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mroconnor
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PostPosted: Fri Jul 18, 2008 3:05 pm    Post subject: Reply with quote

so jealous.....never could get radeonhd/radeon to work......sigh.
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mroconnor
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PostPosted: Fri Jul 18, 2008 5:14 pm    Post subject: Reply with quote

I have kernel panic on booting -zenrt, I havent even begun to research it, but looks to be similar to the issues with -zenmm3.

How do I do a real kernel benchmark? I mean I have all these great versions of the different zen kernels and I watch how quickly they boot and then I test each out by emerging php, compiling two kernels, playing a movie in vlc, have thunderbird open and firefox. If i can do all that without issue and smoothly I say 'good kernel' but I really have no idea which is 'better'. Right now -zenmm2 is my top kernel but once I get tp_smapi working in 2.6.26-rc9-zen1 it might be close.

What does everyone else do?
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rahulthewall
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PostPosted: Fri Jul 18, 2008 8:11 pm    Post subject: Reply with quote

I did not find this in the zen-overlay. I just need to compile this kernel to test some stuff, please tell me where to get it.
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PostPosted: Sat Jul 19, 2008 3:29 am    Post subject: Reply with quote

mroconnor wrote:
so jealous.....never could get radeonhd/radeon to work......sigh.


well idk what your issue with radeon/radeonhd is, radeon should work on everyone's card and radeonhd should work on new cards.....

... with regards to your panic, javashin said that uvesafb doesnt seem to work with realtime so try disabling that and see if your kernel boots
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Last edited by rmh3093 on Sat Jul 19, 2008 3:33 am; edited 1 time in total
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rmh3093
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PostPosted: Sat Jul 19, 2008 3:33 am    Post subject: Reply with quote

rahulthewall3000 wrote:
I did not find this in the zen-overlay. I just need to compile this kernel to test some stuff, please tell me where to get it.


in in layman, or u can fetch in with git your self "git://zen-sources.org/zen/portage-overlay.git"
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PostPosted: Sat Jul 19, 2008 3:49 am    Post subject: Reply with quote

mroconnor wrote:
How do I do a real kernel benchmark?


Most people just compare averages which is meaningless and a waste of time, if you want do shit right you at least need to do a t-test which means finding a task like encoding an mp3 or compressing a file (which is only testing throughput, another pointless benchmark) and recording the time it takes to do that task about 20 times rebooting after each trial, and you need to repeat this for each kernel you want to compare. t-test (and statistics in general) are too much for most people and too much work I take every benchmark with a grain of salt, personally, interactivity is more important to me than thoughput or latency but interactivity is basically impossible to quantify
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PostPosted: Sat Jul 19, 2008 10:39 am    Post subject: Reply with quote

just got a really nasty hardlock during compilation of sed (I today enabled the fstack-protector thingy and BOOM it hardlocked during emerge :roll: )

now everything seems broken :lol:

I hope I don't have to play back the elder stage4-tarball (no more kde4.1 :cry: )

edit:

well, ok - it has 970.000 fixable corruptions :lol:
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PostPosted: Sat Jul 19, 2008 11:51 am    Post subject: Reply with quote

ok, back up again,

@tranquilcool, mroconnor
:

disable the fstack-protector protection & see if that helps

I'll report back if that was the cause for my hardlock ,...

good luck :)
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tranquilcool
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PostPosted: Sat Jul 19, 2008 12:11 pm    Post subject: Reply with quote

kernelOfTruth wrote:
ok, back up again,

@tranquilcool, mroconnor
:

disable the fstack-protector protection & see if that helps

I'll report back if that was the cause for my hardlock ,...

good luck :)


what's the config option?
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kernelOfTruth
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PostPosted: Sat Jul 19, 2008 12:26 pm    Post subject: Reply with quote

tranquilcool wrote:
kernelOfTruth wrote:
ok, back up again,

@tranquilcool, mroconnor
:

disable the fstack-protector protection & see if that helps

I'll report back if that was the cause for my hardlock ,...

good luck :)


what's the config option?


Quote:
cat .config | grep STACK
CONFIG_STACKTRACE_SUPPORT=y
# CONFIG_CC_STACKPROTECTOR is not set
CONFIG_DEBUG_STACKOVERFLOW=y
# CONFIG_DEBUG_STACK_USAGE is not set


... and it was the reason for my hardlock - no hardlocks right now during emerge / compiling :D
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tranquilcool
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PostPosted: Sat Jul 19, 2008 12:32 pm    Post subject: Reply with quote

i don't have that kernel option:


cat .config | grep STACK

CONFIG_STACKTRACE_SUPPORT=y
CONFIG_STACKTRACE=y
# CONFIG_DEBUG_STACKOVERFLOW is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_4KSTACKS is not set
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mroconnor
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PostPosted: Sat Jul 19, 2008 1:18 pm    Post subject: Reply with quote

@rmh3093: io should say that radeonhd works but it does look good w/ xfce. I think I need to completely rework my xorg, but anymore all I like doing is playing w/ the kernel.
Re: benchmarking- I'll stick to my informal benchmarking, I like interactivity too. ;)
Re: panic, I have to check but I think it was a debug optionthat it didn't like.

@KernelofTruth: I'll check that option, I assume you are using -zenmm3.

Thanks guys.
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kernelOfTruth
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PostPosted: Sat Jul 19, 2008 1:41 pm    Post subject: Reply with quote

@mroconnor:
yes I do,

@tranquicool:

hardlocks: confirmed !

after some time of emerging, the system involuntarily locks up and the CAPS, num ... keys flash :evil:

so I guess I'll have to go back to rc8-mm3

gentoo without compiling is like a car without engine :(
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PostPosted: Sat Jul 19, 2008 8:01 pm    Post subject: Reply with quote

anyone of you guys has compiled the kernel with:

Quote:
[*] Debug preemptible kernel │ │
│ │ [*] RT Mutex debugging, deadlock detection │ │
│ │ [*] Spinlock and rw-lock debugging: basic checks │ │
│ │ [*] Mutex debugging: basic checks


Quote:
--- Kernel subsystem tests │ │
│ │ [*] Locking API boot-time self-tests


enabled and looking what kind of error messages occur during boot-up ?

I get tons of
Quote:
BUG: using smp_processor_id()
or similar (can't stop that fast scrolling code, so that's the only thing I noticed) ...

do these kind of tests make sense at all with lockless pagecache & the other patches applied ?
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kernelOfTruth
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PostPosted: Sat Jul 19, 2008 9:40 pm    Post subject: Reply with quote

@tranquilcool, mroconnor:

try this kernel-config

I made some changes to the config & switched from forced/fully preemption to voluntary preemption ... (fstack-protector ist disabled)
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rmh3093
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PostPosted: Sun Jul 20, 2008 2:03 am    Post subject: Reply with quote

kernelOfTruth wrote:
anyone of you guys has compiled the kernel with:

Quote:
[*] Debug preemptible kernel │ │
│ │ [*] RT Mutex debugging, deadlock detection │ │
│ │ [*] Spinlock and rw-lock debugging: basic checks │ │
│ │ [*] Mutex debugging: basic checks


Quote:
--- Kernel subsystem tests │ │
│ │ [*] Locking API boot-time self-tests


enabled and looking what kind of error messages occur during boot-up ?

I get tons of
Quote:
BUG: using smp_processor_id()
or similar (can't stop that fast scrolling code, so that's the only thing I noticed) ...

do these kind of tests make sense at all with lockless pagecache & the other patches applied ?


why they hell would you enable debugging features
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PostPosted: Sun Jul 20, 2008 4:37 am    Post subject: Reply with quote

i think we need a new mm release ;) rc8 has been a thing i want to forgot.
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PostPosted: Sun Jul 20, 2008 6:54 am    Post subject: Reply with quote

kernelOfTruth wrote:
@tranquilcool, mroconnor:

try this kernel-config

I made some changes to the config & switched from forced/fully preemption to voluntary preemption ... (fstack-protector ist disabled)


thanks kernelOfTruth.
this kernel doesn't work for me. yes i have tried the config obviously adapting it to my setup.
now that i have made the switch to oss-devel it just panics starting oss.
i'll wait for an update from the guys.
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kernelOfTruth
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PostPosted: Sun Jul 20, 2008 2:25 pm    Post subject: Reply with quote

cheater1034 wrote:
i think we need a new mm release ;) rc8 has been a thing i want to forgot.


definitely ! :P

tranquilcool wrote:
kernelOfTruth wrote:
@tranquilcool, mroconnor:

try this kernel-config

I made some changes to the config & switched from forced/fully preemption to voluntary preemption ... (fstack-protector ist disabled)


thanks kernelOfTruth.
this kernel doesn't work for me. yes i have tried the config obviously adapting it to my setup.
now that i have made the switch to oss-devel it just panics starting oss.
i'll wait for an update from the guys.


ok, it seemingly hardlocks pretty often on a random basis when emerging stuff,

I was hearing an mp3 when the sound + totem suddenly stopped to react, other stuff was still working, a few seconds later (afaik) num + cups lock were flashing

@tranquilcool:
isn't oss known for not being the most stable driver ? :wink:
it surely is a little more trickier than normal with an mm-based kernel


I'm currently running it with normal swap disabled & compcache + tlsf enabled (== virtual / compressed swap in ram), I'll let you know if that improves it ...
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PostPosted: Sun Jul 20, 2008 5:15 pm    Post subject: Reply with quote

ok, after 3.5 hours and the normal swap disabled it hardlocked again with I/O error & all apps beginning to die,

--> this (seemingly) is the exact same behavior like with zen-sources,

so this has to do with concurrent pagecache + something else not playing fine in mm, I guess

hm, will disable hardirq + softirq & see if that (hopefully) fixes it ... *sigh* :(

2.6.27-rc*-mm will surely be much better :P
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PostPosted: Sun Jul 20, 2008 9:52 pm    Post subject: Reply with quote

kernelOfTruth wrote:
ok, after 3.5 hours and the normal swap disabled it hardlocked again with I/O error & all apps beginning to die,

--> this (seemingly) is the exact same behavior like with zen-sources,

so this has to do with concurrent pagecache + something else not playing fine in mm, I guess

hm, will disable hardirq + softirq & see if that (hopefully) fixes it ... *sigh* :(

2.6.27-rc*-mm will surely be much better :P


cpc is not in -zenmm
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PostPosted: Mon Jul 21, 2008 7:45 am    Post subject: Reply with quote

@rmh3093

can you get reiser4 into zenrt? thanks

has anybody got nvidia-drivers-173.14.09 to compile
with zenrt or rather any patch to get it to compile?

i don't know if the nvidia compilation problem is common to 2.6.26 kernel.
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PostPosted: Mon Jul 21, 2008 10:35 am    Post subject: Reply with quote

tranquilcool wrote:
@rmh3093

can you get reiser4 into zenrt? thanks

has anybody got nvidia-drivers-173.14.09 to compile
with zenrt or rather any patch to get it to compile?

i don't know if the nvidia compilation problem is common to 2.6.26 kernel.


yes, you need a patch for -rt:
http://www.nvnews.net/vbulletin/attachment.php?attachmentid=32225&d=1215457677

It works fine with it.
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PostPosted: Mon Jul 21, 2008 11:00 am    Post subject: Reply with quote

FallenWizard wrote:
tranquilcool wrote:
@rmh3093

can you get reiser4 into zenrt? thanks

has anybody got nvidia-drivers-173.14.09 to compile
with zenrt or rather any patch to get it to compile?

i don't know if the nvidia compilation problem is common to 2.6.26 kernel.


yes, you need a patch for -rt:
http://www.nvnews.net/vbulletin/attachment.php?attachmentid=32225&d=1215457677

It works fine with it.


patch applies clean but it still doesn't compile for me.
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PostPosted: Mon Jul 21, 2008 7:32 pm    Post subject: Reply with quote

Reiser4 for zenrt patch
I would of pushed it, but for some reason i get permission denied.

Anyway, here's a working reiser4 diffed against zenrt, it's the latest r4 from mm, i tested it awhile back on 2.6.25.8-rt7, havent booted zenrt (i don't use RT for anything, it would just slow me down but i'd do testing)

http://omploader.org/vbWV1

just apply with patch -p1 -i
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