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 Sat May 02, 2026 00:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3165919	2	55	44,8	sleep4	0	-21	swapper/4	19:08:43	4
3165634	2	52	42,7	sleep5	0	-21	swapper/5	19:04:43	5
3166235	99	44	39,4	cyclictest	3284927	-21	latency_hist	20:08:52	7
3166220	99	41	39,2	cyclictest	3520279	-21	kworker/u16:0+events_unbound	22:23:51	4
3159986	2	41	2,32	sleep7	0	-21	swapper/7	19:04:13	7
3166233	99	40	38,2	cyclictest	3390350	-21	kworker/u16:2+events_unbound	00:27:29	6
3166233	99	40	38,2	cyclictest	3266145	-21	kworker/u16:0+events_unbound	21:46:49	6
3166233	99	38	36,2	cyclictest	3520279	-21	kworker/u16:0+events_unbound	22:35:29	6
3166233	99	38	35,2	cyclictest	3390350	-21	kworker/u16:2+events_unbound	21:59:06	6
3166233	99	37	35,2	cyclictest	3893568	-21	kworker/u16:4+events_unbound	00:38:36	6
3166233	99	37	35,2	cyclictest	3893568	-21	kworker/u16:4+events_unbound	00:38:36	6
3166233	99	37	35,2	cyclictest	3797760	-21	kworker/u16:0+events_unbound	00:07:45	6
3166233	99	37	35,2	cyclictest	3472188	-21	kworker/u16:3+events_unbound	23:06:29	6
3166233	99	37	35,2	cyclictest	3472188	-21	kworker/u16:3+events_unbound	22:33:25	6
3166233	99	37	35,2	cyclictest	3472188	-21	kworker/u16:3+events_unbound	22:33:25	6
3166233	99	37	35,2	cyclictest	3390350	-21	kworker/u16:2+events_unbound	21:49:29	6
3166233	99	37	35,2	cyclictest	3390350	-21	kworker/u16:2+events_unbound	21:49:29	6
3166233	99	37	34,2	cyclictest	3208224	-21	kworker/u16:1+events_unbound	20:08:54	6
3166233	99	36	34,2	cyclictest	3723541	-21	kworker/u16:3+events_unbound	23:26:29	6
3166233	99	36	34,2	cyclictest	3472188	-21	kworker/u16:3+events_unbound	23:11:05	6
3166233	99	36	34,2	cyclictest	3472188	-21	kworker/u16:3+events_unbound	23:11:05	6
3166233	99	36	34,2	cyclictest	3390350	-21	kworker/u16:2+events_unbound	23:33:17	6
3166233	99	36	34,2	cyclictest	3390350	-21	kworker/u16:2+events_unbound	22:53:33	6
3166233	99	36	34,2	cyclictest	3390350	-21	kworker/u16:2+events_unbound	22:41:09	6
3166233	99	36	34,2	cyclictest	3266145	-21	kworker/u16:0+events_unbound	21:17:51	6
3166233	99	36	30,6	cyclictest	3472188	-21	kworker/u16:3+events_unbound	22:25:29	6
3166233	99	35	33,2	cyclictest	3797760	-21	kworker/u16:0+events_unbound	00:20:17	6
3166233	99	35	33,2	cyclictest	3472188	-21	kworker/u16:3+events_unbound	22:12:33	6
3166233	99	35	33,2	cyclictest	3412067	-21	kworker/u16:1+events_unbound	21:33:49	6
3166233	99	35	33,2	cyclictest	3390350	-21	kworker/u16:2+events_unbound	23:37:33	6
3166233	99	34	32,2	cyclictest	3737526	-21	kworker/u16:4+events_unbound	23:55:18	6
3166233	99	34	32,2	cyclictest	3710888	-21	kworker/u16:1+events_unbound	23:16:58	6
3166233	99	34	32,2	cyclictest	3472188	-21	kworker/u16:3+events_unbound	22:54:26	6
3166233	99	34	32,2	cyclictest	3472188	-21	kworker/u16:3+events_unbound	22:18:17	6
3166233	99	34	32,2	cyclictest	3266145	-21	kworker/u16:0+events_unbound	21:23:41	6
3166233	99	34	32,2	cyclictest	3266145	-21	kworker/u16:0+events_unbound	19:59:53	6
3166233	99	33	31,2	cyclictest	3797760	-21	kworker/u16:0+events_unbound	00:01:14	6
3166233	99	33	31,2	cyclictest	3472188	-21	kworker/u16:3+flush-8:0	22:04:25	6
3166233	99	33	31,2	cyclictest	3412067	-21	kworker/u16:1+events_unbound	21:35:46	6
3166233	99	33	31,2	cyclictest	3266145	-21	kworker/u16:0+events_unbound	21:11:34	6
3166233	99	32	30,2	cyclictest	3833537	-21	kworker/u16:3+events_unbound	00:31:06	6
3166233	99	32	30,2	cyclictest	3472188	-21	kworker/u16:3+flush-8:0	22:19:29	6
3166233	99	32	30,2	cyclictest	3472188	-21	kworker/u16:3+events_unbound	22:44:53	6
3166225	99	32	30,2	cyclictest	3472188	-21	kworker/u16:3+events_unbound	22:34:06	5
3166220	99	32	30,2	cyclictest	3390350	-21	kworker/u16:2+flush-8:0	22:54:07	4
3166233	99	31	29,2	cyclictest	3797760	-21	kworker/u16:0+events_unbound	00:17:45	6
3166233	99	31	29,2	cyclictest	3737526	-21	kworker/u16:4+events_unbound	23:46:50	6
3166233	99	31	29,2	cyclictest	3520279	-21	kworker/u16:0+events_unbound	23:01:48	6
3166233	99	31	29,2	cyclictest	3472188	-21	kworker/u16:3+events_unbound	21:57:22	6
3166233	99	31	28,2	cyclictest	3390350	-21	kworker/u16:2+events_unbound	23:43:45	6
3166233	99	31	28,2	cyclictest	3266145	-21	kworker/u16:0+events_unbound	20:39:02	6
3166233	99	30	28,2	cyclictest	3797760	-21	kworker/u16:0+events_unbound	00:11:32	6
3166233	99	30	28,2	cyclictest	3390350	-21	kworker/u16:2+events_unbound	23:51:40	6
3166233	99	30	28,2	cyclictest	3266145	-21	kworker/u16:0+events_unbound	21:39:37	6
3166225	99	30	28,2	cyclictest	3520279	-21	kworker/u16:0+events_unbound	22:09:17	5
3166235	99	29	26,2	cyclictest	124	-21	kswapd0	00:33:23	7
3166233	99	29	27,2	cyclictest	3723541	-21	kworker/u16:3+events_unbound	23:22:34	6
3166233	99	29	27,2	cyclictest	2441776	-21	kworker/u16:6+events_unbound	19:53:01	6
3166233	99	29	26,2	cyclictest	3208224	-21	kworker/u16:1+events_unbound	19:54:01	6
3166225	99	29	27,2	cyclictest	3412067	-21	kworker/u16:1+flush-8:0	21:24:07	5
3166220	99	29	27,2	cyclictest	3472188	-21	kworker/u16:3+events_unbound	21:44:22	4
3166233	99	28	26,2	cyclictest	3390350	-21	kworker/u16:2+events_unbound	21:27:46	6
3166233	99	28	26,2	cyclictest	2441776	-21	kworker/u16:6+events_unbound	20:44:13	6
3166233	99	28	26,2	cyclictest	2441776	-21	kworker/u16:6+events_unbound	20:17:01	6
3166233	99	28	25,2	cyclictest	2441776	-21	kworker/u16:6+events_unbound	20:33:53	6
3166225	99	28	26,2	cyclictest	3472188	-21	kworker/u16:3+flush-8:0	23:04:03	5
3166225	99	28	26,2	cyclictest	3472188	-21	kworker/u16:3+events_unbound	21:39:15	5
3166225	99	28	26,2	cyclictest	3208224	-21	kworker/u16:1+events_unbound	19:54:05	5
3166220	99	28	27,1	cyclictest	3520279	-21	kworker/u16:0+events_unbound	22:25:50	4
3156825	2	28	18,7	sleep6	0	-21	swapper/6	19:03:56	6
3166233	99	27	25,2	cyclictest	3266145	-21	kworker/u16:0+events_unbound	21:06:02	6
3166233	99	27	25,2	cyclictest	3266145	-21	kworker/u16:0+events_unbound	20:23:02	6
3166233	99	27	25,2	cyclictest	3266145	-21	kworker/u16:0+events_unbound	20:07:01	6
3166225	99	27	25,2	cyclictest	3723541	-21	kworker/u16:3+events_unbound	23:39:05	5
3166225	99	27	25,2	cyclictest	3520279	-21	kworker/u16:0+events_unbound	22:49:17	5
3166220	99	27	26,1	cyclictest	3472188	-21	kworker/u16:3+events_unbound	22:51:48	4
3166220	99	27	24,3	cyclictest	3390350	-21	kworker/u16:2+flush-8:0	23:03:52	4
3166235	99	26	23,2	cyclictest	909	-21	in:imjournal	00:08:51	7
3166233	99	26	24,2	cyclictest	3266145	-21	kworker/u16:0+events_unbound	21:03:02	6
3166233	99	26	24,2	cyclictest	2441776	-21	kworker/u16:6+events_unbound	20:52:02	6
3166233	99	26	24,2	cyclictest	2441776	-21	kworker/u16:6+events_unbound	19:10:01	6
3166225	99	26	24,2	cyclictest	3520279	-21	kworker/u16:0+events_unbound	22:04:05	5
3166220	99	26	24,2	cyclictest	3737526	-21	kworker/u16:4+events_unbound	00:03:00	4
3166220	99	26	24,2	cyclictest	2441776	-21	kworker/u16:6+flush-8:0	19:49:14	4
3166233	99	25	23,2	cyclictest	3103632	-21	kworker/u16:2+events_unbound	19:13:55	6
3166225	99	25	23,2	cyclictest	3390350	-21	kworker/u16:2+flush-8:0	00:14:07	5
3166225	99	25	22,1	cyclictest	68	1	rcuog/4	22:48:23	5
3166220	99	25	23,2	cyclictest	3472188	-21	kworker/u16:3+flush-8:0	23:09:25	4
3166220	99	25	23,2	cyclictest	3472188	-21	kworker/u16:3+flush-8:0	23:09:25	4
3166233	99	24	22,2	cyclictest	3266145	-21	kworker/u16:0+events_unbound	20:55:50	6
3166233	99	24	21,2	cyclictest	3208224	-21	kworker/u16:1+flush-8:0	19:44:02	6
3166220	99	24	21,2	cyclictest	3103632	-21	kworker/u16:2+events_unbound	19:13:57	4
3166235	99	23	18,4	cyclictest	3265762	-21	latency_hist	19:58:52	7
3166233	99	23	21,2	cyclictest	3208224	-21	kworker/u16:1+events_unbound	19:39:49	6
3166233	99	23	21,2	cyclictest	2441776	-21	kworker/u16:6+events_unbound	20:31:01	6
3166233	99	23	21,2	cyclictest	2441776	-21	kworker/u16:6+events_unbound	19:36:02	6
3166225	99	23	21,2	cyclictest	3710888	-21	kworker/u16:1+flush-8:0	23:29:15	5
3166225	99	23	21,2	cyclictest	3175697	-21	kworker/u16:0+events_unbound	19:29:14	5
3166225	99	23	20,2	cyclictest	3797760	-21	kworker/u16:0+events_unbound	23:54:10	5
3166220	99	23	21,2	cyclictest	3797760	-21	kworker/u16:0+events_unbound	23:54:06	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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