forked from ccfos/huatuo
111 lines
2.9 KiB
Go
111 lines
2.9 KiB
Go
// Copyright 2025 The HuaTuo Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package collector
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import (
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"bytes"
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"context"
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"encoding/binary"
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"fmt"
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"huatuo-bamai/internal/bpf"
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"huatuo-bamai/internal/utils/bpfutil"
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"huatuo-bamai/pkg/metric"
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"huatuo-bamai/pkg/tracing"
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)
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func init() {
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tracing.RegisterEventTracing("mmhost", newMemoryHost)
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}
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func newMemoryHost() (*tracing.EventTracingAttr, error) {
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mm := &memoryHost{
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metrics: []*metric.Data{
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metric.NewGaugeData("compactionstat", 0, "time spent during mm compaction", nil),
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metric.NewGaugeData("allocstallstat", 0, "time spent during mm allocstall", nil),
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},
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}
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return &tracing.EventTracingAttr{
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TracingData: mm,
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Internal: 10,
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Flag: tracing.FlagTracing | tracing.FlagMetric,
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}, nil
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}
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//go:generate $BPF_COMPILE $BPF_INCLUDE -s $BPF_DIR/memory_free_compact.c -o $BPF_DIR/memory_free_compact.o
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type memoryHost struct {
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metrics []*metric.Data
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bpf bpf.BPF
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isRuning bool
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}
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type memoryHostMetric struct {
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/* host: compaction latency */
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CompactionStat uint64
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/* host: page alloc latency in direct reclaim */
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AllocstallStat uint64
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}
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func (c *memoryHost) Update() ([]*metric.Data, error) {
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if !c.isRuning {
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return nil, nil
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}
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items, err := c.bpf.DumpMapByName("mm_free_compact_map")
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if err != nil {
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return nil, fmt.Errorf("Can't dump mm_host_metrictable_relay: %w", err)
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}
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if len(items) == 0 {
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c.metrics[0].Value = float64(0)
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c.metrics[1].Value = float64(0)
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} else {
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mmMetric := memoryHostMetric{}
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buf := bytes.NewReader(items[0].Value)
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err := binary.Read(buf, binary.LittleEndian, &mmMetric)
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if err != nil {
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return nil, fmt.Errorf("read mem_cgroup_map: %w", err)
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}
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c.metrics[0].Value = float64(mmMetric.CompactionStat) / 1000 / 1000
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c.metrics[1].Value = float64(mmMetric.AllocstallStat) / 1000 / 1000
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}
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return c.metrics, nil
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}
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// Start detect work, load bpf and wait data form perfevent
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func (c *memoryHost) Start(ctx context.Context) error {
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var err error
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c.bpf, err = bpf.LoadBpf(bpfutil.ThisBpfOBJ(), nil)
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if err != nil {
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return fmt.Errorf("LoadBpf mmhostbpf.o: %w", err)
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}
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defer c.bpf.Close()
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if err = c.bpf.Attach(); err != nil {
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return fmt.Errorf("Attach memory_free_compact.o: %w", err)
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}
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childCtx, cancel := context.WithCancel(ctx)
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defer cancel()
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c.bpf.WaitDetachByBreaker(childCtx, cancel)
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c.isRuning = true
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<-childCtx.Done()
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c.isRuning = false
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return nil
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}
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