can we limit the cpu use at 60% for emerge ?

Message

padoor · Post by **padoor** » Tue Mar 18, 2008 3:56 am

can we limit the cpu use at 60% for emerge and make video/audio player work simultaneously?
now it goes slowwwww music with emerge consuming all cpu power.
for an update world a day i cannot use the computer for any thing else.[laptop]
any ideas?
else with some connection scheme with desktop can i use that processor to emerge and leave the internal laptop processor free to play with other things?
full help needed.from ABC....

Old School · Post by **Old School** » Tue Mar 18, 2008 4:03 am

That is covered, I believe, with the make.conf

Code: Select all

PORTAGE_NICENESS="n"

padoor · Post by **padoor** » Tue Mar 18, 2008 4:49 am

NICE gives a vauge idea like the number increments the niceness.
favourable is -20 to 19
i tried setting
PORTAGE_NICENESS="-10"
in make.conf
it just did not bother about this new line.and does the same old thing only.

omp · Post by **omp** » Tue Mar 18, 2008 6:15 am

padoor wrote:PORTAGE_NICENESS="-10"

Maybe try going towards the correct direction.

padoor · Post by **padoor** » Tue Mar 18, 2008 6:50 am

ok
i made it PORTAGE_NICENESS="10"

still the system monitor says 0% idle for cpu.
why not give me some specific number setting there?

for i want 40% cpu free when it emerges a package.

omp · Post by **omp** » Tue Mar 18, 2008 6:56 am

padoor wrote:why not give me some specific number setting there?

Because why would you possibly want to use less CPU power than is available to you? With niceness set to a high value, if you were to run another CPU-intensive process, the compile process will stop hogging the CPU cycles. However, if it is the only such process running, it will use whatever it needs to in order to get the job done.

padoor · Post by **padoor** » Tue Mar 18, 2008 7:11 am

while updating the packages the emerge is the only possible thing i can do in this laptop.
any way it takes whole of the day for this purpose.
i dont mind doing it in 2 days and do some other work also.
i want the vlc or listen running a music and browsing the net and downloading some files with kget.
except music other 2 work without problems.

Naib · Post by **Naib** » Tue Mar 18, 2008 7:31 am

well... you could lower the -j# in make.conf

so rather then letting gcc have two threads per core, just let it have one

McLink · Post by **McLink** » Tue Mar 18, 2008 7:44 am

Try

Code: Select all

PORTAGE_NICENESS="19"
MAKEOPTS="-j1"

That should restrict Portage processes to very unfavourable scheduling and one make thread, meaning any other process will get CPU time before emerge.

nonas · Post by **nonas** » Tue Mar 18, 2008 9:45 am

You can take a look at cpulimit too.
http://cpulimit.sourceforge.net/

Akkara · Post by **Akkara** » Tue Mar 18, 2008 10:12 am

It could also be that what's causing your poor interactive performance is not the use of CPU, but contention for the disk.

energyman76b · Post by **energyman76b** » Tue Mar 18, 2008 11:06 am

niceness 19 has the benefit of 'batch scheduling' which might be a GOOD THING for stuff like compiling.

I for one love my hardware. I can install kde4 and watch disturbing videos at the same time .....

Naib · Post by **Naib** » Tue Mar 18, 2008 12:45 pm

energyman76b wrote:niceness 19 has the benefit of 'batch scheduling' which might be a GOOD THING for stuff like compiling.

I for one love my hardware. I can install kde4 and watch disturbing videos at the same time .....

installing kde4... with paludis?

energyman76b · Post by **energyman76b** » Tue Mar 18, 2008 12:47 pm

Naib wrote:
energyman76b wrote:niceness 19 has the benefit of 'batch scheduling' which might be a GOOD THING for stuff like compiling.

I for one love my hardware. I can install kde4 and watch disturbing videos at the same time .....
installing kde4... with paludis?

nope. portage. but with /usr/portage on reiser4 with lzo compression, /var on reiser4 with lzo compression, /var/tmp/portage on tmpfs.

Naib · Post by **Naib** » Tue Mar 18, 2008 12:58 pm

energyman76b wrote:
Naib wrote:
energyman76b wrote:niceness 19 has the benefit of 'batch scheduling' which might be a GOOD THING for stuff like compiling.

I for one love my hardware. I can install kde4 and watch disturbing videos at the same time .....
installing kde4... with paludis?
nope. portage. but with /usr/portage on reiser4 with lzo compression, /var on reiser4 with lzo compression, /var/tmp/portage on tmpfs.

Then I suggest you read all the thread of this mailing list
http://archives.gentoo.org/gentoo-dev/m ... 6c6a16.xml

For users of the KDE overlay's live ebuilds the new EAPI currently means
they will have to use Paludis but there are rumours other PMs are
interested as well. That's the main reason to optionally include it in
PMS.

even if you are not using the overlay, just wait till the ebuilds are ready to go into the main tree

padoor · Post by **padoor** » Tue Mar 18, 2008 1:21 pm

i have one ext3 partition / gentoo installation and it is laptop.
i can go for slower compiling as it is already slow.
instead of a day it can take 2 for update

energyman76b · Post by **energyman76b** » Tue Mar 18, 2008 1:39 pm

Naib wrote:
Then I suggest you read all the thread of this mailing list
http://archives.gentoo.org/gentoo-dev/m ... 6c6a16.xml

I prefer http://marc.info/?l=gentoo-dev&r=1&w=2

Naib wrote:
For users of the KDE overlay's live ebuilds the new EAPI currently means
they will have to use Paludis but there are rumours other PMs are
interested as well. That's the main reason to optionally include it in
PMS.
even if you are not using the overlay, just wait till the ebuilds are ready to go into the main tree

the magic word is 'live'

Live ebuilds are the svn ones. I couldn't care less

but thanks for the info.

square_ · Post by **square_** » Tue Mar 18, 2008 1:59 pm

padoor wrote:i have one ext3 partition / gentoo installation and it is laptop.
i can go for slower compiling as it is already slow.
instead of a day it can take 2 for update

stop whining!

bunder · Post by **bunder** » Tue Mar 18, 2008 2:38 pm

Portage questions go to P+P.

Moved from Off the Wall to Portage & Programming.

SnEptUne · Post by **SnEptUne** » Tue Mar 18, 2008 8:58 pm

padoor wrote:i have one ext3 partition / gentoo installation and it is laptop.
i can go for slower compiling as it is already slow.
instead of a day it can take 2 for update

Are you using a Pentium 2 or something? Even on this Pentium 3, updating firefox wouldn't take more than 3 hours. Well, if you are updating and compling openoffice..., but openoffice doesn't have update that often.

Corona688 · Post by **Corona688** » Tue Mar 18, 2008 9:43 pm

If you're using the CFQ I/O scheduler in your kernel, you can change the priority of a process' disk access with the ionice tool, part of the schedutils package.

pteppic · Post by **pteppic** » Tue Mar 18, 2008 10:48 pm

Corona688 wrote:If you're using the CFQ I/O scheduler in your kernel, you can change the priority of a process' disk access with the ionice tool, part of the schedutils package.

Sometimes you come across a real gem of information here on the forums, just like this one, thanks.

padoor · Post by **padoor** » Wed Mar 19, 2008 12:33 pm

Corona688 wrote:If you're using the CFQ I/O scheduler in your kernel, you can change the priority of a process' disk access with the ionice tool, part of the schedutils package.

CFQ I/O i dont have any idea about this.
any reading on this available.

my laptop is p3 1GHz 512 mb

i am not whining about slow emerge.
i am ready to go still slower provided the cpu will give some power to other video and music also while emerging.

flysideways · Post by **flysideways** » Wed Mar 19, 2008 1:08 pm

pteppic wrote:
Corona688 wrote:If you're using the CFQ I/O scheduler in your kernel, you can change the priority of a process' disk access with the ionice tool, part of the schedutils package.
Sometimes you come across a real gem of information here on the forums, just like this one, thanks.

++

http://forums.gentoo.org/viewtopic-t-462230.html

flysideways · Post by **flysideways** » Wed Mar 19, 2008 1:10 pm

padoor wrote: any ideas?
else with some connection scheme with desktop can i use that processor to emerge and leave the internal laptop processor free to play with other things?

That would be distcc. I have also seen suggestions elsewhere in the forums to do a build on a fast computer and rsync the binaries to the slower one, never tried it though.

can we limit the cpu use at 60% for emerge ?

can we limit the cpu use at 60% for emerge ?

Re: can we limit the cpu use at 60% for emerge ?