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 Sun Jun 14, 2026 12:43:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3120751	2	57	47,7	sleep5	0	-21	swapper/5	07:01:42	5
3120946	2	54	44,7	sleep4	0	-21	swapper/4	07:04:30	4
3121333	99	47	45,2	cyclictest	3630335	-21	kworker/u16:5+flush-8:0	11:02:27	5
3121335	99	42	40,2	cyclictest	3856689	-21	kworker/u16:2+events_unbound	12:34:31	6
3121335	99	41	39,2	cyclictest	3376590	-21	kworker/u16:1+events_unbound	10:02:44	6
3121333	99	40	35,2	cyclictest	3728603	-21	kworker/u16:1+flush-8:0	11:56:17	5
3120780	2	40	4,30	sleep7	0	-21	swapper/7	07:02:08	7
3121335	99	39	37,2	cyclictest	3534018	-21	kworker/u16:1+events_unbound	10:43:27	6
3121335	99	39	37,2	cyclictest	3428267	-21	kworker/u16:0+events_unbound	10:21:00	6
3121335	99	39	37,2	cyclictest	3376887	-21	kworker/u16:4+events_unbound	11:27:39	6
3121335	99	39	37,2	cyclictest	3279120	-21	kworker/u16:0+events_unbound	08:36:29	6
3121335	99	38	37,1	cyclictest	3428267	-21	kworker/u16:0+flush-8:0	09:45:58	6
3121335	99	38	36,2	cyclictest	3728603	-21	kworker/u16:1+events_unbound	11:59:32	6
3121335	99	38	36,2	cyclictest	3630335	-21	kworker/u16:5+events_unbound	11:15:36	6
3121335	99	38	36,2	cyclictest	3355817	-21	kworker/u16:0+flush-8:0	09:07:07	6
3121335	99	37	35,2	cyclictest	3777048	-21	kworker/u16:3+events_unbound	12:01:59	6
3121335	99	37	35,2	cyclictest	3534018	-21	kworker/u16:1+events_unbound	10:17:51	6
3121333	99	37	35,2	cyclictest	3376590	-21	kworker/u16:1+flush-8:0	09:36:56	5
3121335	99	36	34,2	cyclictest	3376590	-21	kworker/u16:1+flush-8:0	09:27:15	6
3121335	99	36	34,2	cyclictest	3154037	-21	kworker/u16:3+flush-8:0	08:45:59	6
3121335	99	35	33,2	cyclictest	3630285	-21	kworker/u16:2+flush-8:0	11:06:39	6
3121335	99	35	33,2	cyclictest	3376887	-21	kworker/u16:4+flush-8:0	11:21:22	6
3121335	99	35	33,2	cyclictest	3376590	-21	kworker/u16:1+events_unbound	09:40:33	6
3121333	99	35	30,4	cyclictest	3153850	-21	kworker/u16:0+flush-8:0	07:25:58	5
3121335	99	34	32,2	cyclictest	3668955	-21	kworker/u16:0+events_unbound	11:55:12	6
3121335	99	34	32,2	cyclictest	3630285	-21	kworker/u16:2+events_unbound	11:17:56	6
3121335	99	34	32,2	cyclictest	3534018	-21	kworker/u16:1+events_unbound	10:32:44	6
3121335	99	34	32,2	cyclictest	3376887	-21	kworker/u16:4+events_unbound	10:29:01	6
3121335	99	34	32,2	cyclictest	3376887	-21	kworker/u16:4+events_unbound	09:35:36	6
3121335	99	34	32,2	cyclictest	3376590	-21	kworker/u16:1+flush-8:0	09:11:36	6
3121335	99	34	32,2	cyclictest	3376590	-21	kworker/u16:1+events_unbound	09:52:40	6
3121333	99	34	32,2	cyclictest	3298196	-21	kworker/u16:2+flush-8:0	09:10:58	5
3121335	99	33	31,2	cyclictest	3728603	-21	kworker/u16:1+events_unbound	11:45:16	6
3121335	99	33	31,2	cyclictest	3668955	-21	kworker/u16:0+flush-8:0	11:32:52	6
3121335	99	33	31,2	cyclictest	3428267	-21	kworker/u16:0+events_unbound	09:48:44	6
3121335	99	33	31,2	cyclictest	3058566	-21	kworker/u16:1+events_unbound	07:20:53	6
3121335	99	33	30,3	cyclictest	3668955	-21	kworker/u16:0+events_unbound	11:49:44	6
3121333	99	33	30,2	cyclictest	3428267	-21	kworker/u16:0+events_unbound	09:46:01	5
3121335	99	32	30,2	cyclictest	3668955	-21	kworker/u16:0+events_unbound	12:18:04	6
3121335	99	32	30,2	cyclictest	3668955	-21	kworker/u16:0+events_unbound	12:18:04	6
3121335	99	32	30,2	cyclictest	3630335	-21	kworker/u16:5+events_unbound	10:57:51	6
3121335	99	32	30,2	cyclictest	3548246	-21	kworker/u16:3+events_unbound	10:55:24	6
3121335	99	32	30,2	cyclictest	3428267	-21	kworker/u16:0+events_unbound	09:58:48	6
3121335	99	32	30,2	cyclictest	3376887	-21	kworker/u16:4+events_unbound	11:05:36	6
3121335	99	32	30,2	cyclictest	3376887	-21	kworker/u16:4+events_unbound	10:12:15	6
3121335	99	32	30,2	cyclictest	3298196	-21	kworker/u16:2+events_unbound	09:19:48	6
3121335	99	31	29,2	cyclictest	3668955	-21	kworker/u16:0+events_unbound	12:23:28	6
3121335	99	31	29,2	cyclictest	3668955	-21	kworker/u16:0+events_unbound	11:38:12	6
3121335	99	31	29,2	cyclictest	3668955	-21	kworker/u16:0+events_unbound	11:38:12	6
3121335	99	31	29,2	cyclictest	3548246	-21	kworker/u16:3+events_unbound	10:48:16	6
3121335	99	31	29,2	cyclictest	3428267	-21	kworker/u16:0+events_unbound	10:09:27	6
3121335	99	31	29,2	cyclictest	3376590	-21	kworker/u16:1+events_unbound	09:23:29	6
3121333	99	31	28,2	cyclictest	3376590	-21	kworker/u16:1+events_unbound	10:03:09	5
3121330	99	31	29,2	cyclictest	3548246	-21	kworker/u16:3+flush-8:0	10:56:19	4
3121339	99	30	26,3	cyclictest	124	-21	kswapd0	10:41:12	7
3121335	99	30	28,2	cyclictest	3809550	-21	kworker/u16:1+events_unbound	12:29:20	6
3121335	99	30	28,2	cyclictest	3788748	-21	kworker/u16:4+events_unbound	12:10:27	6
3121335	99	30	28,2	cyclictest	3154037	-21	kworker/u16:3+events_unbound	08:07:08	6
3121333	99	30	28,2	cyclictest	3376887	-21	kworker/u16:4+events_unbound	11:15:53	5
3121330	99	30	28,2	cyclictest	3668955	-21	kworker/u16:0+events_unbound	12:16:19	4
3121330	99	30	28,2	cyclictest	3668955	-21	kworker/u16:0+events_unbound	12:16:19	4
3121335	99	29	27,2	cyclictest	3279120	-21	kworker/u16:0+events_unbound	08:54:08	6
3121333	99	29	27,2	cyclictest	3298196	-21	kworker/u16:2+flush-8:0	09:25:58	5
3121333	99	29	27,2	cyclictest	3153850	-21	kworker/u16:0+events_unbound	07:31:19	5
3121333	99	29	27,2	cyclictest	3153850	-21	kworker/u16:0+events_unbound	07:31:19	5
3121333	99	29	26,2	cyclictest	3376887	-21	kworker/u16:4+flush-8:0	10:35:58	5
3121330	99	29	25,3	cyclictest	3548246	-21	kworker/u16:3+flush-8:0	10:45:53	4
3521828	2	28	0,1	chrt	3521829	-21	ssh	10:11:43	7
3121335	99	28	26,2	cyclictest	3668955	-21	kworker/u16:0+events_unbound	12:12:40	6
3121335	99	28	25,2	cyclictest	3154037	-21	kworker/u16:3+flush-8:0	08:26:08	6
3121333	99	28	26,2	cyclictest	3668955	-21	kworker/u16:0+events_unbound	12:21:27	5
3121333	99	28	26,2	cyclictest	3668955	-21	kworker/u16:0+events_unbound	11:16:19	5
3121333	99	28	26,2	cyclictest	3298196	-21	kworker/u16:2+events_unbound	09:17:37	5
3121339	99	27	25,1	cyclictest	3637553	-21	ssh	11:01:17	7
3121339	99	27	22,4	cyclictest	3713011	-21	seq	11:31:18	7
3121333	99	27	24,2	cyclictest	3788748	-21	kworker/u16:4+events_unbound	12:11:08	5
3121333	99	26	24,2	cyclictest	3428267	-21	kworker/u16:0+flush-8:0	10:16:16	5
3121330	99	26	24,2	cyclictest	3376887	-21	kworker/u16:4+flush-8:0	10:11:27	4
3121330	99	26	24,2	cyclictest	3376887	-21	kworker/u16:4+events_unbound	10:46:23	4
3121339	99	25	0,23	cyclictest	3403797	-21	ls	09:25:58	7
3121335	99	25	23,2	cyclictest	3534018	-21	kworker/u16:1+events_unbound	10:36:36	6
3121335	99	25	23,2	cyclictest	3279120	-21	kworker/u16:0+events_unbound	08:35:46	6
3121335	99	25	23,2	cyclictest	3230862	-21	kworker/u16:4+events_unbound	08:14:08	6
3121333	99	25	23,2	cyclictest	3534018	-21	kworker/u16:1+flush-8:0	10:51:19	5
3121333	99	25	23,2	cyclictest	3376887	-21	kworker/u16:4+events_unbound	11:06:27	5
3121333	99	25	23,2	cyclictest	3154037	-21	kworker/u16:3+flush-8:0	09:11:13	5
3121333	99	25	22,2	cyclictest	3298196	-21	kworker/u16:2+flush-8:0	09:01:17	5
3121330	99	25	22,2	cyclictest	2375465	-21	kworker/u16:2+flush-8:0	07:16:11	4
3121335	99	24	22,2	cyclictest	3058566	-21	kworker/u16:1+flush-8:0	07:35:08	6
3121335	99	24	22,2	cyclictest	3058566	-21	kworker/u16:1+flush-8:0	07:35:08	6
3121335	99	24	22,2	cyclictest	3058566	-21	kworker/u16:1+events_unbound	07:59:09	6
3121333	99	24	22,2	cyclictest	3376590	-21	kworker/u16:1+events_unbound	10:06:13	5
3121333	99	24	21,2	cyclictest	3548246	-21	kworker/u16:3+flush-8:0	10:40:59	5
3121333	99	24	21,2	cyclictest	3428267	-21	kworker/u16:0+events_unbound	09:40:59	5
3121333	99	24	20,2	cyclictest	3083238	-21	kworker/u16:5+flush-8:0	07:10:59	5
3121330	99	24	22,2	cyclictest	3728603	-21	kworker/u16:1+events_unbound	11:51:10	4
3121339	99	23	22,0	cyclictest	0	-21	swapper/7	12:12:42	7
3121339	99	23	18,4	cyclictest	635	-21	systemd-journal	12:10:57	7
3121339	99	23	18,4	cyclictest	635	-21	systemd-journal	07:25:58	7
3121335	99	23	21,2	cyclictest	3154037	-21	kworker/u16:3+events_unbound	07:38:09	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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