apport information ** Attachment added: "ProcInterrupts.txt" https://bugs.launchpad.net/bugs/1236607/+attachment/3865829/+files/ProcInterrupts.txt
-- 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/1236607 Title: cifs.ko should default to CIFSMaxBufSize=65535 Status in “linux” package in Ubuntu: Incomplete Bug description: Win 7 and other clients can handle a CIFS max buffer size of 64k, and default to this value when talking to Windows or Linux SMB servers. The practical effect of this is drag-drop file operations in Windows can run at near gigabit speeds (80-90mb/s over a gigabit LAN) even when talking to a Linux Samba server. The 'cifs' filesystem on the other hand struggles to achieve this by default because it's buffer size is constrained to just 16k. Boosting the buffer size with a modprobe.d options file like so: options cifs CIFSMaxBufSize=65536 or even: options cifs CIFSMaxBufSize=130048 produces a speed up in file operations (as measured with rsync -W between two mountpoints, or dd | pv | dd) which is on par with the speed achieved by Windows - taking cifs from averaging 40-50 mb/s on my machine, to the 80-90 mb/s the same machine running Windows (and talking to a Linux samba server) can achieve. There doesn't seem to be any real downside to this in the common desktop use case in the modern age (memory is not a constraint), so shipping a modprobe.d cifs.conf file seems like a sensible way to close the perceived gap in user experience. --- ApportVersion: 2.9.2-0ubuntu8.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: will 3215 F.... pulseaudio /dev/snd/controlC2: will 3215 F.... pulseaudio /dev/snd/controlC0: will 3215 F.... pulseaudio CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. DistroRelease: LinuxMint 15 HibernationDevice: RESUME=UUID=0f40c3a5-e01e-4300-9363-384d60c1f893 InstallationDate: Installed on 2012-07-12 (452 days ago) InstallationMedia: Linux Mint 13 "Maya" - Release amd64 (20120520) IwConfig: eth0 no wireless extensions. lo no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. P67A-UD3P-B3 MarkForUpload: True NonfreeKernelModules: zfs zunicode zavl zcommon znvpair Package: linux 3.8.0.31.49 [origin: Ubuntu] PackageArchitecture: amd64 ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/ROOT/mint-13@/boot/vmlinuz-3.8.0-31-generic root=/dev/sdg3 ro loglevel=7 boot=zfs rpool=ssdpool ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8 RelatedPackageVersions: linux-restricted-modules-3.8.0-31-generic N/A linux-backports-modules-3.8.0-31-generic N/A linux-firmware 1.106 RfKill: 3: hci0: Bluetooth Soft blocked: no Hard blocked: no Tags: third-party-packages olivia Uname: Linux 3.8.0-31-generic x86_64 UnreportableReason: This is not an official LinuxMint package. Please remove any third party package and try again. UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom debian-tor dialout dip libvirtd lpadmin plugdev sambashare sudo vboxusers wireshark dmi.bios.date: 03/21/2012 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F9 dmi.board.name: P67A-UD3P-B3 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF9:bd03/21/2012:svnGigabyteTechnologyCo.,Ltd.:pnP67A-UD3P-B3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP67A-UD3P-B3:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: P67A-UD3P-B3 dmi.sys.vendor: Gigabyte Technology Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1236607/+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
