@Christopher. Sorry, can't answer that question: i never run anything earlier than quantal on this hardware. On the previous laptop (thinkpad w500) where i run many earlier versions of ubuntu (including quantal for a few weeks) i did not notice that problem but then that laptop did have only 8GB of RAM (compared to the 16GB of the w530) on this one and as mentioned in problem description (and also as mentioned in bug 1107150) the problem seems to appear only as you get more allocated RAM. E.g., after the initial test with 3.15-rc5 and the relative quick arise of the problem, i booted with mem=15000M (resulting in 14362796 total mem instead of 16xxxxxx) and so far i've seen the problem less and could (at least temporarily) resolve it using the sysctl drop_caches hack (something which did not work anymore for the previous run with all RAM enabled)
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1290337 Title: [Lenovo ThinkPad W530] I/O slow down Status in “linux” package in Ubuntu: Incomplete Bug description: Since at least 12.10, symptoms are that as time goes by I/O gets slower and slower (primarily if not even only writes rather than reads). It can be temporarily cured via /sbin/sysctl -w vm.drop_caches=2 and/or /sbin/sysctl -w vm.drop_caches=3 but the problem will re-appear again sooner rather than later. The problem seems also somewhat proportional on how much RAM is allocated. It does not seem to appear with less than 8GB (i.e., i saw it first when switching to a 16GB laptop/ThinkPad w530) and is considerably worse when allowing all memory compared to, e.g., by using only ~14GB using the mem=14000M boot option. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-18-generic 3.11.0-18.32 ProcVersionSignature: Ubuntu 3.11.0-18.32-generic 3.11.10.4 Uname: Linux 3.11.0-18-generic i686 NonfreeKernelModules: nvidia wl ApportVersion: 2.12.5-0ubuntu2.2 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: msteiner 4131 F.... pulseaudio /dev/snd/controlC0: msteiner 4131 F.... pulseaudio /dev/snd/pcmC0D0p: msteiner 4131 F...m pulseaudio /dev/snd/seq: timidity 3237 F.... timidity CRDA: country IN: (2402 - 2482 @ 40), (N/A, 20) (5170 - 5250 @ 40), (N/A, 20) (5250 - 5330 @ 40), (N/A, 20), DFS (5735 - 5835 @ 40), (N/A, 20) Date: Mon Mar 10 17:47:12 2014 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=4a17fffe-b487-4abf-9df8-1846a925cf4b MachineType: LENOVO 2449A35 MarkForUpload: True ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-18-generic root=/dev/mapper/babbage2-root ro acpi_osi=Linux mem=14000M nox2apic rcutree.rcu_idle_gp_delay=1 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.11.0-18-generic N/A linux-backports-modules-3.11.0-18-generic N/A linux-firmware 1.116.2 SourcePackage: linux UpgradeStatus: Upgraded to saucy on 2013-10-25 (135 days ago) dmi.bios.date: 05/24/2013 dmi.bios.vendor: LENOVO dmi.bios.version: G5ET93WW (2.53 ) dmi.board.asset.tag: Not Available dmi.board.name: 2449A35 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG5ET93WW(2.53):bd05/24/2013:svnLENOVO:pn2449A35:pvrThinkPadW530:rvnLENOVO:rn2449A35:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 2449A35 dmi.product.version: ThinkPad W530 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1290337/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp