Hello. I found that CURLMOPT_TIMERFUNCTION callback is often called with 0 value. This happens when resolver thread is working. What for?
Because of this the main thread makes a lot of empty calls: 1) timer_callback 2) select (epoll) with 0 second 3) curl_multi_socket_action with CURL_SOCKET_TIMEOUT and again timer_callback many times CPU is used on 100% if resolver do not found info in cache. I found what https://curl.haxx.se/libcurl/c/hiperfifo.html worked similarly. 300 system calls (kevent, epoll) are for one url. And 52 system calls before as file /etc/resolv.conf is opened. How do I solve this problem? Nick. ------------------------------------------------------------------- Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library Etiquette: https://curl.haxx.se/mail/etiquette.html
