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Lovechild
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PostPosted: Tue Mar 11, 2003 9:16 am    Post subject: Reply with quote

Lowspirit wrote:

Note: MPlayer segfaults if you decide to go with nptl.


It does... please inform my MPlayer that it's support to segfault, it works fine - I watched SpongeBob Squarepants all night without a hitch, on a nptl compiled system.

The only problem I'm having is that Evolution really hates nptl or glibc 2.3.2 - I can only read my mail, I can't answer it because opening the composer fails.
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Lowspirit
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PostPosted: Tue Mar 11, 2003 11:27 am    Post subject: Reply with quote

MPlayer and XMMS started to segfault after I had compiled my glibc with NPTL so I had to switch back since those are frequently used. Would be nice to know exactly why they segfaulted though since you run them OK and even though I didn't see any noticable improvement from running NPTL, I'd still prefer to use it after reading techinfo about it.

Compiled a bk4 kernel with the (on paper very interesting) self tuning scheduler patch and running it now, we'll see after some usage if I find any high/low points to it. It'll be compared to bk5 .64 kernel in my mind.
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Lovechild
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PostPosted: Tue Mar 11, 2003 11:50 am    Post subject: Reply with quote

I'm personally more interested in the selftuning scheduler, it sounds like the "right way" to improve the linux kernel overall - to make it selftuneable.
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zypher
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PostPosted: Tue Mar 11, 2003 6:22 pm    Post subject: Reply with quote

@lowspirit:
Where do I find the patches to run a linus-ingo-combo?
Or should I go for the bk6-patch?
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Lowspirit
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PostPosted: Tue Mar 11, 2003 7:22 pm    Post subject: Reply with quote

zypher wrote:
@lowspirit:
Where do I find the patches to run a linus-ingo-combo?
Or should I go for the bk6-patch?


http://www.kerneltrap.org/sup/603/ingo-linus.patch

Or as you say, you can just patch it with bk6 since it have that patched merged into it.
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Evangelion
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PostPosted: Tue Mar 11, 2003 8:28 pm    Post subject: Reply with quote

Lovechild wrote:
I'm personally more interested in the selftuning scheduler, it sounds like the "right way" to improve the linux kernel overall - to make it selftuneable.


Quote:
Greetings,

I took your patch out for a test-drive, and it appears to have starvation
problems with irman's process load (dang thing seems to be HELL on schedulers).

Irman starts a load (defaults to 9 tasks passing data in a pipe ring), and
forks a child which pingpongs one character back and forth to the parent
for 1000000 iterations, measuring response time for each iteration and
computing statistics. With an iteration % 1000 printf() in the evaluation
routine, I see it start off nice and fast, then begins to get starved for
up to 30 seconds. It jerks around for a bit, then slows down to a ~stable
1 sec/iteration after approximately 300000 iterations. The whole test
takes ~2minutes with 2.5.64-virgin. (I'm not patient enough to wait for
the rest of the .5million iterations left on this burn before reporting:)

It also shows a serious throughput loss with make -j30 bzImage on this box
(I think you expect that though from what I read). With stock, it takes
~8m30s... this scheduler adds a full minute.

The window wave test with a make -j5 bzImage running (fits easily in ram)
is pretty ragged.

Ending on a more positive note, vmstat output from the parallel build looks
quite nice.


http://www.uwsg.indiana.edu/hypermail/linux/kernel/0303.1/0683.html
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Lovechild
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PostPosted: Wed Mar 12, 2003 6:05 am    Post subject: Reply with quote

Well, it's mostly the idea that tickles my fancy... I really hate the idea of "magic numbers" and dials... It would be much nicer if the kernel just adjusted itself...
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charlieg
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PostPosted: Wed Mar 12, 2003 11:10 am    Post subject: Reply with quote

Anybody have any idea on how long we can expect to wait for 2.5.65?
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Exci
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PostPosted: Wed Mar 12, 2003 7:24 pm    Post subject: Reply with quote

Normally 1 week after the previous release ..
but it already takes 1,5 weeks :(
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Lovechild
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PostPosted: Wed Mar 12, 2003 7:55 pm    Post subject: Reply with quote

There's a new version out of the selftunable scheduler patch now which should adresse the problems that have been reported.
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nerdbert
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PostPosted: Wed Mar 12, 2003 9:24 pm    Post subject: Reply with quote

wow... this is too fast for me... ingo deserves a virtual beer from me

I guess I wont ever compile 2.4 again - my PIII laptop seems to be faster than my AthlonXP 2200 still running 2.4 (I know it is not - Im just talking about the desktop "experience")...

but I experienced a problem with modules identical to the one described above... does anybody know how to solve this? did anybody else notice any drawbacks?
edit: sorry, just read some other posts - my fault

an interesting side-effect is that my mouse moves way faster under x than before. A slow mouse is especially annoying when using a touchpad
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frenion
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PostPosted: Wed Mar 12, 2003 10:22 pm    Post subject: Reply with quote

I really would like to go 2.5.x, but I have some issues with it I just can live with:

Audigy just works horrible with 2.5.x. The audigy emu10k1 ebuild doesn't work with 2.5.x, so one is forced to use the in-kernel ALSA. Well. The *REAR SPEAKER* volume control for ALSA + Audigy is just horrible b0rken. But it works okay... Another thing is that my Logitech MX700 mouse acts even more strange on 2.5.x than on 2.4.x. It jumps around the screen, doing silly stuff.
If anyone could help with these problems, I would really, really be one very happy penguin. :o)
I really would like to be able to use kernel 2.5.x... I need the desktop latency improvements badly.. :(
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Swishy
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PostPosted: Wed Mar 12, 2003 11:24 pm    Post subject: Reply with quote

I installed the 2.5.64 kernel and the ingo-linus patch the other day and like most of you here have also noticed a HUGE increase in stability and performance (I was previously running wolk 4 ) for ex. in ut2003 I used to get a frame rate of around 20-50 fps on any level ...now I get a rock solid 55-60fps , on the desktop I can have stuff compiling in the background and still drag konqueror windows around to my hearts content while file browsing with preview on and all still seems remarkably smooth , the only difference to the system is the kernel , everything else is identical to the previous install ....

Cheers
Dale.
BTW using nvidia 4191, oss kernel driver for cmi8738 genuis 5.1 card.
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daen1543
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PostPosted: Thu Mar 13, 2003 6:09 am    Post subject: Help a clueless newbie! Reply with quote

Following the advice of all the enthusiastic posts in this thread, I risked to install the newest kernel (2.5.64 with ingo-linus.patch). However, I can't get the sound to work. Do I need to compile the emu10k1 alsa driver into the kernel? Doing
Code:
env ALSA_CARDS='emu10k1' emerge alsa-driver
per directions in the Gentoo ALSA Guide gives me compile errors :(
Code:
/usr/src/linux/include/asm/irq.h:16:25: irq_vectors.h: no such file or directory


Swishy, when you drag the konqueror window across the desktop, is it still jerky? I'm trying to figure out if this is what most people experience, i.e. not smooth like in Windows...

Other than that, I don't notice any problems with this kernel - it even noticed my full 512Mb of RAM! (See https://forums.gentoo.org/viewtopic.php?t=38858&highlight=)
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csnyder
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PostPosted: Thu Mar 13, 2003 6:28 am    Post subject: Reply with quote

nerdbert wrote:
an interesting side-effect is that my mouse moves way faster under x than before. A slow mouse is especially annoying when using a touchpad


I noticed the same thing. I have a notebook with the eraser-type pointing stick, and it was a pain to use in X. I tried changing the mouse settings, and it didn't affect anything. My USB mouse, however, was affected by the settings change. After installing 2.5, however, my trackpoint moves across the screen a lot faster, and is more bearable. Also, the 800 mhz Crusoe is a lot more bearble. I'm never installing 2.4 on my notebook again. :-)
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Evangelion
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PostPosted: Thu Mar 13, 2003 8:27 am    Post subject: Reply with quote

Is it just me, or is 2.6/3.0 becoming a REALLY good kernel :D?
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zypher
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PostPosted: Thu Mar 13, 2003 10:30 am    Post subject: Reply with quote

As soon as my xircom pcmcia-card works I agree.
Or maybe it's just pcmcia-cs (won't compile with 2.5.64-bk6/7).

And another thing: mach64-dri won't compile because of the kernel sources but that's ok and will follow shortly after 2.6.0 I think.
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Lovechild
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PostPosted: Thu Mar 13, 2003 11:04 am    Post subject: Reply with quote

Evangelion wrote:
Is it just me, or is 2.6/3.0 becoming a REALLY good kernel :D?


It fixes most of the things that really sucks about 2.4 - just read about BIO or the scheduler and you will notice incredible improvements.

This small tweak is nothing compared to the underlying changes in 2.6 - I mean they basically ripped out the guts on of 2.4 and replaced it with stuff that actually works, and is easier to understand.
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PostPosted: Thu Mar 13, 2003 11:13 am    Post subject: Reply with quote

Hello all,

I would like to try out this kernel on my notebook. Can someone give me a hint what to emerge and how to patch the kernel with bk? patch (Where do I get this patch from?). Do I have to emerge develpment-sources or mm-sources? Talking about pcmcia, Can I use pcmcia-cs with this kernel or do I have to compile the kernel pcmcia stuff?

Thanks very much for your replies,

regards,
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Lovechild
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PostPosted: Thu Mar 13, 2003 11:30 am    Post subject: Reply with quote

go to www.kernel.org and get 2.5.64-bk6 (on front page)

then:

emerge development-sources
cd /usr/src/linux-2.5.64
mv /where/ever/you/put/patch-2.5.64-bk6.bz2 ../
bzcat ../patch-2.5.64-bk6.bz2 | patch -p1
make menuconfig
make bzImage modules modules_install

mount /boot
cp arch/i386/boot/bzImage /boot/dev-test
vi /boot/grub/grub.conf
(edit grub to match new kernel)

reboot
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silverter
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PostPosted: Thu Mar 13, 2003 11:42 am    Post subject: Reply with quote

Lovechild

Thanks alot for the info, that'll keep me busy for a moment. I guess I still nee d to emerge modules-init-tools, right? correct me if I'm wrong.

Anything about the pcmcia stuff, you notebook owner?

best regards,
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aardvark
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PostPosted: Thu Mar 13, 2003 11:49 am    Post subject: Reply with quote

Looks like you guys are slashdotting www.kernel.org!

Well it's their own fault; they shouldn't bring out such great patches ;)

I am eager to try it out... waiting for www.kernel.org to appear in my konqscreen...
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zypher
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PostPosted: Thu Mar 13, 2003 11:57 am    Post subject: Reply with quote

I can't get pcmcia-cs to compile with either -bk6 or -bk7.
Code:

In file included from scsi_info.c:42:
/usr/src/linux/include/scsi/scsi.h:204: parse error before "u8"
/usr/src/linux/include/scsi/scsi.h:204: warning: no semicolon at end of struct or union
/usr/src/linux/include/scsi/scsi.h:205: warning: type defaults to `int' in declaration of `ScsiLun'
/usr/src/linux/include/scsi/scsi.h:205: warning: data definition has no type or storage class
make[1]: *** [scsi_info] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [all] Error 2


That's what I get.
The pcmcia-cs I compiled under 2.4.20 doesn't work.
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CoronaLover
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PostPosted: Thu Mar 13, 2003 12:14 pm    Post subject: Reply with quote

Andrew Morton's latest mm patchset:
http://lkml.org/archive/2003/3/13/31/index.html

prelink? huh? :D
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CoronaLover
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PostPosted: Thu Mar 13, 2003 12:20 pm    Post subject: Reply with quote

zypher wrote:
I can't get pcmcia-cs to compile with either -bk6 or -bk7.
Code:

In file included from scsi_info.c:42:
/usr/src/linux/include/scsi/scsi.h:204: parse error before "u8"
/usr/src/linux/include/scsi/scsi.h:204: warning: no semicolon at end of struct or union
/usr/src/linux/include/scsi/scsi.h:205: warning: type defaults to `int' in declaration of `ScsiLun'
/usr/src/linux/include/scsi/scsi.h:205: warning: data definition has no type or storage class
make[1]: *** [scsi_info] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [all] Error 2


That's what I get.
The pcmcia-cs I compiled under 2.4.20 doesn't work.


Try changing the "u8" in scsi.h to "u_char".
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