Questions tagged [mpm-worker]
The mpm-worker tag has no usage guidance.
78
questions
300
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How do I select which Apache MPM to use?
This is a Canonical Question about selecting the right Apache httpd MPM.
I'm a little confused between the different MPMs offered by Apache - 'worker', 'event', 'prefork', etc.
What are the major ...
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56
votes
5
answers
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Which to install: Apache Worker or Prefork? What are the (dis-)advantages of each?
Based on the descriptions for both the Prefork and Worker MPM, it seems the prefork type is somewhat outdated, but I can't really find a proper comparison of the two types.
What i'd like to know:
...
- 8,509
30
votes
5
answers
92k
views
What is the meaning of "AH00485: scoreboard is full, not at MaxRequestWorkers"?
My Environment
CentOS 6.4 X86_64
Apache 2.4.4
PHP 5.4.16 (FPM)
2 Intel Xeon E5-2620 @ 2.00GHz (8 core, 16 threads in each processor)
48GB RAM registered memory.
3 Hard Disk 15RPM 145GB in RAID0 (by ...
- 461
20
votes
4
answers
61k
views
How can I change from prefork to worker MPM on CentOS 64bit?
I'm running CentOS 64 bit, and just found out I am running prefork MPM on my dual quad Xeon. I was told worker will give me lower memory usage and higher performance, since I run a very high traffic ...
- 1,665
19
votes
1
answer
10k
views
Apache 2.2 mpm_worker: more threads or more processes?
When using the Worker MPM in Apache, you can fiddle with the number of child processes and the number of server threads per child process.
What are the advantages and disadvantages of each? Under ...
- 6,838
9
votes
2
answers
2k
views
1GB VPS - Apache Worker MPM - FCGID - Max concurrent connections - RAM CAP
I have spent a week or two researching and setting up my server to run Apache with the Worker MPM and FCID. I am trying to optimize it to allow for the most concurrent connections possible. It has ...
- 89
6
votes
2
answers
4k
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worker MPM and PHP
I read a lot of posts saying I should't use worker MPM with PHP.
My question is whether this is still valid or could it be that working with the worker MPM is not recommended.
The reason I ask ...
- 449
4
votes
3
answers
16k
views
switching to worker mpm for apache 2 on ubuntu
How to switch from prefork mpm to worker mpm on ubuntu server?
how to roll back if there is any problem?
root@myserver:~# apache2ctl -l
Compiled in modules:
core.c
mod_log_config.c
mod_logio.c
...
- 835
4
votes
2
answers
4k
views
Relation between PHP-FPM settings and mpm_worker (Apache)
I've a site running Magento on the following setup:
Apache 2.4 with mpm_worker
PHP-FPM
Total RAM in server: 14GB (10GB avilable to Apache/PHP)
Each PHP-FPM process consumes approximately 80MB of RAM....
- 153
3
votes
2
answers
8k
views
Apache 2.2 eventually using all memory (worker mpm)
I'm tuning up a Apache 2.2 server (it's shared with MySQL + Courier + Mongo + Postgre). The server is bare metal (no virtualizataion) with 2 quad-core Xeon (total 16 core) and 12GB ECC RAM (upgrading ...
- 327
3
votes
1
answer
7k
views
Error enabling MPM Worker
I am struggling to enable MPM Worker
I uncommented #HTTPD=/usr/sbin/httpd.worker in /etc/sysconfig/httpd and restarted Apache but I am receiving these error:
Starting httpd: httpd.worker: Syntax ...
- 1,063
3
votes
1
answer
3k
views
How does apache handles connections and requests using worker and prefork mpm modules?
I know that prefork module in apache creates one master process and several child processes to handle connections, my question is:
Does each prefork child handles one connection or handles one ...
- 133
3
votes
1
answer
479
views
apache mpm_worker server failed to respond
I'm trying to update our current Apache 2.4.9 configuration from using prefork to worker mpm. I'm doing some simple load testing using jmeter to compare the performance between the 2. My first test is ...
- 31
2
votes
2
answers
4k
views
The apache2handler SAPI is not supported by pthreads
It has been weeks now that I cannot install pthreads. I am going to list the error logs then I will list my configuration options. These are the errors I get:(Apache Error Log)
The apache2handler ...
- 131
2
votes
1
answer
2k
views
Apache memory spikes, possible causes?
Last Friday (10/7/2011) we started having httpd.worker processes grow from the
typical 10-15M memory reserved to 10G+ (gigabytes) in a matter of 1-2 minutes. This obviously brings the server to a ...
- 49
2
votes
1
answer
2k
views
Apache MPM workers stuck in G (gracefully finishing) growing - "scoreboard is full"
Running MPM worker, Apache 2.4.46, Debian 9
Gracefully finishing workers just grows over time, they dont seem to ever finish. Eventually I run out of capacity and get "scoreboard is full" ...
- 147
2
votes
1
answer
11k
views
Apache HTTPD configuration for high load [duplicate]
Good day,
I want to be able to serve at least 7000 (preferably 10k) concurrent requests from my Apache Httpd. I have configured my httpd.conf with MPM worker with the following setup
ServerLimit ...
- 189
2
votes
0
answers
594
views
Configuring mod_wsgi daemon mode processes and threads
I am planning to use mpm_worker or mpm_event with daemon mode of mod_wsgi. How to configure processes and threads of WSGIDaemonProcess directive for the optimal performance of apache 2.4.9
- 241
2
votes
0
answers
416
views
Using Apache2 Worder MPM with Moodle
Is Moodle (I am using Moodle 2.5.2) compatible with Apache2 "Worker MPM" (in contrast to "Prefork MPM").
If it is indeed compatible, has has anyone tried both and is able to say which performs better ...
- 227
2
votes
0
answers
187
views
Apache worker mpm, one process and many threads: understanding performance
Got a mod_perl-written serverside program.
Im using shared apache worker mpm memory with one process only, and ~ 60 threads.
Im using locks to temporary secure the access to the shared memory, just 0....
- 21
1
vote
2
answers
2k
views
Viability of Apache (MPM Worker), FastCGI PHP 4/5.2/5.3, and MySQL 5
My server will be hosting numerous PHP web applications ranging from Joomla, Drupal, and some legacy (read: PHP4) and other custom-built code inherited from clients. This will be a development machine ...
- 113
1
vote
3
answers
6k
views
What could cause apache2 to not run index.php files through PHP FastCGI handler?
I'm trying to run PHP using FastCGI (mod-fcgid) under apache 2 with the worker MPM. I've used this blog post as a reference.
It seems I've got everything working except one thing:
When apache serves ...
- 163
1
vote
2
answers
5k
views
Apache2 full CPU Usage after exiting with error ('unable to create worker thread')
I've got my Apache2.4 (mpm_worker) instance exiting with following log:
[Mon May 27 11:27:33.196177 2019] [core:warn] [pid 567365:tid 139765793668032] AH00045: child process 567368 still did not exit,...
- 61
1
vote
2
answers
2k
views
switching to worker mpm for apache 2 on RHEL 4
I am thinking of switching from the non threaded prefork mpm to the hybrid multi-process
multi-threaded worker mpm for apache (2.0.52).
It runs on a Intel(R) Xeon(TM) Quad core machine running ...
- 429
1
vote
1
answer
3k
views
Invalid argument: AH03139: ap_queue_pop failed
Short version, I upgraded from Fedora Server 23 to Fedora Server 24, and now my apache (httpd-2.4.23-4.fc24.x86_64) error_log is filling up with these messages:
[Mon Nov 28 20:30:39.486187 2016] [...
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1
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2
answers
2k
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Apache mpm-worker + mod_fcgid + php5_cgi partially and sporadically down
Recently, I have changed from Apache mpm-prefork (PHP module) to mpm-worker (PHP-FPM) due to memory issues. I am running a quite-large PHP application that requires ~20-30M per prefork process.
...
- 910
1
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3
answers
2k
views
Does single Apache worker serves only 1 request or more than that?
I am facing a problem in Apache server when the number of users reaches around 250 concurrent. The problem occurred only when the idle worker number was set to 0.
So my question is, does a single ...
- 11
1
vote
1
answer
1k
views
Thread Safe php-pecl-memcache and php-pecl-mongo
I'm looking to switch a Fedora server running Apache from prefork to worker.
Everything seems to be fine except the php libraries for Mongo and Memcache. Has anyone had any success getting these to ...
- 167
1
vote
2
answers
1k
views
Apache mpm_worker + php : processes not terminating
I'm seeing a weird issue on our web servers where the Apache processes seem to be remaining in limbo with 1 or 2 threads. This is disconcerting for me since I was just thinking I wanted to impose a ...
- 1,768
1
vote
1
answer
242
views
Stopping apache worker of a vhost
Apache runs in worker mod. Multiple vhosts are configured. On of the vhosts runs in a loop, spawning childs. I want to kill this one while keeping the other good vhosts running. An apache2ctl restart ...
- 231
1
vote
1
answer
4k
views
apache mpm-worker (Module mpm_worker does not exist!)
I am newbie and I have Ubuntu 12.04 box where I installed Apache using command
apt-get install apache2
It installed everything fine. Then I needed mpm-worker so I installed mpm-worker using command
...
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1
vote
2
answers
3k
views
What happens when mpm_prefork_module and mpm_worker_module are both used?
I came across this Apache configuration:
<IfModule mpm_prefork_module>
StartServers 16
MinSpareServers 16
MaxSpareServers 32
ServerLimit 400
...
- 337
1
vote
2
answers
13k
views
Connection reset by peer: mod_fcgid: error reading data from FastCGI server Issues
Help is greatly needed for our server. We are experiencing random "Connection reset by peer: mod_fcgid: error reading data from FastCGI server" errors which cause a 500 internal server error. If the ...
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1
vote
1
answer
549
views
which caching system to work with mpm_worker and mod_fcgid?
I was planning to use APC for my Apache Server based on mpm_worker and mod_fcgid but I found out that APC and also xCache doesn't work with mod_fcgid. so what do you suggest?
- 1,484
1
vote
1
answer
2k
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Enable PHP-ZTS and MPM Workers in Apache to lower memory footprint, but still keep MySQL?
My question is quite similar to this one in that I'm trying to reduce the memory footprint of my website on a somewhat meager shared hosting solution. I'm going to be playing around with my own ...
- 113
1
vote
2
answers
1k
views
how can be switch from prefork to worker MPM in running apache on solaris10
bash-3.00# /usr/apache2/bin/httpd -l
Compiled in modules:
core.c
prefork.c
http_core.c
mod_so.c
bash-3.00#
bash-3.00# /usr/apache2/bin/httpd -v
Server version: Apache/2.0.63
Server built: ...
- 21
1
vote
2
answers
1k
views
Does mod_dav_svn support the Apache mpm-worker module?
Does the subversion mod_dav_svn support Apache's MPM-Worker thread configuration?
I'm finding very little documentation so far on this, and I'm looking for better ways to make use of my subversion ...
- 742
1
vote
1
answer
4k
views
Apache2 worker mpm too many processes
I've got Apache installed with the worker mpm which seems to have too many processes active in spite of the configurations in place. I'll detail the configs below :
StartServers 2
MinSpareThreads 10
...
- 1,768
1
vote
2
answers
2k
views
How do I configure apache2/mpm-worker + fcgid?
Is there any good tutos there?
Currently I'm using apache2/mod_php which is not efficient.
- 3,297
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2
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3k
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What values to set for Apache 2 worker server pool management?
I recently switched from Apache 2.2 prefork to Apache 2.2 worker, but I have no idea what would be a great MPM config to start with. On prefork, I used :
MaxClients 256
StartServers 190
...
- 510
1
vote
0
answers
2k
views
How to increase amount of concurrent connections in apache2?
I am running into traffic issues as apache 2.4.18 maxes out on concurrent connections:
ps auxf | grep apache2 | wc -l
258
As soon as 258 is reached the server is waiting to serve new connections ...
- 2,112
1
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0
answers
966
views
Which mpm setting to use to limit the number of connections on Centos 7 apache
I am googling around and finding myself going down a rabbit hole and getting nowhere.
My over all goal is to limit the number of connections that can be made at the same time to Apache on a Centos 7 ...
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1
vote
1
answer
2k
views
How to tune apache with mpm_event
regarding apache tuning, there are lots of good documents and posts on the web
eg. How To Tune Apache on Ubuntu 14.04 Server
unfortunately almost all of them describe how to tune apache with ...
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1
vote
0
answers
630
views
Is Apache Prefork working fast then Worker MPM to serve static content?
I have found so many stuff related to Apache worker MPM is working fast than Prefork MPM, i know nginx is another option but i want to stick on apache as for use of htaccess and some other features, ...
- 11
1
vote
1
answer
687
views
Apache configured as mpm_worker - why it still shows as mpm_prefork?
I believe that I properly configured Apache MPM as worker under Ubuntu 13.10, including PHP-FPM and FCGI, and disabled mod_php. When I run top I can clearly see multiple Apache (~2-3 MB) and php (~ 25-...
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vote
1
answer
567
views
Reducing memory for worker MPM in Apache
I've moved from the prefork MPM to the worker MPM due to a process limit I was hitting on my VPS.
However, memory usage increased after switching over (which is odd since the worker MPM is supposed ...
- 11
1
vote
1
answer
785
views
Configuring Apache2/mpm-worker not to eat up all the server's RAM
Th server is running around 40 WordPress sites. Originally I'd set the server up using mod_php and mpm-prefork back when the server had 2GB of memory, and it was running comfortably well. Recently, ...
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0
votes
1
answer
8k
views
apache in centos 7 doesn't start with mpm event
Hi I've tried to switch from prefork to apache MPM event as followed:
vim /etc/httpd/conf.modules.d/00-mpm.conf
# Select the MPM module which should be used by uncommenting exactly
# one of the ...
- 3
0
votes
2
answers
2k
views
use prefork or worker in apache configuration?
A have apache server version (Apache/2.2.13) and I want to use MPM module
But I do not know what use prefork or worker and what configurations I need ?
specification:
Ram:4G
CPU:Intel(R) Xeon(R) ...
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0
votes
1
answer
2k
views
List of PHP modules that are thread safe
I'd like to try running Apache in a threaded MPM with mod_php. Does anyone have a list of PHP modules that are thread safe so I can tell if its going to be safe to do or not?
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