2.6.12-nitro5 "Make my day"

Message

wdreinhart · Post by **wdreinhart** » Thu Sep 01, 2005 8:25 pm

albyjr wrote:What would the echo command look like for these >>> /proc/sys/kernel/{timeslice,timeslice_factor,burst_factor} with an echo command too ?
ie timeslice=3 or timeslice = 3 ? I dont want to experiment and screw something up.
The reason I'm trying to adjust these since the upgrade to nitro5 I'm have display problems with VDR on my tv takes several seconds before the picture and osd displays correctly when changing channels. fyi 2.6.12 nitro2 did not have this problem.

It's "echo -n 4 > /proc/sys/kernel/timeslice". The easier way is to add those parameters to /etc/sysctl.conf so they get applied automagically every time you reboot.

Code: Select all

kernel.timeslice = 4
kernel.timeslice_factor = 18

Der_Kaplan · Post by **Der_Kaplan** » Fri Sep 02, 2005 1:56 pm

hello all!

just for information, there are several patchsets from other guys:

http://iphitus.loudas.com/archck.php
http://ckpp.tuxfamily.org/

mainly for the reiser4 people...

cheers

der kaplan

priestjim · Post by **priestjim** » Fri Sep 02, 2005 11:29 pm

AFAIK the last nitro featureset was exactly what I need so I am going to wait for the next nitro release...

Cinder6 · Post by **Cinder6** » Mon Sep 05, 2005 4:26 am

hey, what version of alsa-driver is in nitro5? Just wondering if the portage one is newer.

thanks.

satanskin · Post by **satanskin** » Mon Sep 05, 2005 4:37 am

hey, what version of alsa-driver is in nitro5? Just wondering if the portage one is newer.

I believe the one in the kernel is the one from CVS at the time of patching it. Either way I'm about 95% sure that the kernel version is newer than the portage version.

Cinder6 · Post by **Cinder6** » Mon Sep 05, 2005 6:44 am

hmm, still newer? it's been a while, and the last portage update was on August 25...

baeksu · Post by **baeksu** » Mon Sep 05, 2005 8:47 am

Maybe the next nitro (whenever it comes) should include also swap prefetching?

priestjim · Post by **priestjim** » Mon Sep 05, 2005 10:35 am

Read here : http://bhhdoa.org.au/pipermail/ck/2005- ... 04206.html and the follow ups...

Thetargos · Post by **Thetargos** » Tue Sep 06, 2005 4:26 am

Anyone know when (if) will the 2.6.13 patch be out? I've tried the latest CK and the CK version of Arch Linux patch for 2.6.13, but for some reason I've found quite a bit higher memory utilization with these kernels than Nitro5 with 2.6.12.5... I was wondering when will .13-nitro1 would be out.

Cinder6 · Post by **Cinder6** » Tue Sep 06, 2005 5:38 am

When Tiger gets back, I guess, or you could bug seppe about it (like Tiger suggested a few pages back when he said he was going on vacation).

bollucks · Post by **bollucks** » Tue Sep 06, 2005 11:36 am

Thetargos wrote:Anyone know when (if) will the 2.6.13 patch be out? I've tried the latest CK and the CK version of Arch Linux patch for 2.6.13, but for some reason I've found quite a bit higher memory utilization with these kernels than Nitro5 with 2.6.12.5... I was wondering when will .13-nitro1 would be out.

Using memory is not a bad thing. Read the many faqs on the linux vm. I bet they don't slow anything down, and since nitro is ck based there is no reason nitro would use any different amount of ram when updated to 2.6.13.

Thetargos · Post by **Thetargos** » Tue Sep 06, 2005 2:59 pm

I've read about the VM and its new implementation on several sites, however, I do know that what I'm seing is not the behavior of your typical 2.6.x kernel, but rather much more alike to a 2.4.x based kernel (in the sense that unused stuff unloads after a while). The behavior I'm seeing is that memory gets occupied, but rarely freed, even when the application that caused the elevation (like Adobe's Acrobat Reader 7) has been long not used after it was originally launched. With the 2.6.12.5-nitro5 kernel, I do not see such behavior. It loads stuff into memory and has a good amount of buffers, yes, but when something is not used in, say, 10 minutes that memory is freed for good (or until I load up some application that is memory hungry, like UT2004). My point is whether or not this is a CK bug or "feature".

Kensai · Post by **Kensai** » Tue Sep 06, 2005 10:29 pm

Now CK2 patchset has this kool feature baeksu wityh swap prefetching and make the system performance behave better. I'm in love with Con Kolivas patchset till nitro releases something again.

Thetargos · Post by **Thetargos** » Tue Sep 06, 2005 11:07 pm

I'll give this CK2 patch a whirl while Tiger gets some Nitro goodness out the door

Kensai · Post by **Kensai** » Tue Sep 06, 2005 11:36 pm

Thetargos wrote:I'll give this CK2 patch a whirl while Tiger gets some Nitro goodness out the door

Also memory usage is still very low to me. 40MB out of 1GB ram that leaves 96% free.

Thetargos · Post by **Thetargos** » Wed Sep 07, 2005 12:23 am

The application which gave a bit of problems was Acrobat Reader 7, which loaded a bunch of stuff and never unloaded, memory usage stayed the same from that moment on (even after 3 days uptime, which was way too much to keep the data loaded into memory). That never happened with nitro5.

Cinder6 · Post by **Cinder6** » Wed Sep 07, 2005 2:56 am

Just a question...what exactly does swap prefetching do?

bollucks · Post by **bollucks** » Wed Sep 07, 2005 3:11 am

Cinder6 wrote:Just a question...what exactly does swap prefetching do?

http://kerneltrap.org/node/5619

Kensai · Post by **Kensai** » Wed Sep 07, 2005 3:11 am

Cinder6 wrote:Just a question...what exactly does swap prefetching do?

One is surfing the internet and having some browser windows opened. Now,
without closing the browser windows, he is playing some game which needs
pretty much memory so the browsers memory is getting swapped out. After
finishing gaming he's going to make some coffee and then surfing the internet
again.
But even if the computer was IDLE for a time and, as the game was closed
again, some memory is really FREE, the pages for the browser are swapped in
just when they are needed and not in advance.

With this feature there should be no performance decrease because only free
resources would be used, and if pages were swapped in but not be used, they
stay not dirty and so have not to be written to disk when they are swapped
out again. But the improvements should be obvious if simply the last swaped
out pages are swapped in again...

This was explained by Thomas Schlichter.

Cinder6 · Post by **Cinder6** » Wed Sep 07, 2005 3:19 am

Thanks, Kensai.

Cinder6 · Post by **Cinder6** » Wed Sep 07, 2005 4:35 am

Not sure why I'm getting all inquisitive NOW, since I have been using nitro5 since it was released...but here goes, anyways.

Where is the HIMEM support? Can't find it in .config or menuconfig.

Thanks.

Thetargos · Post by **Thetargos** » Wed Sep 07, 2005 4:40 am

You mean in Nitro or CK?

Cinder6 · Post by **Cinder6** » Wed Sep 07, 2005 4:43 am

Nitro, this being the Nitro thread

Thetargos · Post by **Thetargos** » Wed Sep 07, 2005 4:45 am

Well, running menuconfig I see the option right above the 1Gb lowmemory option to enable HighMem.

Cinder6 · Post by **Cinder6** » Wed Sep 07, 2005 4:48 am

under which setting?

2.6.12-nitro5 "Make my day"

ck-patchsets

2.6.13 support?

Re: 2.6.13 support?