| freinhard | hi! | 01:10 |
|---|---|---|
| freinhard | did the most recent kernel published for karmic contain changes in the dvb susbsystem? just reinstalled some external, not yet in the main tree, driver for my dvb-s device and /dev/dvb/ is gone but /dev/dvb0.* is there instead | 01:11 |
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| mohanohi | hi.. | 12:41 |
| mohanohi | is it possible to make a quad core processor work as combined single core ?/ | 12:42 |
| mohanohi | my software runs only using single core.. it is not built for multi core.. | 12:42 |
| amitk | it shouldn't make a difference, the app should just work | 12:51 |
| mohanohi | speed.. | 12:51 |
| mohanohi | my each core is off 900mghz | 12:51 |
| mohanohi | it only uses 900 :( | 12:52 |
| amitk | you'd have to change your app to use threading for that | 12:52 |
| mohanohi | i am using aqsis, an open source renderman renderer. | 12:53 |
| mohanohi | its the only one .. :( | 12:53 |
| mohanohi | you think it is not possible at kernel level to make the entire operating system think quad core as one processor? | 12:54 |
| mohanohi | i think, its crazy idea.. | 12:54 |
| alex_joni | mohanohi: no you can't | 12:55 |
| mohanohi | alex_joni: oh ok.. thanx for the info :) | 12:56 |
| alex_joni | if there's only one process, that runs on one processor | 12:56 |
| alex_joni | if you have 4 processors (cores), then you need a multi-threaded app to take advantage of that | 12:56 |
| mohanohi | ok.. | 12:57 |
| mohanohi | i think i have to submit the job 4 times.. | 12:57 |
| amitk | submitting the job 4 times will start 4 _different_ processes that don't share the data | 13:04 |
| amitk | mohanohi: to share data, the app needs to be multi-threaded | 13:05 |
| mohanohi | amitk: its not like that.. | 13:05 |
| mohanohi | rendering a batch of 10 frames x 4 | 13:06 |
| mohanohi | yeah shading of data is not done.. but it utilizes my all cores.. | 13:06 |
| mohanohi | hope the developer makes it multi-threaded.. | 13:06 |
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| tom3p | hello, i read that many usb devices are flawed and that kernel 2.6.8 has fixed this (worked around it). | 16:24 |
| tom3p | Where can I find more information. | 16:24 |
| tom3p | I hope to patch 2.6.4-16-rtai to allow same fix. | 16:24 |
| ivoks | there are rumors that 2.6.32 has ext4 bug/issue that impacts postgresql and apache performance | 17:56 |
| ivoks | this is the commit: | 17:56 |
| ivoks | http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5f3481e9a80c240f169b36ea886e2325b9aeb745 | 17:56 |
| ivoks | (haven't tested it yet) | 17:57 |
| mcgrof | anyone aware of upstart changes which would prevent booting older kernels? | 18:55 |
| * mcgrof pokes at code | 18:55 | |
| johanbr | mcgrof, not sure about upstart, but newer udev won't work with older kernels | 19:04 |
| mcgrof | johanbr: oh I see thanks | 19:07 |
| mcgrof | yeah the upstart README indicatest kernels >= Linux 2.6.24 are supported | 19:07 |
| mcgrof | johanbr: what about udev is screwy with older kernels | 19:07 |
| johanbr | I don't remember the details, unfortunately... | 19:08 |
| mcgrof | johanbr: ok thanks though I'll ask Mr google | 19:19 |
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| BUGabundo | evening | 22:10 |
| BUGabundo | $ pastebinit /var/log/kern.log http://paste.ubuntu.com/357273/ | 22:10 |
| BUGabundo | Jan 15 21:58:02 BluBUG kernel: [ 9.590629] Call Trace: | 22:11 |
| BUGabundo | Jan 15 21:58:02 BluBUG kernel: [ 9.590631] <IRQ> [<ffffffff810c4cfb>] __report_bad_irq+0x2b/0xa0 | 22:11 |
| BUGabundo | Jan 15 21:58:02 BluBUG kernel: [ 9.590641] [<ffffffff810c4efc>] note_interrupt+0x18c/0x1d0 | 22:11 |
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