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Posted to modperl@perl.apache.org by Perrin Harkins <pe...@elem.com> on 2005/05/11 16:54:02 UTC
Re: [QUESTION] Browser hangs if multiple requests on the same Perl
resource (Apache2, modperl2, Win32)
On Wed, 2005-05-11 at 15:55 +0200, Pascal.Davoust@alcatel.fr wrote:
> Server Version: Apache/2.0.54 (Win32) mod_ssl/2.0.54 OpenSSL/0.9.7g
> mod_auth_sspi/1.0.1 mod_perl/1.999.21 Perl/v5.8.6
Does it happen without mod_auth_sspi?
- Perrin
RE: [QUESTION] Browser hangs if multiple requests on the same Perlresource (Apache2, modperl2, Win32)
Posted by Pa...@alcatel.fr.
Thanks a million, Stas.
So it looks that this is either a problem on my config parameters, or maybe
that the problem occurs only when running on *Windows* (I'm running Apache2
and modperl2 on WinXP)...
Any hint about what could break in this specific situation ? Or known issues
with Apache2+modperl2 on this platform which is not documented in the
current FAQ and troubleshooting docs of modperl?
Thanks again,
Pascal.
Re: [QUESTION] Browser hangs if multiple requests on the same Perlresource
(Apache2, modperl2, Win32)
Posted by Stas Bekman <st...@stason.org>.
Stas Bekman wrote:
> Pascal.Davoust@alcatel.fr wrote:
>
>> Hi,
>>
>> I'm still experiencing this problem. Could someone try to reproduce
>> (this is
>> done in 5mn) so I can be sure it's either my fault or a bug ?
>
>
> Pascal, please let me know how to reproduce it and I'll try it.
I've attached the tarball that one could try reproduce the problem with.
unpack, then:
perl Makefile.PL
t/TEST -conf
t/TEST -start
ab -c 10 -n 100 http://localhost:8529/perl-bin/bug.pl
t/TEST -stop
But no problem on linux:
~/httpd/prefork/bin/ab -c 20 -n 2000 http://localhost:8529/perl-bin/bug.pl
This is ApacheBench, Version 2.0.41-dev <$Revision: 1.121.2.12 $> apache-2.0
Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright (c) 1998-2002 The Apache Software Foundation, http://www.apache.org/
Benchmarking localhost (be patient)
Completed 200 requests
Completed 400 requests
Completed 600 requests
Completed 800 requests
Completed 1000 requests
Completed 1200 requests
Completed 1400 requests
Completed 1600 requests
Completed 1800 requests
Finished 2000 requests
Server Software: Apache/2.0.55-dev
Server Hostname: localhost
Server Port: 8529
Document Path: /perl-bin/bug.pl
Document Length: 1242 bytes
Concurrency Level: 20
Time taken for tests: 1.834204 seconds
Complete requests: 2000
Failed requests: 0
Write errors: 0
Total transferred: 2901450 bytes
HTML transferred: 2485242 bytes
Requests per second: 1090.39 [#/sec] (mean)
Time per request: 18.342 [ms] (mean)
Time per request: 0.917 [ms] (mean, across all concurrent requests)
Transfer rate: 1544.54 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 1
Processing: 2 17 2.5 17 36
Waiting: 1 17 2.4 17 36
Total: 2 17 2.5 17 36
Percentage of the requests served within a certain time (ms)
50% 17
66% 18
75% 18
80% 19
90% 21
95% 23
98% 24
99% 25
100% 36 (longest request)
--
__________________________________________________________________
Stas Bekman JAm_pH ------> Just Another mod_perl Hacker
http://stason.org/ mod_perl Guide ---> http://perl.apache.org
mailto:stas@stason.org http://use.perl.org http://apacheweek.com
http://modperlbook.org http://apache.org http://ticketmaster.com
Re: [QUESTION] Browser hangs if multiple requests on the same Perlresource
(Apache2, modperl2, Win32)
Posted by Stas Bekman <st...@stason.org>.
Pascal.Davoust@alcatel.fr wrote:
> Hi,
>
> I'm still experiencing this problem. Could someone try to reproduce (this is
> done in 5mn) so I can be sure it's either my fault or a bug ?
Pascal, please let me know how to reproduce it and I'll try it.
--
__________________________________________________________________
Stas Bekman JAm_pH ------> Just Another mod_perl Hacker
http://stason.org/ mod_perl Guide ---> http://perl.apache.org
mailto:stas@stason.org http://use.perl.org http://apacheweek.com
http://modperlbook.org http://apache.org http://ticketmaster.com
RE: [QUESTION] Browser hangs if multiple requests on the same Perlresource (Apache2, modperl2, Win32)
Posted by Pa...@alcatel.fr.
Hi,
I'm still experiencing this problem. Could someone try to reproduce (this is
done in 5mn) so I can be sure it's either my fault or a bug ?
Thanks in advance,
Pascal.
RE: [QUESTION] Browser hangs if multiple requests on the same Perlresource (Apache2, modperl2, Win32)
Posted by Pa...@alcatel.fr.
I've just seen thread "Vanishing Requests", and it looks quite close to what
I've witnessed.
mod_log_forensic was suggested in this thread above, so I followed this
suggestion and enabled it.
I restarted Apache and ran ApacheBench twice on a (big) Perl resource with 4
simultaneous requests. Some requests get in Apache but are never responded
back... See IDs Ce7WPqwaKB0AAB4ILmYAAAD2 and DKPMyKwaKB0AAB4ILmoAAAD1 in the
log file below.
This behaviour occurs also on the simplistic Perl script I described in my
original post.
Any suggestion, or steps I can do to troubleshoot further?
Thanks,
Pascal.
----- Begin forensic.log --------
+CK-jUawaKB0AAB4ILmIAAAD5|GET /status
HTTP/1.1|Accept:*/*|Accept-Language:en-us|Accept-Encoding:gzip,
deflate|User-Agent:Mozilla/4.0 (compatible; MSIE 6.0; Windows NT
5.0)|Host:frcold0061086.col.bsf.alcatel.fr|Connection:Keep-Alive
-CK-jUawaKB0AAB4ILmIAAAD5
+Ce3iJawaKB0AAB4ILmMAAAD5|GET /bin/view/Archi/WebHome
HTTP/1.0|User-Agent:ApacheBench/2.0.41-dev|Host:frcold0061086.col.bsf.alcate
l.fr|Accept:*/*
+Ce4fK6waKB0AAB4ILmQAAAD4|GET /bin/view/Archi/WebHome
HTTP/1.0|User-Agent:ApacheBench/2.0.41-dev|Host:frcold0061086.col.bsf.alcate
l.fr|Accept:*/*
+Ce5cMqwaKB0AAB4ILmUAAAD3|GET /bin/view/Archi/WebHome
HTTP/1.0|User-Agent:ApacheBench/2.0.41-dev|Host:frcold0061086.col.bsf.alcate
l.fr|Accept:*/*
+Ce7WPqwaKB0AAB4ILmYAAAD2|GET /bin/view/Archi/WebHome
HTTP/1.0|User-Agent:ApacheBench/2.0.41-dev|Host:frcold0061086.col.bsf.alcate
l.fr|Accept:*/*
-Ce5cMqwaKB0AAB4ILmUAAAD3
-Ce3iJawaKB0AAB4ILmMAAAD5
-Ce4fK6waKB0AAB4ILmQAAAD4
+DJt07KwaKB0AAB4ILmcAAAD4|GET /bin/view/Archi/WebHome
HTTP/1.0|User-Agent:ApacheBench/2.0.41-dev|Host:frcold0061086.col.bsf.alcate
l.fr|Accept:*/*
+DJ5ROKwaKB0AAB4ILmgAAAD5|GET /bin/view/Archi/WebHome
HTTP/1.0|User-Agent:ApacheBench/2.0.41-dev|Host:frcold0061086.col.bsf.alcate
l.fr|Accept:*/*
+DKCzd6waKB0AAB4ILmkAAAD3|GET /bin/view/Archi/WebHome
HTTP/1.0|User-Agent:ApacheBench/2.0.41-dev|Host:frcold0061086.col.bsf.alcate
l.fr|Accept:*/*
+DKPMyKwaKB0AAB4ILmoAAAD1|GET /bin/view/Archi/WebHome
HTTP/1.0|User-Agent:ApacheBench/2.0.41-dev|Host:frcold0061086.col.bsf.alcate
l.fr|Accept:*/*
-DJ5ROKwaKB0AAB4ILmgAAAD5
-DJt07KwaKB0AAB4ILmcAAAD4
-DKCzd6waKB0AAB4ILmkAAAD3
----- End forensic.log --------
RE: [QUESTION] Browser hangs if multiple requests on the same Perlresource (Apache2, modperl2, Win32)
Posted by Pa...@alcatel.fr.
Yes, it does also happen without mod_sspi. Just tried.
Pascal.
-----Message d'origine-----
De : Perrin Harkins [mailto:perrin@elem.com]
Envoyé : mercredi 11 mai 2005 16:54
À : Pascal.Davoust@alcatel.fr
Cc : modperl@perl.apache.org
Objet : Re: [QUESTION] Browser hangs if multiple requests on the same
Perlresource (Apache2, modperl2, Win32)
On Wed, 2005-05-11 at 15:55 +0200, Pascal.Davoust@alcatel.fr wrote:
> Server Version: Apache/2.0.54 (Win32) mod_ssl/2.0.54 OpenSSL/0.9.7g
> mod_auth_sspi/1.0.1 mod_perl/1.999.21 Perl/v5.8.6
Does it happen without mod_auth_sspi?
- Perrin