Thank you for your answer, but this doesn't fix my problem.
Run your fixed script and we get the same behavior:
$ perl test-chldhandle-bug-fixed.pl init... pid=29713 while... fork 1 end... pid=29716 receive chld fork 2 end... pid=29717 receive chld 2014-03-17 11:10:37.234+0000: 29713: info : libvirt version: 1.0.5.7, package: 2.fc19 (Fedora Project, 2013-11-17-23:21:57, buildvm-18.phx2.fedoraproject.org) 2014-03-17 11:10:37.234+0000: 29713: warning : virNetTLSContextCheckCertificate:1099 : Certificate check failed Certificate [session] owner does not match the hostname 10.10.4.249 connection open fork 3 end... pid=29827 fork 4 end... pid=29930 go next...
In my daemon version, i also use waitpid for child treatment.
Regards,
-- Carlos Rodrigues Engenheiro de Software Sénior Eurotux Informática, S.A. | www.eurotux.com (t) +351 253 680 300 (m) +351 911 926 110 |
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
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