Re: [RFC PATCH 0/2] sched: simplify the select_task_rq_fair()
From: Mike Galbraith
Date: Tue Jan 22 2013 - 09:41:28 EST
On Tue, 2013-01-22 at 16:56 +0800, Michael Wang wrote:
> What about this patch? May be the wrong map is the killer on balance
> path, should we check it? ;-)
[ 1.232249] Brought up 40 CPUs
[ 1.236003] smpboot: Total of 40 processors activated (180873.90 BogoMIPS)
[ 1.244744] CPU0 attaching sched-domain:
[ 1.254131] NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter.
[ 1.252010] domain 0: span 0,16 level SIBLING
[ 1.280001] groups: 0 (cpu_power = 589) 16 (cpu_power = 589)
[ 1.292540] domain 1: span 0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38 level MC
[ 1.312001] groups: 0,16 (cpu_power = 1178) 2,18 (cpu_power = 1178) 4,20 (cpu_power = 1178) 6,22 (cpu_power = 1178) 8,24 (cpu_power = 1178)
10,26 (cpu_power = 1178)12,28 (cpu_power = 1178)14,30 (cpu_power = 1178)32,36 (cpu_power = 1178)34,38 (cpu_power = 1178)
[ 1.368002] domain 2: span 0-39 level NUMA
[ 1.376001] groups: 0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38 (cpu_power = 11780)
1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39 (cpu_power = 11780)
[ 1.412546] WYT: sbm of cpu 0
[ 1.416001] WYT: exec map
[ 1.424002] WYT: sd 6ce55000, idx 0, level 0, weight 2
[ 1.436001] WYT: sd 6ce74000, idx 1, level 1, weight 20
[ 1.448001] WYT: sd 6cef3000, idx 3, level 3, weight 40
[ 1.460001] WYT: fork map
[ 1.468001] WYT: sd 6ce55000, idx 0, level 0, weight 2
[ 1.480001] WYT: sd 6ce74000, idx 1, level 1, weight 20
[ 1.492001] WYT: sd 6cef3000, idx 3, level 3, weight 40
[ 1.504001] WYT: wake map
Hi, we're not home right now...
[ 1.508001] WYT: affine map
[ 1.516001] WYT: affine with cpu 0 in sd 6ce55000, weight 2
[ 1.528001] WYT: affine with cpu 1 in sd 6cef3000, weight 40
[ 1.544001] WYT: affine with cpu 2 in sd 6ce74000, weight 20
[ 1.556001] WYT: affine with cpu 3 in sd 6cef3000, weight 40
[ 1.568001] WYT: affine with cpu 4 in sd 6ce74000, weight 20
[ 1.584001] WYT: affine with cpu 5 in sd 6cef3000, weight 40
[ 1.596001] WYT: affine with cpu 6 in sd 6ce74000, weight 20
[ 1.608001] WYT: affine with cpu 7 in sd 6cef3000, weight 40
[ 1.624001] WYT: affine with cpu 8 in sd 6ce74000, weight 20
[ 1.636001] WYT: affine with cpu 9 in sd 6cef3000, weight 40
[ 1.648001] WYT: affine with cpu a in sd 6ce74000, weight 20
[ 1.660001] WYT: affine with cpu b in sd 6cef3000, weight 40
[ 1.676001] WYT: affine with cpu c in sd 6ce74000, weight 20
[ 1.688001] WYT: affine with cpu d in sd 6cef3000, weight 40
[ 1.700001] WYT: affine with cpu e in sd 6ce74000, weight 20
[ 1.716001] WYT: affine with cpu f in sd 6cef3000, weight 40
[ 1.728001] WYT: affine with cpu 10 in sd 6ce55000, weight 2
[ 1.740001] WYT: affine with cpu 11 in sd 6cef3000, weight 40
[ 1.756001] WYT: affine with cpu 12 in sd 6ce74000, weight 20
[ 1.768001] WYT: affine with cpu 13 in sd 6cef3000, weight 40
[ 1.780001] WYT: affine with cpu 14 in sd 6ce74000, weight 20
[ 1.796001] WYT: affine with cpu 15 in sd 6cef3000, weight 40
[ 1.808001] WYT: affine with cpu 16 in sd 6ce74000, weight 20
[ 1.820001] WYT: affine with cpu 17 in sd 6cef3000, weight 40
[ 1.836001] WYT: affine with cpu 18 in sd 6ce74000, weight 20
[ 1.848001] WYT: affine with cpu 19 in sd 6cef3000, weight 40
[ 1.860001] WYT: affine with cpu 1a in sd 6ce74000, weight 20
[ 1.876001] WYT: affine with cpu 1b in sd 6cef3000, weight 40
[ 1.888001] WYT: affine with cpu 1c in sd 6ce74000, weight 20
[ 1.900001] WYT: affine with cpu 1d in sd 6cef3000, weight 40
[ 1.916001] WYT: affine with cpu 1e in sd 6ce74000, weight 20
[ 1.928001] WYT: affine with cpu 1f in sd 6cef3000, weight 40
[ 1.940001] WYT: affine with cpu 20 in sd 6ce74000, weight 20
[ 1.956001] WYT: affine with cpu 21 in sd 6cef3000, weight 40
[ 1.968001] WYT: affine with cpu 22 in sd 6ce74000, weight 20
[ 1.984001] WYT: affine with cpu 23 in sd 6cef3000, weight 40
[ 1.996001] WYT: affine with cpu 24 in sd 6ce74000, weight 20
[ 2.008002] WYT: affine with cpu 25 in sd 6cef3000, weight 40
[ 2.024002] WYT: affine with cpu 26 in sd 6ce74000, weight 20
[ 2.036001] WYT: affine with cpu 27 in sd 6cef3000, weight 40
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