Re: [libvirt] Zombie process after open libvirt connection
On 17.03.2014 11:13, Carlos Rodrigues wrote:
Hello,
Does anyone can help me? I a need a solution for this, 'cause i have a
process/daemon, it reaches about 200 zombie processes, after open a new
libvirt connection with qemu+tls.
Best regards,
From the script you've attached:
$SIG{'CHLD'} = sub { print "receive chld","\n"; };
You should either waitpid() child here or at the end of the script. The
former approach won't leave any zombies hanging around, the latter
requires you to keep return values of fork(). So I think your script
needs to look like this:
$ diff -up test-chldhandle-bug.pl test-chldhandle-bug-fixed.pl
--- test-chldhandle-bug.pl 2014-03-17 11:59:48.972238074 +0100
+++ test-chldhandle-bug-fixed.pl 2014-03-17 12:03:08.693875968 +0100
@@ -5,10 +5,12 @@ use strict;
use Sys::Virt;
use POSIX qw(:signal_h);
+use POSIX ":sys_wait_h";
sub main {
print "init... pid=$$","\n";
- $SIG{'CHLD'} = sub { print "receive chld","\n"; };
+ $SIG{'CHLD'} = sub { my $kid; print "receive chld","\n";
+ do { $kid = waitpid(-1, WNOHANG); } while $kid > 0; };
while(1){
print "while...","\n";
Michal