forked from ccfos/huatuo
122 lines
3.1 KiB
Go
122 lines
3.1 KiB
Go
// Copyright 2025 The HuaTuo Authors
|
|
//
|
|
// 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.
|
|
|
|
package events
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"strings"
|
|
"time"
|
|
|
|
"huatuo-bamai/internal/bpf"
|
|
"huatuo-bamai/internal/conf"
|
|
"huatuo-bamai/internal/log"
|
|
"huatuo-bamai/internal/pod"
|
|
"huatuo-bamai/internal/storage"
|
|
"huatuo-bamai/internal/utils/bpfutil"
|
|
"huatuo-bamai/pkg/tracing"
|
|
)
|
|
|
|
type memoryReclaimTracing struct{}
|
|
|
|
type memoryReclaimPerfEvent struct {
|
|
Comm [bpfutil.TaskCommLen]byte
|
|
Deltatime uint64
|
|
CSS uint64
|
|
Pid uint64
|
|
}
|
|
|
|
// MemoryReclaimTracingData is the full data structure.
|
|
type MemoryReclaimTracingData struct {
|
|
Pid uint64 `json:"pid"`
|
|
Comm string `json:"comm"`
|
|
Deltatime uint64 `json:"deltatime"`
|
|
}
|
|
|
|
func init() {
|
|
tracing.RegisterEventTracing("memreclaim", newMemoryReclaim)
|
|
}
|
|
|
|
func newMemoryReclaim() (*tracing.EventTracingAttr, error) {
|
|
return &tracing.EventTracingAttr{
|
|
TracingData: &memoryReclaimTracing{},
|
|
Internal: 5,
|
|
Flag: tracing.FlagTracing,
|
|
}, nil
|
|
}
|
|
|
|
//go:generate $BPF_COMPILE $BPF_INCLUDE -s $BPF_DIR/memory_reclaim.c -o $BPF_DIR/memory_reclaim.o
|
|
|
|
// Start detect work, load bpf and wait data form perfevent
|
|
func (c *memoryReclaimTracing) Start(ctx context.Context) error {
|
|
log.Infof("memory reclaim start.")
|
|
|
|
deltath := conf.Get().Tracing.MemoryReclaim.Deltath
|
|
|
|
b, err := bpf.LoadBpf(bpfutil.ThisBpfOBJ(), map[string]any{"deltath": deltath})
|
|
if err != nil {
|
|
log.Infof("LoadBpf: %v", err)
|
|
return err
|
|
}
|
|
defer b.Close()
|
|
|
|
childCtx, cancel := context.WithCancel(ctx)
|
|
defer cancel()
|
|
|
|
reader, err := b.AttachAndEventPipe(childCtx, "reclaim_perf_events", 8192)
|
|
if err != nil {
|
|
log.Infof("AttachAndEventPipe: %v", err)
|
|
return err
|
|
}
|
|
defer reader.Close()
|
|
|
|
b.WaitDetachByBreaker(childCtx, cancel)
|
|
|
|
for {
|
|
select {
|
|
case <-childCtx.Done():
|
|
return nil
|
|
default:
|
|
var data memoryReclaimPerfEvent
|
|
if err := reader.ReadInto(&data); err != nil {
|
|
return fmt.Errorf("ReadFromPerfEvent fail: %w", err)
|
|
}
|
|
|
|
container, err := pod.GetContainerByCSS(data.CSS, "cpu")
|
|
if err != nil {
|
|
return fmt.Errorf("GetContainerByCSS by CSS %d: %w", data.CSS, err)
|
|
}
|
|
|
|
// We only care about the container and nothing else.
|
|
// Though it may be unfair, that's just how life is.
|
|
//
|
|
// -- Tonghao Zhang, tonghao@bamaicloud.com
|
|
if container == nil {
|
|
continue
|
|
}
|
|
|
|
// save storage
|
|
tracingData := &MemoryReclaimTracingData{
|
|
Pid: data.Pid,
|
|
Comm: strings.Trim(string(data.Comm[:]), "\x00"),
|
|
Deltatime: data.Deltatime,
|
|
}
|
|
|
|
log.Infof("memory_reclaim saves storage: %+v", tracingData)
|
|
storage.Save("memory_reclaim", container.ID, time.Now(), tracingData)
|
|
}
|
|
}
|
|
}
|