** Description changed: On a desktop system, on AC power, pm-utils reset the vm.dirty_ratio and vm.dirty_background_ratio at boot time (which also reset the vm.dirty_bytes and vm.dirty_background_bytes variables). When setting these variables using sysctl.conf, they are silently reset by the /usr/lib/pm-utils/power.d/laptop-mode script shipped with pm- utils. The only way to give specific values to these variables using sysctl is to remove this script. + + The default values applied by pm-utils are vm.dirty_background_ratio=5 + and vm.dirty_ratio=10. On my 64-bits system with 16 GB RAM, this amounts + to 1.6 GB for vm.dirty_bytes and 800 MB for vm.dirty_background_bytes + (see http://lwn.net/Articles/572911/). These values are not reasonable + for my system and pm-utils prevents me to change them. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: pm-utils 1.4.1-13ubuntu0.1 [modified: usr/lib/pm-utils/power.d/laptop-mode] ProcVersionSignature: Ubuntu 3.13.0-44.73-generic 3.13.11-ckt12 Uname: Linux 3.13.0-44-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 CurrentDesktop: XFCE Date: Mon Jan 5 23:00:09 2015 PackageArchitecture: all SourcePackage: pm-utils UpgradeStatus: Upgraded to trusty on 2014-04-21 (259 days ago)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1407818 Title: pm-utils reset the vm.dirty_ratio and vm.dirty_background_ratio variables To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/1407818/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
