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number of CPUs	CPU in the group	time, msec
1 per test	single 5,10,32,64,96,127	206-226
8	0-7	225
8	8-15	221
8	24-31	224
8	120-127	216
15	every 8-th, 0,8,24,32,...120	203
16	0-15	282
16	32-47	282
16	64-79	287
16	112-127	248
28	0-31 excl. weka	262
32	32-63	287
32	64-95	272
32	96-127	382
56	0-63 excl. weka	288
64	64-127	428
120	0-127 excl. weka	454
120	0-127 excl. weka repeat	383
120	0-127 on sdfmilan216	298

Part 2 of this analysis

Part 2 - Scaling behavior of psana1 - test with command perf stat

References