apport information ** Tags added: apport-collected
** Description changed: On Karmic, with 2.6.31-20, I have noticed an important decrease of performances while navigating CIFS shares (with mount.cifs) on a Windows 2003 server. (Compared to a older installation with 2.6.27-8). Navigating means here either using midnight commander, ls -l (with ls unaliased first...), rsync, etc.. The kind of performance degradation I am talking about is in the order of times ten or so. An rsync which takes less that 2 minutes on old hardware, now takes over 15 minutes on newer hardware! Doing a bit of investigation with tcpdump, we can see a lot QUERY_PATH_INFO requests happening which are not necessary as all the information is already returned by FIND_FIRST2 requests. A trivial example will illustrate it. Lets have a directory with 3 files inside. ls -l with my old machine, it gives: Protocol Info SMB Trans2 Request, QUERY_PATH_INFO, Query File All Info, Path: \Temp SMB Trans2 Response, QUERY_PATH_INFO SMB Trans2 Request, FIND_FIRST2, Pattern: \Temp\* SMB Trans2 Response, FIND_FIRST2, Files: . .. file1 file2 file3 With the new one, it gives: Protocol Info SMB Trans2 Request, QUERY_PATH_INFO, Query File All Info, Path: \Temp SMB Trans2 Response, QUERY_PATH_INFO SMB Trans2 Request, FIND_FIRST2, Pattern: \Temp\* SMB Trans2 Response, FIND_FIRST2, Files: . .. file1 file2 file3 SMB Trans2 Request, QUERY_PATH_INFO, Query File All Info, Path:\Temp\file1 SMB Trans2 Response, QUERY_PATH_INFO SMB Trans2 Request, QUERY_PATH_INFO, Query File All Info, Path:\Temp\file2 SMB Trans2 Response, QUERY_PATH_INFO SMB Trans2 Request, QUERY_PATH_INFO, Query File All Info, Path:\Temp\file3 SMB Trans2 Response, QUERY_PATH_INFO So for every file in the directory, as returned by the FIRST_FIND2 response, it does a QUERY_PATH_INFO, which does not bring any new information, all the attributes were already returned by FIRST_FIND2. Looking around in linux-cifs-client mailing list and contacting a few developers, it is believed this problem is now fixed in 2.6.31.13, commit f12f98dba6ea1517cd7fbb912208893b9c014c15. (cifs: fix length calculation for converted unicode readdir names) Will 2.6.31.13 make it to Karmic? Thanks, Seb. + --- + AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21. + AplayDevices: + **** List of PLAYBACK Hardware Devices **** + card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 + Architecture: i386 + ArecordDevices: + **** List of CAPTURE Hardware Devices **** + card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC0: seb 1416 F.... pulseaudio + Card0.Amixer.info: + Card hw:0 'Intel'/'HDA Intel at 0xd6700000 irq 22' + Mixer name : 'Realtek ALC268' + Components : 'HDA:10ec0268,1179ff66,00100003 HDA:11c11040,11790001,00100200' + Controls : 13 + Simple ctrls : 8 + DistroRelease: Ubuntu 10.04 + EcryptfsInUse: Yes + HibernationDevice: RESUME=UUID=aa796e4d-a2f7-4bbe-843b-770d3f422913 + InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429) + MachineType: TOSHIBA Satellite L300 + Package: linux (not installed) + ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=fdb933e6-993d-4a2e-b43a-99da4b76bd3b ro quiet splash acpi_osi=Linux + ProcEnviron: + PATH=(custom, user) + LANG=en_US.utf8 + SHELL=/bin/bash + ProcVersionSignature: Ubuntu 2.6.32-22.36-generic 2.6.32.11+drm33.2 + Regression: Yes + RelatedPackageVersions: linux-firmware 1.34 + Reproducible: Yes + RfKill: + 0: phy0: Wireless LAN + Soft blocked: no + Hard blocked: no + Tags: lucid kconfig regression-release needs-upstream-testing + Uname: Linux 2.6.32-22-generic i686 + UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare + dmi.bios.date: 06/04/2009 + dmi.bios.vendor: INSYDE + dmi.bios.version: 1.90 + dmi.board.asset.tag: Base Board Asset Tag + dmi.board.name: Portable PC + dmi.board.vendor: TOSHIBA + dmi.board.version: Base Board Version + dmi.chassis.asset.tag: No Asset Tag + dmi.chassis.type: 10 + dmi.chassis.vendor: Chassis Manufacturer + dmi.chassis.version: Chassis Version + dmi.modalias: dmi:bvnINSYDE:bvr1.90:bd06/04/2009:svnTOSHIBA:pnSatelliteL300:pvrPSLB8E-15E00PGE:rvnTOSHIBA:rnPortablePC:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion: + dmi.product.name: Satellite L300 + dmi.product.version: PSLB8E-15E00PGE + dmi.sys.vendor: TOSHIBA ** Attachment added: "AlsaDevices.txt" http://launchpadlibrarian.net/50674594/AlsaDevices.txt -- Slow CIFS navigation https://bugs.launchpad.net/bugs/571235 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
