Latency Tests
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6.2. Test Scenario 1 (TS1) Results

6.2.1. linux-2.6.14.2

6.2.1.1. Measurements

Table 6-1. Measurements

Target	Preemption Setting	Start	Stop	Iterations	Average Latency [us]	Minimum Latency [us]	Maximum Latency [us]	Average loadavg [processes]	Average busyness [CPU%]
LB700	k1	2005-Nov-15 11:22:45.985105	2005-Nov-15 11:48:39.230906	3000	35	34	233	.012	.021
LB700	k2	2005-Nov-15 11:49:33.214705	2005-Nov-15 12:15:26.432826	3000	35	34	55	.001	.019
LB700	k3	2005-Nov-15 12:20:47.243844	2005-Nov-15 12:46:41.652180	3000	37	36	55	.010	.016
Herc	k1	2005-Nov-15 13:41:13.078292	2005-Nov-15 14:07:06.333859	3000	45	44	68	.007	.030
Herc	k2	2005-Nov-15 14:10:14.719238	2005-Nov-15 14:36:09.733498	3000	45	44	67	.006	.014
Herc	k3	2005-Nov-15 14:39:38.344277	2005-Nov-15 15:05:31.555365	3000	47	46	72	.016	.015

6.2.1.2. Histogram

Table 6-2. Histogram

Target	Preempt	0 to 10 [us]	10 to 20 [us]	20 to 30 [us]	30 to 40 [us]	40 to 50 [us]	50 to 60 [us]	60 to 70 [us]	70 to 80 [us]	80 to 90 [us]	90 to 100 [us]	> 100 [us]
LB700	k1	0	0	0	2968	1	30	0	0	0	0	1
LB700	k2	0	0	0	2972	0	28	0	0	0	0	0
LB700	k3	0	0	0	2971	1	28	0	0	0	0	0
Herc	k1	0	0	0	0	2965	1	34	0	0	0	0
Herc	k2	0	0	0	0	2967	1	32	0	0	0	0
Herc	k3	0	0	0	0	2950	18	28	4	0	0	0

6.2.1.3. Graphs

See here for an explanation of the following graphs.

6.2.2. linux-2.6.14.2-rt12

6.2.2.1. Measurements

Table 6-3. Measurements

Target	Preemption Setting	Start	Stop	Iterations	Average Latency [us]	Minimum Latency [us]	Maximum Latency [us]	Average loadavg [processes]	Average busyness [CPU%]
LB700	k1	2005-Nov-15 12:50:34.388895	2005-Nov-15 13:16:37.993322	3000	38	37	48	.990	.024
LB700	k2	2005-Nov-15 13:19:04.187859	2005-Nov-15 13:45:07.550318	3000	38	37	51	.983	.025
LB700	k3	2005-Nov-15 13:46:14.737307	2005-Nov-15 14:12:18.221100	3000	40	39	51	.996	.025
LB700	k4	2005-Nov-15 14:13:46.912943	2005-Nov-15 14:39:52.154796	3000	46	45	58	.003	.024
Herc	k1	2005-Nov-15 15:40:18.996869	2005-Nov-15 16:06:33.307936	3000	49	48	62	1.00	.035
Herc	k2	2005-Nov-15 16:08:21.992222	2005-Nov-15 16:34:36.429656	3000	49	48	63	.996	.032
Herc	k3	2005-Nov-15 16:36:37.240189	2005-Nov-15 17:02:51.802307	3000	52	50	65	1.00	.037
Herc	k4	2005-Nov-15 17:04:23.098252	2005-Nov-15 17:30:37.608759	3000	64	62	77	.022	.035

6.2.2.2. Histogram

Table 6-4. Histogram

Target	Preempt	0 to 10 [us]	10 to 20 [us]	20 to 30 [us]	30 to 40 [us]	40 to 50 [us]	50 to 60 [us]	60 to 70 [us]	70 to 80 [us]	80 to 90 [us]	90 to 100 [us]	> 100 [us]
LB700	k1	0	0	0	2910	90	0	0	0	0	0	0
LB700	k2	0	0	0	2788	211	1	0	0	0	0	0
LB700	k3	0	0	0	495	2494	11	0	0	0	0	0
LB700	k4	0	0	0	0	2946	54	0	0	0	0	0
Herc	k1	0	0	0	0	2060	905	35	0	0	0	0
Herc	k2	0	0	0	0	1937	1025	38	0	0	0	0
Herc	k3	0	0	0	0	0	2963	37	0	0	0	0
Herc	k4	0	0	0	0	0	0	2952	48	0	0	0

6.2.2.3. Graphs

See here for an explanation of the following graphs.

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