Shulou(Shulou.com)05/31 Report--

Today, I will talk to you about how to use source code interpretation to improve the maximum concurrency of RGW. Many people may not know much about it. In order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.

How to improve the maximum concurrency of RGW by interpreting source code

Take the main () of the rgw service as the entry, and view the initialization process of the entire fastcgi. The code is as follows

# src/rgw/rgw_main.ccint main (int argc, const char * * argv) if (framework = = "fastcgi" | | framework = = "fcgi") {RGWProcessEnv fcgi_pe = {store, & rest, olog, 0}; fe = new RGWFCGXFrontend (fcgi_pe, config); dout (0) rgw_thread_pool_size, conf); return 0;}}

The default rgw_thread_pool_size is 100. the code definition is as follows

# src/common/config_opts.hOPTION (rgw_thread_pool_size, OPT_INT, 100)

Find max_connections=num_threads + (num_threads > > 3) through the constructor of RGWFCGXProcess, that is, max_connections=100+1=101 by default, which is also mentioned in the code comments to ensure that as many requests are processed as possible.

# src/rgw/rgw_process.hclass RGWFCGXProcess: public RGWProcess {int max_connections;public: / * have a bit more connections than threads so that requests are * still accepted even if we're still processing older requests * / RGWFCGXProcess (CephContext* cct, RGWProcessEnv* pe, int num_threads, RGWFrontendConfig* _ conf): RGWProcess (cct, pe, num_threads, _ conf), max_connections (num_threads + (num_threads > > 3)) {} void run () Void handle_request (RGWRequest* req);}

So num_threads controls the number of max_connections, and if you want to increase the maximum number of concurrency of a single rgw process, you need to increase rgw_thread_pool_size.

After reading the above, do you have any further understanding of how to use source code interpretation to improve the maximum number of concurrency of RGW? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.