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| GauravButola | Hello guys | 17:14 |
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| GauravButola | Does someone hold classes here? | 17:15 |
| === ajain is now known as abhijain | ||
| pleia2 | yes, but there is nothing currently on the schedule | 17:17 |
| GauravButola | ple | 17:19 |
| GauravButola | ohhh | 17:20 |
| jono | hey | 17:46 |
| jono | Please ask your questions in #ubuntu-classroom-chat | 17:47 |
| === ChanServ changed the topic of #ubuntu-classroom to: Welcome to the Ubuntu Classroom - https://wiki.ubuntu.com/Classroom || Support in #ubuntu || Upcoming Schedule: http://is.gd/8rtIi || Questions in #ubuntu-classroom-chat || Survey: http://tinyurl.com/UUDSurveyJan11 || Current Session: Q&\;A w/ Pete Graner, Kernel Engineering Manager - Instructors: pgraner | ||
| jono | and I will paste them in here for pgraner | 17:47 |
| ClassBot | Logs for this session will be available at http://irclogs.ubuntu.com/2011/02/04/%23ubuntu-classroom.html following the conclusion of the session. | 17:47 |
| jono | Please only ask kernel questions, and I will paste those for pgraner | 17:47 |
| jono | alrighty folks, ask your kernel questions in #ubuntu-classroom-chat! | 17:48 |
| jono | <UndiFineD> QUESTION: what is the impact on performance on the BLK removal ? | 17:48 |
| jono | pgraner, ^ | 17:48 |
| pgraner | UndiFineD, should be a positive impact, and will make things more maintainable long term | 17:49 |
| pgraner | UndiFineD, will be more noticeable on multi-core boxes | 17:49 |
| pgraner | next | 17:50 |
| jono | <kim0> QUESTION: Does Ubuntu server have certain tweaks applied to its kernel vs desktop | 17:51 |
| pgraner | kim0, the only real tweaks are a few config settings and the increase on the number of CPUs the kernel supports | 17:51 |
| pgraner | kim0, and the default IO scheduler is Deadline | 17:52 |
| pgraner | next | 17:52 |
| jono | <OkDucky> question: why does the performance of ubuntu (10.10) reduce a fair bit when under heavy hdd load? is there work being done to improve this? (it could just be my hardware of course..) | 17:53 |
| pgraner | OkDucky, the IO Scheduler for 2.6.38 has been revamped so you should start to see better performance | 17:54 |
| pgraner | next | 17:54 |
| jono | <Taek> Question : How exactly does the glorified 200 lines kernel patch will benefit in 11.04 | 17:54 |
| jono | pgraner, ^ | 17:56 |
| pgraner | Taek, That is the auto cgroup stuff, isolate session tasks, it helps balance the load and will help increase performance | 17:56 |
| pgraner | jono, sorry takes a bit to type this | 17:56 |
| jono | :-) | 17:56 |
| pgraner | Tach, bottom line is you will see a benefit on heavy IO | 17:57 |
| pgraner | next | 17:57 |
| jono | <m4n1sh> Question: What about btrfs? When is it going to be in a usable situation fit for default install? | 17:57 |
| pgraner | m4n1sh, Post 11.04 we are expecting it to shore up to be a default, right now its in the installer but you have to manually select it | 17:58 |
| pgraner | next | 17:58 |
| jono | <sebsebseb> QUESTION: What are the main features of the next kernel? | 17:58 |
| pgraner | jono, look at kernelnewbies.org for the 2.6.38 kernel, way to many to list here | 17:59 |
| pgraner | next | 17:59 |
| jono | <Jay-Cee> QUESTION: Any improvements with btrfs performance? | 17:59 |
| pgraner | sebsebseb, also look at the A2 release notes some more info there as well | 17:59 |
| pgraner | Jay-Cee, file deletion is noticeable, but as with any dev system things are in flux | 18:00 |
| pgraner | s/noticeable/noticeably faster/ | 18:01 |
| pgraner | next | 18:01 |
| jono | <Tach> QUESTION: will there be any fixes with the issues with input of some joysticks being detected as mouse input. An example of such an issue is here: https://bugs.launchpad.net/ubuntu/+source/hal/+bug/421812 | 18:01 |
| pgraner | Tach, not sure this is an edev issue with X, not kernel per se | 18:02 |
| pgraner | next | 18:02 |
| jono | <m4n1sh> Question: Lennart posted a 2 line solution for the glorified 200 lines patch for kernel. Was Lennart's solution better than that of kernel? | 18:03 |
| pgraner | m4n1sh, Lennart's solution had a limited use case and was not general purpose unfortunately | 18:04 |
| pgraner | next | 18:04 |
| jono | <m4n1sh> Question: I heard that installing ubuntu using btrfs as FS takes some hours to install. Is it true? Any special reason for this problem (provided it is true) | 18:04 |
| pgraner | m4n1sh, that used to be the case, more recent versions of the kernel have fixed that specific issue afaik | 18:05 |
| pgraner | next | 18:05 |
| jono | <kim0> QUESTION: How does the server's kernel compare to other enterprise distros' kernels , i.e. does the team regularly sync drivers for Enterprise grade cards (SAS, NICs, LOMs...) | 18:06 |
| pgraner | kim0, So this is a multipart answer so bear with me while I type it out | 18:07 |
| pgraner | We have a pkg call LBM that get updates on a few drivers (LBM == Linux Backport Modules) | 18:07 |
| pgraner | We also have for LTS releases backported kernels that have the latest in upstream hardware enablement | 18:08 |
| pgraner | the kernels are call LTS Backport Kernels and are basically the latest release kernel running on the last LTS | 18:09 |
| pgraner | Keep in mind this is NOT A DESKTOP feature | 18:09 |
| pgraner | it is only supported on the server flavor | 18:09 |
| pgraner | so yes we have some level between the two to refresh drivers for servers | 18:09 |
| pgraner | next | 18:09 |
| jono | <m4n1sh> Question: The problems with suspend/resume/hibernate lies in which part of the kernel? Is the situation improving? | 18:10 |
| pgraner | m4n1sh, the issue isn't really with the kernel, it lies with the system BIOS, most are broken, specifically within the ACPI portion of the BIOS. | 18:11 |
| pgraner | we have a tool call fwts (in universe) that will test your bios and tell you what is broken | 18:11 |
| pgraner | run that if you are having issues then attach the out put when you file a bug | 18:11 |
| pgraner | it will help us determine if its a true kernel issue (rare) or a broken BIOS | 18:12 |
| pgraner | next | 18:12 |
| jono | <doctormo> QUESTION: What should you do if a kernel bug makes ubuntu unstable for a target machine? downgrade kernel or downgrade os? | 18:12 |
| pgraner | doctormo, downgrade the kernel, way easier | 18:12 |
| pgraner | next | 18:13 |
| jono | <Taek> QUESTION: Is there plans or even talk about having a system update without having to restart or install third party software such as ksplice. | 18:13 |
| pgraner | Taek, the kernel will support kplice however we have no plans to do such a thing, there is already a commercial venture | 18:14 |
| pgraner | that does that | 18:14 |
| pgraner | next | 18:14 |
| jono | <sebsebseb> QUESTION: Do you think that Ubuntu Desktop might use Ksplice in the future? | 18:15 |
| pgraner | sebsebseb, No as stated in the last question | 18:15 |
| pgraner | next | 18:15 |
| jono | <doctormo> QUESTION: Is there any plan to help move packages from module-assistant to dkms in debian/ubuntu? | 18:15 |
| pgraner | doctormo, no there are no plans to do so, dkms is our preferred method for out of tree drivers | 18:16 |
| pgraner | next | 18:16 |
| jono | <GauravButola> QUESTION : There are wirless modems (wireless broadband data cards) and TV tuner cards, which do not get detected by Ubuntu at all. What can I expect in 11.04 in this respect. | 18:16 |
| pgraner | GauravButola, depending on the device there are several reasons why it may or may not be supported in Ubuntu | 18:17 |
| pgraner | the biggest reason is that the firmware is not available or there is not a driver | 18:17 |
| pgraner | if the firmware is available and we don't have it file a bug and we will see what we can do to get it into the distro | 18:18 |
| pgraner | as far as what to expect, there is better support based on bugs and user feedback. | 18:18 |
| pgraner | next | 18:18 |
| jono | <doctormo> QUESTION: Does hard coding usb and pci ids into the kernel driver code make enabeling hardware that would work, but for a new id, more difficult? | 18:18 |
| pgraner | doctormo, It is harder but its the only way we have right now, device tree should fix this problem in the future but its not ready for prime time on X86 | 18:20 |
| pgraner | next | 18:20 |
| jono | <sebsebseb> QUESTION: I don't really know much about USB 3.0, but when is Ubuntu likely to support it? | 18:20 |
| pgraner | sebsebseb, it entered the kernel in 2.6.35 iirc and has been in ubuntu | 18:21 |
| pgraner | sebsebseb, older ubuntu kernels will get support as it bubbles into the stable tree from upstream | 18:22 |
| pgraner | next | 18:22 |
| jono | <doctormo> QUESTION: Are there any automated kernel speed tests happening in order to improve perforance in the kernel? | 18:22 |
| pgraner | doctormo, not currently, there are plans but that is more of a QA question (hint ask marjo on his turn) | 18:23 |
| pgraner | however there are other doing it | 18:23 |
| pgraner | next | 18:23 |
| jono | <sebsebseb> QUESTION: Do you think Ubuntu 11.10 will use BTRFS by default, if so why? | 18:23 |
| jono | that was the last question - any final questions? ask them in #ubuntu-classroom-chat !! | 18:24 |
| pgraner | sebsebseb, at this point we have no idea, that will be determined based on stability at UDS | 18:24 |
| pgraner | next | 18:24 |
| jono | ok, we are all out | 18:24 |
| pgraner | Great thanks everyone! | 18:25 |
| jono | if there are no more questions in the next minute or so, we will wrap up | 18:25 |
| pgraner | Hope it was helpful | 18:25 |
| jono | OK, it's a wrap! | 18:25 |
| jono | thanks everyone, and thanks pgraner for taking the time today :-) | 18:25 |
| pgraner | Thanks I'm out! | 18:25 |
| ClassBot | There are 10 minutes remaining in the current session. | 18:40 |
| ClassBot | There are 5 minutes remaining in the current session. | 18:41 |
| === ChanServ changed the topic of #ubuntu-classroom to: Welcome to the Ubuntu Classroom - https://wiki.ubuntu.com/Classroom || Support in #ubuntu || Upcoming Schedule: http://is.gd/8rtIi || Questions in #ubuntu-classroom-chat || Survey: http://tinyurl.com/UUDSurveyJan11 || | ||
| === michael is now known as Guest1245 | ||
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