lovedachengzi opened a new issue, #2722:
URL: https://github.com/apache/dubbo-go/issues/2722
### Environment
- Server: Dubbo-go, v3.1.1
- Client: Dubbo-go, v3.1.1
- Protocol: Triple
- Registry: Nacos, v2.2.3
### Issue description
在k8s中启动服务后发现内存在不断增加，使用pprof工具分析发现github.com/dubbogo/grpc-go/internal/transport.newBufWriter在不断申请内存
### Logs
<details><summary>Click me to check logs</summary>
```
(pprof) top
Showing nodes accounting for 26335.78kB, 89.55% of 29409.22kB total
Showing top 10 nodes out of 85
flat flat% sum% cum cum%
8714.66kB 29.63% 29.63% 8714.66kB 29.63%
github.com/dubbogo/grpc-go/internal/transport.newBufWriter
7625.84kB 25.93% 55.56% 7625.84kB 25.93%
golang.org/x/net/webdav.(*memFile).Write
5809.83kB 19.76% 75.32% 5809.83kB 19.76% bufio.NewReaderSize
1024.44kB 3.48% 78.80% 1024.44kB 3.48% runtime.malg
574.34kB 1.95% 80.75% 574.34kB 1.95%
dubbo.apache.org/dubbo-go/v3/filter/accesslog.newFilter.func1
521.37kB 1.77% 82.53% 521.37kB 1.77%
github.com/envoyproxy/go-control-plane/envoy/config/route/v3.init
519.03kB 1.76% 84.29% 519.03kB 1.76%
github.com/dlclark/regexp2/syntax.init.func1
516.64kB 1.76% 86.05% 516.64kB 1.76% runtime.procresize
515kB 1.75% 87.80% 515kB 1.75% regexp.makeOnePass.func1
514.63kB 1.75% 89.55% 514.63kB 1.75%
github.com/go-playground/validator/v10.map.init.7
(pprof) list github.com/dubbogo/grpc-go/internal/transport.newBufWriter
Total: 28.72MB
ROUTINE ========================
github.com/dubbogo/grpc-go/internal/transport.newBufWriter in
/data/go/pkg/mod/github.com/dubbogo/[email protected]/internal/transport/http_util.go
8.51MB 8.51MB (flat, cum) 29.63% of Total
Error: open
/data/go/pkg/mod/github.com/dubbogo/[email protected]/internal/transport/http_util.go:
no such file or directory
```
</details>
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