Those settings could fit your workload, or not. You need to measure it with /server-status to see how many idle workers you have.
That being said, ThreadsPerChild seems very low. Depending on your content, you could likely ramp up to a much higher value, which means that you would need less parent processes. On Wed, 16 Mar 2022 at 08:14, Marc Serra <mse...@manxa.com> wrote: > I'm sorry to insist ... if this list is not the right place to ask that > question, could anyone tell me where to do it? > > Thank's > > Missatge de Marc Serra <mse...@manxa.net> del dia dc., 9 de març 2022 a > les 18:01: > >> 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. >> >> > > -- > Marc Serra > Organització i Sistemes > > > <https://www.manxa.com> Manxa 1876, S.L. > Ctra. 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