|From:||Nigel Cunningham <firstname.lastname@example.org>|
|To:||swsusp-devel <email@example.com>, Linux Kernel Mailing List <firstname.lastname@example.org>|
|Subject:||Software Suspend 2.0|
|Date:||Fri, 30 Jan 2004 17:24:25 +1300|
Software Suspend 2.0 for Linux 2.4 and 2.6 kernels is now available from http://swsusp.sf.net. The 2.0 release is a major advance over previous versions and includes the following features: - Support for HighMem, SMP and preemptive kernels. - Support for any number of swap partitions and/or files. - Full asynchronous I/O and readahead for synchronous I/O for maximum throughput. - Image compression (LZF and GZIP - the former is very fast and highly recommended). - Support for saving a full image of your memory, resulting in a fast, responsive system after resuming. - Support for plugins: data transformers (compression, encryption) and new storage backends (NFS support is planned). - Nice user interface (Bootsplash (http://www.bootsplash.org) compatible; - The ability to specify a maximum image size; - The ability to cancel a suspend by pressing Escape (for security, this can be disabled). - Speed and reliability. Software Suspend 2.0 has been extensively tested in a variety of configurations over many months. It is not guaranteed to be perfect, but bugs found will be hunted and fixed quickly. The Software Suspend website includes extensive documentation, including known issues (primarily DRI and USB support) and FAQS. A well-used mailing list is also available. Known issues with Suspend 2.0 are as follows: - DRI support is lacking power management support under 2.4 & 2.6. - AGP support under 2.6 is partially implemented. - USB support under 2.4 and 2.6 is lacking. - SMP support is currently 2.4 only. - Other drivers have varying degrees of power management support. - There is currently no support for discontig memory. - Suspend currently requires the PSE extension (check /proc/cpuinfo). - Highmem >4GB is currently not supported. - SMP currently suffers from lost interrupts during resuming - 2.6 does not currently flush caches properly before powering down. Some of these issues have work-arounds available: check the FAQs for details. Note that two patches are required to use suspend: one for the particular kernel version you are using (make sure you get the most recent for your kernel version), and a second (applied afterwards) contains the core files. Special thanks go to Gabor Kuti, Pavel Machek and Florent Chabaud for their work, which I have built on; to Michael Frank for many months of extensive testing of the code, to Marc Lehmann for supplying the LZF compressor, to Bernard Blackham for maintaining the swsusp.sf.net website and especially to LinuxFund.org for their sponsorship of the project, which has allowed me to work full-time on Software Suspend over the last four months. Finally, heres a little ditty, to be sung to the tune of the 'The Pirates Who Don't Do Anything' (http://www.bassbios.com/bodclan/pirates.mp3) I'm just a user who wanted to suspend, I didn't want to be a kernel hacker at all! I'm just a user who wanted to suspend, and now I'm happy because I can suspend. Well I've never been to LinuxConf and I've never written a device driver And I've never talked to Linus and I'm not an expert at BK And I don't normally get paid to do this and I don't own any hardware manuals And I've never been to Boston in the fall...  Up to 4GB.  SMP is currently only supported under 2.4; 2.6 support should not be far away. -- My work on Software Suspend is graciously brought to you by LinuxFund.org. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to email@example.com More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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