Hi Tomás
Thanks for your hints! You wrote:
> output_with_http_headers is a function that calls the templates code.
> I would bet it is an IO problem.
>
> Please run iotop while reproducing the problem. I would expect to see
> some iowait.
I installed the command "iotop" and ran it when reproducing the problem.
But it shows nothing special:
Total DISK READ : 0.00 B/s | Total DISK WRITE : 0.00 B/s
Actual DISK READ: 0.00 B/s | Actual DISK WRITE: 0.00 B/s
TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND
64690 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.03 % [kworker/1:2]
64000 be/4 www-data 0.00 B/s 0.00 B/s 0.00 % 0.00 % apache2 -k start
1 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % init
2 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kthreadd]
3 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % ksoftirqd/0]
1540 be/4 Debian-g 0.00 B/s 0.00 B/s 0.00 % 0.00 % gnome-she~nf
worker]
5 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/0:0H]
> Do you have template_cache_dir set?
I added the following line in file "koha-conf.xml" just after the two
memcached lines:
<memcached_servers></memcached_servers>
<memcached_namespace></memcached_namespace>
<template_cache_dir>/tmp</template_cache_dir>
Then I restarted Koha. The problem persists. I couldn't find anything
special in directory "/tmp". But since I don't know what
"template_cache_dir" should do I don't know what to expect from it...
> Is it on a fast hard drive? You could try mounting a tmpfs filesystem
> in there and compare results.
The Koha host resides in a virtual machine (run by Hyper-V, using
Integrated Services). Unfortunately I have no direct access to the
console there.
> Also for debugging you should better use plack's tools instead:
>
> enable 'Debug', panels => [ qw(DBITrace Memory Timer) ];
>
> In plack.psgi and even the NTYProf panel. Maybe we need to improve the
> docs for this.
I added this line to file "plack.psgi" and restarted Koha. Koha wasn't
responding anymore but the file "plack-error.log" said:
Error while loading /etc/koha/plack.psgi: Can't locate
Plack/Middleware/Debug.pm in @INC (you may need to install the
Plack::Middleware::Debug module) (@INC contains:
/usr/share/koha/lib/installer /usr/share/koha/lib /etc/perl
/usr/local/lib/x86_64-linux-gnu/perl/5.20.2 /usr/local/share/perl/5.20.2
/usr/lib/x86_64-linux-gnu/perl5/5.20 /usr/share/perl5
/usr/lib/x86_64-linux-gnu/perl/5.20 /usr/share/perl/5.20
/usr/local/lib/site_perl .) at /etc/koha/plack.psgi line 29.
I tried to add "use Plack::Middleware::Debug;" to the file but it turned
out this Perl module isn't part of the Koha installation, so I installed it:
# apt-get install libplack-middleware-debug-perl
Then I activated the following lines in file "plack.psgi".
use Plack::Middleware::Debug;
...
enable 'Debug', panels => [ qw(DBITrace Memory Timer) ];
Then I restarted Koha. This gave me no additional output in logfile
"plack-error.log".
My time measurement still gives the following:
1. 12:45:14 START opac-user.pl / 1494420314.20786
2. 12:45:14 START opac-user.pl (right before function) / 1494420314.41777
* 4. 12:45:47 START function (in Output.pm) called by opac-user.pl
* 5. 12:45:47 END function (in Output.pm) called by opac-user.pl
* TIME function: 0.00157809257507324
6. 12:45:47 END opac-user.pl / 1494420347.53212
TIME : 33.3242571353912
When everything is done the following lines appear in file "plack.log".
178.238.175.156 - - [10/May/2017:14:45:47 +0200] "POST
/opac/opac-user.pl HTTP/1.1" 200 319007
"http://bibliothek.phsh.ch/cgi-bin/koha/opac-main.pl?logout.x=1";
"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:53.0) Gecko/20100101
Firefox/53.0"
178.238.175.156 - - [10/May/2017:14:45:48 +0200] "GET
/opac/errors/404.pl HTTP/1.1" 404 205852
"http://bibliothek.phsh.ch/cgi-bin/koha/opac-user.pl"; "Mozilla/5.0 (X11;
Ubuntu; Linux x86_64; rv:53.0) Gecko/20100101 Firefox/53.0"
178.238.175.156 - - [10/May/2017:14:45:48 +0200] "GET
/opac/errors/404.pl HTTP/1.1" 404 205852
"http://bibliothek.phsh.ch/cgi-bin/koha/opac-user.pl"; "Mozilla/5.0 (X11;
Ubuntu; Linux x86_64; rv:53.0) Gecko/20100101 Firefox/53.0"
Does this make some sense to you?
Best wishes: Michael (slowly going nuts...)
--
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