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@ -456,158 +456,3 @@ ynh_check_ram () { |
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echo $ram |
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fi |
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} |
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#================================================= |
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# Define the values to configure php-fpm |
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# |
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# usage: ynh_get_scalable_phpfpm --usage=usage --footprint=footprint [--print] |
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# | arg: -f, --footprint - Memory footprint of the service (low/medium/high). |
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# low - Less than 20Mb of ram by pool. |
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# medium - Between 20Mb and 40Mb of ram by pool. |
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# high - More than 40Mb of ram by pool. |
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# Or specify exactly the footprint, the load of the service as Mb by pool instead of having a standard value. |
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# To have this value, use the following command and stress the service. |
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# watch -n0.5 ps -o user,cmd,%cpu,rss -u APP |
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# |
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# | arg: -u, --usage - Expected usage of the service (low/medium/high). |
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# low - Personal usage, behind the sso. |
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# medium - Low usage, few people or/and publicly accessible. |
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# high - High usage, frequently visited website. |
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# |
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# | arg: -p, --print - Print the result |
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# |
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# |
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# |
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# The footprint of the service will be used to defined the maximum footprint we can allow, which is half the maximum RAM. |
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# So it will be used to defined 'pm.max_children' |
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# A lower value for the footprint will allow more children for 'pm.max_children'. And so for |
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# 'pm.start_servers', 'pm.min_spare_servers' and 'pm.max_spare_servers' which are defined from the |
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# value of 'pm.max_children' |
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# NOTE: 'pm.max_children' can't exceed 4 times the number of processor's cores. |
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# |
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# The usage value will defined the way php will handle the children for the pool. |
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# A value set as 'low' will set the process manager to 'ondemand'. Children will start only if the |
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# service is used, otherwise no child will stay alive. This config gives the lower footprint when the |
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# service is idle. But will use more proc since it has to start a child as soon it's used. |
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# Set as 'medium', the process manager will be at dynamic. If the service is idle, a number of children |
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# equal to pm.min_spare_servers will stay alive. So the service can be quick to answer to any request. |
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# The number of children can grow if needed. The footprint can stay low if the service is idle, but |
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# not null. The impact on the proc is a little bit less than 'ondemand' as there's always a few |
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# children already available. |
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# Set as 'high', the process manager will be set at 'static'. There will be always as many children as |
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# 'pm.max_children', the footprint is important (but will be set as maximum a quarter of the maximum |
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# RAM) but the impact on the proc is lower. The service will be quick to answer as there's always many |
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# children ready to answer. |
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ynh_get_scalable_phpfpm () { |
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local legacy_args=ufp |
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# Declare an array to define the options of this helper. |
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declare -Ar args_array=( [u]=usage= [f]=footprint= [p]=print ) |
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local usage |
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local footprint |
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local print |
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# Manage arguments with getopts |
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ynh_handle_getopts_args "$@" |
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# Set all characters as lowercase |
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footprint=${footprint,,} |
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usage=${usage,,} |
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print=${print:-0} |
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if [ "$footprint" = "low" ] |
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then |
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footprint=20 |
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elif [ "$footprint" = "medium" ] |
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then |
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footprint=35 |
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elif [ "$footprint" = "high" ] |
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then |
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footprint=50 |
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fi |
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# Define the way the process manager handle child processes. |
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if [ "$usage" = "low" ] |
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then |
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php_pm=ondemand |
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elif [ "$usage" = "medium" ] |
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then |
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php_pm=dynamic |
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elif [ "$usage" = "high" ] |
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then |
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php_pm=static |
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else |
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ynh_die --message="Does not recognize '$usage' as an usage value." |
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fi |
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# Get the total of RAM available, except swap. |
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local max_ram=$(ynh_check_ram --no_swap) |
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less0() { |
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# Do not allow value below 1 |
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if [ $1 -le 0 ] |
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then |
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echo 1 |
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else |
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echo $1 |
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fi |
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} |
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# Define pm.max_children |
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# The value of pm.max_children is the total amount of ram divide by 2 and divide again by the footprint of a pool for this app. |
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# So if php-fpm start the maximum of children, it won't exceed half of the ram. |
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php_max_children=$(( $max_ram / 2 / $footprint )) |
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# If process manager is set as static, use half less children. |
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# Used as static, there's always as many children as the value of pm.max_children |
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if [ "$php_pm" = "static" ] |
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then |
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php_max_children=$(( $php_max_children / 2 )) |
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fi |
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php_max_children=$(less0 $php_max_children) |
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# To not overload the proc, limit the number of children to 4 times the number of cores. |
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local core_number=$(nproc) |
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local max_proc=$(( $core_number * 4 )) |
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if [ $php_max_children -gt $max_proc ] |
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then |
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php_max_children=$max_proc |
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fi |
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if [ "$php_pm" = "dynamic" ] |
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then |
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# Define pm.start_servers, pm.min_spare_servers and pm.max_spare_servers for a dynamic process manager |
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php_min_spare_servers=$(( $php_max_children / 8 )) |
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php_min_spare_servers=$(less0 $php_min_spare_servers) |
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php_max_spare_servers=$(( $php_max_children / 2 )) |
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php_max_spare_servers=$(less0 $php_max_spare_servers) |
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php_start_servers=$(( $php_min_spare_servers + ( $php_max_spare_servers - $php_min_spare_servers ) /2 )) |
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php_start_servers=$(less0 $php_start_servers) |
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else |
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php_min_spare_servers=0 |
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php_max_spare_servers=0 |
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php_start_servers=0 |
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fi |
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if [ $print -eq 1 ] |
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then |
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ynh_debug --message="Footprint=${footprint}Mb by pool." |
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ynh_debug --message="Process manager=$php_pm" |
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ynh_debug --message="Max RAM=${max_ram}Mb" |
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if [ "$php_pm" != "static" ]; then |
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ynh_debug --message="\nMax estimated footprint=$(( $php_max_children * $footprint ))" |
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ynh_debug --message="Min estimated footprint=$(( $php_min_spare_servers * $footprint ))" |
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fi |
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if [ "$php_pm" = "dynamic" ]; then |
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ynh_debug --message="Estimated average footprint=$(( $php_max_spare_servers * $footprint ))" |
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elif [ "$php_pm" = "static" ]; then |
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ynh_debug --message="Estimated footprint=$(( $php_max_children * $footprint ))" |
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fi |
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ynh_debug --message="\nRaw php-fpm values:" |
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ynh_debug --message="pm.max_children = $php_max_children" |
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if [ "$php_pm" = "dynamic" ]; then |
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ynh_debug --message="pm.start_servers = $php_start_servers" |
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ynh_debug --message="pm.min_spare_servers = $php_min_spare_servers" |
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ynh_debug --message="pm.max_spare_servers = $php_max_spare_servers" |
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fi |
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fi |
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} |
Kay0u
6 years ago