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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
// Author: arnej
package startcbinary
import (
"os"
"strconv"
"strings"
"github.com/vespa-engine/vespa/client/go/trace"
"github.com/vespa-engine/vespa/client/go/util"
)
func (spec *ProgSpec) optionallyReduceBaseFrequency() {
if spec.getenv(ENV_VESPA_TIMER_HZ) == "" {
backticks := util.BackTicksIgnoreStderr
out, _ := backticks.Run("uname", "-r")
if strings.Contains(out, "linuxkit") {
trace.Trace("Running docker on macos. Reducing base frequency from 1000hz to 100hz due to high cost of sampling time. This will reduce timeout accuracy.")
spec.setenv(ENV_VESPA_TIMER_HZ, "100")
}
}
}
func getThpSizeMb() int {
const fn = "/sys/kernel/mm/transparent_hugepage/hpage_pmd_size"
thp_size := 2
line, err := os.ReadFile(fn)
if err == nil {
chomped := strings.TrimSuffix(string(line), "\n")
number, err := strconv.Atoi(chomped)
if err == nil {
thp_size = number / (1024 * 1024)
trace.Trace("thp_size", chomped, "=>", thp_size)
} else {
trace.Trace("no thp_size:", err)
}
} else {
trace.Trace("no thp_size:", err)
}
return thp_size
}
func (spec *ProgSpec) configureTuning() {
spec.optionallyReduceBaseFrequency()
util.SetResourceLimit(util.RLIMIT_CORE, util.NO_RLIMIT)
util.SetResourceLimit(util.RLIMIT_NOFILE, 262144)
util.SetResourceLimit(util.RLIMIT_NPROC, 409600)
}
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