[Lenovo Thinkpad X100e] - Network/bandwidth test fails.

[Greg Vallande]

Running Ubuntu 11.10 - Checkbox (0.12.11~ppa35.11.10) - Running the networking bandwidth portion of the test fails. Attempted via both wireless and wired interface (Networking works otherwise)

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: linux-image-3.0.0-12-generic 3.0.0-12.20
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
NonfreeKernelModules: fglrx
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
ApportVersion: 1.23-0ubuntu3
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: g 1492 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xd0600000 irq 16'
   Mixer name : 'Conexant CX20582 (Pebble)'
   Components : 'HDA:14f15066,17aa21b2,00100301'
   Controls : 8
   Simple ctrls : 5
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 6XHT42WW-1.182000'
   Mixer name : 'ThinkPad EC 6XHT42WW-1.182000'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
CheckboxCommand: network_bandwidth_test --log-level=info --scan=3
CheckboxData: 2012-02-23 15:04:08,271 INFO FAIL: Unacceptable network effective rate found for [wlan0]
CheckboxDescription: Test to measure the network bandwidth
CheckboxTest: networking/bandwidth
Date: Thu Feb 23 15:04:20 2012
HibernationDevice: RESUME=UUID=652e5e8a-8a49-46c2-b592-a85ff302bf32
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
MachineType: LENOVO 287622U
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_US.UTF-8
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=64f5092b-e786-4644-a65e-a53ac43c19d0 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.0.0-12-generic N/A
 linux-backports-modules-3.0.0-12-generic N/A
 linux-firmware 1.60
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/28/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6XET46WW (1.29 )
dmi.board.name: 287622U
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6XET46WW(1.29):bd10/28/2010:svnLENOVO:pn287622U:pvrThinkPadX100e:rvnLENOVO:rn287622U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 287622U
dmi.product.version: ThinkPad X100e
dmi.sys.vendor: LENOVO

[Daniel Manrique (roadmr)]

Hi,

Could you run this on the test machine and post the output here?

/usr/share/checkbox/scripts/network_bandwidth_test --log-level=debug --scan=3

[Greg Vallande (gvallande)]

Hi Daniel, Here's the info you requested:

2012-02-23 15:39:27,364 DEBUG Running command: ifconfig -a
2012-02-23 15:39:27,388 DEBUG No targets found for [lo]
2012-02-23 15:39:27,389 DEBUG Running command: nmap -n -sP 10.0.1.43/24
2012-02-23 15:39:28,895 DEBUG Running command: iwconfig wlan0
2012-02-23 15:39:28,962 DEBUG Testing wlan0/54-Mbps
2012-02-23 15:39:28,964 DEBUG Running command: ping -c 191 -q -f -t 1 -I wlan0 -s 65507 10.0.1.202
2012-02-23 15:39:41,116 DEBUG Running command: ping -c 8334 -q -f -t 1 -I wlan0 -s 1472 10.0.1.202
2012-02-23 15:40:09,541 DEBUG Running command: iwconfig wlan0
2012-02-23 15:40:09,555 DEBUG Running command: ping -c 191 -q -f -t 1 -I wlan0 -s 65507 10.0.1.132
2012-02-23 15:40:31,973 DEBUG Running command: ping -c 8334 -q -f -t 1 -I wlan0 -s 1472 10.0.1.132
2012-02-23 15:41:02,538 DEBUG Running command: iwconfig wlan0
2012-02-23 15:41:02,553 DEBUG Running command: ping -c 191 -q -f -t 1 -I wlan0 -s 65507 10.0.1.48
2012-02-23 15:41:13,267 DEBUG Running command: ping -c 8334 -q -f -t 1 -I wlan0 -s 1472 10.0.1.48
2012-02-23 15:41:44,745 DEBUG Running command: iwconfig wlan0
2012-02-23 15:41:44,759 INFO FAIL: Unacceptable network effective rate found for [wlan0]

[Daniel Manrique (roadmr)]

For the test to pass, effective data rate would have to be 5.4 Mbps or above, this is 10% of the max theoretical rate so the test is pretty lenient, for it to fail the system must be having some serious performance issues. We have seen some systems dip as low as 2 Mbps, which indicates a badly performing wireless/driver, so that may be what's happening here.

At this point I think the best thing to do would be to run the wireless iperf test against the wireless testing mini-lab to get more accurate performance data.

Once we have more accurate information we can decide whether this problem affects the system's certification status or merits adding a note to the certificates.

Thanks!

[Greg Vallande (gvallande)]

Moving this bug to lexington-lab until iperf is setup to retest the wireless interface.

[Daniel Manrique (roadmr)]

cid for this box is https://certification.canonical.com/hardware/201011-6817

[Greg Vallande (gvallande)]

Re-ran the iperf testing 50x and generated proper results regarding threshold of acceptable levels for the wireless test.