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Message #20212
[Bug 1236607] Dependencies.txt
apport information
** Attachment added: "Dependencies.txt"
https://bugs.launchpad.net/bugs/1236607/+attachment/3865824/+files/Dependencies.txt
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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.
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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.
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References