Re: Apache::ASP / memory leak?

2000-10-06 Thread Joshua Chamas

Jim Turner wrote:
> 
> Greetings,
> 
> I am using Apache 1.3.9 on Linux kernel 2.0.36 using
> ApacheASP wrapped around my CGI scripts.  I have the following
> test script which works fine unless I declare the array variable
> "v" as "my @v".  This causes massive memory consumption in that
> much more memory is allocated each time the script is run, even
> though only 2 instances are actually run.  If "v" is NOT declared
> as "my", it seems to work fine (1st 2 invocations load up and
> scarf up memory, but after that, things run fine).  Can anyone
> tell me why this is?
> 

I'm not sure why in this case as your code below 
looks fine.  I would advise though that you move
your subroutine into a perl module or your 
global.asa, as subroutines in ASP scripts can
be tricky because an ASP script itself is compiled
as a subroutine, and variable scoping problems 
can result.  See my closure problems in the
modperl guide http://perl.apache.org/guide
which Apache::ASP shares with Apache::Registry.

> --
> Here is my ASP file:
> --
> <%
> 
> 
> 
> %>

BTW, this use of the include mechanism was never
intended to work by me, and am well impressed that you 
came up with another use!  Beautiful.  More below.

> --
> Here is my test script (runs as CGI, FAST-CGI, and ASP):
> --
> #!/usr/bin/perl
> 
> if ($0 =~ /\.asp/i)
> {
> $runtype = 2;  #RUNNING AS ASP!
> }
> elsif ($0 =~ /\.fpl/i)
> {
> $runtype = 1;  #RUNNING AS FAST-CGI!
> }
> else
> {
> $runtype = 0;  #RUNNING AS REGULAR CGI!
> }
> 
> require 'global.asa';
> 

You only need to require global.asa if you are
not running as an ASP script, as Apache::ASP 
effectively does this for you.

BTW, it looks like you are setting up a benchmarking
testbed on your server.  I would be interested 
in how you find FastCGI to perform against 
Apache::ASP.  If you are up for running the hello world
tests, you can add some data to what we have at
  http://www.chamas.com/bench/

Note one of the advantages of Apache::ASP is its
rich object API, which incurs some overhead setting
up, so there is an ease of development vs. performance 
trade-off here.  You will find for example that 
Apache::Registry scripts run CGIs faster than
Apache::ASP will because of this overhead.  If you 
just want CGI emulation, I would stick with Registry.

--Joshua

> srand($$);
> my ($randpid) = $$;
> 
> $mainloop = 0;
> mainloop:  while ($runtype != 1 || new CGI::Fast)
> {
> last  if ($mainloop && $runtype != 1);
> ++$mainloop;
> ++$runcnt;
> $randpid = int(rand());
> &Home();
> }
> 
> sub Home
> {
> print &CGI::header()  unless (shift);
> 
> print "PID=$$= rc=$runcnt=\n";
> my @v = ();
> for (my $i=0;$i<=15;$i++)
> {
> push (@v, $i);
> }
> print "1st=$v[0]= last=$v[15]=\n";
> }
> 
> --
> Here is my global.asa
> --
> use CGI::Fast qw(:standard);
> use CGI qw(:standard);
> 
> sub Application_OnStart
> {
> }
> 
> 1;
> --
>



Apache::ASP / memory leak?

2000-10-06 Thread Jim Turner

Greetings,

I am using Apache 1.3.9 on Linux kernel 2.0.36 using 
ApacheASP wrapped around my CGI scripts.  I have the following 
test script which works fine unless I declare the array variable 
"v" as "my @v".  This causes massive memory consumption in that 
much more memory is allocated each time the script is run, even 
though only 2 instances are actually run.  If "v" is NOT declared 
as "my", it seems to work fine (1st 2 invocations load up and 
scarf up memory, but after that, things run fine).  Can anyone 
tell me why this is?

Please reply via email ([EMAIL PROTECTED])

Thanks in advance!
Jim Turner


Here is my ASP config:
--

SetHandler perl-script
PerlHandler Apache::ASP
PerlSetVar Global .
PerlSetVar Debug 0
PerlSetVar NoState 1

--
Here is my ASP file:
--
<%



%>
--
Here is my test script (runs as CGI, FAST-CGI, and ASP):
--
#!/usr/bin/perl

if ($0 =~ /\.asp/i)
{
$runtype = 2;  #RUNNING AS ASP!
}
elsif ($0 =~ /\.fpl/i)
{
$runtype = 1;  #RUNNING AS FAST-CGI!
}
else
{
$runtype = 0;  #RUNNING AS REGULAR CGI!
}

require 'global.asa';

srand($$);
my ($randpid) = $$;

$mainloop = 0;
mainloop:  while ($runtype != 1 || new CGI::Fast)
{
last  if ($mainloop && $runtype != 1);
++$mainloop;
++$runcnt;
$randpid = int(rand());
&Home();
}

sub Home
{
print &CGI::header()  unless (shift);

print "PID=$$= rc=$runcnt=\n";
my @v = ();
for (my $i=0;$i<=15;$i++)
{
push (@v, $i);
}
print "1st=$v[0]= last=$v[15]=\n";
}

--
Here is my global.asa
--
use CGI::Fast qw(:standard);
use CGI qw(:standard);

sub Application_OnStart
{
}

1;
--




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