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<span id="_top">[[Qpsmtpd#Plugins]]</span>
= [[#___top|NAME]] =
loadcheck
= [[#___top|DESCRIPTION]] =
Only takes email transactions if the system load is at or below a specified level.
If this is running on a system that provides /kern/loadavg or /proc/loadavg it will be used instead of the 'uptime' command.
Once a load value is determined, it is cached for a period of time. See the cache_time below.
Since fork/exec is expensive in perl, if using the 'uptime' method, use cache_time to avoid increasing your load on every connection.
= [[#___top|CONFIG]] =
max_load
<pre> This is the 1 minute system load where we won't take transactions
if our load is higher than this value. (Default: 7)</pre>
cache_time
<pre> A recently determined load value will be cached and used for the
assigned number of seconds. (Default: 10)</pre>
uptime
<pre> The path to the command 'uptime' if different than the default.
(Default: /usr/bin/uptime)</pre>
Example:
loadcheck cache_time 30
loadcheck max_load 7 uptime /usr/bin/uptime
= [[#___top|SEE ALSO]] =
Original version: http://www.nntp.perl.org/group/perl.qpsmtpd/2006/01/msg4422.html
Variant with caching: http://www.nntp.perl.org/group/perl.qpsmtpd/2006/03/msg4710.html
Steve Kemp's announcement of an alternate load limiter: http://www.nntp.perl.org/group/perl.qpsmtpd/2008/03/msg7814.html
= [[#___top|AUTHOR]] =
Written by Peter Eisch <peter@boku.net>.
= [[#___top|CHANGES]] =
v0.03 - msimerson - 2014-03-21
<pre> * refactored "find the way to get load avg" out of loadcheck (every
connection) into get_load_method which is run in register. If we can't
get the load average, don't register the hook.
* added BSD::getloadavg method (tested on FreeBSD)</pre>
v0.02 - github@rsiddall - resurrected from list archives
<!-- Generated Sat Apr 13 15:24:18 EDT 2019 using
perldoc -T -ohtml $plugins/$1 \|pandoc -f html -t mediawiki \|sed '1 i\\n\n\n<span id="_top">[[Qpsmtpd#Plugins]]</span>' \|sed -e 's#</d.>##'
-->
----
[[Category:Qpsmtpd|loadcheck]]
= [[#___top|NAME]] =
loadcheck
= [[#___top|DESCRIPTION]] =
Only takes email transactions if the system load is at or below a specified level.
If this is running on a system that provides /kern/loadavg or /proc/loadavg it will be used instead of the 'uptime' command.
Once a load value is determined, it is cached for a period of time. See the cache_time below.
Since fork/exec is expensive in perl, if using the 'uptime' method, use cache_time to avoid increasing your load on every connection.
= [[#___top|CONFIG]] =
max_load
<pre> This is the 1 minute system load where we won't take transactions
if our load is higher than this value. (Default: 7)</pre>
cache_time
<pre> A recently determined load value will be cached and used for the
assigned number of seconds. (Default: 10)</pre>
uptime
<pre> The path to the command 'uptime' if different than the default.
(Default: /usr/bin/uptime)</pre>
Example:
loadcheck cache_time 30
loadcheck max_load 7 uptime /usr/bin/uptime
= [[#___top|SEE ALSO]] =
Original version: http://www.nntp.perl.org/group/perl.qpsmtpd/2006/01/msg4422.html
Variant with caching: http://www.nntp.perl.org/group/perl.qpsmtpd/2006/03/msg4710.html
Steve Kemp's announcement of an alternate load limiter: http://www.nntp.perl.org/group/perl.qpsmtpd/2008/03/msg7814.html
= [[#___top|AUTHOR]] =
Written by Peter Eisch <peter@boku.net>.
= [[#___top|CHANGES]] =
v0.03 - msimerson - 2014-03-21
<pre> * refactored "find the way to get load avg" out of loadcheck (every
connection) into get_load_method which is run in register. If we can't
get the load average, don't register the hook.
* added BSD::getloadavg method (tested on FreeBSD)</pre>
v0.02 - github@rsiddall - resurrected from list archives
<!-- Generated Sat Apr 13 15:24:18 EDT 2019 using
perldoc -T -ohtml $plugins/$1 \|pandoc -f html -t mediawiki \|sed '1 i\\n\n\n<span id="_top">[[Qpsmtpd#Plugins]]</span>' \|sed -e 's#</d.>##'
-->
----
[[Category:Qpsmtpd|loadcheck]]
