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Posted to modperl@perl.apache.org by pradeep kumar <pr...@gmail.com> on 2006/01/20 14:52:14 UTC
[mp2] Script replaces the process name with its own name
Hi,
When I run a script say yyy.pl using ab then one of the child process name
is changed to that of the script.
#cat yyyp.pl
#!/opt/perl/bin/perl
sleep 20;
print "test\n";
This is just after the script is started.
# ps -ef | grep www
www 4028 4026 0 17:17:45 ? 0:00 /opt/hpws/apache/bin/httpd
-k start
kumar 4333 4033 1 17:43:25 pts/1 0:00 grep www
www 4027 4026 0 17:17:45 ? 0:00
/opt/hpws/apache/cgi-bin/yyy.pl
And this is the way it looks later(after the script ends):
# ps -ef | grep www
kumar 4366 4033 1 17:47:50 pts/1 0:00 grep www
www 4028 4026 0 17:17:45 ? 0:00 /opt/hpws/apache/bin/httpd
-k start
www 4027 4026 0 17:17:45 ? 0:00 /opt/hpws/apache/bin/httpd
-k start
Is this behaviour normal and expected or is this a bug?
Regards,
Pradeep
Re: [mp2] Script replaces the process name with its own name
Posted by "Philippe M. Chiasson" <go...@ectoplasm.org>.
pradeep kumar wrote:
> Hi,
>
> When I run a script say yyy.pl using ab then one of the child process
> name is changed to that of the script.
>
> #cat yyyp.pl
> #!/opt/perl/bin/perl
> sleep 20;
> print "test\n";
>
> This is just after the script is started.
> # ps -ef | grep www
> www 4028 4026 0 17:17:45 ? 0:00
> /opt/hpws/apache/bin/httpd -k start
> kumar 4333 4033 1 17:43:25 pts/1 0:00 grep www
> www 4027 4026 0 17:17:45 ? 0:00
> /opt/hpws/apache/cgi-bin/yyy.pl
>
> And this is the way it looks later(after the script ends):
> # ps -ef | grep www
> kumar 4366 4033 1 17:47:50 pts/1 0:00 grep www
> www 4028 4026 0 17:17:45 ? 0:00
> /opt/hpws/apache/bin/httpd -k start
> www 4027 4026 0 17:17:45 ? 0:00
> /opt/hpws/apache/bin/httpd -k start
>
> Is this behaviour normal and expected or is this a bug?
This is basically a feature. For compatibility with plain CGIs, ModPerl::Registry
sets $0 to the script name. And whenever Perl can do it, changing $0 also changes
the process name.
--------------------------------------------------------------------------------
Philippe M. Chiasson m/gozer\@(apache|cpan|ectoplasm)\.org/ GPG KeyID : 88C3A5A5
http://gozer.ectoplasm.org/ F9BF E0C2 480E 7680 1AE5 3631 CB32 A107 88C3A5A5
Re: [mp2] Script replaces the process name with its own name
Posted by Tom Schindl <to...@gmx.at>.
Hi,
a bit more information would help:
- what version of mp are you using
- how does you config look like
- how do you invoke ab?
Tom
pradeep kumar wrote:
> Hi,
>
> When I run a script say yyy.pl using ab then one of the child process
> name is changed to that of the script.
>
> #cat yyyp.pl
> #!/opt/perl/bin/perl
> sleep 20;
> print "test\n";
>
> This is just after the script is started.
> # ps -ef | grep www
> www 4028 4026 0 17:17:45 ? 0:00
> /opt/hpws/apache/bin/httpd -k start
> kumar 4333 4033 1 17:43:25 pts/1 0:00 grep www
> www 4027 4026 0 17:17:45 ? 0:00
> /opt/hpws/apache/cgi-bin/yyy.pl
>
> And this is the way it looks later(after the script ends):
> # ps -ef | grep www
> kumar 4366 4033 1 17:47:50 pts/1 0:00 grep www
> www 4028 4026 0 17:17:45 ? 0:00
> /opt/hpws/apache/bin/httpd -k start
> www 4027 4026 0 17:17:45 ? 0:00
> /opt/hpws/apache/bin/httpd -k start
>
> Is this behaviour normal and expected or is this a bug?
>
> Regards,
> Pradeep
>
>