https download performance significantly worse in precise than lucid
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
openssl (Ubuntu) |
Expired
|
Medium
|
Unassigned | ||
wget (Ubuntu) |
Invalid
|
Medium
|
Unassigned |
Bug Description
In Canonical's openstack installation, I noticed during publishing images that downloads on lucid seemed to occur faster than I could do the same download on precise.
$ wget https:/
In the above, cloud-images.
very strangely (and thus making this harder to isolate), if I change 'https' above to 'http', both lucid and precise download in the 65-80M/S range.
Ie, https download is significantly slower in precise compared to lucid.
One likely unrelated point, in EC2, using the url
https:/
from a m1.large instance, lucid and precise are both getting in the 25-30M/s range. With the http url they both get in the 40M/s range.
Ie, there seems no real difference on EC2.
I do realize that this is difficult to isolate, and it is even possible that my results are affected by other guests on the same host or load on the http server at that time. However, the results have been very consistent over multiple days, over new instances.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.2.0-20-virtual x86_64
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 1.95-0ubuntu1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
CurrentDmesg: [ 21.910968] init: plymouth-
Date: Fri Mar 23 19:29:54 2012
Ec2AMI: ami-00000000
Ec2AMIManifest: FIXME
Ec2Availability
Ec2InstanceType: m1.small
Ec2Kernel: unavailable
Ec2Ramdisk: unavailable
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
MachineType: Bochs Bochs
PciMultimedia:
ProcEnviron:
TERM=screen
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=
RfKill: Error: [Errno 2] No such file or directory
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2007
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnBochs:
dmi.product.name: Bochs
dmi.sys.vendor: Bochs
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
Changed in openssl (Ubuntu): | |
importance: | Undecided → Medium |
Hi Scott,
Would it be possible for you to test the latest upstream kernel[0], to see if it also has this issue?
[0] http:// kernel. ubuntu. com/~kernel- ppa/mainline/