OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #0, slot #2

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.
Unexpectedly long latencies may be caused by SMIs
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 rack0slot2.osadl.org (updated Fri Jul 10, 2026 00:43:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2226638	2	95	0,1	sleep7	2226639	-21	grep	20:55:05	7
2014906	2	57	47,7	sleep4	0	-21	swapper/4	19:07:34	4
2015355	99	52	50,2	cyclictest	2015114	-21	kworker/u16:5+events_unbound	19:35:02	4
2014943	2	50	40,7	sleep5	0	-21	swapper/5	19:08:07	5
2014822	2	49	15,29	sleep7	0	-21	swapper/7	19:06:24	7
2015367	99	41	39,2	cyclictest	2754775	-21	kworker/u16:0+events_unbound	00:39:37	6
2015367	99	40	38,2	cyclictest	2620548	-21	kworker/u16:0+events_unbound	23:49:17	6
2015367	99	40	38,2	cyclictest	2583442	-21	kworker/u16:3+events_unbound	23:26:37	6
2015355	99	40	38,2	cyclictest	2546801	-21	kworker/u16:2+events_unbound	23:54:48	4
2015355	99	40	37,2	cyclictest	2262849	-21	kworker/u16:4+events_unbound	21:29:49	4
2015367	99	38	36,2	cyclictest	2681374	-21	kworker/u16:5+events_unbound	00:23:37	6
2015367	99	38	36,2	cyclictest	2400012	-21	kworker/u16:5+events_unbound	22:23:06	6
2015355	99	38	36,2	cyclictest	2620548	-21	kworker/u16:0+events_unbound	00:07:36	4
2015355	99	38	35,2	cyclictest	2262849	-21	kworker/u16:4+events_unbound	21:23:57	4
2664442	2	37	0,0	sleep7	2664444	-21	cut	23:55:12	7
2015368	99	37	0,35	cyclictest	2595650	-21	latency_hist	23:29:47	7
2015367	99	37	35,2	cyclictest	2681374	-21	kworker/u16:5+events_unbound	00:12:09	6
2015367	99	37	35,2	cyclictest	2583442	-21	kworker/u16:3+events_unbound	23:59:04	6
2015367	99	37	35,2	cyclictest	2262849	-21	kworker/u16:4+events_unbound	21:38:49	6
2015355	99	37	35,2	cyclictest	2396787	-21	kworker/u16:1+events_unbound	22:07:22	4
2015355	99	37	35,2	cyclictest	2362382	-21	kworker/u16:3+events_unbound	22:16:41	4
2015355	99	37	35,2	cyclictest	2230350	-21	kworker/u16:0+events_unbound	21:53:44	4
2014869	2	37	26,8	sleep6	0	-21	swapper/6	19:07:03	6
2015367	99	36	34,2	cyclictest	2697150	-21	kworker/u16:1+events_unbound	00:31:01	6
2015367	99	36	34,2	cyclictest	2509601	-21	kworker/u16:1+events_unbound	22:54:09	6
2015367	99	36	34,2	cyclictest	2473473	-21	kworker/u16:0+events_unbound	23:01:30	6
2015367	99	36	34,2	cyclictest	2362382	-21	kworker/u16:3+events_unbound	22:04:01	6
2015367	99	36	34,2	cyclictest	2362382	-21	kworker/u16:3+events_unbound	22:04:01	6
2015367	99	36	34,2	cyclictest	2338843	-21	kworker/u16:1+events_unbound	21:56:36	6
2015367	99	36	34,2	cyclictest	2262849	-21	kworker/u16:4+events_unbound	21:44:13	6
2015355	99	36	34,2	cyclictest	2583442	-21	kworker/u16:3+events_unbound	23:50:53	4
2015355	99	36	34,2	cyclictest	2583442	-21	kworker/u16:3+events_unbound	23:45:09	4
2015355	99	36	34,2	cyclictest	2396787	-21	kworker/u16:1+flush-8:0	22:10:20	4
2015355	99	36	34,2	cyclictest	2362382	-21	kworker/u16:3+events_unbound	22:24:30	4
2015355	99	36	33,2	cyclictest	2015114	-21	kworker/u16:5+flush-8:0	20:30:16	4
2015355	99	36	33,2	cyclictest	2015114	-21	kworker/u16:5+events_unbound	20:39:49	4
2015367	99	35	33,2	cyclictest	2583442	-21	kworker/u16:3+events_unbound	23:51:13	6
2015367	99	35	33,2	cyclictest	2424431	-21	kworker/u16:6+events_unbound	22:47:09	6
2015355	99	35	33,2	cyclictest	2396787	-21	kworker/u16:1+events_unbound	22:43:28	4
2015355	99	35	33,2	cyclictest	2396787	-21	kworker/u16:1+events_unbound	22:43:28	4
2015367	99	34	32,2	cyclictest	2509601	-21	kworker/u16:1+events_unbound	22:57:14	6
2015367	99	34	32,2	cyclictest	2473473	-21	kworker/u16:0+events_unbound	23:13:04	6
2015367	99	34	32,2	cyclictest	2362382	-21	kworker/u16:3+events_unbound	22:12:33	6
2015367	99	34	32,2	cyclictest	2230350	-21	kworker/u16:0+events_unbound	21:53:01	6
2015367	99	34	32,2	cyclictest	2214164	-21	kworker/u16:1+events_unbound	21:13:52	6
2015355	99	34	32,2	cyclictest	2735351	-21	kworker/u16:2+flush-8:0	00:27:32	4
2015355	99	34	32,2	cyclictest	2546801	-21	kworker/u16:2+events_unbound	00:03:57	4
2015355	99	34	32,2	cyclictest	2473473	-21	kworker/u16:0+events_unbound	23:13:12	4
2015355	99	34	31,3	cyclictest	2362382	-21	kworker/u16:3+events_unbound	22:30:24	4
2015367	99	33	31,2	cyclictest	2362382	-21	kworker/u16:3+events_unbound	22:08:37	6
2015367	99	33	31,2	cyclictest	1986037	-21	kworker/u16:0+events_unbound	19:19:18	6
2015367	99	33	30,2	cyclictest	2164478	-21	kworker/u16:2+events_unbound	21:15:00	6
2015355	99	33	31,2	cyclictest	2681374	-21	kworker/u16:5+events_unbound	00:31:24	4
2015355	99	33	31,2	cyclictest	2620548	-21	kworker/u16:0+events_unbound	00:13:04	4
2015355	99	33	31,2	cyclictest	2546801	-21	kworker/u16:2+events_unbound	23:21:56	4
2015355	99	33	31,2	cyclictest	2546801	-21	kworker/u16:2+events_unbound	23:21:56	4
2015355	99	33	31,2	cyclictest	2473473	-21	kworker/u16:0+events_unbound	23:07:12	4
2015355	99	33	31,2	cyclictest	2400012	-21	kworker/u16:5+events_unbound	22:27:44	4
2015355	99	33	31,2	cyclictest	2077365	-21	kworker/u16:0+events_unbound	20:20:05	4
2015367	99	32	30,2	cyclictest	2396787	-21	kworker/u16:1+events_unbound	22:28:41	6
2015367	99	32	30,2	cyclictest	2266670	-21	kworker/u16:5+events_unbound	21:31:46	6
2015367	99	32	30,2	cyclictest	2230350	-21	kworker/u16:0+events_unbound	21:23:18	6
2015355	99	32	30,2	cyclictest	2754775	-21	kworker/u16:0+events_unbound	00:38:56	4
2015355	99	32	30,2	cyclictest	2583442	-21	kworker/u16:3+events_unbound	23:40:12	4
2015355	99	32	30,2	cyclictest	2314234	-21	kworker/u16:2+events_unbound	21:49:33	4
2015355	99	32	30,2	cyclictest	2230350	-21	kworker/u16:0+events_unbound	21:28:00	4
2015355	99	32	30,2	cyclictest	2214164	-21	kworker/u16:1+events_unbound	21:13:22	4
2015355	99	32	29,2	cyclictest	2473473	-21	kworker/u16:0+events_unbound	22:59:00	4
2015367	99	31	29,2	cyclictest	2620548	-21	kworker/u16:0+events_unbound	00:00:36	6
2015367	99	31	29,2	cyclictest	1941842	-21	kworker/u16:2+events_unbound	19:32:18	6
2015355	99	31	29,2	cyclictest	2583442	-21	kworker/u16:3+events_unbound	23:26:49	4
2512623	2	30	0,1	chrt	0	-21	swapper/5	22:55:07	5
2015367	99	30	28,2	cyclictest	2583442	-21	kworker/u16:3+events_unbound	00:07:10	6
2015367	99	30	28,2	cyclictest	2400012	-21	kworker/u16:5+events_unbound	23:22:06	6
2015367	99	30	28,2	cyclictest	2400012	-21	kworker/u16:5+events_unbound	23:22:06	6
2015367	99	30	28,2	cyclictest	2338843	-21	kworker/u16:1+events_unbound	21:45:14	6
2015367	99	30	28,2	cyclictest	2164478	-21	kworker/u16:2+events_unbound	20:44:29	6
2015367	99	30	28,2	cyclictest	2077365	-21	kworker/u16:0+events_unbound	20:18:29	6
2015367	99	30	28,2	cyclictest	1301755	-21	kworker/u16:1+events_unbound	19:23:17	6
2015355	99	30	28,2	cyclictest	2681374	-21	kworker/u16:5+events_unbound	00:16:16	4
2015355	99	30	28,2	cyclictest	2530675	-21	kworker/u16:3+events_unbound	23:01:21	4
2015355	99	30	28,2	cyclictest	2400012	-21	kworker/u16:5+events_unbound	22:35:21	4
2015355	99	30	28,2	cyclictest	2230350	-21	kworker/u16:0+events_unbound	22:02:25	4
2015355	99	30	28,2	cyclictest	2230350	-21	kworker/u16:0+events_unbound	22:02:25	4
2015355	99	30	28,2	cyclictest	2230350	-21	kworker/u16:0+events_unbound	21:43:10	4
2015355	99	30	28,2	cyclictest	1941842	-21	kworker/u16:2+events_unbound	20:00:17	4
2015355	99	30	27,2	cyclictest	2400012	-21	kworker/u16:5+events_unbound	22:44:48	4
2322340	2	29	0,1	chrt	2322341	-21	kthreadcore	21:35:11	7
2015367	99	29	27,2	cyclictest	2681374	-21	kworker/u16:5+events_unbound	00:18:30	6
2015367	99	29	27,2	cyclictest	2473473	-21	kworker/u16:0+events_unbound	23:05:52	6
2015367	99	29	27,2	cyclictest	2400012	-21	kworker/u16:5+events_unbound	22:38:33	6
2015367	99	29	27,2	cyclictest	2314234	-21	kworker/u16:2+events_unbound	22:16:06	6
2015367	99	29	27,2	cyclictest	2015114	-21	kworker/u16:5+events_unbound	20:52:28	6
2015367	99	29	27,2	cyclictest	1941842	-21	kworker/u16:2+events_unbound	19:52:18	6
2015367	99	29	26,2	cyclictest	2052527	-21	kworker/u16:3+events_unbound	20:10:01	6
2015355	99	29	27,2	cyclictest	2583442	-21	kworker/u16:3+events_unbound	23:31:23	4
2015355	99	29	27,2	cyclictest	2473473	-21	kworker/u16:0+events_unbound	22:52:25	4
2015355	99	29	27,2	cyclictest	2262849	-21	kworker/u16:4+events_unbound	21:16:44	4
2015355	99	29	27,2	cyclictest	2230350	-21	kworker/u16:0+flush-8:0	21:39:47	4
2015355	99	29	26,2	cyclictest	2543731	-21	kworker/u16:1+events_unbound	23:34:48	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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