Hello Aedazan,
at first, let me congratulate you for this post.
If this command really helps to speed up BOINC so much, this is - in my opinion - the most useful post of the year!!
I am very ready to help you and answer your question.
In Linux, there is a boot sequence just as it was in Windows.
At http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=2&chap=4
it says:
"4.a. Runlevels

Booting your System

(.....)
This process then makes sure that all filesystems (defined in /etc/fstab) are mounted and ready to be used. Then it executes several scripts located in /etc/init.d, which will start the services you need in order to have a successfully booted system.

"

So, as far as I understand, to change BOINCS priority at the start of your computer, you shoud add your "renice x PID" command to (one of) those init scripts, to make your machine execute the rencice dommand during the booting process.

I hope that this helps, but I am not sure.

Can you tell me, how you have found out that there is the necessity to carry out the renice command automatically?

Why is it impossible just to boot the machine nomally, then execute the renice command by hand afterwards?

If you do this, the priority of BOINC should be changed and then stay at high priority during the time of your absence.

Are you really sure, that if the renice command has been executed, that then afterwards BOINCs priority falls back to the level it had before?

I do not see any reason why this should happen.

Please give feeback, whether my answer was useful. Thank you.
Martin

From a Linux newbee:

Create a file called something like: set_WCG_prio.sh

Contents:



and start this script from a terminal window with this command: sh set_WCG_prio.sh


The zero is the nicelevel and sleep 600 is 10 minutes wait to set the process priority again in the case a new (sub)task has started.
Then you're ready for your long absence.

u'll be really surprised that u can get even more if u'll try to "attach" each wcg process to dedicated CPU core. for this u should use "taskset" command

if u want I can publish the script which doing this trick for me. to run it automatically i'm usiing cron

here we go.

make empty file (i.e. "affinity"), make it executable and copy-paste this:

#!/bin/bash
for i in `pgrep primegrid`; do taskset -pc 0 $i; renice -n -10 -p $i; done
for i in `pgrep flush`; do taskset -pc 1 $i; renice -n 0 -p $i; done
for i in `pgrep firefox`; do taskset -pc 2 $i; renice -n 0 -p $i; done
for i in `pgrep wcg`; do renice -n 0 -p $i; done

how it works (line 2). pgrep looking for process "primegrid" and using it's PID (process ID) attaching this process to core #0 and changing priority to -10 (pretty high, but that gives better perfomance though).

Assigning dedicates CPU core for flush and firefox drastically increasing their stabilty (primegrid app is perfectly optimazed).

Easy like that :-)

Some time ago I ran GPUGRID which required single CPU core for each GPU process. I attached GPUGRID app on core #0, but rosetta ran 8 apps, so I put two apps on core #7. I'm not really sure if some1 need that, but just in case:

for i in `pgrep minirosetta`; do let "j=j+1"; if [ $j -gt 7 ] ; then j=7; fi; taskset -pc $j $i; renice -n 0 -p $i; done

to be sure it works for you:

ps -eF | grep minirosetta

Now, the problem is that I'm really lazy and wanna make computer (but not me) start this script as ofter as every single minute. For that I used cron.

make empty file (i.e. "test"), make it executable and copy-paste this:

SHELL=/bin/bash
MAILTO=user
0-59 * * * * 
/path/to/file

and then:

crontab -u user_name test

value for renice is from -19 (high priority) to 19 (very low, on which BOINC apps running). While started by user renice can be increased up to "0" only, but I need smth more. So, I'm starting it as root.

That's it.

NP :-) I think it might be useful for all WCG users