From: Richard Hartmann <richih.mailinglist@gmail.com>
Date: Wed, 7 Aug 2013 09:44:29 +0000 (+0200)
Subject: select.c: Improve comment
X-Git-Tag: v0.86~30^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=15b3338e97ddcd8b64ce2e90dad43bb52acd9eaf;p=thirdparty%2Fmtr.git

select.c: Improve comment

Be more verbose about why a longer timeout makes sense.
---

diff --git a/select.c b/select.c
index 9adec9b..e46d697 100644
--- a/select.c
+++ b/select.c
@@ -105,8 +105,12 @@ void select_loop(void) {
 
     do {
       if(anyset || paused) {
+	/* Set timeout to 0.1s.
+	 * While this is almost instantaneous for human operators,
+	 * it's slow enough for computers to go do something else;
+	 * this prevents mtr from hogging 100% CPU time on one core.
+	 */
 	selecttime.tv_sec = 0;
-	// timeout is 0.1s: Almost instantaneous for human operators.
 	selecttime.tv_usec = 100000; 
       
 	rv = select(maxfd, (void *)&readfd, &writefd, NULL, &selecttime);