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fix: some kernel params tune by default

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This commit is contained in:
Qiu Jian
2023-09-07 23:58:31 +08:00
parent 310f13aa88
commit a4a24c13c9
1 changed files with 8 additions and 0 deletions
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8
pkg/hostman/hostinfo/hostinfo.go
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@@ -622,15 +622,23 @@ func (h *SHostInfo) PreventArpFlux() {
// set swappiness=0 to avoid swap
// set vfs_cache_pressure=300 to avoid stale pagecache
func (h *SHostInfo) tuneSystem() {
minMemMb := h.getKubeReservedMemMb()
if minMemMb < 100 {
minMemMb = 100
}
minMemKB := fmt.Sprintf("%d", 2*minMemMb*1024)
kv := map[string]string{
"/proc/sys/vm/swappiness": "0",
"/proc/sys/vm/vfs_cache_pressure": "350",
"/proc/sys/vm/min_free_kbytes": minMemKB,
"/proc/sys/net/ipv4/tcp_mtu_probing": "2",
"/proc/sys/net/ipv4/neigh/default/gc_thresh1": "1024",
"/proc/sys/net/ipv4/neigh/default/gc_thresh2": "4096",
"/proc/sys/net/ipv4/neigh/default/gc_thresh3": "8192",
"/sys/module/kvm/parameters/ignore_msrs": "1",
"/sys/module/kvm/parameters/report_ignored_msrs": "0",
"/proc/sys/net/netfilter/nf_conntrack_tcp_be_liberal": "1",
}
for k, v := range kv {
sysutils.SetSysConfig(k, v)