dica: velocidade do apache

dicas dos sites:

https://stackoverflow.com/questions/24283025/slow-apache-on-ubuntu

http://oxpedia.org/wiki/index.php?title=Tune_apache2_for_more_concurrent_connections

adicionar no /etc/apache2/apache2.conf

This is an example configuration to provide 8000 concurrent connections.

<IfModule mpm_worker_module>
    ServerLimit              250
    StartServers              10
    MinSpareThreads           75
    MaxSpareThreads          250 
    ThreadLimit               64
    ThreadsPerChild           32
    MaxRequestWorkers       8000
    MaxConnectionsPerChild 10000
</IfModule>

Note: MaxRequestWorkers was previously named MaxClients and MaxConnectionsPerChild was previously named MaxRequestsPerChild. If you are using old (pre 2.4) verions of apache you might need to use the old names.

Short explanation of the parameters:

ServerLimit Declares the maximum number of running apache processes. If you change this value you have to restart the daemon.
StartServers The number of processes to start initially when starting the apache daemon.
MinSpareThreads/MaxSpareThreads This regulates how many threads may stay idle without being killed. Apache regulates this on its own very well with default values.
ThreadsPerChild How many threads can be created per process. Can be changed during a reload.
ThreadLimit ThreadsPerChild can be configured as high as this value during runtime. If you change this value you have to restart the daemon.
MaxRequestWorkers This declares how many concurrent connections we provide. Devided by ThreadsPerChildyou get the suitable ServerLimit value. May be less than ServerLimit * ThreadsPerChildto reserve some resources that can be engaged during runtime with increasing MaxRequestWorkers and reloading the configuration.
MaxConnectionsPerChild Defines the number of Connections that a process can handle during its lifetime (keep-alives are counted once). After that it will be killed. This can be used to prevent possible apache memory leaks. If set to 0 the lifetime is infinite.

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