I believe my test case is flawed, so I cannot verify with certainty if
the issue is fixed or not. This is the same test case as I used before,
for which I posted code in a gist:
https://gist.github.com/stephank/764e3414d57bc3bcb6b3
Here's what I tried:
- I started two new c3.large machines from
As Stefan Bader mentions in #22, the current workaround is:
sudo ethtool -K eth0 sg off
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Title:
Dropped packets on EC2, xen_netfront:
Thanks for the continued help fixing this!
I couldn't reproduce it using redis-benchmark on EC2, but that's okay.
Scatter/gather IO is solely a performance flag in the driver? As in, it
won't affect applications?
The only effect I noticed after disabling it is that it's apparently
required for
I can't comment on the driver implementation details, but I can give
some further details about our experience.
The app in question was a second screen app for the dutch public
broadcasting network for the Eurovision Song Contest. The app was live
for two semi-finals on tuesday the 6th and
So I have a smaller test case. Basically, install Redis (from apt) on
one machine, and Node.js (binaries from nodejs.org) with the below
scripts on the other. Run pub.js once, and sub.js twice, this quickly
triggers the error. The first arg to each script is the address of the
redis machine; I use
If you'd like me to run this on EC2, I can give it a try. A custom
kernel would simply be a replacement package?
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Title:
Dropped packets on EC2,
For what it's worth, the MTU appears to differ per instance type. At
least c3.large has an MTU of 9000 by default, while m1.small has a
normal MTU of 1500.
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Public bug reported:
Running Ubuntu 14.04 LTS on EC2, we see a lot of the following in the
kernel log:
xen_netfront: xennet: skb rides the rocket: 19 slots
Each of these messages corresponds to a dropped TX packet, and
eventually causes our application's connections to break and timeout.
The machine is no longer running, but I can run apport-collect from a
similar machine. The only difference being that we've since added a line
to our startup script to reduce the MTU to 1500.
** Tags added: apport-collected
** Description changed:
Running Ubuntu 14.04 LTS on EC2, we see a lot
apport information
** Attachment added: ProcCpuinfo.txt
https://bugs.launchpad.net/bugs/1317811/+attachment/4108533/+files/ProcCpuinfo.txt
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apport information
** Attachment added: ProcEnviron.txt
https://bugs.launchpad.net/bugs/1317811/+attachment/4108534/+files/ProcEnviron.txt
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apport information
** Attachment added: ProcInterrupts.txt
https://bugs.launchpad.net/bugs/1317811/+attachment/4108535/+files/ProcInterrupts.txt
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apport information
** Attachment added: BootDmesg.txt
https://bugs.launchpad.net/bugs/1317811/+attachment/4108532/+files/BootDmesg.txt
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apport information
** Attachment added: UdevDb.txt
https://bugs.launchpad.net/bugs/1317811/+attachment/4108537/+files/UdevDb.txt
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Title:
apport information
** Attachment added: WifiSyslog.txt
https://bugs.launchpad.net/bugs/1317811/+attachment/4108539/+files/WifiSyslog.txt
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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apport information
** Attachment added: ProcModules.txt
https://bugs.launchpad.net/bugs/1317811/+attachment/4108536/+files/ProcModules.txt
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apport information
** Attachment added: UdevLog.txt
https://bugs.launchpad.net/bugs/1317811/+attachment/4108538/+files/UdevLog.txt
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Title:
Neither the Chromium 13 nightly nor Firefox 4 in Natty enable WebGL for
my card, though Firefox 4 does let me bypass its blacklist with an
envvar MOZ_GLX_IGNORE_BLACKLIST.
With that enabled, the page now displays correctly for me. Feel free to
close this bug.
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After some more experimentation, it looks like it's specifically a
problem with float literals, which are floored / truncated. Things work
when I simply replace them with uniforms and set their value in
JavaScript.
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Basic shaders produce incorrect output
https://bugs.launchpad.net/bugs/676183
Public bug reported:
Trying to build something on WebGL technology, I noticed that basic
shaders were producing incorrect output. The problem occurs on both
Firefox 4 and Chrome 7. I'm on Intel GM965 hardware, but strangely also
see the exact same problem when I install `libgl1-mesa-swrast` or
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Here's the example page as an attachment, for archiving.
Perhaps useful to add, some other things I've tried:
* Drawing interpolated color shades using a varying variable works.
* Functions like `dot` and `max` produce valid float output. For example,
using these two, I can implement just the
This may not be news, but for reference, I'm seeing the issue again in
0.9.18-0ubuntu1~ubuntuaudiodev2.
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Cannot maximize PC volume without producing crackling sound
https://bugs.launchpad.net/bugs/414956
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On 14-09-09 01:00, Pascal de Bruijn wrote:
Maybe that's matter of preference?
The fonts aren't blocky... They're just sharp and crisp...
The slightly hinted fonts give me a headache because of their
fuzzyness...
In the screenshot I uploaded, the characters sometimes touch or overlap
with
On 14-09-09 11:56, Pascal de Bruijn wrote:
Well, first, you're using a commercial font for comparison, which
renders particularly well with slight hinting, other fonts do not fare
as well. Also, are you using a non-standard size as well? 9pt?
I've attached a comparison using the default font
Pascal, I found this bug report through you blog post, FYI.
I'd like to add some counterweight here, but I'm not sure if I'm making
assumptions. Is changing the hinting option in the appearance control
panel the same as switching those symlinks?
Because setting the hinting to full there actually
Perhaps something else is wrong in my setup, but just 20 minutes ago I
did an update on a Karmic VM to what appears to be linux-virtual
2.6.31.10.21. The modules are still missing.
Booting from the server CD and dropping to a shell to investigate, the
last kernel version for which I can find the
AplayDevices:
List of PLAYBACK Hardware Devices
card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices:
List of CAPTURE Hardware Devices
card 0: Intel [HDA Intel], device 0:
** Attachment added: AlsaDevices.txt
http://launchpadlibrarian.net/31544754/AlsaDevices.txt
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** Attachment added: BootDmesg.txt
http://launchpadlibrarian.net/31544760/BootDmesg.txt
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** Attachment added: Card0.Amixer.values.txt
http://launchpadlibrarian.net/31544763/Card0.Amixer.values.txt
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** Attachment added: Card0.Codecs.codec.0.txt
http://launchpadlibrarian.net/31544765/Card0.Codecs.codec.0.txt
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** Attachment added: Card0.Codecs.codec.1.txt
http://launchpadlibrarian.net/31544770/Card0.Codecs.codec.1.txt
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** Attachment added: CurrentDmesg.txt
http://launchpadlibrarian.net/31544781/CurrentDmesg.txt
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** Attachment added: PciMultimedia.txt
http://launchpadlibrarian.net/31544787/PciMultimedia.txt
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** Attachment added: Dependencies.txt
http://launchpadlibrarian.net/31544782/Dependencies.txt
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** Attachment added: UserAsoundrc.txt
http://launchpadlibrarian.net/31544788/UserAsoundrc.txt
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** Attachment added: UserAsoundrcAsoundconf.txt
http://launchpadlibrarian.net/31544789/UserAsoundrcAsoundconf.txt
** Changed in: pulseaudio (Ubuntu)
Status: Incomplete = New
** Tags added: apport-collected
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Cannot maximize PC volume without producing crackling sound
Wow, that's quite a bunch of uploads there.
I should mention that on the current version of PulseAudio, which seems
to be 0.9.16~test7-14-g7ca81-0ubuntu2, I see some slight changes.
PulseAudio no longer restricts my slider movement in alsamixer, and
let's me slide the PCM all the way down without
On 09-09-09 18:58, Daniel T Chen wrote:
The current version is in the ubuntu-audio-dev PPA:
0.9.16~test7-14-g7ca81-0ubuntu3~ubuntuaudiodev1
I see. I will happily track the PPA in this installation.
The version there no longer changes the PCM volume, so I can set it to
74% permanently. This
I'm seeing this too. I will have to double check, but is it possible
that it is trying to kill init/upstart?
I believe at one point, I saw two lines starting with init: and
mentioning SIGSTOP first, then SIGCONT.
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Now that you mention it, yes I do. I tried the slider in the output
devices tab and it also slides all the way up to crackling sound.
Perhaps it's a PulseAudio thing rather than a gnome-media thing?
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Cannot maximize PC volume without producing crackling sound
Public bug reported:
Binary package hint: gnome-media
I often maximize volume on my PC in order to delegate volume control to
an external volume control wheel that speakers with amplifiers and some
headphones have.
The issue is that, maximizing the PCM volume on my laptop produces
crackling
Public bug reported:
Binary package hint: cherokee
The jaunty package of cherokee, 0.10.1-1, is built without TLS support.
Notice the distinct lack of libgnutls in this output:
# ldd /usr/sbin/cherokee-worker
linux-vdso.so.1 = (0x7fffca9fe000)
libcherokee-base.so.0 =
I had a similar problem trying to run a Python-based OpenGL application
on a minimal install.
It turns out, the Python OpenGL module uses the ctypes module to find
libGL, which in turns relies on binutils' objdump.
Try installing the binutils package, and see if this solves your
problem.
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