Public bug reported: Binary package hint: linux-image-2.6.38-7-generic
I often copy data from a server using rsync against a local USB disk. I did this now for the first time since I upgraded to Natty dev a few days ago and the system becomes almost unusable while rsync is running. Before I used Karmic and never had any problems with rsync running in the background. The system is a notebook with a Core2 Duo CPU and 2 GB physical RAM. As soon as rsync is running, kswapd0 completely eats one of the CPU cores and the system is extremely unresponsive. As one can see in the following "free" output, *lots* of data is cached, but not even half of the memory is used by applications. The system even does not actually swap very much, but kswapd0 still works like mad, whatever it does. total used free shared buffers cached Mem: 2047288 2030620 16668 0 396516 975876 -/+ buffers/cache: 658228 1389060 Swap: 1992024 317748 1674276 I tried lowering the swappiness from 60 to 20 and while the system stopped swapping even the bit it did before, system responsiveness was only slightly improved and kswapd0 was stiil using 100% of one of the CPU cores. ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: linux-image-2.6.38-7-generic 2.6.38-7.39 Regression: Yes Reproducible: Yes ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38 Uname: Linux 2.6.38-7-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xdc240000 irq 45' Mixer name : 'Conexant CX20549 (Venice)' Components : 'HDA:14f15045,173410ad,00100100' Controls : 21 Simple ctrls : 10 Date: Fri Apr 1 21:34:23 2011 HibernationDevice: RESUME=UUID=377826f7-d8aa-4b83-9605-6ba87d47aeea MachineType: FUJITSU SIEMENS Amilo Si 1520 ProcEnviron: LANGUAGE= LANG=de_DE@euro SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-7-generic root=UUID=37d94e9a-f57d-4c87-b661-20c037b7643e ro quiet RelatedPackageVersions: linux-restricted-modules-2.6.38-7-generic N/A linux-backports-modules-2.6.38-7-generic N/A linux-firmware 1.49 SourcePackage: linux UpgradeStatus: Upgraded to natty on 2011-03-30 (2 days ago) dmi.bios.date: 07/21/2006 dmi.bios.vendor: Phoenix dmi.bios.version: 1.10 dmi.board.name: 10AD dmi.board.vendor: FUJITSU dmi.board.version: 3D22 dmi.chassis.type: 10 dmi.chassis.vendor: FUJITSU SIEMENS dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenix:bvr1.10:bd07/21/2006:svnFUJITSUSIEMENS:pnAmiloSi1520:pvrRev1:rvnFUJITSU:rn10AD:rvr3D22:cvnFUJITSUSIEMENS:ct10:cvrN/A: dmi.product.name: Amilo Si 1520 dmi.product.version: Rev 1 dmi.sys.vendor: FUJITSU SIEMENS ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug kernel-fs natty needs-upstream-testing regression-proposed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/747707 Title: kswapd0 freaks out if rsync runs on an USB disk -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs