MAXBG parameter - Revision history

RPuszewski at 20:14, 8 April 2026

2026-04-08T20:14:11Z

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	<dd>System		<dd>System
	<dt>Where set		<dt>Where set
	<dd>User 0 CCAIN parameters		<dd>User 0 CCAIN parameters or reset by system manager
	<dt>Related products		<dt>Related products
	<dd>All		<dd>All
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	Setting <var>MAXBG</var> to 0 indicates that the default value of <var>MAXBG</var>, calculated from the number		Setting <var>MAXBG</var> to 0 indicates that the default value of <var>MAXBG</var>, calculated from the number
	of daemon threads, is to be used.		of daemon threads, is to be used.
	~~This means that~~ the ~~lowest explicit~~ value ~~of <var>MAXBG</var> that will~~ be ~~honored is 1~~.		Effective with Model204 version 8, the value may be reset to zero by a system manager if no daemon threads are to be allowed.

	[[Category:System parameters]]		[[Category:System parameters]]
	[[Category:Parameters]]		[[Category:Parameters]]

JAL at 22:08, 25 August 2014

2014-08-25T22:08:52Z

← Older revision		Revision as of 22:08, 25 August 2014
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	<dd><var class="product">[[Sirius Mods]]</var> 7.0		<dd><var class="product">[[Sirius Mods]]</var> 7.0
	</dl>		</dl>

	==Description==		==Description==
	This parameter specifies the maximum number of background or independent daemon		This parameter specifies the maximum number of background or independent daemon
	requests that may be running at once.		requests that may be running at once.
	Before <var class="product">Sirius Mods</var> 7.0, the only way to create a background daemon request was with		Before <var class="product">Sirius Mods</var> 7.0, the only way to create a background daemon request was with
	the $~~commbg~~ function.		the <var>[[$CommBg]]</var> function.
	Under <var class="product">Sirius Mods</var> 7.0 and later, independent daemon requests can also be created		Under <var class="product">Sirius Mods</var> 7.0 and later, independent daemon requests can also be created
	using the Daemon class [[RunIndependently ~~method~~]].		using the <var>Daemon</var> class <var>[[RunIndependently (Daemon subroutine)\|RunIndependently]]</var> method.
	Daemons running either as a result of RunIndependently or $~~commbg~~ are both counted		Daemons running either as a result of <var>RunIndependently</var> or <var>$CommBg</var> are both counted
	the same way against the MAXBG limit.		the same way against the <var>MAXBG</var> limit.

	If a $~~commbg~~ request would exceed the MAXBG limit (or there are no daemon threads		If a <var>$CommBg</var> request would exceed the <var>MAXBG</var> limit (or there are no daemon threads
	immediately available to run the request) the request is enqueued and run later		immediately available to run the request) the request is enqueued and run later
	when daemon threads are available and the number of running background/independent		when daemon threads are available and the number of running background/independent
	requests drops below MAXBG.		requests drops below <var>MAXBG</var>.
	If a RunIndependently request would exceed the MAXBG limit, the request is cancelled.		If a <var>RunIndependently</var> request would exceed the <var>MAXBG</var> limit, the request is cancelled.

	The default value of MAXBG is the number of daemon (SDAEMDEV) threads divided by		The default value of <var>MAXBG</var> is the number of daemon (<var>[[SDAEMDEV parameter\|SDAEMDEV]]</var>) threads divided by
	two or the number of threads minus 10, whichever is greater.		two or the number of threads minus 10, whichever is greater.
	For example, if there are 10 daemon threads defined in the Online, MAXBG defaults		For example, if there are 10 daemon threads defined in the Online, <var>MAXBG</var> defaults
	to 5.		to 5.
	If there are 40 daemon threads, MAXBG defaults to 30.		If there are 40 daemon threads, <var>MAXBG</var> defaults to 30.
	While there was no explicit MAXBG parameter before <var class="product">Sirius Mods</var> 7.0, the default MAXBG		While there was no explicit <var>MAXBG</var> parameter before <var class="product">Sirius Mods</var> 7.0, the default <var>MAXBG</var> was used "under the covers" by <var>$CommBg</var>, anyway.
	was used ~~“~~under the covers~~”~~ by $~~commbg~~, anyway.

	Setting MAXBG to a value greater than or equal to the number of daemon threads allows		Setting <var>MAXBG</var> to a value greater than or equal to the number of daemon threads allows
	background/independent requests to use up every available daemon thread,		background/independent requests to use up every available daemon thread,
	if they want.		if they want.
	Setting MAXBG to 0 indicates that the default value of MAXBG, calculated from the number		Setting <var>MAXBG</var> to 0 indicates that the default value of <var>MAXBG</var>, calculated from the number
	of daemon threads, is to be used.		of daemon threads, is to be used.
	This means that the lowest explicit value of MAXBG that will be honored is 1.		This means that the lowest explicit value of <var>MAXBG</var> that will be honored is 1.

	[[Category:System parameters]]		[[Category:System parameters]]
	[[Category:Parameters]]		[[Category:Parameters]]

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2013-08-27T16:40:03Z

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			{{Template:MAXBG parameter subtitle}}
	==Summary==		==Summary==
	<dl>		<dl>

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2013-04-19T20:06:47Z

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	<dd>All		<dd>All
	<dt>Introduced		<dt>Introduced
	<dd><var class="product">Sirius Mods</var> 7.0		<dd><var class="product">[[Sirius Mods]]</var> 7.0
	</dl>		</dl>
	==Description==		==Description==

JALWiccan: 1 revision

2012-10-30T00:45:57Z

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← Older revision	Revision as of 00:45, 30 October 2012
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	This parameter specifies the maximum number of background or independent daemon		This parameter specifies the maximum number of background or independent daemon
	requests that may be running at once.		requests that may be running at once.
	Before ''Sirius Mods'' 7.0, the only way to create a background daemon request was with		Before <var class="product">Sirius Mods</var> 7.0, the only way to create a background daemon request was with
	the $commbg function.		the $commbg function.
	Under ''Sirius Mods'' 7.0 and later, independent daemon requests can also be created		Under <var class="product">Sirius Mods</var> 7.0 and later, independent daemon requests can also be created
	using the Daemon class [[RunIndependently method]].		using the Daemon class [[RunIndependently method]].
	Daemons running either as a result of RunIndependently or $commbg are both counted		Daemons running either as a result of RunIndependently or $commbg are both counted
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	to 5.		to 5.
	If there are 40 daemon threads, MAXBG defaults to 30.		If there are 40 daemon threads, MAXBG defaults to 30.
	While there was no explicit MAXBG parameter before ''Sirius Mods'' 7.0, the default MAXBG		While there was no explicit MAXBG parameter before <var class="product">Sirius Mods</var> 7.0, the default MAXBG
	was used “under the covers” by $commbg, anyway.		was used “under the covers” by $commbg, anyway.

DmeWiccan: 1 revision

2012-06-22T19:25:01Z

1 revision

New page

==Summary==
<dl>
<dt>Default value
<dd>Number of daemon (SDAEMDEV) threads divided by two, or number of daemon
threads minus 10, whichever is greater
<dt>Parameter type
<dd>System
<dt>Where set
<dd>User 0 CCAIN parameters
<dt>Related products
<dd>All
<dt>Introduced
<dd><var class="product">Sirius Mods</var> 7.0
</dl>
==Description==
This parameter specifies the maximum number of background or independent daemon
requests that may be running at once.
Before ''Sirius Mods'' 7.0, the only way to create a background daemon request was with
the $commbg function.
Under ''Sirius Mods'' 7.0 and later, independent daemon requests can also be created
using the Daemon class [[RunIndependently method]].
Daemons running either as a result of RunIndependently or $commbg are both counted
the same way against the MAXBG limit.

If a $commbg request would exceed the MAXBG limit (or there are no daemon threads
immediately available to run the request) the request is enqueued and run later
when daemon threads are available and the number of running background/independent
requests drops below MAXBG.
If a RunIndependently request would exceed the MAXBG limit, the request is cancelled.

The default value of MAXBG is the number of daemon (SDAEMDEV) threads divided by
two or the number of threads minus 10, whichever is greater.
For example, if there are 10 daemon threads defined in the Online, MAXBG defaults
to 5.
If there are 40 daemon threads, MAXBG defaults to 30.
While there was no explicit MAXBG parameter before ''Sirius Mods'' 7.0, the default MAXBG
was used “under the covers” by $commbg, anyway.

Setting MAXBG to a value greater than or equal to the number of daemon threads allows
background/independent requests to use up every available daemon thread,
if they want.
Setting MAXBG to 0 indicates that the default value of MAXBG, calculated from the number
of daemon threads, is to be used.
This means that the lowest explicit value of MAXBG that will be honored is 1.
[[Category:System parameters]]
[[Category:Parameters]]

JAL at 21:08, 30 September 2010

2010-09-30T21:08:08Z

New page

<dl>
<dt>Default value
<dd>Number of daemon (SDAEMDEV) threads divided by two, or number of daemon
threads minus 10, whichever is greater
<dt>Parameter type
<dd>System
<dt>Where set
<dd>User 0 CCAIN parameters
<dt>Related products
<dd>All
<dt>Introduced
<dd>[[Sirius Mods]] 7.0
</dl>

This parameter specifies the maximum number of background or independent daemon
requests that may be running at once.
Before ''Sirius Mods'' 7.0, the only way to create a background daemon request was with
the $commbg function.
Under ''Sirius Mods'' 7.0 and later, independent daemon requests can also be created
using the Daemon class [[RunIndependently method]].
Daemons running either as a result of RunIndependently or $commbg are both counted
the same way against the MAXBG limit.

If a $commbg request would exceed the MAXBG limit (or there are no daemon threads
immediately available to run the request) the request is enqueued and run later
when daemon threads are available and the number of running background/independent
requests drops below MAXBG.
If a RunIndependently request would exceed the MAXBG limit, the request is cancelled.

The default value of MAXBG is the number of daemon (SDAEMDEV) threads divided by
two or the number of threads minus 10, whichever is greater.
For example, if there are 10 daemon threads defined in the Online, MAXBG defaults
to 5.
If there are 40 daemon threads, MAXBG defaults to 30.
While there was no explicit MAXBG parameter before ''Sirius Mods'' 7.0, the default MAXBG
was used “under the covers” by $commbg, anyway.

Setting MAXBG to a value greater than or equal to the number of daemon threads allows
background/independent requests to use up every available daemon thread,
if they want.
Setting MAXBG to 0 indicates that the default value of MAXBG, calculated from the number
of daemon threads, is to be used.
This means that the lowest explicit value of MAXBG that will be honored is 1.
[[Category:System Parameters]]
[[Category:Parameters]]