Messages in this thread | | | Subject | Re: [PATCH]O20.1int | Date | Wed, 10 Sep 2003 09:36:48 -0700 | From | Cliff White <> |
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> Should be the last of the O1int patches. > > Tiny tweak to keep top two interactive levels round robin at the fastest > (10ms) which keeps X smooth when another interactive task is also using > bursts of cpu (eg web browser). > > Credit. Is this too bold?
Con, Patch is in STP PLM as # 2120. One request - would you mind uploading future patches into PLM, since you're already an associate? (http://www.osdl.org/plm-cgi/plm) It's a real simple Web form, and would get the code on the test machines a bunch quicker. thanks cliffw
> > Con > > --- linux-2.6.0-test5-mm1-O20/kernel/sched.c 2003-09-10 11:15:45.000000000 +1000 > +++ linux-2.6.0-test5-mm1/kernel/sched.c 2003-09-10 11:51:38.000000000 +1000 > @@ -14,6 +14,7 @@ > * an array-switch method of distributing timeslices > * and per-CPU runqueues. Cleanups and useful suggestions > * by Davide Libenzi, preemptible kernel bits by Robert Love. > + * 2003-09-03 Interactivity tuning by Con Kolivas. > */ > > #include <linux/mm.h> > @@ -122,12 +123,12 @@ > MAX_SLEEP_AVG) > > #ifdef CONFIG_SMP > -#define TIMESLICE_GRANULARITY(p) \ > - (MIN_TIMESLICE * (1 << (MAX_BONUS - CURRENT_BONUS(p))) * \ > - num_online_cpus()) > +#define TIMESLICE_GRANULARITY(p) (MIN_TIMESLICE * \ > + (1 << (((MAX_BONUS - CURRENT_BONUS(p)) ? : 1) - 1)) * \ > + num_online_cpus()) > #else > -#define TIMESLICE_GRANULARITY(p) \ > - (MIN_TIMESLICE * (1 << (MAX_BONUS - CURRENT_BONUS(p)))) > +#define TIMESLICE_GRANULARITY(p) (MIN_TIMESLICE * \ > + (1 << (((MAX_BONUS - CURRENT_BONUS(p)) ? : 1) - 1))) > #endif > > #define SCALE(v1,v1_max,v2_max) \ >
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