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 Dec 07, 2025 00:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2623215	2	60	48,8	sleep4	0	-21	swapper/4	03:22:28	4
2623120	2	58	40,15	sleep6	0	-21	swapper/6	03:21:10	6
2623140	2	55	45,7	sleep5	0	-21	swapper/5	03:21:25	5
2623564	99	48	0,46	cyclictest	3201959	-21	latency_hist	08:07:33	7
2622963	2	48	15,29	sleep7	0	-21	swapper/7	03:19:02	7
2623564	99	44	0,42	cyclictest	2929757	-21	latency_hist	05:52:33	7
2623559	99	41	39,2	cyclictest	3273776	-21	kworker/u16:5+events_unbound	08:48:04	5
2623564	99	40	32,7	cyclictest	2818751	-21	latency_hist	04:57:33	7
2623554	99	40	37,2	cyclictest	3130340	-21	kworker/u16:2+flush-8:0	08:32:48	4
2623559	99	39	36,2	cyclictest	2758112	-21	kworker/u16:1+flush-8:0	04:37:34	5
2623559	99	38	36,2	cyclictest	3130340	-21	kworker/u16:2+events_unbound	08:00:19	5
2623554	99	38	36,2	cyclictest	3130340	-21	kworker/u16:2+flush-8:0	07:55:28	4
2623554	99	37	35,2	cyclictest	2758112	-21	kworker/u16:1+events_unbound	05:31:16	4
2623554	99	37	35,2	cyclictest	2758112	-21	kworker/u16:1+events_unbound	05:21:45	4
2623554	99	37	34,2	cyclictest	2959976	-21	kworker/u16:4+flush-8:0	06:38:00	4
2623554	99	37	34,2	cyclictest	2959976	-21	kworker/u16:4+flush-8:0	06:38:00	4
2623559	99	36	34,2	cyclictest	2677638	-21	kworker/u16:1+flush-8:0	03:46:18	5
2623559	99	36	34,2	cyclictest	2633273	-21	kworker/u16:0+flush-8:0	03:34:17	5
2623554	99	36	34,2	cyclictest	2959976	-21	kworker/u16:4+events_unbound	07:35:18	4
2623554	99	36	34,2	cyclictest	2613093	-21	kworker/u16:2+events_unbound	03:24:59	4
2623559	99	35	33,2	cyclictest	2613093	-21	kworker/u16:2+events_unbound	03:48:44	5
2623559	99	35	32,2	cyclictest	3202142	-21	kworker/u16:4+flush-8:0	08:37:44	5
2623554	99	35	33,2	cyclictest	3132374	-21	kworker/u16:3+events_unbound	07:38:00	4
2623554	99	35	33,2	cyclictest	2798389	-21	kworker/u16:0+events_unbound	05:10:08	4
2623564	99	34	29,4	cyclictest	589235	-21	systemd-journal	06:04:16	7
2623559	99	34	32,2	cyclictest	2959976	-21	kworker/u16:4+events_unbound	07:32:20	5
2623554	99	34	32,2	cyclictest	3202142	-21	kworker/u16:4+flush-8:0	08:22:15	4
2623554	99	34	32,2	cyclictest	3182167	-21	kworker/u16:1+events_unbound	08:04:19	4
2623554	99	34	32,2	cyclictest	2633273	-21	kworker/u16:0+events_unbound	03:30:20	4
2623559	99	33	31,2	cyclictest	3201271	-21	kworker/u16:0+events_unbound	08:14:48	5
2623559	99	33	31,2	cyclictest	2909385	-21	kworker/u16:2+flush-8:0	06:30:35	5
2623559	99	33	31,2	cyclictest	2778338	-21	kworker/u16:2+events_unbound	04:40:33	5
2623554	99	33	31,2	cyclictest	2929514	-21	kworker/u16:0+flush-8:0	06:07:59	4
2623554	99	33	31,2	cyclictest	2929514	-21	kworker/u16:0+events_unbound	06:13:31	4
2623554	99	33	31,2	cyclictest	2758112	-21	kworker/u16:1+events_unbound	04:39:52	4
2623554	99	33	31,2	cyclictest	2677638	-21	kworker/u16:1+events_unbound	03:49:56	4
2623554	99	33	31,2	cyclictest	2633488	-21	kworker/u16:4+flush-8:0	04:04:44	4
2623554	99	33	31,2	cyclictest	2633488	-21	kworker/u16:4+events_unbound	04:26:09	4
2623554	99	33	31,2	cyclictest	2633488	-21	kworker/u16:4+events_unbound	04:16:13	4
2623564	99	32	25,6	cyclictest	589235	-21	systemd-journal	05:25:00	7
2623561	99	32	30,2	cyclictest	2677638	-21	kworker/u16:1+flush-8:0	04:12:33	6
2623559	99	32	30,2	cyclictest	3232220	-21	kworker/u16:0+events_unbound	08:23:24	5
2623559	99	32	30,2	cyclictest	3130340	-21	kworker/u16:2+events_unbound	07:45:18	5
2623559	99	32	30,2	cyclictest	2909385	-21	kworker/u16:2+events_unbound	06:16:36	5
2623559	99	32	30,2	cyclictest	2888500	-21	kworker/u16:3+events_unbound	05:57:35	5
2623559	99	31	29,2	cyclictest	3202142	-21	kworker/u16:4+events_unbound	08:34:21	5
2623559	99	31	29,2	cyclictest	3130340	-21	kworker/u16:2+events_unbound	07:55:16	5
2623559	99	31	29,2	cyclictest	2929514	-21	kworker/u16:0+events_unbound	05:53:56	5
2623559	99	31	29,2	cyclictest	2909385	-21	kworker/u16:2+events_unbound	06:45:49	5
2623559	99	31	29,2	cyclictest	2909385	-21	kworker/u16:2+events_unbound	05:39:36	5
2623559	99	31	28,2	cyclictest	3070887	-21	kworker/u16:3+events_unbound	07:02:36	5
2623554	99	31	29,2	cyclictest	3201271	-21	kworker/u16:0+flush-8:0	08:08:20	4
2623554	99	31	29,2	cyclictest	3201271	-21	kworker/u16:0+flush-8:0	08:08:20	4
2623554	99	31	29,2	cyclictest	3130340	-21	kworker/u16:2+events_unbound	08:31:31	4
2623554	99	31	29,2	cyclictest	2888500	-21	kworker/u16:3+events_unbound	05:49:36	4
2623554	99	31	29,2	cyclictest	2758112	-21	kworker/u16:1+events_unbound	05:27:25	4
2623564	99	30	24,5	cyclictest	589235	-21	systemd-journal	04:06:16	7
2623559	99	30	28,2	cyclictest	2929514	-21	kworker/u16:0+events_unbound	06:37:13	5
2623559	99	30	28,2	cyclictest	2929514	-21	kworker/u16:0+events_unbound	06:21:45	5
2623559	99	30	28,2	cyclictest	2888500	-21	kworker/u16:3+flush-8:0	05:35:40	5
2623559	99	30	28,2	cyclictest	2758112	-21	kworker/u16:1+events_unbound	05:06:44	5
2623559	99	30	28,2	cyclictest	2633273	-21	kworker/u16:0+flush-8:0	03:25:13	5
2623559	99	30	27,2	cyclictest	2613093	-21	kworker/u16:2+flush-8:0	04:07:44	5
2623554	99	30	28,2	cyclictest	2929514	-21	kworker/u16:0+flush-8:0	06:43:31	4
2623554	99	30	28,2	cyclictest	2909385	-21	kworker/u16:2+events_unbound	07:15:16	4
2623554	99	30	28,2	cyclictest	2758112	-21	kworker/u16:1+events_unbound	05:02:13	4
2623554	99	30	28,2	cyclictest	2758112	-21	kworker/u16:1+events_unbound	04:51:24	4
2623554	99	30	28,2	cyclictest	2633273	-21	kworker/u16:0+events_unbound	03:36:09	4
2623559	99	29	27,2	cyclictest	3132374	-21	kworker/u16:3+events_unbound	07:48:33	5
2623559	99	29	27,2	cyclictest	3130340	-21	kworker/u16:2+events_unbound	08:32:16	5
2623559	99	29	27,2	cyclictest	2959976	-21	kworker/u16:4+events_unbound	07:25:20	5
2623559	99	29	27,2	cyclictest	2959976	-21	kworker/u16:4+events_unbound	07:25:20	5
2623559	99	29	27,2	cyclictest	2959976	-21	kworker/u16:4+events_unbound	06:11:24	5
2623559	99	29	27,2	cyclictest	2929514	-21	kworker/u16:0+events_unbound	07:21:45	5
2623559	99	29	27,2	cyclictest	2888500	-21	kworker/u16:3+events_unbound	05:46:32	5
2623559	99	29	27,2	cyclictest	2838977	-21	kworker/u16:4+flush-8:0	05:08:23	5
2623559	99	29	27,2	cyclictest	2758112	-21	kworker/u16:1+events_unbound	05:52:11	5
2623554	99	29	27,2	cyclictest	3262766	-21	kworker/u16:1+events_unbound	08:40:38	4
2623554	99	29	27,2	cyclictest	2929514	-21	kworker/u16:0+events_unbound	07:22:34	4
2623554	99	29	27,2	cyclictest	2929514	-21	kworker/u16:0+events_unbound	07:22:34	4
2623554	99	29	27,2	cyclictest	2929514	-21	kworker/u16:0+events_unbound	06:32:24	4
2623561	99	28	24,3	cyclictest	3130340	-21	kworker/u16:2+flush-8:0	07:32:59	6
2623559	99	28	26,2	cyclictest	3201271	-21	kworker/u16:0+flush-8:0	08:09:44	5
2623559	99	28	26,2	cyclictest	3201271	-21	kworker/u16:0+flush-8:0	08:09:44	5
2623559	99	28	26,2	cyclictest	2909385	-21	kworker/u16:2+events_unbound	07:09:52	5
2623559	99	28	26,2	cyclictest	2909385	-21	kworker/u16:2+events_unbound	06:49:40	5
2623559	99	28	26,2	cyclictest	2798389	-21	kworker/u16:0+events_unbound	05:17:00	5
2623559	99	28	26,2	cyclictest	2778338	-21	kworker/u16:2+events_unbound	04:58:53	5
2623559	99	28	26,2	cyclictest	2778338	-21	kworker/u16:2+events_unbound	04:57:20	5
2623559	99	28	26,2	cyclictest	2647615	-21	kworker/u16:3+events_unbound	03:38:36	5
2623559	99	28	26,2	cyclictest	2633488	-21	kworker/u16:4+flush-8:0	04:25:48	5
2623559	99	28	26,2	cyclictest	2633488	-21	kworker/u16:4+events_unbound	04:14:04	5
2623554	99	28	26,2	cyclictest	3202142	-21	kworker/u16:4+events_unbound	08:26:03	4
2623554	99	28	26,2	cyclictest	3130340	-21	kworker/u16:2+flush-8:0	08:48:00	4
2623554	99	28	26,2	cyclictest	2929514	-21	kworker/u16:0+flush-8:0	06:33:31	4
2623554	99	28	26,2	cyclictest	2798389	-21	kworker/u16:0+events_unbound	05:38:40	4
2623554	99	28	26,2	cyclictest	2798389	-21	kworker/u16:0+events_unbound	05:17:21	4
2623554	99	28	26,2	cyclictest	2768245	-21	kworker/u16:0+events_unbound	04:34:20	4
2623554	99	28	26,2	cyclictest	2677638	-21	kworker/u16:1+events_unbound	03:46:04	4
2623559	99	27	25,2	cyclictest	3132374	-21	kworker/u16:3+events_unbound	07:41:47	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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