| ailo | abogani: -lowlatency is not performing as good as before. Do you know why? | 11:12 |
|---|---|---|
| ailo | Performance while watching flash videos seems to have improved, but I can't get as low latency as before. | 11:13 |
| persia | ailo: As you appear to have found issues with the change to 2.6.38 for both -generic and -lowlatency, I wonder if it's something related to the version change, rather than something about specific binaries. | 11:13 |
| ailo | persia: I should do some more testing. I should compare some different kernels to see if it is only kernel related too. | 11:14 |
| ailo | persia: Do you think it's possible to tune priority outside of the kernel? | 11:15 |
| persia | Yes, it could be something else, but the key is that you need to consider the kernel version as much as the config. | 11:16 |
| persia | I don't understand the question about priority | 11:16 |
| ailo | If I wasn't dreaming, I saw a huge difference with the same -generic kernel (2.6.38-1) after a few days when I tested again | 11:17 |
| persia | That points at something else then. | 11:17 |
| ailo | persia: Maybe nouveau has higher priority then before? | 11:17 |
| persia | Huh? | 11:18 |
| ailo | just guessing. I'm thinking maybe it's unity-related somehow. | 11:18 |
| ailo | I don't know anything about what could adjust the balance in setting priorities | 11:19 |
| persia | What do you mean "setting priorities"? Also, what does this have to do with nouveau or unity? | 11:19 |
| ailo | persia: I'm just thinking some work has been done on Unity, which causes audio devices to get less priority. | 11:20 |
| ailo | As I said, I have no idea what would do that, or how. | 11:20 |
| persia | What do you mean by "priority"? | 11:20 |
| ailo | What should I call it, when jack is less reliable than before? I guess it could be anything distracting it. | 11:21 |
| persia | I don't understand at all. | 11:24 |
| persia | Please describe the issue you are seeing, specifically, and without guessing as to source. | 11:24 |
| ailo | persia: I get occasional xruns using 64 frames/period. Just a couple of weeks ago, I got zero. | 11:24 |
| ailo | Now, I can probably use 128 frames/period with getting 0 xruns | 11:25 |
| ailo | The most recent change has been with graphics. Flash has improved, but it doesn't seem to have affected audio performance | 11:27 |
| persia | Ah, OK. | 11:27 |
| persia | You'd want to check recent upgrades, but I'd suspect JACK, the kernel, or the core libraries before anything else. | 11:28 |
| persia | edge applications are unlikely to affect anything. | 11:28 |
| persia | Except in the case where some application has periodic or similar resource use that interrupts current operations. You might check the usage of the various indicators and applets: I know network-manager was unpredictable: it may be that more things are becoming so (in which case, these may be better removed) | 11:29 |
| ailo | persia: The -generic was performing as well as -lowlatency for a while (2.6.38-1), but stopped doing that. Now, it's not working that great at all. | 11:31 |
| ailo | Seems like qjackctl is freezing up Youtube, even when jackd is not running. | 11:54 |
| persia | That's highly unlikely, unless you have hardware memory issues. | 11:57 |
| ailo | It's only flash freezing. Nothing else | 11:58 |
| ailo | I mean, changing to another flash video makes the browser freeze, sorry | 11:59 |
| ailo | Trying to see what log to look into | 11:59 |
| ailo | As soon as I quit qjackctl the browser starts working again, so I'm assuming this has something to do with PA | 12:01 |
| persia | Ah, yes. It may. I forgot about the qjackctl/PA thing. | 12:03 |
| ailo | persia: right, of course. qjackctl suspends PA entirely, while jackd only grabs the device that is to be used, if not available | 12:06 |
| persia | Right. That needs cleaning up. | 12:06 |
| abogani | weird | 12:46 |
| ailo_at | I added a new set of test results in https://wiki.ubuntu.com/RealTime | 12:46 |
| ailo_at | 2.6.38-1 lowlatency seems to perform as well as before, while the same version of -generic has changed | 12:48 |
| scott-work | TheMuso: did you push the patch for the gnome-classic xsession bug? i got a bug email and just wanted to make sure what was going on :) | 12:59 |
| abogani | ailo_at: Amd64 or i386? Do you have -1-lowlatency and -3-lowlatency installed side by side on the same machine? | 13:00 |
| ailo_at | abogani: I must admit I have yet not tested on amd64. I will install it today. | 13:02 |
| abogani | ailo_at: It isn't necessary. | 13:03 |
| ailo_at | These tests were all done on the same machine | 13:03 |
| abogani | No packages update in between, right? | 13:04 |
| ailo_at | Not between the tests made on the same day | 13:04 |
| scott-work | abogani: how do i get *your* kernel from git? | 14:21 |
| scott-work | abogani: i'm not really familiar with git but i understand it's a cvs much like other and i can find the commands easy enough | 14:21 |
| scott-work | abogani: but from which repo do i need to get your kernel and how do i make sure it is yours | 14:21 |
| ailo_at | I did "git clone git://kernel.ubuntu.com/abogani/ubuntu-natty-lowlatency.git aboganis-lowlatency" | 14:22 |
| ailo_at | scott-work: If you just want to get the source, that command should do. | 14:25 |
| scott-work | ailo_at: thanks! | 14:47 |
| scott-work | i wasn't sure which repository or how to get his directly but this should do it | 14:48 |
| scott-work | abogani: this is the kernel you wanted me to get isn't it? | 14:48 |
| abogani | scott-work: Yeah. | 14:49 |
| scott-work | abogani: i will download it tonight then :) | 14:51 |
| scott-work | abogani: do you want to mention something now for me to look at in particular tonight? or wait until tomorrow morning? | 14:52 |
| abogani | scott-work: Clone also meta git tree. | 14:53 |
| scott-work | by the way, "tonight" for me is about +10 hours hence and "tomorrow morning" is about +24 hours | 14:53 |
| abogani | scott-work: Ok | 14:53 |
| ailo_at | scott-work: Is the video task-sel still supposed to fail? | 20:11 |
| scott-work | ailo_at: no, no...it was fixed when we dropped qdvdauthor from the seeds | 20:49 |
| ailo_at | scott-work: My install failed today | 20:49 |
| scott-work | ailo_at: i say "fixed", but maybe there is another problem happening (or continuing to happen) | 20:49 |
| ailo_at | Also, I have corrupted graphics, so I'm unable to use the system at all :( | 20:52 |
| scott-work | ailo_at: are you installing this onto a vanilla ubuntu install and then "upgrading" to ubuntu studio? | 21:09 |
| scott-work | or a full install from dvd? | 21:10 |
| ailo_at | scott-work: Full install from DVD, except for the video task-sel | 21:10 |
| TheMuso | ScottL: Yes that was me. | 22:11 |
| TheMuso | I've also updated to the latest Debian revisions of jack and jack2, as well as requested a sync for latest libffado from Debian. | 22:11 |
| ScottL | TheMuso, i didn't think it would be anyone else but i wanted to make sure nothing funny was going on | 22:36 |
| TheMuso | heh ok. | 22:36 |
| ScottL | TheMuso, plus i wanted to say, "thank you" :) | 22:36 |
| TheMuso | np | 22:36 |
| ScottL | so ailo_at , i might try to install the metapackage on my laptop just to see what happens | 22:46 |
| ailo_at | ScottL: I should retry my installation. It was amd64. Video didn't install as I said and for some reason graphics were corrupted. Grub menu had tiny, tiny fonts. | 22:47 |
| ScottL | ailo_at, i don't know really | 22:48 |
| ScottL | ailo_at, i remember that when i was testing the latest alpha image i had a failed installation on that computer | 22:48 |
| ScottL | which as also suffering trouble with kernel panic | 22:49 |
| ScottL | i thought it was my computer to be honest at the time and didn't pursue it | 22:49 |
| ailo_at | Me too (thinking it was my computer) | 22:49 |
| ScottL | lol | 22:49 |
| ScottL | i hope my computer doesn't explode when i try to install the video-meta :P | 22:51 |
| ailo_at | I would blame my corrupted graphics on the video driver. Maybe it was guessing my monitor settings wrong? | 22:51 |
| ailo_at | ScottL: So only two daily builds are saved? | 22:53 |
| ScottL | that is all that i am aware of | 22:55 |
| ailo_at | ScottL: Perhaps better to install from the alpha image, then. That should work, I guess. | 22:55 |
| ailo_at | I'm giving it another go today | 22:55 |
| ScottL | ailo_at, not necessarily, (alpha image should work) | 22:56 |
| ScottL | when installing the video-meta i had some weirdness going on with mime-types | 22:56 |
| ScottL | i took a screen shot of the output but not sure who should see it :/ | 22:57 |
| ScottL | going outside with kids/dogs | 22:58 |
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