|
|
debug.FreeOSMemory()
|
|
}
|
|
}
|
|
}()
|
|
}
|