Sometime I notice that qpsmtpd is very busy accepting new connections but
never getting around to processing them (before they timeout). I wonder if
anyone sees any value in being able to tweak the number of accept()s per event
loop cycle?
I tried the patch below with some success. As I understand it only accept()s
1 connection on the first event loop cycle and if there were outstanding
connections it doubles then # of accept()s from the last cycle until it hits
ACCEPT_MAX after which it goes back to 1 (via reset_num_accept()).
Comments?
--- contrib/qpsmtpd/qpsmtpd/qpsmtpd-async 2008-07-07 11:41:24.988192277
-0700
+++ smtpd/qpsmtpd 2008-04-10 11:20:21.066132565 -0700
@@ -44,16 +44,16 @@
my $USER = (getpwuid $>)[0]; # user to suid to
$USER = "smtpd" if $USER eq "root";
my $PAUSED = 0;
-my $NUMACCEPT = 20;
+my $NUMACCEPT = 1;
my $PID_FILE = '';
my $ACCEPT_RSET;
my $DETACH; # daemonize on startup
# make sure we don't spend forever doing accept()
-use constant ACCEPT_MAX => 1000;
+use constant ACCEPT_MAX => 8;
sub reset_num_accept {
- $NUMACCEPT = 20;
+ $NUMACCEPT = 1;
}
sub help {
