Are this option

[Marc Serra <mserra@xxxxxxxxx>]

Hi, I want to configure an apache server to support a high load site. Are these settings correct? 

/etc/apache2/mods-enabled/mpm_event.conf

<IfModule mpm_event_module>
        StartServers                     2
        MinSpareThreads          75
        MaxSpareThreads          250
        ThreadLimit                      64
        ThreadsPerChild          25
        MaxRequestWorkers         1500
        MaxConnectionsPerChild   0

        ServerLimit 75
</IfModule>

I used a combination of https://httpd.apache.org/docs/2.4/en/mod/mpm_common.html and https://support.plesk.com/hc/en-us/articles/214529205-Apache-keeps-going-down-on-a-Plesk-server-server-reached-MaxRequestWorkers-setting ...

MaxRequestWorkers = (Total RAM - Memory used for Linux, DB, etc.) / average Apache process size

=>

1500 = (64000 - 60000) / 40

The default ServerLimit value is 16. To increase it, you must also raise MaxRequestWorkers using the following formula: ServerLimit value x 25 = MaxRequestWorkers value. For example, if ServerLimit is set to 20, then MaxRequestWorkers will be 20 x 25 = 500.

=>

75 x 25 = 1500

The hardware includes 64GB of memory, AMD Ryzen 7 PRO 3700 8-Core Processor and NVME disks.

I'm using Apache 2.4.41 with event MPM on ubuntu 20.04 ...

Server version: Apache/2.4.41 (Ubuntu)
Server built:   2022-01-05T14:49:56
Server's Module Magic Number: 20120211:88
Server loaded:  APR 1.6.5, APR-UTIL 1.6.1
Compiled using: APR 1.6.5, APR-UTIL 1.6.1
Architecture:   64-bit
Server MPM:     event
  threaded:     yes (fixed thread count)
    forked:     yes (variable process count)
Server compiled with....
 -D APR_HAS_SENDFILE
 -D APR_HAS_MMAP
 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
 -D APR_USE_SYSVSEM_SERIALIZE
 -D APR_USE_PTHREAD_SERIALIZE
 -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
 -D APR_HAS_OTHER_CHILD
 -D AP_HAVE_RELIABLE_PIPED_LOGS
 -D DYNAMIC_MODULE_LIMIT=256
 -D HTTPD_ROOT="/etc/apache2"
 -D SUEXEC_BIN="/usr/lib/apache2/suexec"
 -D DEFAULT_PIDLOG="/var/run/apache2.pid"
 -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D AP_TYPES_CONFIG_FILE="mime.types"
 -D SERVER_CONFIG_FILE="apache2.conf"

And this loaded Modules...

 core_module (static)
 so_module (static)
 watchdog_module (static)
 http_module (static)
 log_config_module (static)
 logio_module (static)
 version_module (static)
 unixd_module (static)
 access_compat_module (shared)
 aclr_module (shared)
 actions_module (shared)
 alias_module (shared)
 auth_basic_module (shared)
 authn_core_module (shared)
 authn_file_module (shared)
 authz_core_module (shared)
 authz_host_module (shared)
 authz_user_module (shared)
 autoindex_module (shared)
 cgid_module (shared)
 deflate_module (shared)
 dir_module (shared)
 env_module (shared)
 fcgid_module (shared)
 filter_module (shared)
 headers_module (shared)
 include_module (shared)
 mime_module (shared)
 mpm_event_module (shared)
 negotiation_module (shared)
 proxy_module (shared)
 proxy_fcgi_module (shared)
 proxy_http_module (shared)
 proxy_wstunnel_module (shared)
 remoteip_module (shared)
 reqtimeout_module (shared)
 rewrite_module (shared)
 setenvif_module (shared)
 socache_shmcb_module (shared)
 ssl_module (shared)
 status_module (shared)
 suexec_module (shared)
 unique_id_module (shared)
 userdir_module (shared)

Thank's for your time.

Manxa 1876, S.L. Ctra. Les Tries, 85.17800 Olot (Girona) Tel. 972 27 45 30 www.manxa.com

Manxa Industrial Manxa Ferros Manxa Ferreteria i Parament de la Llar

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