From d529f3882b9bca2c3eb32295dd6b2609d0c9b51f Mon Sep 17 00:00:00 2001 From: Daniel Stenberg Date: Sun, 14 Jul 2013 17:33:24 +0200 Subject: [PATCH] curl_easy_perform: gradually increase the delay time Instead of going 50,100,150 etc millisecond delay time when nothing has been found to do or wait for, we now start lower and double each loop as in 4,8,16,32 etc. This lowers the minimum wait without sacrifizing the longer wait too much with unnecessary CPU cycles burnt. Bug: http://curl.haxx.se/mail/lib-2013-07/0103.html Reported-by: Andreas Malzahn --- lib/easy.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/lib/easy.c b/lib/easy.c index 995328e1de5f6b..d84ecf541c3951 100644 --- a/lib/easy.c +++ b/lib/easy.c @@ -539,9 +539,7 @@ CURLcode curl_easy_perform(CURL *easy) if(curlx_tvdiff(after, before) <= 10) { without_fds++; if(without_fds > 2) { - int sleep_ms = without_fds * 50; - if(sleep_ms > 1000) - sleep_ms = 1000; + int sleep_ms = without_fds < 10 ? (1 << (without_fds-1)): 1000; Curl_wait_ms(sleep_ms); } }