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stats_linux.go
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stats_linux.go
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// Copyright 2018 Authors of Cilium
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build linux
package bpf
import (
"time"
)
// DumpStats tracks statistics over the dump of a map.
type DumpStats struct {
// Started is the timestamp when the gc run was started.
Started time.Time
// Finished is the timestamp when the gc run completed.
Finished time.Time
// Lookup is the number of key lookups performed.
Lookup uint32
// LookupFailed is the number of key lookups that failed.
LookupFailed uint32
// PrevKeyUnavailable is the number of times the previous key was not
// available.
PrevKeyUnavailable uint32
// KeyFallback is the number of times the current key became invalid
// while traversing and we had to fall back to the previous key.
KeyFallback uint32
// MaxEntries is the maximum number of entries in the gc table.
MaxEntries uint32
// Interrupted is the number of times the gc run was interrupted and
// had to start from scratch.
Interrupted uint32
// Completed is true when the gc run has been completed.
Completed bool
}
// NewDumpStats returns a new stats structure for collecting dump statistics.
func NewDumpStats(m *Map) *DumpStats {
return &DumpStats{
MaxEntries: m.MapInfo.MaxEntries,
}
}
// start starts the dump.
func (d *DumpStats) start() {
d.Started = time.Now()
}
// finish finishes the dump.
func (d *DumpStats) finish() {
d.Finished = time.Now()
}
// Duration returns the duration of the dump.
func (d *DumpStats) Duration() time.Duration {
return d.Finished.Sub(d.Started)
}