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Set memory params of memory autoballoning through arguments

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This commit is contained in:
Mikhail Klementev 2018-07-13 21:31:42 +00:00
parent 0cef401cb5
commit 02f4eab277
1 changed files with 6 additions and 6 deletions
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12
appvm.go
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@ -241,14 +241,12 @@ func drop(name string) {
os.RemoveAll(appDataPath) os.RemoveAll(appDataPath)
} }
func autoBalloon(l *libvirt.Libvirt) { func autoBalloon(l *libvirt.Libvirt, memoryMin, adjustPercent uint64) {
domains, err := l.Domains() domains, err := l.Domains()
if err != nil { if err != nil {
log.Fatal(err) log.Fatal(err)
} }
const memoryMin = 512 * 1024 // 512 MiB
table := tablewriter.NewWriter(os.Stdout) table := tablewriter.NewWriter(os.Stdout)
table.SetHeader([]string{"Application VM", "Used memory", "Current memory", "Max memory", "New memory"}) table.SetHeader([]string{"Application VM", "Used memory", "Current memory", "Max memory", "New memory"})
for _, d := range domains { for _, d := range domains {
@ -270,7 +268,7 @@ func autoBalloon(l *libvirt.Libvirt) {
log.Fatal(err) log.Fatal(err)
} }
memoryNew := uint64(float64(memoryUsed) * 1.2) // +20% memoryNew := uint64(float64(memoryUsed) * (1 + float64(adjustPercent)/100))
if memoryNew > memoryMax { if memoryNew > memoryMax {
memoryNew = memoryMax - 1 memoryNew = memoryMax - 1
@ -308,7 +306,9 @@ func main() {
defer l.Disconnect() defer l.Disconnect()
kingpin.Command("list", "List applications") kingpin.Command("list", "List applications")
kingpin.Command("autoballoon", "Automatically adjust/reduce app vm memory") autoballonCommand := kingpin.Command("autoballoon", "Automatically adjust/reduce app vm memory")
minMemory := autoballonCommand.Flag("min-memory", "Set minimal memory (megabytes)").Default("1024").Uint64()
adjustPercent := autoballonCommand.Flag("adj-memory", "Adjust memory ammount (percents)").Default("20").Uint64()
startName := kingpin.Command("start", "Start application").Arg("name", "Application name").Required().String() startName := kingpin.Command("start", "Start application").Arg("name", "Application name").Required().String()
stopName := kingpin.Command("stop", "Stop application").Arg("name", "Application name").Required().String() stopName := kingpin.Command("stop", "Stop application").Arg("name", "Application name").Required().String()
dropName := kingpin.Command("drop", "Remove application data").Arg("name", "Application name").Required().String() dropName := kingpin.Command("drop", "Remove application data").Arg("name", "Application name").Required().String()
@ -323,6 +323,6 @@ func main() {
case "drop": case "drop":
drop(*dropName) drop(*dropName)
case "autoballoon": case "autoballoon":
autoBalloon(l) autoBalloon(l, *minMemory*1024, *adjustPercent)
} }
} }