Re: Reverse engineered HTML
On Tue, May 15, 2001 at 07:42:11AM -0400, Paul Cotter wrote: Does a package exist that will read an HTML document and generate an Apache::Registry cgi script? Even better if it accepts an !--Perl tag. Am I missing something? It's as simple as undef $/; $a=FILEHANDLE; print $a How you handle the header is a separate matter.
Re: modify Server header via a handler
randal s. posted a way to do that
sometime back. search for it in
the archive. his stonehenge
website apparently uses the same trick.
On Tue, May 01, 2001 at 02:51:14PM -0400, Richard Chen wrote:
I would like to customize or suppress the Server header
from the modperl server responses such as this:
Server: Apache/1.3.19 (Unix) mod_perl/1.25 mod_ssl/2.8.1 OpenSSL/0.9.6
I thought I could simply set up a Fixup handler to do this:
package NoServerInfo;
use Apache::Constants qw(:common);
sub handler {
my $r=shift;
$r-header_out(Server = 'Foo Bar');
return OK;
}
1;
But this does not seem to work. Is there some kind of restriction
about this particular header in modperl? Without modifying
the source code, is there a way to customize this Server header field?
Thanks for any info
Richard
Re: apache::registry + use strict curiosity
that's no apache::registry. that's perl
there are big guns here who can answer
your questions but it am not one of them.
On Thu, Apr 26, 2001 at 02:25:17PM -0700, Eric Kolve wrote:
I found something a bit curious that I was wondering if someone could
explain. I have the following apache::registry script I called test.reg:
#!/usr/bin/perl
use strict;
if($test){
# do stuff
}
print qq|HTTP/1.1 200 OK\r\n|;
print HELLO WORLD\n\n;
I ran my server in single-user mode (httpd -X) and requested the page
which causes an internal server error because I didn't declare '$test'.
I next commented out the three conditional lines:
#if($test){
# do stuff
#}
Then requested the page a second time, which executed just fine. I
uncommented those three lines and requested the page a third time, which
strangely enough actually works. Registry stats pages to see if they
change and recompiles pages I believe. So I am wondering why isn't an
exception raised on the third request about not declaring '$test'? Did
the first request put '$test' in the symbol table?
thanks,
--eric
What is the difference: PerlRun and MaxRequestsPerChild 1
I recently began to experience many lingering mod_perl processes which slow down my tcp connection. I use Apache::Registry for all my mod_perl need. Not the real handler. The practical solution I found was to cut down the number MaxRequestPerChild and kill off the processes after a few requests. I understand that Apache::PerlRun has the overhead of compiling each script with a new request. I would like to know whether there is a compilation overhead if I set say MaxRequestsPerChild 1 ?? I was also thinking that because the script is loaded from the disk with each request there will be performance degradation because of disk data ransfer rate will be order of magnitude less than if the script were to remain in the memory all the time. That leads me to think about using very cool RAMFS that comes linux-2.4. What does everyone think about using RAMFS to reduce the performance degradation due to loading script from the disk if there is one. I have over 100 scripts altogether but the total size of them is less than 1 MB and I have plenty of memory. Thanks in advance
Re: What is the difference: PerlRun and MaxRequestsPerChild 1
On Wed, Apr 25, 2001 at 12:10:01PM +0100, G.W. Haywood wrote: Hi there, On Wed, 25 Apr 2001 [EMAIL PROTECTED] wrote: like to know whether there is a compilation overhead if I set say MaxRequestsPerChild 1 ?? http://perl.apache.org/guide I have read the guide cover to cover long ago :) You can use ramdisks with almost *any* Linux. Ah.. ramdisk and ramfs are different animals
Re: What is the difference: PerlRun and MaxRequestsPerChild 1
Thanks. I think that is what I really need :) On Wed, Apr 25, 2001 at 08:19:21PM +0800, Stas Bekman wrote: the two events contrudict and lead to the need to re-read the guide, and especially this section: http://perl.apache.org/guide/performance.html#Preloading_Registry_Scripts_at_S :) _ Stas Bekman JAm_pH -- Just Another mod_perl Hacker http://stason.org/ mod_perl Guide http://perl.apache.org/guide mailto:[EMAIL PROTECTED] http://apachetoday.com http://eXtropia.com/ http://singlesheaven.com http://perl.apache.org http://perlmonth.com/
Re: What is the difference: PerlRun and MaxRequestsPerChild 1
On Wed, Apr 25, 2001 at 07:19:25PM +0800, Stas Bekman wrote: if I set say MaxRequestsPerChild 1 ?? Not if you preload your scripts at the server startup. But then you pay the price of the time to spawn a new process, which has a very little overhead under low load since Apache preforks processes (assuming that you have MaxSpareServers set to a reasonable number). Under very high load your machine will spend a lot of CPU, spawning processes, which is not good. I have lots of custom modules that I preload with startup.pl. Still I have many scripts that run under Apache::Registry. Not exactly sure how to preload these scripts. I have the following directive PerlTaintCheck On IfModule mod_perl.c Location / # PerlSetVar PerlRunOnce On SetHandler perl-script PerlRequire /home/apache/modperl/startup.pl PerlHandler Apache::Registry # PerlSendHeader On Options +ExecCGI /Location /IfModule Note: this is a dedicated mod_perl server and I'm not serving any static pages. - Document root / contains 100 perl scripts. I preload 40 modules (of which 29 is my own custom modules) in startup.pl as explained in your guide. So I guess I don't understand what you mean by preloading scripts. One of the reasons I like having 100 scripts in document root with Apache::Registry is that I can modify them at any time and I don't have restart the server. This is also one of the reasons I don't bother with the real handler. Thanks
Re: Apache growing (memory)
On Wed, Apr 25, 2001 at 10:02:06AM -0400, Brendan McAdams wrote: Our application performance actually improved across the board when we implements MaxRequests... (This Do you have numbers to back this up? How does reading in a new script every now and then IMPROVE anything compared to keeping in memory all the time? It's not like perl gets tired after using the same memory all the time. Memory leakage is a separate issue which I don't seem to be able to solve any how with use strict and I'm not using any global variables at all.
Re: Problem building on Solaris 2.7
Stead of DSO why don't you compile statically. On Tue, Apr 24, 2001 at 02:47:55PM -0700, Mod-Perl List wrote: I am trying to build mod_perl 1.25 as a DSO on Solaris 2.7 and when I execute perl Makefile.PL, it says I will probably get core dumps and to upgrade to perl 5.6. I am running Perl 5.005_03, the latest considered stable on Solaris 2.7. I cannot upgrade to 5.6 due to heavy perl code already on this machine. Can anyone point me in the right direction? Thanks, CC
Re: problems with make test, server not starting
On Thu, Dec 28, 2000 at 09:58:41PM +, Richard wrote: On Thu, 28 Dec 2000, you wrote: Screw the tests. Mine fails all the time, I just type 'make install' and it all works perfectly. Hmn, just tried that. my httpd.conf file did not seem to change, i setup a location directive for Apache::Status to see if it was all ok, but get a config error telling me it does not understand PerlHandler. Would that suggest that i am trying to start a non mod_perl enabled apache? :-( i don't want to grab an RPM. Richard
Re: Linux Hello World Benchmarks: +PHP,JSP,ePerl
On Mon, Dec 18, 2000 at 10:37:16AM -0800, Joshua Chamas wrote: Please feel free to run the tests yourself, and if you give me the results, I'll be sure to post them at a later date at http://www.chamas.com/bench/ . You can grab the benchmarks from http://www.chamas.com/bench/hello.tar.gz I downloaded the tar ball just to fool around on my system. It will be nice to have a README file with a short instruction set. Do you compile apache for each test or do you just use one size fits all apache with everything compiled in?
Re: Linux Hello World: TT Optimized...
On Mon, Dec 11, 2000 at 10:14:56PM -0800, Joshua Chamas wrote: [EMAIL PROTECTED] wrote: Could you please explain the differences between CGI Raw and CGI.pm? I'm using oo method of CGI. The Raw CGI test makes no use of CGI.pm, just issues raw print statements that sets up the right CGI headers. Please note that the number that I reported showed a difference of .00065 seconds of system time per request between CGI.pm Raw CGI HelloWorld, so I wouldn't much worry about the environment overhead. Oh you meant cgi. CGI should be reserved for CGI.pm stuff. I don't use CGI's html functions at all because I just don't see much saving in terms of typing. I guess I am in between your 'RAW' case and CGI.pm case I only use CGI's param,header,cookie and redirect functions and DISABLE_UPLOADS and POST_MAX variables. Given that real handler is the second best performer after static html I wonder how big of a step from using Registry to writing a handler. I know I can rely on CGI because it is time tested. I wonder whether there are CGI equivalent modules if I don't use handler. I read earlier that CGI alternatives have some problems. If you are using CGI.pm object methods, I would worry about calling all those methods to build your HTML and if you are performance minded, I would use them frugally. --Josh
Re: Mod_perl vs mod_php
Maybe he meant php hello world vs perl hello world? On Tue, Dec 12, 2000 at 01:16:59PM -0800, Randal L. Schwartz wrote: "Jimi" == Jimi Thompson [EMAIL PROTECTED] writes: Jimi Does anyone have any mod_perl vs. mod_php benchmarks? Perl code gets 0 performance on PHP. PHP code likewise gets 0 performance on Perl. Given that, you've got to write different code on both, and you can probably always come up with enough variance that you can make benchmarks show whatever you want them to show. Given *that*, what's your real question? -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training!
Re: Mod_perl vs mod_php
On Tue, Dec 12, 2000 at 02:53:30PM -0800, Randal L. Schwartz wrote: "newsreader" == newsreader [EMAIL PROTECTED] writes: newsreader Maybe he meant php hello world vs perl hello world? And the point of such a comparison would be... what? it will be to publish in your favorite magazine/web site/mailing list/whatever Did you miss chamas' hello world thread? I don't really care for benchmark myself but your point they way I understand was that it was not possible to make benchmark comparison. In fact in theory it is possible even beyond hello world. Take two programmers from perl and php worlds and give them the same problem. It *is* possible to make a comparison of the resultant applications. Purely technical comparison. The real costs of a web application these days are the total product Now you are talking about something other than technical comparison. Wouldn't that be like saying "ferrari has a bigger top speed than corolla does but so what corolla gets better gas mileage." It all depends on how benchmark is to be used. transactions-per-second is an important factor that determines whether or not somebody will come back to your site, I think. So if you are shooting for yahoo like numbers maybe you should start thinking transaction-per-second. you are the one who frequently touts the virtue of writing a real handler instead of using registry?? what is your point about such energetic touting? What I really like to see compared is the development time of php vs perl code for a given problem. I've read ad nauseam about perl development time being shorter than C. How does php compare to perl in this regard, I wonder. costs, not the transactions-per-second costs. Until you're getting Yahoo-number hits, does it really matter whether something takes 1 second vs 3 seconds to process? And even then, shouldn't you be more worried about which of these two systems better supports 304 responses and data caching and dependency tracking, instead of which one executes a useless static page faster? -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training!
Re: Linux Hello World: TT Optimized...
Could you please explain the differences between
CGI Raw and CGI.pm? I'm using oo method of
CGI.
Thanks
On Mon, Dec 11, 2000 at 07:56:03PM -0800, Joshua Chamas wrote:
Hey,
Updated results from the other day with the Template Toolkit
benchmark properly optimized, thanks Perrin!
The reference for these numbers is at: http://www.chamas.com/bench
If you would like the hello test suite, please email me separately.
]# ./bench.pl -time=60
Test Name Test FileHits/sec Total Hits Total Time
sec/Hits
Apache::ASP hello.asp 414.1 24846 hits 60.00 sec
0.002415
Apache::Registry CGI Raw hello_raw.re 741.7 44502 hits 60.00 sec
0.001348
Apache::Registry CGI.pm hello.reg 500.0 30001 hits 60.00 sec
0.002000
HTML Static hello.html 1215.7 5 hits 41.13 sec
0.000823
HTML::Embperl hello.epl 509.6 30579 hits 60.00 sec
0.001962
HTML::Mason hello.mas 385.9 23153 hits 60.00 sec
0.002592
ModPerl Handler hello.bench 885.8 5 hits 56.45 sec
0.001129
Template Toolkit hello.tt 560.3 33622 hits 60.01 sec
0.001785
-- Josh
_
Joshua Chamas Chamas Enterprises Inc.
NodeWorks free web link monitoring Huntington Beach, CA USA
http://www.nodeworks.com1-714-625-4051
Re: persistent connections for handlers
I'm also interested in this problem. I've
been piping my mails to sendmail and I'm
told that this is not a good idea with mod_perl.
I find that talking to SMTP server is noticeably
slower although I don't know whether the slowness is
just in the initial connection. I am using the local
sendmail daemon as the SMTP server.
On Sat, Dec 09, 2000 at 11:05:50AM -0500, John Saylor wrote:
Hi
I am writing a mod_perl handler that takes a HTTP POST and sends mail. What
I'd like to do is to open up a connection to the SMTP server [a Net::SMTP
object] and a log file [filehandle] that exist outside of the handler. So
that when the handler is run, it has access to these items, and can send
data to them, but that they don't get opened up and brought down each time.
Right now, I have them being set up [and torn down] in BEGIN {} and END {}
blocks. The code doesn't complain, and it sends the right thing back to the
browser, but nothing gets mailed or written to the log. I can post the code,
but I was hoping that this problem is generic enough [and my description
good enough] that someone can point me in the right direction without the
details of the code.
My question is this: how do you set up persistent connections that a handler
can use, but ones that don't get initalized each time the handler is called?
Are these just file [package] scoped globals?
Do I need subroutines to check the status of these objects/handles and
reinitialize them as needed?
Is there another way?
Any pointers, suggestions, or non-sequitors are welcome, thanks.
--
\js
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Re: perl's memory leak
The output I get is
used memory = 0
used memory = 0
used memory = 0
used memory = 0
used memory = 0
I'm interested in how many leaks are possible in mod_perl
though because my mod_perl processes are getting bigger
with time -- about 200 requests is making the process
fatter by 1mb on the average. I'm watching to see if
they will max out around the current level of 10 mb per child.
On Thu, Dec 07, 2000 at 07:53:16PM +0300, Ivan E. Panchenko wrote:
Today I discovered a strange behaiviour of perl,
and I wonder if anybody can tell me what to do with it.
The matter is that perl DOES NOT REUSE MEMORY allocated for
intermediate calculation results. This is specially harmful to
data-intensive modperl applications where one perl process processes
many queries and can leak great amount of memory.
The example is below:
use BSD::Resource;
my $cc = 'a' x 2000 ;# alocates 20Mb for the right part and
# 20Mb for $a
p;
{ my $a = $cc.'x'; # allocates 20 more Mb for right part
# and 20 for a
p;
undef $a;# deallocates $a
}
p;
{ my $b = $cc.'y'; # allocates 20 more Mb for right part
# and reuses deallocated 20Mb for b
p;
undef $b;
}
p;
sub p {
print STDERR "used memory = ".(BSD::Resource::getrusage)[2]."\n"
}
# end of example.
Output:
used memory = 40772
used memory = 79804
used memory = 80068
used memory = 99676
used memory = 99700
##
Here I used BSD:Resource to measure consumed memory. Its result seems to
be correlated with the amount of memory taken by the process from the OS.
#
This was checked on FreeBSD 3.4 and 4.2 ; and perl5.00405 5.00503 .
Same things where noticed on Linux and probably on Solaris too.
Ivan
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Re: Apache 1.3.14 build
They say mod_perl 1.24_01 (not 1.24) is to be used with apache 1.3.14 On Tue, Dec 05, 2000 at 04:02:42PM -0600, Wang, Pin-Chieh wrote: I am trying to build apache v.1.3.14 with Mod_perl v. 1.24 using APACI I am using Perl 5.6 build 620 - the latest I ran perl Makefile.PL under mod_perl-1.24 directory The system created Makefile in support,regex. directories but terminated prematually with warning message for "Apache Version 1.3.0 required, aborting.." Any body knows why? Should I go back to Apache 1.3.0? Thanks for any help PC Wang - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Order of Installation!!!
It's not enough to just install the modules. Did you configure the httpd.conf with mod_perl as explained in the documentation? On Fri, Dec 01, 2000 at 03:40:45PM -0200, Edmar Edilton da Silva wrote: Hi all, I have installed on my machine the following modules: apache 1.3.12-2 mod_perl 1.21-10 DBI 1.13-1 DBD::Oracle 1.03 Apache::DBI 0.86-1 The problem is that when I run a perl script under mod_perl, the response time is almost the same than the response time of the same script being ran without the mod_perl module. And I know that mod_perl was correctly installed. Another problem is that I can not open database connections when the WWW server starts because happen an error in the child processes of the apache. I think can there is some problem in the installation or configuration of the modules. Did the order for installing of the modules do any difference? If someone help me will be very appreciated. Thanks... -- Edmar Edilton da Silva Bacharel em Ciência da Computacão - UFV Mestrando em Ciência da Computacão - UNICAMP - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: no such file or directory
Actucally 'file' has always been '/full/path/to/file' because my path in most of my scripts are empty and I have the taintcheck on. Besides they were working under mod_perl for a full week. It's weird that I can now make them work by converting every dbmopen to tie. It seems that perl suddenly decides not to like dbmopen function any more. This function still works for other scripts not running as httpd though. On Thu, Nov 30, 2000 at 07:45:45AM +, G.W. Haywood wrote: Hi there, On Wed, 29 Nov 2000 [EMAIL PROTECTED] wrote: I have this mysterious problem of my mod_perl scripts giving errors like no such file or directory when I know for a fact that files and directory are there. dbmopen %A,'file',0644 Try dbmopen %A,'/full/path/to/file',0644 73, Ged. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
no such file or directory
Hi People I have this mysterious problem of my mod_perl scripts giving errors like no such file or directory when I know for a fact that files and directory are there. The files are berkeley db file. The problems first show up in the midst of doing multiple recompiling and reinstallation of mod_perl and apache. They mysteriously disappeared after repeatedly invoking the scripts. However today I attempted changed one of my supposedly obselete dbmopen functions to tie functions and they came right back. So I immediately reinstall the old version. The problems is still there All I did was change dbmopen %A,'file',0644 to use DB_File; tie %A,'file.db' They work fine on the command line. I have mod_perl 1.24_01 apache 1.3.14 linux 2.2.17. I can post more info if necessary Thanks - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
