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cmd/tailscaled: SetGCPercent() if GOGC is not set.

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This cuts RSS from ~30MB to ~20MB on my machine, after the previous fix
to get rid of unnecessary zstd buffers.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
This commit is contained in:
Avery Pennarun 2020-05-20 11:40:34 -04:00
parent db051fb013
commit f2db4ac277
1 changed files with 10 additions and 0 deletions
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10
cmd/tailscaled/tailscaled.go
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@ -14,7 +14,9 @@ import (
"log" "log"
"net/http" "net/http"
"net/http/pprof" "net/http/pprof"
"os"
"runtime" "runtime"
"runtime/debug"
"time" "time"
"github.com/apenwarr/fixconsole" "github.com/apenwarr/fixconsole"
@ -37,6 +39,14 @@ import (
const globalStateKey = "_daemon" const globalStateKey = "_daemon"
func main() { func main() {
// We aren't very performance sensitive, and the parts that are
// performance sensitive (wireguard) try hard not to do any memory
// allocations. So let's be aggressive about garbage collection,
// unless the user specifically overrides it in the usual way.
if _, ok := os.LookupEnv("GOGC"); !ok {
debug.SetGCPercent(10)
}
defaultTunName := "tailscale0" defaultTunName := "tailscale0"
if runtime.GOOS == "openbsd" { if runtime.GOOS == "openbsd" {
defaultTunName = "tun" defaultTunName = "tun"