Swappolube - Revision history

sixwheeledbeast: Reverted edits by 62.152.39.215 (Talk) to last revision by 85.23.163.231

sixwheeledbeast — Wed, 14 Aug 2013 16:31:05 GMT

Reverted edits by 62.152.39.215 (Talk) to last revision by 85.23.163.231

← Older revision		Revision as of 16:31, 14 August 2013
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	* [http://maemo.org/packages/view/swappolube-nogui/ swappolube-nogui package status]		* [http://maemo.org/packages/view/swappolube-nogui/ swappolube-nogui package status]
	* [https://garage.maemo.org/projects/swappolube/ Garage project page].		* [https://garage.maemo.org/projects/swappolube/ Garage project page].
-	* [http://www.easyprojects.net/ project management tools].

	==License==		==License==

62.152.39.215: /* Swappolube-nogui */

62.152.39.215 — Wed, 14 Aug 2013 13:03:01 GMT

Swappolube-nogui

← Older revision		Revision as of 13:03, 14 August 2013
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	* [http://maemo.org/packages/view/swappolube-nogui/ swappolube-nogui package status]		* [http://maemo.org/packages/view/swappolube-nogui/ swappolube-nogui package status]
	* [https://garage.maemo.org/projects/swappolube/ Garage project page].		* [https://garage.maemo.org/projects/swappolube/ Garage project page].
		+	* [http://www.easyprojects.net/ project management tools].

	==License==		==License==

85.23.163.231: /* Laptop Mode */

85.23.163.231 — Tue, 06 Dec 2011 16:39:01 GMT

Laptop Mode

← Older revision		Revision as of 16:39, 6 December 2011
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	===Laptop Mode===		===Laptop Mode===

-	* Description: ~~laptop_mode is a knob that controls "laptop mode".~~ When the ~~knob~~ is set, any physical disk I/O (that might have caused the hard disk to spin up, see <code>/proc/sys/vm/block_dump</code>) causes Linux to flush all dirty blocks. The result of this is that after a disk has spun down, it will not be spun up anymore to write dirty blocks, because those blocks had already been written immediately after the most recent read operation. The value of the laptop_mode knob determines the time between the occurrence of disk I/O and when the flush is triggered. A sensible value for the knob is 5 seconds. Setting the knob to 0 disables laptop mode. Since this mode has been designed with mechanical hard drives in mind to maximize the time between spin-ups that the flash memory in a cellphone does not need to worry itself with, it might actually be better to set this to zero.	+	* Description: When the value for laptop_mode is set to be something other than zero, any physical disk I/O (that might have caused the hard disk to spin up, see <code>/proc/sys/vm/block_dump</code>) causes Linux to flush all dirty blocks after the value in seconds. The result of this is that after a disk has spun down, it will not be spun up anymore to write dirty blocks, because those blocks had already been written immediately after the most recent read operation. The value of the laptop_mode knob determines the time between the occurrence of disk I/O and when the flush is triggered. A sensible value for the knob is 5 seconds. Setting the knob to 0 disables laptop mode. Since this mode has been designed with mechanical hard drives in mind to maximize the time between spin-ups that the flash memory in a cellphone does not need to worry itself with, it might actually be better to set this to zero.
	* Default: "0"		* Default: "0"
	* Suggested: "1"		* Suggested: "1"

85.23.163.231: /* tcp_timestamps */

85.23.163.231 — Tue, 06 Dec 2011 12:46:48 GMT

tcp_timestamps

← Older revision		Revision as of 12:46, 6 December 2011
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	===tcp_timestamps===		===tcp_timestamps===

-	* Description: Enable timestamps as defined in RFC1323. [http://www.linuxinsight.com/proc_sys_net_ipv4_tcp_timestamps.html]	+	* Description: Enable timestamps as defined in RFC1323. [http://www.linuxinsight.com/proc_sys_net_ipv4_tcp_timestamps.html] Turning off TCP timestamps can be counterproductive, since timestamps are used to estimate data packet round-trip times and transmission timeouts. Disabling RFC1323 timestamps may then result in poor performance in conditions of frequent packet losses. The Swappolube suggested default is to turn them off, but it may not in fact be optimal.
	* Default: "1"		* Default: "1"
	* Suggested: "0"		* Suggested: "0"

85.23.163.231: /* oom_kill_allocating_task */

85.23.163.231 — Tue, 06 Dec 2011 12:43:01 GMT

oom_kill_allocating_task

← Older revision		Revision as of 12:43, 6 December 2011
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	===oom_kill_allocating_task===		===oom_kill_allocating_task===

-	* Description: This enables or disables killing the OOM-triggering task in out-of-memory situations. If this is set to zero, the OOM killer will scan through the entire tasklist and select a task based on heuristics to kill. This normally selects a rogue memory-hogging task that frees up a large amount of memory when killed. If this is set to non-zero, the OOM killer simply kills the task that triggered the out-of-memory condition. This avoids the expensive tasklist scan and the potential randomness of the task that the ~~managed~~ picked to kill. If panic_on_oom is selected, it takes precedence over whatever value is used in oom_kill_allocating_task. Taken from: [http://www.linuxinsight.com/proc_sys_vm_oom_kill_allocating_task.html]	+	* Description: This enables or disables killing the OOM-triggering task in out-of-memory situations. If this is set to zero, the OOM killer will scan through the entire tasklist and select a task based on heuristics to kill. This normally selects a rogue memory-hogging task that frees up a large amount of memory when killed. If this is set to non-zero, the OOM killer simply kills the task that triggered the out-of-memory condition. This avoids the expensive tasklist scan and the potential randomness of the task that the manager picked to kill. If panic_on_oom is selected, it takes precedence over whatever value is used in oom_kill_allocating_task. Taken from: [http://www.linuxinsight.com/proc_sys_vm_oom_kill_allocating_task.html]
	* Default: "0"		* Default: "0"
	* Suggested: "1"		* Suggested: "1"

85.23.163.231: /* oom_kill_allocating_task */

85.23.163.231 — Tue, 06 Dec 2011 12:42:28 GMT

oom_kill_allocating_task

← Older revision		Revision as of 12:42, 6 December 2011
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	===oom_kill_allocating_task===		===oom_kill_allocating_task===

-	* Description: This enables or disables killing the OOM-triggering task in out-of-memory situations. If this is set to zero, the OOM killer will scan through the entire tasklist and select a task based on heuristics to kill. This normally selects a rogue memory-hogging task that frees up a large amount of memory when killed. If this is set to non-zero, the OOM killer simply kills the task that triggered the out-of-memory condition. This avoids the expensive tasklist scan. If panic_on_oom is selected, it takes precedence over whatever value is used in oom_kill_allocating_task. Taken from: [http://www.linuxinsight.com/proc_sys_vm_oom_kill_allocating_task.html]	+	* Description: This enables or disables killing the OOM-triggering task in out-of-memory situations. If this is set to zero, the OOM killer will scan through the entire tasklist and select a task based on heuristics to kill. This normally selects a rogue memory-hogging task that frees up a large amount of memory when killed. If this is set to non-zero, the OOM killer simply kills the task that triggered the out-of-memory condition. This avoids the expensive tasklist scan and the potential randomness of the task that the managed picked to kill. If panic_on_oom is selected, it takes precedence over whatever value is used in oom_kill_allocating_task. Taken from: [http://www.linuxinsight.com/proc_sys_vm_oom_kill_allocating_task.html]
	* Default: "0"		* Default: "0"
	* Suggested: "1"		* Suggested: "1"

85.23.163.231: /* Laptop Mode */

85.23.163.231 — Tue, 06 Dec 2011 12:41:14 GMT

Laptop Mode

← Older revision		Revision as of 12:41, 6 December 2011
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	===Laptop Mode===		===Laptop Mode===

-	* Description: laptop_mode is a knob that controls "laptop mode". When the knob is set, any physical disk I/O (that might have caused the hard disk to spin up, see <code>/proc/sys/vm/block_dump</code>) causes Linux to flush all dirty blocks. The result of this is that after a disk has spun down, it will not be spun up anymore to write dirty blocks, because those blocks had already been written immediately after the most recent read operation. The value of the laptop_mode knob determines the time between the occurrence of disk I/O and when the flush is triggered. A sensible value for the knob is 5 seconds. Setting the knob to 0 disables laptop mode.	+	* Description: laptop_mode is a knob that controls "laptop mode". When the knob is set, any physical disk I/O (that might have caused the hard disk to spin up, see <code>/proc/sys/vm/block_dump</code>) causes Linux to flush all dirty blocks. The result of this is that after a disk has spun down, it will not be spun up anymore to write dirty blocks, because those blocks had already been written immediately after the most recent read operation. The value of the laptop_mode knob determines the time between the occurrence of disk I/O and when the flush is triggered. A sensible value for the knob is 5 seconds. Setting the knob to 0 disables laptop mode. Since this mode has been designed with mechanical hard drives in mind to maximize the time between spin-ups that the flash memory in a cellphone does not need to worry itself with, it might actually be better to set this to zero.
	* Default: "0"		* Default: "0"
	* Suggested: "1"		* Suggested: "1"

saturn: /* Versions */

saturn — Sat, 16 Jul 2011 09:58:25 GMT

Versions

← Older revision		Revision as of 09:58, 16 July 2011
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	==Versions==		==Versions==

-	===1.4-2 ([http://maemo.org/downloads/product/Maemo5/swappolube/ ~~current~~])===	+	===1.4-2 ([http://maemo.org/downloads/product/Maemo5/swappolube/ stable version])===

	====Changelog====		====Changelog====

saturn: /* Main configuration */

saturn — Sat, 16 Jul 2011 09:56:22 GMT

Main configuration

← Older revision		Revision as of 09:56, 16 July 2011
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	[[Image:swappolubeMain_rotated.png\|280px\|Main View - rotated]]		[[Image:swappolubeMain_rotated.png\|280px\|Main View - rotated]]
-
	[[Image:swappolubeMain2_rotated.png\|280px]]		[[Image:swappolubeMain2_rotated.png\|280px]]

saturn: /* About */ made the screenshots smaller

saturn — Sat, 16 Jul 2011 09:54:55 GMT

About: made the screenshots smaller

← Older revision		Revision as of 09:54, 16 July 2011
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	(like all the rest of the windows it supports rotation).		(like all the rest of the windows it supports rotation).

-	[[Image:swappolube_about1.png\|~~360px~~]]	+	[[Image:swappolube_about1.png\|280px]]
-	[[Image:swappolube_about2.png\|~~360px~~]]	+	[[Image:swappolube_about2.png\|280px]]

	==Explanation of options==		==Explanation of options==