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Message #22519
[Bug 1242085] Re: Low write speed to USB disks - do something!
apport information
** Tags added: apport-collected saucy
** Description changed:
Problem description:
I noticed very very low write speed to USB disks, especially to the new ones with USB 3.0. The "Disks" tool shows write speed about 7 MB/s !!! After start benchmark this tool shows write speed about 17 MB/s but imidiatelly goes below 10 MB/s. Same low speed during copy e.g. 3GB file manually to USB 3.0 disk. There is no such problem with read or access speed, only write. Unbelievable !!!
OS: Ubuntu 13.10 (64 bit mode).
Kernel: 3.11.0-12-generic
Disk: Kingston DT Ultimate G3 (32GB)
Similar low write speed problem is for disks:
- Seagate Expansion Portable Hard Drive 500GB (model inside ST500LT012-9WS142)
- Verbatim Store 'n' Go SuperSpeed USB 3.0 Portable Hard Drive 500GB (model inside ST500LM0 12 HN-M500MB)
I report this bug from PC, but the same bug is on my laptop Asus X55U.
Even the write speed on my laptop is more important to me.
What I found about this bug (VERY IMPORTANT NOTE):
- In old realese 12.04 LTS disks works OK.
- In 13.04 disks works faster than it is now in 13.10.
- If disk is formatted as NTFS the write speed is the lowest.
- If disk is formatted as EXT4 the speed is x2 better.
- If disk is formatted as FAT32 is low too.
- No matter if disk is connected via USB 2.0 or USB 3.0. The low write speed is always the same.
- This problem doesn't exists in Windows (so this is no hardware or BIOS problem).
- This problem doesn't exists in OpenSUSE (so this is no hardware or BIOS problem).
- There is no such problem with read or access speed. Write only.
- No matter if there is UEFI. Laptop Asus X55U has UEFI but PC has not.
- Hardware - no matter (same is on laptop ASUS X55U, I report from my PC now)
- No matter if Ubuntu is 32 or 64 bit mode.
+ ---
+ ApportVersion: 2.12.5-0ubuntu2
+ Architecture: amd64
+ AudioDevicesInUse:
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC1: user-pc 1424 F.... pulseaudio
+ /dev/snd/controlC0: user-pc 1424 F.... pulseaudio
+ CurrentDmesg:
+ [ 20.325188] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
+ [ 167.464491] systemd-hostnamed[2044]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
+ [ 1467.583396] systemd-hostnamed[2164]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
+ [ 5670.978467] systemd-hostnamed[2802]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
+ DistroRelease: Ubuntu 13.10
+ HibernationDevice: RESUME=UUID=4b9c34cd-9ce1-4ac3-ac15-3801b2fcc06b
+ InstallationDate: Installed on 2013-10-18 (1 days ago)
+ InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
+ IwConfig:
+ eth0 no wireless extensions.
+
+ eth1 no wireless extensions.
+
+ lo no wireless extensions.
+ MachineType: System manufacturer System Product Name
+ MarkForUpload: True
+ Package: linux (not installed)
+ ProcFB: 0 radeondrmfb
+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-12-generic root=UUID=2f9a3d14-fd4f-4d71-87d1-05e40c87052e ro quiet splash vt.handoff=7
+ ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
+ RelatedPackageVersions:
+ linux-restricted-modules-3.11.0-12-generic N/A
+ linux-backports-modules-3.11.0-12-generic N/A
+ linux-firmware 1.116
+ RfKill:
+
+ Tags: saucy
+ Uname: Linux 3.11.0-12-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
+ dmi.bios.date: 09/23/2005
+ dmi.bios.vendor: American Megatrends Inc.
+ dmi.bios.version: 0519
+ dmi.board.name: P5WD2-Premium
+ dmi.board.vendor: ASUSTeK Computer INC.
+ dmi.board.version: Rev 1.xx
+ dmi.chassis.asset.tag: Asset-1234567890
+ dmi.chassis.type: 3
+ dmi.chassis.vendor: Chassis Manufacture
+ dmi.chassis.version: Chassis Version
+ dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0519:bd09/23/2005:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5WD2-Premium:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
+ dmi.product.name: System Product Name
+ dmi.product.version: System Version
+ dmi.sys.vendor: System manufacturer
** Attachment added: "AlsaInfo.txt"
https://bugs.launchpad.net/bugs/1242085/+attachment/3883794/+files/AlsaInfo.txt
--
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https://bugs.launchpad.net/bugs/1242085
Title:
Low write speed to USB disks - do something!
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
Problem description:
I noticed very very low write speed to USB disks, especially to the new ones with USB 3.0. The "Disks" tool shows write speed about 7 MB/s !!! After start benchmark this tool shows write speed about 17 MB/s but imidiatelly goes below 10 MB/s. Same low speed during copy e.g. 3GB file manually to USB 3.0 disk. There is no such problem with read or access speed, only write. Unbelievable !!!
OS: Ubuntu 13.10 (64 bit mode).
Kernel: 3.11.0-12-generic
Disk: Kingston DT Ultimate G3 (32GB)
Similar low write speed problem is for disks:
- Seagate Expansion Portable Hard Drive 500GB (model inside ST500LT012-9WS142)
- Verbatim Store 'n' Go SuperSpeed USB 3.0 Portable Hard Drive 500GB (model inside ST500LM0 12 HN-M500MB)
I report this bug from PC, but the same bug is on my laptop Asus X55U.
Even the write speed on my laptop is more important to me.
What I found about this bug (VERY IMPORTANT NOTE):
- In old realese 12.04 LTS disks works OK.
- In 13.04 disks works faster than it is now in 13.10.
- If disk is formatted as NTFS the write speed is the lowest.
- If disk is formatted as EXT4 the speed is x2 better.
- If disk is formatted as FAT32 is low too.
- No matter if disk is connected via USB 2.0 or USB 3.0. The low write speed is always the same.
- This problem doesn't exists in Windows (so this is no hardware or BIOS problem).
- This problem doesn't exists in OpenSUSE (so this is no hardware or BIOS problem).
- There is no such problem with read or access speed. Write only.
- No matter if there is UEFI. Laptop Asus X55U has UEFI but PC has not.
- Hardware - no matter (same is on laptop ASUS X55U, I report from my PC now)
- No matter if Ubuntu is 32 or 64 bit mode.
---
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: user-pc 1424 F.... pulseaudio
/dev/snd/controlC0: user-pc 1424 F.... pulseaudio
CurrentDmesg:
[ 20.325188] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[ 167.464491] systemd-hostnamed[2044]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
[ 1467.583396] systemd-hostnamed[2164]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
[ 5670.978467] systemd-hostnamed[2802]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
DistroRelease: Ubuntu 13.10
HibernationDevice: RESUME=UUID=4b9c34cd-9ce1-4ac3-ac15-3801b2fcc06b
InstallationDate: Installed on 2013-10-18 (1 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
IwConfig:
eth0 no wireless extensions.
eth1 no wireless extensions.
lo no wireless extensions.
MachineType: System manufacturer System Product Name
MarkForUpload: True
Package: linux (not installed)
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-12-generic root=UUID=2f9a3d14-fd4f-4d71-87d1-05e40c87052e ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
RelatedPackageVersions:
linux-restricted-modules-3.11.0-12-generic N/A
linux-backports-modules-3.11.0-12-generic N/A
linux-firmware 1.116
RfKill:
Tags: saucy
Uname: Linux 3.11.0-12-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 09/23/2005
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0519
dmi.board.name: P5WD2-Premium
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0519:bd09/23/2005:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5WD2-Premium:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
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References