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Old 09-05-2004, 01:01 AM   #1
ganja_guru
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Preemptible Kernel (PREEMPT)---yes or no?


ok according to the description , preemptible kernel is recommended for desktops...but then i read somewhere else that dvd playback and tabbed browsing is better when this option is turned off...

is this true? is it better to leave this option on or turn it off?

what else can i do to improve the speed of tab switching in opera?
 
Old 09-05-2004, 05:37 AM   #2
masand
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hi there

preemptible kernel is requed where u do not want the lower priority process to block the higher priority process from getting the control of the resources

i have been using preemptible kernel for a long time and facing no problems
as far as ur dvd problem is concerned maybe since it is a lower priority process so it might have been ejcted by a higher priority process
u can help this out by keeping the priority of ur dvd player to high
using nice values

and what problem are u facing in tab switching in opera???

regards
 
Old 09-05-2004, 05:42 AM   #3
hw-tph
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The preempt option in the 2.6 series does far less than it did it the 2.4 series because the older kernel didn't use very effective scheduling (for some tasks, like audio work). In the 2.6 kernel the difference between a preemptible kernel and a non-preemptible is far less and is really only "needed" for audio workstations. Many users think the non-preemptible 2.6 kernels are quicker too.


Håkan
 
Old 09-05-2004, 08:53 AM   #4
ganja_guru
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no i wasnt specifically facing dvd problems myself....just read it on this forum that it helped some guy get smoother playback when he turned off preemtible kernel..anyway i just recompiled and running with it now without any problems..

except...slow tab switching in opera and firefox..

in opera...after i switch to the adjacent tab ...the page is displayed in like half a second and the tab i clicked is highlighted in abt two and a half seconds...in comparison to konqueror which is just bloody fast..(but doesnt display web pages as well as opera)..similar problems in firefox..

is there some sort of customized build available for opera (like the custom builds u can download from forums.mozillazine.org) specific for athlon xp?

my specs...

athlon xp 2 Ghz
7200 HDD with hdparm stuff enabled(dma,xfer...blah blah)
geforce ti 4600 w/ nvidia 6111 driver
kernel 2.6.8(with all unnecessary drivers eliminated)
kde 3.3
slackware 10.0
1gb ddr ram(with highmem enabled in the kernel)


is there anyway i can improve the general performance of the machine?

thanx for the help..
 
Old 09-05-2004, 09:11 AM   #5
masand
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hi there

we had discused about increasing the performance of ur machine in another thread also, and i think u got sdnme good results there
u are having a very good config. and i do not undrstand why a u having such a problem
maybe u should try a different distro

i am using firefox and opera and works like charm

i am having FC2 with KDE 3.3.
P3 866Mhz,256 Mb ram with 2.6.8.1 kernel
this is quite low as compared to urs and i m getting good performance here
may be u should try a differnet distro

regards
 
Old 09-05-2004, 10:30 AM   #6
ganja_guru
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yeah masand, im just trying to tweak the hell out of this system...and the best place to do it is slackware...

im not willing to try any other red hat based distro cause of a horrible experience with RH 9..

ive tried suse..that was ok but yast was really slow to load..

in the end, i like the insane amount of configuration i can do when it comes to slack..
 
Old 09-05-2004, 10:49 AM   #7
masand
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hi

have u seen this distro(slack) working out at anyother location,
maybe at ur friends place

does Slack run like this only
and what is it so with redhat/fedora???
i have ben using this for the past 4 years and it works like charm for me although some hiccups are there

regards

Last edited by masand; 09-05-2004 at 10:51 AM.
 
Old 09-05-2004, 11:13 AM   #8
ganja_guru
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he he ...finding a linux user in madras is tough enough...leave alone a slackware user...

i see you've tried freebsd...any comments?
 
Old 09-05-2004, 11:29 AM   #9
masand
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hi there

i am actually fond of trying out various distros
to add to it i hav trued knoppix,mandrake and what distros i get

ysh i tried FREEBSD,actually i was very muh enthusiatic about tryong out a new *nix distro,but the same problem here,i could not find any help for that here
and frebsd is good for unix programming and we do not have as many applications for Freebsd as we get for linux distros

also ,there was this port system in Freebsd to install applications which i could not try out since i did not had any net connection at that time at my residence,so i could not try many applications there

ans i realised that i will njoy administration and development on a stable linux distro ,than freebsd .

regards
 
  


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