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Make size of event queue configurable #535

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Merged
merged 1 commit into from
Nov 9, 2022
Merged

Make size of event queue configurable #535

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4 changes: 4 additions & 0 deletions cmd/tetragon/flags.go
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,8 @@ const (

keyRBSize = "rb-size"
keyRBSizeTotal = "rb-size-total"

keyEventQueueSize = "event-queue-size"
)

var (
Expand Down Expand Up @@ -133,4 +135,6 @@ func readAndSetFlags() {

cpuProfile = viper.GetString(keyCpuProfile)
memProfile = viper.GetString(keyMemProfile)

option.Config.EventQueueSize = viper.GetUint(keyEventQueueSize)
}
1 change: 1 addition & 0 deletions cmd/tetragon/main.go
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Expand Up @@ -463,6 +463,7 @@ func execute() error {
flags.String(keyCiliumBPF, "", "Cilium BPF directory")
flags.Bool(keyEnableProcessCred, false, "Enable process_cred events")
flags.Bool(keyEnableProcessNs, false, "Enable namespace information in process_exec and process_kprobe events")
flags.Uint(keyEventQueueSize, 10000, "Set the size of the internal event queue.")

// Config files
flags.String(keyConfigFile, "", "Configuration file to load from")
Expand Down
2 changes: 2 additions & 0 deletions pkg/option/config.go
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Expand Up @@ -38,6 +38,8 @@ type config struct {

RBSize int
RBSizeTotal int

EventQueueSize uint
}

var (
Expand Down
7 changes: 6 additions & 1 deletion pkg/server/server.go
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Expand Up @@ -18,6 +18,7 @@ import (
"github.com/cilium/tetragon/pkg/health"
"github.com/cilium/tetragon/pkg/logger"
"github.com/cilium/tetragon/pkg/metrics/eventmetrics"
"github.com/cilium/tetragon/pkg/option"
"github.com/cilium/tetragon/pkg/sensors"
"github.com/cilium/tetragon/pkg/version"
)
Expand Down Expand Up @@ -64,8 +65,12 @@ func NewServer(ctx context.Context, wg *sync.WaitGroup, notifier notifier, obser
}

func newListener() *getEventsListener {
var chanSize uint = 10000
if option.Config.EventQueueSize > 0 {
chanSize = option.Config.EventQueueSize
}
return &getEventsListener{
events: make(chan *tetragon.GetEventsResponse, 100),
events: make(chan *tetragon.GetEventsResponse, chanSize),
}
}

Expand Down