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cyfred
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PostPosted: Thu May 29, 2003 10:41 am    Post subject: Reply with quote

Exner all of my systems use GCC 3.3 and my kernel boots fine.
Can you post a error message as such or does the kernel just stop loading?
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Lovechild
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PostPosted: Thu May 29, 2003 11:18 am    Post subject: Reply with quote

http://www.ussg.iu.edu/hypermail/linux/kernel/0305.3/1285.html

mm2 is out, have at it.
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Exner
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PostPosted: Thu May 29, 2003 11:36 am    Post subject: Reply with quote

cyfred wrote:
Exner all of my systems use GCC 3.3 and my kernel boots fine.
Can you post a error message as such or does the kernel just stop loading?


Ahh good.

The first attempt with -O3 and aggressive CFLAGS rebooted instantly on kernel load from disk.

The second attempt with default CFLAGs died just after automounting devfs, apparently in ext3_get_inode_loc. I have digital camera screenshots of the details.

I will next switch to 2.5.70-mm2 before any more attempts.
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jimlynch11
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PostPosted: Thu May 29, 2003 12:01 pm    Post subject: Reply with quote

rather than me rsync'ing 10 times today waiting for mm2 to be in portage, would someone post here when they see an ebuild has been submitted? dont wanna bog down the servers now do i :wink:
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Lovechild
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PostPosted: Thu May 29, 2003 12:12 pm    Post subject: Reply with quote

jimlynch11 wrote:
rather than me rsync'ing 10 times today waiting for mm2 to be in portage, would someone post here when they see an ebuild has been submitted? dont wanna bog down the servers now do i :wink:


just copy it over like the rest of us if it isn't in portage -
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darktux
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PostPosted: Thu May 29, 2003 1:36 pm    Post subject: Reply with quote

But, it is already in portage 8)
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Lovechild
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PostPosted: Thu May 29, 2003 1:39 pm    Post subject: Reply with quote

darktux wrote:
But, it is already in portage 8)


The devs tend to yell at you for coping over ebuilds and the mirror maintains will kill you if you sync to often -- I will take my chances with the first option please.
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nephros
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PostPosted: Thu May 29, 2003 2:27 pm    Post subject: Reply with quote

Lovechild wrote:

The devs tend to yell at you for coping over ebuilds and the mirror maintains will kill you if you sync to often.


What's so bad about copying and version-bumping ebuilds? Especially the kernel ones, which are pretty straightforward and do all the same?
Of course, one probably shouldn't file a bug report for a self-made ebuild...
(OTOH, it's not too complicated to even patch your tree manually now is it.)
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fca
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PostPosted: Thu May 29, 2003 2:34 pm    Post subject: Reply with quote

OK, I've managed to compile 2.5.70-mm1, with gcc 3.3. It works fine, except I've seen that my harddrive performance is down?

Code:
root@localhost fca # hdparm -t -T /dev/hda

/dev/hda:
 Timing buffer-cache reads:   128 MB in  0.40 seconds =322.47 MB/sec
 Timing buffered disk reads:  64 MB in  1.40 seconds = 45.85 MB/sec

While 2.4.21_rc1-gss gives me a buffer-cache read of 480 something. The buffered disk reads are the same. I know it isn't the best of benchmarks, but it is quite a big difference.
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Lovechild
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PostPosted: Thu May 29, 2003 3:47 pm    Post subject: Reply with quote

I found a way to remove even more of that nasty laggy sound behavior

edit kernel/sched.c and set max_timeslice to less than or equal to 40 instead of 200 as it is now. that took care of most of the jitter for me. It has been suggested that even as low as 10 might be good for desktop usage.
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Exner
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PostPosted: Thu May 29, 2003 4:40 pm    Post subject: Reply with quote

Exner wrote:
cyfred wrote:
Exner all of my systems use GCC 3.3 and my kernel boots fine.
Can you post a error message as such or does the kernel just stop loading?

The second attempt with default CFLAGs died just after automounting devfs, apparently in ext3_get_inode_loc. I have digital camera screenshots of the details.

I will next switch to 2.5.70-mm2 before any more attempts.

I've now tested with 2.5.70-mm2 and I still have the same problem. Comparing to the dmesg of my current 2.5.69-mm2, 2.5.70-mm2 starts to have a problem in the raid0 driver.

2.5.69-mm2 shows:
Code:
md: Autodetecting RAID arrays.
md: autorun ...
md: considering hdg6 ...
md:  adding hdg6 ...
md:  adding hde7 ...
md: created md0
md: bind<hde7>
md: bind<hdg6>
md: running: <hdg6><hde7>
md0: setting max_sectors to 32, segment boundary to 8191
raid0: looking at hdg6
raid0:   comparing hdg6(41945600) with hdg6(41945600)
raid0:   END
raid0:   ==> UNIQUE
raid0: 1 zones
raid0: looking at hde7
raid0:   comparing hde7(41945600) with hdg6(41945600)
raid0:   EQUAL
raid0: FINAL 1 zones
raid0: done.
raid0 : md_size is 83891200 blocks.
raid0 : conf->smallest->size is 83891200 blocks.
raid0 : nb_zone is 1.
raid0 : Allocating 8 bytes for hash.
md: ... autorun DONE.
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
Mounted devfs on /dev
Freeing unused kernel memory: 160k freed

But 2.5.70-mm2 says
Code:
raid0: FINAL 1 zones
raid0: multiple devices for 1 - aborting!
Then md unallocates md0 and the kernel Oopses. JPG Screenshots of the last few screens are in http://www.users.on.net/sutera/2.5.70-mm2-problem1.tar.bz2
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Exner
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PostPosted: Thu May 29, 2003 4:51 pm    Post subject: Reply with quote

Lovechild wrote:
I found a way to remove even more of that nasty laggy sound behavior

edit kernel/sched.c and set max_timeslice to less than or equal to 40 instead of 200 as it is now. that took care of most of the jitter for me. It has been suggested that even as low as 10 might be good for desktop usage.


This is a quick fix and shouldn't be done without Really knowing what you are doing. I think the root cause of the problem is being attacked by kernel preemption, the low latency patch, and the AS and CFQ IO schedulers.
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idl
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PostPosted: Thu May 29, 2003 5:25 pm    Post subject: Reply with quote

Lovechild wrote:
I found a way to remove even more of that nasty laggy sound behavior

edit kernel/sched.c and set max_timeslice to less than or equal to 40 instead of 200 as it is now. that took care of most of the jitter for me. It has been suggested that even as low as 10 might be good for desktop usage.


I'm up for more crazyness, i've set it to 10.. kernel is compiling as I speek.
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Lovechild
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PostPosted: Thu May 29, 2003 5:34 pm    Post subject: Reply with quote

It seems the the problem might be the interactive changes ingo and linus made - they seem to be slow at adapting to changing conditions.
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idl
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PostPosted: Thu May 29, 2003 5:43 pm    Post subject: Reply with quote

port001 wrote:
Lovechild wrote:
I found a way to remove even more of that nasty laggy sound behavior

edit kernel/sched.c and set max_timeslice to less than or equal to 40 instead of 200 as it is now. that took care of most of the jitter for me. It has been suggested that even as low as 10 might be good for desktop usage.


I'm up for more crazyness, i've set it to 10.. kernel is compiling as I speek.


Thins seem generaly a little snappier I think... nothing substantial.
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sebgarden
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PostPosted: Thu May 29, 2003 11:38 pm    Post subject: Reply with quote

I finally get rid of these annoying ext3 problems with mm-sources-2.70-r2 (didn't try 2.70-r1). With 2.69-mm9, I couldn't even wrote on ext3 (my boot partition) without causing a kernel hang-on. Very disappointing ! Fortunately, this seems to be fixed in this version. No problem so far.

Sébastien.
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bssteph
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PostPosted: Fri May 30, 2003 1:46 am    Post subject: Reply with quote

Regarding everyone's audio talk, I have a similar issue.

Nothing makes ALSA skip a millisecond under normal conditions, -except- when a new song starts playing. For the first couple seconds of a song, if I do something substantial in galeon or nautilus, like going back or forward (but not loading a new page, perhaps due to slow modem speed), the sound pauses a bit. This is a global issue, not just in XMMS. I can play an ogg in ogg123 and i'll get the same skip for the same amount of time. Again, this is only the first couple seconds.

Due to nature of what it is i'm doing (very fast reads of the browser cache), do you think this is a story of the AS scheduler gone wrong? (I think I had the same results with really short timeslices, too) I don't remember when this first turned up but it's been a while... maybe since I started using mm-sources.
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Negated Void
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PostPosted: Fri May 30, 2003 2:10 am    Post subject: Reply with quote

Alright: Here are my issues with my newly compiled 70mm2 kernel.
1) Wheres supermount?
2) When i ctrl-alt-f1 from kde, it gives me a yellow blocky screen with a white bar thgouh it and freezes the computer
3) Alsa dosn't have a PCM channel, or support 'unmute' on my via82xx.
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handsomepete
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PostPosted: Fri May 30, 2003 2:22 am    Post subject: Reply with quote

Negated Void wrote:
Alright: Here are my issues with my newly compiled 70mm2 kernel.
1) Wheres supermount?


Not really a standard part of the kernel (or the mm sources). You can yank the patch from gentoo sources and see if you can get it to work. Hell, I might try it too.

Quote:
2) When i ctrl-alt-f1 from kde, it gives me a yellow blocky screen with a white bar thgouh it and freezes the computer


Tempted to try, but then I couldn't finish this message.

Quote:
3) Alsa dosn't have a PCM channel, or support 'unmute' on my via82xx.


Odd. I have 2.5.70-mm1 running with a via82xx driver and it works fine (other than sounding semi-crappy). Are you using alsamixer, doing it from the command line or something else? I might try and up it to mm2 just to see if the problem appears, but I didn't see anything. :roll:
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Negated Void
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PostPosted: Fri May 30, 2003 2:27 am    Post subject: Reply with quote

wow.. just tried alsamixer - much easier than amixer :)

it appears i'm just using 'dummy' how do i get the thing to load my card? :)
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handsomepete
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PostPosted: Fri May 30, 2003 3:18 am    Post subject: Reply with quote

Negated Void wrote:
wow.. just tried alsamixer - much easier than amixer :)

it appears i'm just using 'dummy' how do i get the thing to load my card? :)


All I've been doing is compiling in my card and leaving the defaults and it's worked fine. You can check if the Dummy (/dev/null) soundcard is enabled in your kernel (under ALSA (sound) --> Generic devices). Other than that, I would think it should just work.
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stefanwa
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PostPosted: Fri May 30, 2003 7:46 am    Post subject: Reply with quote

No real problems so far, except that damn ALSA again...

alsasound script loads the driver but doesn't create the /dev entries. Manual loading of the modules does, but I have to set the mixer settings after every reboot.
Any idea to get alsasound create the /dev/dsp entry?

Edit: alsasound script worked fine in 2.5.69...
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Lovechild
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PostPosted: Fri May 30, 2003 8:35 am    Post subject: Reply with quote

bssteph wrote:
Regarding everyone's audio talk, I have a similar issue.

Nothing makes ALSA skip a millisecond under normal conditions, -except- when a new song starts playing. For the first couple seconds of a song, if I do something substantial in galeon or nautilus, like going back or forward (but not loading a new page, perhaps due to slow modem speed), the sound pauses a bit. This is a global issue, not just in XMMS. I can play an ogg in ogg123 and i'll get the same skip for the same amount of time. Again, this is only the first couple seconds.

Due to nature of what it is i'm doing (very fast reads of the browser cache), do you think this is a story of the AS scheduler gone wrong? (I think I had the same results with really short timeslices, too) I don't remember when this first turned up but it's been a while... maybe since I started using mm-sources.


Same thing happens with deadline.
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Negated Void
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PostPosted: Fri May 30, 2003 9:37 am    Post subject: Reply with quote

Alright :) i've got sound working (pesky dummy driver mainly)

Anyways, now my only real issue is the console thing i mentioned. When i go into X, i *can't* return to a real console - doing so just freezes the box with some graphic wierdness that just sits there. Even if i do a restart computer in kde, it goes to the console and dies. :(

any ideas?

thanks!
-Matt
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Lovechild
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PostPosted: Fri May 30, 2003 10:28 am    Post subject: Reply with quote

I noticed that when I click a link in epiphany, the cpu usage goes to 100% in a short spike and that causes my sound to skip. There must be some kind of unfairness in the system.

2.5.70-mm2 running deadline.
soundblaster Live 5.1 (emu10k1) running hard compiled ALSA in kernel.
1600+ Athlon-XP
GeForce TI-4280 - running latest driver set
Gnome 2.3.2

I'm pretty certain that the skips are casued by the interactive changes being slow at adapting to changing conditions. Thus it skips like crazy when you wiggle a window around, but after a while it settles down. Kinda like it learns to cope, sadly it's WAY to slow.
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