| 1 |
Hi James, |
| 2 |
|
| 3 |
On Jan 30, 2008 5:26 AM, James Ausmus <james.ausmus@×××××.com> wrote: |
| 4 |
[ -- SNIP -- ] |
| 5 |
> Portage *does not* look at CFLAGS in determining what to rebuild (even |
| 6 |
> with -uDN) - portage only looks at USE flags and dependency |
| 7 |
> upgrades/versions. Mike is correct in saying that, for packages to be |
| 8 |
> recompiled with the new CFLAGS, he would have to recompile that |
| 9 |
> package directly. emerge -e world is a good way to do this.\ |
| 10 |
> |
| 11 |
> -James |
| 12 |
|
| 13 |
Yeah, that's what I thought. CFLAGS are only passed to gcc when it's |
| 14 |
executed by portage. I would expect that for any change to CFLAGS, all |
| 15 |
packages will need to be recompiled for those new CFLAGS to be |
| 16 |
utilized. Whether they will have any effect on the compiled result is |
| 17 |
another matter. |
| 18 |
|
| 19 |
> Removing Pango will almost definitely increase the render/scroll speed |
| 20 |
> of Firefox. |
| 21 |
> |
| 22 |
> However, from the symptoms that Mike is describing (system-wide |
| 23 |
> momentary pauses, after which the system resumes normal |
| 24 |
> responsiveness) sounds much more like a kernel-level issue - either |
| 25 |
> I/O speed issues (check to make sure your hard drive is running at |
| 26 |
> full speed and you have native controller supported compiled in to |
| 27 |
> your kernel - also, what is your I/O scheduler set to by default?) or |
| 28 |
> the Scheduler (process scheduler). What version of which kernel are |
| 29 |
> you running? What does your .config look like? |
| 30 |
> |
| 31 |
> I had similar issues with momentarily frozen responsiveness on my |
| 32 |
> laptop, until I upgraded to 2.6.23.x, which has the new CFS scheduler |
| 33 |
> in it - seems to help responsiveness quite a bit. |
| 34 |
|
| 35 |
Looking around `make menuconfig` I found a few settings which I'm not |
| 36 |
sure about, so I'll post them here: |
| 37 |
[*] Processor type and features -> Tickless System (Dynamic Ticks) |
| 38 |
[ ] Processor type and features -> High Resolution Timer Support |
| 39 |
[*] Processor type and features -> 64 bit Memory and IO resources (EXPERIMENTAL) |
| 40 |
Processor type and features -> Timer frequency -- currently set to 250 Hz |
| 41 |
|
| 42 |
For completeness, the .config for my 2.6.23-gentoo-r3 kernel is here: |
| 43 |
http://pastebin.ca/881174 |
| 44 |
|
| 45 |
Thanks! |
| 46 |
Mike |
| 47 |
-- |
| 48 |
gentoo-user@l.g.o mailing list |
Archives