OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
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Click here to display the system's profile data or here to proceed to next system.

Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.
Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackbslot5s.osadl.org (updated Thu Jul 03, 2025 00:44:45)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1016617	99	54	45,6	cyclictest	1128413	-21	cut	00:35:19	1
1016622	99	52	43,5	cyclictest	1060843	-21	cron	21:20:01	2
1016611	99	46	35,8	cyclictest	12	1	ktimers/0	00:15:13	0
1016622	99	45	8,4	cyclictest	1108033	-21	grep	23:35:21	2
1016627	99	44	37,4	cyclictest	1053806	-21	munin-plugin-st	21:00:00	3
1016622	99	44	38,4	cyclictest	1058691	-21	kworker/u8:2+events_unbound	21:21:32	2
1016622	99	44	38,4	cyclictest	1001540	-21	kworker/u8:2+events_unbound	19:16:06	2
1016622	99	44	27,6	cyclictest	13	1	rcu_preempt	20:45:15	2
1016611	99	43	32,7	cyclictest	1106902	-21	unixbench_singl	23:30:24	0
1016627	99	41	28,9	cyclictest	1027564	-21	cron	19:40:00	3
1016622	99	41	34,5	cyclictest	1112473	-21	kworker/u8:1+events_unbound	23:48:33	2
1016622	99	41	34,5	cyclictest	1081649	-21	kworker/u8:1+events_unbound	22:21:41	2
1016611	99	41	34,4	cyclictest	1040162	-21	sendmail	20:20:01	0
1016611	99	41	33,4	cyclictest	0	-21	swapper/0	21:26:29	0
1016622	99	40	34,4	cyclictest	1065813	-21	kworker/u8:0+events_unbound	21:41:33	2
1016617	99	40	27,9	cyclictest	23	1	ktimers/1	21:55:13	1
1016627	99	39	32,5	cyclictest	39	1	ktimers/3	19:55:08	3
1016617	99	39	31,4	cyclictest	0	-21	swapper/1	00:15:00	1
1016611	99	39	32,4	cyclictest	1043582	-21	idleruntime-cro	20:30:00	0
1016611	99	39	25,10	cyclictest	12	1	ktimers/0	23:40:17	0
1016627	99	38	25,9	cyclictest	1081748	-21	sendmail	22:20:00	3
1016622	99	38	32,4	cyclictest	1056956	-21	kworker/u8:1+events_unbound	21:26:32	2
1016622	99	38	32,4	cyclictest	1026095	-21	kworker/u8:0+events_unbound	19:36:11	2
1016622	99	38	30,4	cyclictest	0	-21	swapper/2	21:35:18	2
1016622	99	38	20,5	cyclictest	13	1	rcu_preempt	19:20:26	2
1016622	99	38	19,11	cyclictest	13	1	rcu_preempt	23:55:23	2
1016617	99	38	29,5	cyclictest	299	-21	systemd-logind	19:26:07	1
1016611	99	38	31,4	cyclictest	0	-21	swapper/0	21:10:01	0
1016627	99	37	28,4	cyclictest	0	-21	swapper/3	22:55:01	3
1016627	99	37	25,7	cyclictest	1129294	-21	grep	00:35:29	3
1016622	99	37	31,4	cyclictest	1107149	-21	kworker/u8:1+events_unbound	23:41:56	2
1016622	99	37	27,5	cyclictest	0	-21	swapper/2	21:30:16	2
1016617	99	37	27,7	cyclictest	1100937	-21	fschecks_time	23:15:16	1
1016622	99	36	30,4	cyclictest	1051836	-21	kworker/u8:2+events_unbound	21:01:27	2
1016622	99	36	26,6	cyclictest	1120741	-21	grep	00:10:27	2
1016622	99	36	24,7	cyclictest	0	-21	swapper/2	20:25:26	2
1016617	99	36	29,4	cyclictest	1058916	-21	cron	21:15:00	1
1016627	99	35	27,4	cyclictest	0	-21	swapper/3	21:50:17	3
1016627	99	35	27,4	cyclictest	0	-21	swapper/3	21:30:27	3
1016627	99	35	27,4	cyclictest	0	-21	swapper/3	21:25:01	3
1016627	99	35	26,4	cyclictest	0	-21	swapper/3	00:23:48	3
1016622	99	35	25,6	cyclictest	0	-21	swapper/2	22:55:29	2
1016622	99	35	22,9	cyclictest	1017948	-21	grep	19:10:25	2
1016622	99	35	22,8	cyclictest	0	-21	swapper/2	19:25:27	2
1016622	99	35	10,8	cyclictest	32	-21	ksoftirqd/2	20:40:17	2
1016617	99	35	26,6	cyclictest	1016649	-21	wc	19:10:01	1
1016627	99	34	23,7	cyclictest	1125808	-21	grep	00:25:24	3
1016622	99	34	23,7	cyclictest	0	-21	swapper/2	00:20:01	2
1016622	99	34	19,3	cyclictest	13	1	rcu_preempt	20:32:56	2
1016622	99	34	18,4	cyclictest	13	1	rcu_preempt	23:53:15	2
1016617	99	34	26,5	cyclictest	1027575	-21	munin-plugin-st	19:40:01	1
1016617	99	34	23,7	cyclictest	1051624	-21	grep	20:50:25	1
1016611	99	34	26,5	cyclictest	1128415	-21	fschecks_time	00:35:19	0
1016627	99	33	22,8	cyclictest	0	-21	swapper/3	23:20:01	3
1016622	99	33	27,4	cyclictest	1081649	-21	kworker/u8:1+events_unbound	22:26:43	2
1016622	99	33	27,4	cyclictest	1081649	-21	kworker/u8:1+events_unbound	22:26:43	2
1016622	99	33	23,5	cyclictest	0	-21	swapper/2	20:10:25	2
1016622	99	33	21,7	cyclictest	1053375	-21	grep	20:55:29	2
1016622	99	33	10,12	cyclictest	1076405	-21	kworker/u8:2-events_freezable_power_	22:18:17	2
1016617	99	33	26,4	cyclictest	1122879	-21	munin-run	00:20:00	1
1016617	99	33	25,4	cyclictest	0	-21	swapper/1	00:00:01	1
1016617	99	33	22,8	cyclictest	0	-21	swapper/1	21:00:01	1
1016611	99	33	23,6	cyclictest	0	-21	swapper/0	22:06:36	0
1016611	99	33	22,7	cyclictest	0	-21	swapper/0	22:25:27	0
1016611	99	33	22,7	cyclictest	0	-21	swapper/0	22:25:27	0
1016627	99	32	24,4	cyclictest	0	-21	swapper/3	23:20:26	3
1016627	99	32	22,6	cyclictest	0	-21	swapper/3	22:00:00	3
1016622	99	32	7,5	cyclictest	13	1	rcu_preempt	00:30:00	2
1016622	99	32	7,14	cyclictest	32	-21	ksoftirqd/2	00:35:21	2
1016622	99	32	25,5	cyclictest	1124393	-21	kworker/u8:2+events_unbound	00:23:50	2
1016622	99	32	21,7	cyclictest	1056297	-21	tr	21:05:23	2
1016622	99	32	17,5	cyclictest	1026095	-21	kworker/u8:0+events_unbound	19:55:59	2
1016622	99	32	16,3	cyclictest	13	1	rcu_preempt	23:32:25	2
1016622	99	32	1,5	cyclictest	0	-21	swapper/2	22:40:18	2
1016611	99	32	24,4	cyclictest	0	-21	swapper/0	20:55:00	0
1016611	99	32	23,5	cyclictest	0	-21	swapper/0	00:05:00	0
1016611	99	32	1,29	cyclictest	0	-21	swapper/0	19:15:11	0
1016627	99	31	25,4	cyclictest	1074657	-21	kworker/u8:1+events_unbound	22:01:37	3
1016627	99	31	24,4	cyclictest	0	-21	swapper/3	19:55:01	3
1016627	99	31	23,4	cyclictest	0	-21	swapper/3	23:55:26	3
1016622	99	31	8,14	cyclictest	32	-21	ksoftirqd/2	22:45:22	2
1016622	99	31	21,5	cyclictest	0	-21	swapper/2	23:20:26	2
1016622	99	31	21,4	cyclictest	0	-21	swapper/2	23:25:17	2
1016622	99	31	18,3	cyclictest	13	1	rcu_preempt	23:05:20	2
1016622	99	31	12,3	cyclictest	13	1	rcu_preempt	20:00:18	2
1016622	99	31	11,5	cyclictest	13	1	rcu_preempt	22:05:25	2
1016617	99	31	24,3	cyclictest	0	-21	swapper/1	22:45:30	1
1016617	99	31	23,4	cyclictest	0	-21	swapper/1	23:35:18	1
1016611	99	31	24,4	cyclictest	1027580	-21	sendmail	19:40:00	0
1016611	99	31	24,3	cyclictest	0	-21	swapper/0	22:10:27	0
1016611	99	31	22,6	cyclictest	0	-21	swapper/0	20:35:01	0
1016611	99	31	19,8	cyclictest	12	1	ktimers/0	20:10:14	0
1016627	99	30	19,7	cyclictest	0	-21	swapper/3	20:25:25	3
1016627	99	30	1,5	cyclictest	13	1	rcu_preempt	22:35:17	3
1016622	99	30	9,12	cyclictest	13	1	rcu_preempt	22:10:27	2
1016622	99	30	24,4	cyclictest	1039920	-21	kworker/u8:2+events_unbound	20:21:18	2
1016622	99	30	2,11	cyclictest	0	-21	swapper/2	22:54:07	2
1016622	99	30	20,5	cyclictest	1039920	-21	kworker/u8:2+events_unbound	20:17:43	2
1016622	99	30	17,5	cyclictest	1112473	-21	kworker/u8:1+events_unbound	00:03:50	2
1016622	99	30	14,9	cyclictest	13	1	rcu_preempt	00:05:19	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17