| 1 |
On Donnerstag, 14. Juni 2007, Mark Knecht wrote: |
| 2 |
> I'm wondering if anyone can recommend a good setting for |
| 3 |
> PORTAGE_NICENESS that would allow some compiles in the background |
| 4 |
> without drastically effecting MythTV? Or is there some better way to |
| 5 |
> do this with other software? |
| 6 |
> |
| 7 |
> I've fiddled around with renicing mythfrontend but even going to -15 |
| 8 |
> didn't seem to help that much. Seems better to just make the compiles |
| 9 |
> slower and more friendly. |
| 10 |
> |
| 11 |
> Note that this seems somewhat worse under the newest -rt kernel - |
| 12 |
> 2.6.21.4-rt12-cfs-v17. I may need to back up and see if the previous |
| 13 |
> one I was running was any better. |
| 14 |
> |
| 15 |
> Thanks in advance, |
| 16 |
> Mark |
| 17 |
|
| 18 |
|
| 19 |
set it to +19 |
| 20 |
|
| 21 |
not only does it free lots of CPU cycles for everybody else, they are |
| 22 |
also 'batch scheduled' which should be good for compiling. |
| 23 |
|
| 24 |
read /usr/src/linux/Documentation/sched-desing.txt |
| 25 |
|
| 26 |
quote: |
| 27 |
- batch scheduling. A significant proportion of computing-intensive tasks |
| 28 |
benefit from batch-scheduling, where timeslices are long and processes |
| 29 |
are roundrobin scheduled. The new scheduler does such batch-scheduling |
| 30 |
of the lowest priority tasks - so nice +19 jobs will get |
| 31 |
'batch-scheduled' automatically. With this scheduler, nice +19 jobs are |
| 32 |
in essence SCHED_IDLE, from an interactiveness point of view. |
| 33 |
-- |
| 34 |
gentoo-amd64@g.o mailing list |
Archives