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Posted to dev@brpc.apache.org by GitBox <gi...@apache.org> on 2020/05/06 07:45:53 UTC
[GitHub] [incubator-brpc] rickonji opened a new issue #1108: 开启tcmalloc几乎无性能提升？
rickonji opened a new issue #1108:
URL: https://github.com/apache/incubator-brpc/issues/1108
用`wrk`压测了下example里提供的http_c++样例。
简单修改成了echo server：
```
class HttpServiceImpl : public HttpService {
public:
......
void Echo(google::protobuf::RpcController* cntl_base,
const HttpRequest*,
HttpResponse*,
google::protobuf::Closure* done) {
brpc::ClosureGuard done_guard(done);
brpc::Controller* cntl =
static_cast<brpc::Controller*>(cntl_base);
cntl->http_response().set_content_type("text/plain");
butil::IOBufBuilder os;
os << "\nbody: " << cntl->request_attachment() << '\n';
os.move_to(cntl->response_attachment());
}
};
```
Makefile里使用NEED_GPERFTOOLS控制是否开启tcmalloc。
机器：centos，64G内存，32核物理机
服务端使用8c，8个edisp，命令如下：
```
./http_server -num_threads=8 -event_dispatcher_num=8
```
压测端命令：
```
./wrk -t 20 -c 1000 -s ./post.lua -d 60s --latency http://xxxxx:8010/hello
```
测试结果：
开不开tcmalloc都是47w qps
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[GitHub] [incubator-brpc] rickonji commented on issue #1108: 开启tcmalloc几乎无性能提升？
Posted by GitBox <gi...@apache.org>.
rickonji commented on issue #1108:
URL: https://github.com/apache/incubator-brpc/issues/1108#issuecomment-624998385
没有挑战的意思哈，就是想问下原因，或者怎么解决。比如是不是对tcmalloc的版本有要求。感觉开不开tcmalloc没变化很奇怪
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[GitHub] [incubator-brpc] jamesge commented on issue #1108: 开启tcmalloc几乎无性能提升？
Posted by GitBox <gi...@apache.org>.
jamesge commented on issue #1108:
URL: https://github.com/apache/incubator-brpc/issues/1108#issuecomment-626522804
@rickonji 确认下server确实开启了tcmalloc，方式是看下http_server的/hotspots/cpu或/hotspots/heap是否可访问
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[GitHub] [incubator-brpc] gydong commented on issue #1108: 开启tcmalloc几乎无性能提升？
Posted by GitBox <gi...@apache.org>.
gydong commented on issue #1108:
URL: https://github.com/apache/incubator-brpc/issues/1108#issuecomment-624997837
这个测试场景太简单了，说明不了什么问题
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[GitHub] [incubator-brpc] zhijunfu commented on issue #1108: 开启tcmalloc几乎无性能提升？
Posted by GitBox <gi...@apache.org>.
zhijunfu commented on issue #1108:
URL: https://github.com/apache/incubator-brpc/issues/1108#issuecomment-626447746
这个取决于场景的，tcmalloc适合于大量的小块内存分配
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