| View previous topic :: View next topic |
| Author |
Message |
asturm
Developer
Joined: 05 Apr 2007
Posts: 9334
|
 Posted: Thu Mar 31, 2011 6:00 pm Post subject: |
 |
|
| For me, 2.6.38 currently mostly impresses with silence. Even 2.6.38.2 didn't fix sound and there are no fixes currently in stable-queue for 2.6.38, so I'm trying to revert the sound tree back to 2.6.37... |
|
| Back to top |
|
 |
VinzC
Watchman
Joined: 17 Apr 2004
Posts: 5098
Location: Dark side of the mood
|
| Posted: Fri Apr 01, 2011 11:39 am Post subject: |
|
|
| genstorm wrote: | | For me, 2.6.38 currently mostly impresses with silence. Even 2.6.38.2 didn't fix sound and there are no fixes currently in stable-queue for 2.6.38, so I'm trying to revert the sound tree back to 2.6.37... |
So what is your sound chipset?
_________________
Gentoo addict: tomorrow I quit, I promise!... Just one more emerge...
1739! |
|
| Back to top |
|
|
dennisn
Tux's lil' helper
Joined: 01 Aug 2004
Posts: 119
Location: Montreal, Canada
|
| Posted: Fri Apr 01, 2011 6:56 pm Post subject: |
|
|
| I just tried "make oldconfig"ing from 2.6.37, to 2.6.38.2, as I've done countless times before, except this time something is seriously wrong -- the second grub loads the new kernel, there is an endless stream of backtrace-type debug messages that flood my screen -- I have no way of reading what's going on. What the heck happened?!? |
|
| Back to top |
|
|
VinzC
Watchman
Joined: 17 Apr 2004
Posts: 5098
Location: Dark side of the mood
|
| Posted: Sat Apr 02, 2011 11:20 pm Post subject: |
|
|
| dennisn wrote: | | I just tried "make oldconfig"ing from 2.6.37, to 2.6.38.2, as I've done countless times before, except this time something is seriously wrong -- the second grub loads the new kernel, there is an endless stream of backtrace-type debug messages that flood my screen -- I have no way of reading what's going on. What the heck happened?!? |
Weird. That's how I usually configure/install new kernels too...
_________________
Gentoo addict: tomorrow I quit, I promise!... Just one more emerge...
1739! |
|
| Back to top |
|
|
jbouzan
Tux's lil' helper
Joined: 23 Nov 2007
Posts: 138
|
| Posted: Sat Apr 02, 2011 11:22 pm Post subject: |
|
|
| VinzC wrote: | | dennisn wrote: | | I just tried "make oldconfig"ing from 2.6.37, to 2.6.38.2, as I've done countless times before, except this time something is seriously wrong -- the second grub loads the new kernel, there is an endless stream of backtrace-type debug messages that flood my screen -- I have no way of reading what's going on. What the heck happened?!? |
Weird. That's how I usually configure/install new kernels too... |
I did that and it works fine. Bad compile perhaps? I once had a kernel that didn't work, and with no changes to its .config it worked after a recompile. File corruption or something. Or perhaps support for some hardware was dropped, which your computer needed. |
|
| Back to top |
|
|
wuzzerd
Guru
Joined: 05 Jan 2005
Posts: 467
Location: New Mexico
|
| Posted: Sun Apr 03, 2011 12:02 am Post subject: |
|
|
| In a new install using the exact same 2.6.38.2 there was no sound although it worked in the old borked install. The sound card(s) , mixers etc. all showed up in /dev. Yesterday it started working after an emerge -uDN world. Go figure. I did switch from the default profile to desktop. |
|
| Back to top |
|
|
VinzC
Watchman
Joined: 17 Apr 2004
Posts: 5098
Location: Dark side of the mood
|
| Posted: Mon Apr 04, 2011 7:16 am Post subject: |
|
|
The only serious glitch I'm experiencing so far is a kernel Oops in TTM. I have noted down the message partly but it always occurs while the screensaver is active. It looks like a threading issue. Will post what I have noted down later in this thread. Since I've installed 2.6.38-gentoo-r1 I get this panic message when the screensaver is active. Until then the panic message only occurred when unlocking the screen (or cancelling the saver).
_________________
Gentoo addict: tomorrow I quit, I promise!... Just one more emerge...
1739! |
|
| Back to top |
|
|
dennisn
Tux's lil' helper
Joined: 01 Aug 2004
Posts: 119
Location: Montreal, Canada
|
| Posted: Tue Apr 05, 2011 4:49 pm Post subject: |
|
|
| 2.6.38.2 also broke my resuming from hibernation, which was working just fine in 2.6.36. On my x86_64 Acer Ferrari laptop, I get a "general protection fault" and kernel panic (in swapper / swsusp_arch_resume) whenever I try resuming. No good. |
|
| Back to top |
|
|
PaulBredbury
Watchman
Joined: 14 Jul 2005
Posts: 7310
|
| Posted: Tue Apr 05, 2011 7:14 pm Post subject: |
|
|
| dennisn wrote: | | broke my resuming from hibernation |
Known upstream apparently. |
|
| Back to top |
|
|
Yamakuzure
Advocate
Joined: 21 Jun 2006
Posts: 2305
Location: Adendorf, Germany
|
| Posted: Wed Apr 06, 2011 8:26 am Post subject: |
|
|
| DestroyFX wrote: | Here from the timed kernel compilation test I made, with my X6 CPU:
(... snip ...)
The optimal compilation speed was with -jCore. The performance go down with -jCore+1 and more.
I remember that with the 2.6.36-, -jCore+1 was better except with BFS who required -jCore (and was more fast than without BFS with -jCore+1). |
As this is something seldom used, I tried with emerging geany, nano, mlview, kile and hexedit with different MAKEOPTS:- With MAKEOPTS="-j4" (I leave the list in once for reference)
| Code: | # time emerge --oneshot geany nano mlview kile hexedit
>>> Emerging (1 of 5) app-editors/hexedit-1.2.12
>>> Emerging (2 of 5) dev-util/geany-0.20
>>> Emerging (3 of 5) app-editors/nano-2.2.5
>>> Installing (1 of 5) app-editors/hexedit-1.2.12
>>> Emerging (4 of 5) app-editors/mlview-0.9.0
>>> Emerging (5 of 5) app-editors/kile-2.1_beta5
>>> Installing (3 of 5) app-editors/nano-2.2.5
>>> Installing (2 of 5) dev-util/geany-0.20
>>> Installing (5 of 5) app-editors/kile-2.1_beta5
>>> Installing (4 of 5) app-editors/mlview-0.9.0
>>> Jobs: 5 of 5 complete Load avg: 5.73, 4.35, 3.05
real 3m59.929s
user 8m1.822s
sys 1m5.482s |
With MAKEOPTS="-j7" | Code: | real 2m10.122s
user 2m23.061s
sys 0m36.148s |
With MAKEOPTS="-j11" | Code: | real 1m37.223s
user 2m25.297s
sys 0m34.484s |
With MAKEOPTS="-j15" | Code: | real 1m36.465s
user 2m24.854s
sys 0m34.618s |
So for emerging the gain in speed stalls, but doesn't get worse with more parallel jobs.
I am testing kernel compilation next, but I reckon the results will be the same as yours.
=== Edit ===
And here are the tests with the kernel:
| Code: | # make clean && time make -j 4
real 4m18.876s
user 13m24.801s
sys 1m9.835s |
| Code: | # make clean && time make -j 7
real 4m35.801s
user 14m7.941s
sys 1m11.109s |
| Code: | # make clean && time make -j 11
real 4m16.216s
user 14m7.978s
sys 1m9.202s |
| Code: | # make clean && time make -j 15
real 4m23.011s
user 14m11.338s
sys 1m9.929s |
This certainly is weird. While using -j7 performs worse than -j4 (like suggested by your tests), -j15 performs better than -j7 and -j11 performs better than -j4. It's not much, but it is strange... (Or not so strange at all if I understood more of the internal mechanics  )
_________________
Edited 220,176 times by Yamakuzure |
|
| Back to top |
|
|
VinzC
Watchman
Joined: 17 Apr 2004
Posts: 5098
Location: Dark side of the mood
|
| Posted: Wed Apr 06, 2011 11:40 am Post subject: |
|
|
| Yamakuzure wrote: | | This certainly is weird. While using -j7 performs worse than -j4 (like suggested by your tests), -j15 performs better than -j7 and -j11 performs better than -j4. It's not much, but it is strange... (Or not so strange at all if I understood more of the internal mechanics ) |
Isn't to me. "Performs" is not the appropriate term. The patch doesn't improve compile times, it just improves responsiveness, which is totally different. It means, for instance, at equal load, groups of interactive processes in the same session will have better chances to catch a keyboard/mouse events on time and actually *do* the requested operation in a timely fashion. But globally I expect compile times to be just slightly bigger than before.
It's only when the amount of I/O grows such as there's a latency due to excess of I/O operations. So compile times aren't a good measure of the patch efficiency. Don't expect compile times to vary significantly then.
_________________
Gentoo addict: tomorrow I quit, I promise!... Just one more emerge...
1739! |
|
| Back to top |
|
|
Yamakuzure
Advocate
Joined: 21 Jun 2006
Posts: 2305
Location: Adendorf, Germany
|
| Posted: Thu Apr 07, 2011 7:36 am Post subject: |
|
|
Well, yes, during all these time tests my laptop was perfectly responsive all the time. I just did the tests because someone stated that it would be stupid to use a different value for the -j option than the number of logical CPUs. That has been proven wrong, now.
_________________
Edited 220,176 times by Yamakuzure |
|
| Back to top |
|
|
cach0rr0
Bodhisattva
Joined: 13 Nov 2008
Posts: 4123
Location: Houston, Republic of Texas
|
| Posted: Thu Apr 07, 2011 8:48 am Post subject: |
|
|
just to be a pest and BFS fanboy
test during which my desktop (KDE-4.6.2 with compositing enabled, bluray rip playing, and music playing just for grins) responds as though nothing else is going on
quad core phenom
| Code: |
#make clean && time make -j4
real 2m53.167s
user 8m58.095s
sys 0m43.128s
ricker linux # ls -alh arch/x86/boot/bzImage
-rw-r--r-- 1 root root 5.9M Apr 7 03:17 arch/x86/boot/bzImage #roughly half of this is embedded initramfs
|
_________________
Lost configuring your system?
dump lspci -n here | see Pappy's guide | Link Stash |
|
| Back to top |
|
|
Anon-E-moose
Watchman
Joined: 23 May 2008
Posts: 6219
Location: Dallas area
|
| Posted: Thu Apr 07, 2011 11:51 am Post subject: |
|
|
| Yamakuzure wrote: | | Well, yes, during all these time tests my laptop was perfectly responsive all the time. I just did the tests because someone stated that it would be stupid to use a different value for the -j option than the number of logical CPUs. That has been proven wrong, now. |
The only thing you've proven is that in running a few tests that things worked well on your system 
_________________
UM780, 6.12 zen kernel, gcc 13, openrc, wayland
Last edited by Anon-E-moose on Thu Apr 07, 2011 12:29 pm; edited 1 time in total |
|
| Back to top |
|
|
Anon-E-moose
Watchman
Joined: 23 May 2008
Posts: 6219
Location: Dallas area
|
| Posted: Thu Apr 07, 2011 11:58 am Post subject: |
|
|
I've been running BFS for the last several kernel versions going back to 2.6.32 or thereabouts and I've had consistently good performance.
I'm glad that they are finally addressing the problems with performance for those not running BFS.
So once again, for those who don't want to run BFS then run whatever you want.
And for those who want to run BFS it's there.
_________________
UM780, 6.12 zen kernel, gcc 13, openrc, wayland |
|
| Back to top |
|
|
VanFanel
Apprentice
Joined: 19 Feb 2007
Posts: 161
|
| Posted: Fri Apr 08, 2011 11:57 am Post subject: |
|
|
I've been using BFS since 2.6.32: thanks for the ck-sources package, it's what makes my system so great! 
But.. would you recommend automatic task grouping over BFS for emulation?
I'm trying to build a near-zero latency system for both audio & input in emulators and I don't know if BFS is the best option for it.
regards |
|
| Back to top |
|
|
Anon-E-moose
Watchman
Joined: 23 May 2008
Posts: 6219
Location: Dallas area
|
| Posted: Fri Apr 08, 2011 12:09 pm Post subject: |
|
|
| VanFanel wrote: | I've been using BFS since 2.6.32: thanks for the ck-sources package, it's what makes my system so great!
But.. would you recommend automatic task grouping over BFS for emulation?
I'm trying to build a near-zero latency system for both audio & input in emulators and I don't know if BFS is the best option for it.
regards |
The only way to know for sure on your system is to switch to the task grouping and rebuild the kernel.
You can have both and switch back and forth to see which gives you better performance on your system.
_________________
UM780, 6.12 zen kernel, gcc 13, openrc, wayland |
|
| Back to top |
|
|
Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
|
| Posted: Fri Apr 08, 2011 1:17 pm Post subject: |
|
|
| Using schedtool will probably help a bit there too. |
|
| Back to top |
|
|
VanFanel
Apprentice
Joined: 19 Feb 2007
Posts: 161
|
| Posted: Sat Apr 09, 2011 8:06 pm Post subject: |
|
|
@Ant P. : I use schedtool like this:
| Code: | | schedtool -I -e ./mame tekken2 |
any other advice for the lowest possible input/output latency in emulators? |
|
| Back to top |
|
|
jbouzan
Tux's lil' helper
Joined: 23 Nov 2007
Posts: 138
|
| Posted: Sat Apr 09, 2011 11:30 pm Post subject: |
|
|
| PaulBredbury wrote: | | dennisn wrote: | | broke my resuming from hibernation |
Known upstream apparently. |
Annoying, but since .38 patches a problem I was having with btrfs I can't really switch back. Any idea whether the patch will be reversed? |
|
| Back to top |
|
|
epsilon72
Guru
Joined: 20 Sep 2007
Posts: 568
|
| Posted: Wed Apr 13, 2011 5:48 am Post subject: |
|
|
| PaulBredbury wrote: | | dennisn wrote: | | broke my resuming from hibernation |
Known upstream apparently. |
This seems to happen with 2.6.37-r4 as well though |
|
| Back to top |
|
|
piedar
Tux's lil' helper
Joined: 09 Aug 2010
Posts: 82
|
| Posted: Wed Apr 13, 2011 6:35 pm Post subject: |
|
|
| jbouzan wrote: | | PaulBredbury wrote: | | dennisn wrote: | | broke my resuming from hibernation |
Known upstream apparently. |
Annoying, but since .38 patches a problem I was having with btrfs I can't really switch back. Any idea whether the patch will be reversed? |
Just apply the patch yourself in the meantime.
https://patchwork.kernel.org/patch/690691/ |
|
| Back to top |
|
|
pilla
Bodhisattva
Joined: 07 Aug 2002
Posts: 7731
Location: Underworld
|
| Posted: Sun Apr 17, 2011 1:22 pm Post subject: |
|
|
404 Not found
2.6.38-gentoo-r2 is still segfaulting Xorg for me.
_________________
"I'm just very selective about the reality I choose to accept." -- Calvin |
|
| Back to top |
|
|
VinzC
Watchman
Joined: 17 Apr 2004
Posts: 5098
Location: Dark side of the mood
|
| Posted: Tue Apr 19, 2011 5:15 pm Post subject: |
|
|
| pilla wrote: | | 2.6.38-gentoo-r2 is still segfaulting Xorg for me. |
Does it crash right away or after a certain, random period of time?
_________________
Gentoo addict: tomorrow I quit, I promise!... Just one more emerge...
1739! |
|
| Back to top |
|
|
asturm
Developer
Joined: 05 Apr 2007
Posts: 9334
|
| Posted: Tue Apr 19, 2011 5:22 pm Post subject: |
|
|
| Sound is ok with unpatched 2.6.38.3 now |
|
| Back to top |
|
|
|
Kernel & Hardware
