Bug#573912: linux-2.6: please enable ramzswap/compcache
On Mon, 2010-05-31 at 18:03 +0200, Alberto wrote: On Sun, 18 Apr 2010 at 18:13:55 +0100, Ben Hutchings wrote: Is the notify patch included on this module backport? It helps a lot to free compressed RAM not used anymore. Acording to the description, This does not appear to have been accepted upstream yet. If it has, please provide a reference (commit hash and repository URL). It seems that some patches have been accepted for 2.6.35: http://www.mail-archive.com/linux-mm...@lists.laptop.org/msg00182.html I don't have the skills to evaluate if backporting this feature would be feassible, or too intrusive. This looks possible to backport, but it will involve an ABI bump (hence a change of binary package names) so I won't apply the changes straight away. (For future reference, the commits are: commit b27256439568950f30864ccecaeb6dfb588089d5 Author: Nitin Gupta ngu...@vflare.org Date: Mon May 17 11:02:42 2010 +0530 swap: Add flag to identify block swap devices commit b3a27d0529c6e5206f1b60f60263e3ecfd0d77cb Author: Nitin Gupta ngu...@vflare.org Date: Mon May 17 11:02:43 2010 +0530 swap: Add swap slot free callback to block_device_operations commit 107c161b7ddeeb7da43509cc6b29211885ccd9af Author: Nitin Gupta ngu...@vflare.org Date: Mon May 17 11:02:44 2010 +0530 Staging: ramzswap: Handler for swap slot free callback though other ramszswap changes may also be needed.) Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse. signature.asc Description: This is a digitally signed message part
Bug#573912: linux-2.6: please enable ramzswap/compcache
On Tue, 2010-06-01 at 02:35 +0100, Ben Hutchings wrote: On Mon, 2010-05-31 at 18:03 +0200, Alberto wrote: On Sun, 18 Apr 2010 at 18:13:55 +0100, Ben Hutchings wrote: Is the notify patch included on this module backport? It helps a lot to free compressed RAM not used anymore. Acording to the description, This does not appear to have been accepted upstream yet. If it has, please provide a reference (commit hash and repository URL). It seems that some patches have been accepted for 2.6.35: http://www.mail-archive.com/linux-mm...@lists.laptop.org/msg00182.html I don't have the skills to evaluate if backporting this feature would be feassible, or too intrusive. This looks possible to backport, but it will involve an ABI bump (hence a change of binary package names) so I won't apply the changes straight away. Alberto gave a fake email address, so I won't put any more work into this until a real person requests it (with a separate bug report, as this one is now closed). Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse. signature.asc Description: This is a digitally signed message part
Bug#573912: linux-2.6: please enable ramzswap/compcache
On Sun, 18 Apr 2010 at 18:13:55 +0100, Ben Hutchings wrote: Is the notify patch included on this module backport? It helps a lot to free compressed RAM not used anymore. Acording to the description, This does not appear to have been accepted upstream yet. If it has, please provide a reference (commit hash and repository URL). It seems that some patches have been accepted for 2.6.35: http://www.mail-archive.com/linux-mm...@lists.laptop.org/msg00182.html I don't have the skills to evaluate if backporting this feature would be feassible, or too intrusive. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#573912: linux-2.6: please enable ramzswap/compcache
On Mon, 2010-04-12 at 22:15 +0200, Alberto wrote: Is the notify patch included on this module backport? It helps a lot to free compressed RAM not used anymore. Acording to the description, This does not appear to have been accepted upstream yet. If it has, please provide a reference (commit hash and repository URL). Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse. signature.asc Description: This is a digitally signed message part
Bug#573912: linux-2.6: please enable ramzswap/compcache
Is the notify patch included on this module backport? It helps a lot to free compressed RAM not used anymore. Acording to the description, This will enable 'swap free notify' feature which allows kernel to send callback to ramzswap as soon as a swap slot becomes free. So, we can immediately free memory allocated for this page, eliminating any stale data in (compressed) memory. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#573912: linux-2.6: please enable ramzswap/compcache
On Sun, Apr 04, 2010 at 08:06:23PM +0100, Ben Hutchings wrote: On Sun, 2010-04-04 at 11:21 -0700, Vagrant Cascadian wrote: On Sun, Apr 04, 2010 at 07:16:36AM +0100, Ben Hutchings wrote: On Thu, 2010-03-18 at 14:36 +1100, Trent W. Buck wrote: Vagrant Cascadian wrote: Please consider setting CONFIG_RAMZSWAP (a.k.a. compcache), which enables a ram based compressed swap device. i think it can be enabled as a module, but i'm not sure. ...snip... Would you like me to add this to 2.6.32 for squeeze, then? if it's not too difficult, sure! i had thought it only made it upstream as recently as 2.6.33. Indeed, but it seems trivial to backport. Please test it when 2.6.32-11 is released. thanks! it works, although needs rzscontrol from compcache-tools (in the NEW queue since december) in order to initialize the ramzswap device. i had the impression from the documentation that the module could initialize the device itself with the defaults, but this apparently isn't the case, at least not with my initial testing, or the version that was backported. live well, vagrant -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#573912: linux-2.6: please enable ramzswap/compcache
On Thu, 2010-03-18 at 14:36 +1100, Trent W. Buck wrote: Vagrant Cascadian wrote: Please consider setting CONFIG_RAMZSWAP (a.k.a. compcache), which enables a ram based compressed swap device. i think it can be enabled as a module, but i'm not sure. This feature is very useful to thin clients, embedded devices, or other environments with limited ram and no conventional swap device available. This is also useful for Debian Live images generated using the live-helper and live-initramfs packages. Using Sid's live-helper to build an Ubuntu 10.04 live image already results in a 25% ramzswap, so I guess Ubuntu have patched compcache into their default .32 kernel. Would you like me to add this to 2.6.32 for squeeze, then? Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse. signature.asc Description: This is a digitally signed message part
Bug#573912: linux-2.6: please enable ramzswap/compcache
On Sun, Apr 04, 2010 at 07:16:36AM +0100, Ben Hutchings wrote: On Thu, 2010-03-18 at 14:36 +1100, Trent W. Buck wrote: Vagrant Cascadian wrote: Please consider setting CONFIG_RAMZSWAP (a.k.a. compcache), which enables a ram based compressed swap device. i think it can be enabled as a module, but i'm not sure. This feature is very useful to thin clients, embedded devices, or other environments with limited ram and no conventional swap device available. This is also useful for Debian Live images generated using the live-helper and live-initramfs packages. Using Sid's live-helper to build an Ubuntu 10.04 live image already results in a 25% ramzswap, so I guess Ubuntu have patched compcache into their default .32 kernel. Would you like me to add this to 2.6.32 for squeeze, then? if it's not too difficult, sure! i had thought it only made it upstream as recently as 2.6.33. live well, vagrant -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#573912: linux-2.6: please enable ramzswap/compcache
On Sun, 2010-04-04 at 11:21 -0700, Vagrant Cascadian wrote: On Sun, Apr 04, 2010 at 07:16:36AM +0100, Ben Hutchings wrote: On Thu, 2010-03-18 at 14:36 +1100, Trent W. Buck wrote: Vagrant Cascadian wrote: Please consider setting CONFIG_RAMZSWAP (a.k.a. compcache), which enables a ram based compressed swap device. i think it can be enabled as a module, but i'm not sure. This feature is very useful to thin clients, embedded devices, or other environments with limited ram and no conventional swap device available. This is also useful for Debian Live images generated using the live-helper and live-initramfs packages. Using Sid's live-helper to build an Ubuntu 10.04 live image already results in a 25% ramzswap, so I guess Ubuntu have patched compcache into their default .32 kernel. Would you like me to add this to 2.6.32 for squeeze, then? if it's not too difficult, sure! i had thought it only made it upstream as recently as 2.6.33. Indeed, but it seems trivial to backport. Please test it when 2.6.32-11 is released. Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse. signature.asc Description: This is a digitally signed message part
Bug#573912: linux-2.6: please enable ramzswap/compcache
Vagrant Cascadian wrote: Please consider setting CONFIG_RAMZSWAP (a.k.a. compcache), which enables a ram based compressed swap device. i think it can be enabled as a module, but i'm not sure. This feature is very useful to thin clients, embedded devices, or other environments with limited ram and no conventional swap device available. This is also useful for Debian Live images generated using the live-helper and live-initramfs packages. Using Sid's live-helper to build an Ubuntu 10.04 live image already results in a 25% ramzswap, so I guess Ubuntu have patched compcache into their default .32 kernel. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#573912: linux-2.6: please enable ramzswap/compcache
Package: linux-2.6 Version: consider enabling CONFIG_RAMZSWAP in 2.6.33+ Severity: wishlist please consider setting CONFIG_RAMZSWAP (a.k.a. compcache), which enables a ram based compressed swap device. i think it can be enabled as a module, but i'm not sure. this feature is very useful to thin clients, embedded devices, or other environments with limited ram and no conventional swap device available. live well, vagrant -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
