OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #e, slot #3

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 rackeslot3.osadl.org (updated Mon Jan 12, 2026 00:43:49)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2384775	99	75	45,28	cyclictest	2450227	-21	kworker/1:3	22:55:12	1
2384775	99	75	43,29	cyclictest	1032281	-1	kworker/1:2H	20:00:14	1
2384775	99	75	43,29	cyclictest	1032281	-1	kworker/1:2H	20:00:14	1
2384775	99	73	38,33	cyclictest	2437059	-21	kworker/1:0	21:55:14	1
2384775	99	73	35,35	cyclictest	2469757	-21	kworker/1:0	00:00:14	1
2384775	99	71	36,32	cyclictest	2413648	-21	kworker/1:2	20:45:13	1
2384775	99	70	66,2	cyclictest	0	-21	swapper/1	22:31:09	1
2384775	99	70	40,27	cyclictest	1032281	-1	kworker/1:2H	22:15:14	1
2384775	99	70	39,29	cyclictest	1032281	-1	kworker/1:2H	19:35:05	1
2384775	99	70	37,31	cyclictest	2450227	-21	kworker/1:3	23:25:16	1
2384775	99	69	36,30	cyclictest	2439217	-21	kworker/1:3	22:05:13	1
2384775	99	69	35,32	cyclictest	1032281	-1	kworker/1:2H	20:10:15	1
2384775	99	68	42,24	cyclictest	1032281	-1	kworker/1:2H	19:50:14	1
2384775	99	68	36,30	cyclictest	2469757	-21	kworker/1:0	23:45:14	1
2384775	99	67	48,16	cyclictest	2431769	-21	latency	21:35:17	1
2384775	99	67	44,21	cyclictest	1032281	-1	kworker/1:2H	21:45:00	1
2384775	99	67	44,21	cyclictest	1032281	-1	kworker/1:2H	21:45:00	1
2384775	99	65	38,25	cyclictest	1032281	-1	kworker/1:2H	22:10:07	1
2384775	99	65	1,61	cyclictest	2386796	-21	cat	19:15:02	1
2384775	99	64	61,2	cyclictest	0	-21	swapper/1	22:21:45	1
2384775	99	64	40,22	cyclictest	2450227	-21	kworker/1:3	22:40:13	1
2384775	99	63	37,24	cyclictest	2445015	-21	kworker/1:2	22:25:22	1
2384775	99	63	37,24	cyclictest	1032281	-1	kworker/1:2H	20:25:00	1
2384775	99	63	36,25	cyclictest	2469757	-21	kworker/1:0	23:50:14	1
2384775	99	62	43,18	cyclictest	1032281	-1	kworker/1:2H	00:25:13	1
2384775	99	62	43,17	cyclictest	2420067	-21	kworker/1:0	21:05:13	1
2384775	99	62	42,18	cyclictest	2394628	-21	kworker/1:0	19:46:07	1
2384775	99	62	42,18	cyclictest	1032281	-1	kworker/1:2H	21:03:09	1
2384775	99	62	33,27	cyclictest	2432419	-21	kworker/1:1	21:45:15	1
2384775	99	61	58,2	cyclictest	0	-21	swapper/1	19:34:54	1
2384775	99	61	43,17	cyclictest	1032281	-1	kworker/1:2H	00:22:30	1
2384775	99	61	43,16	cyclictest	2469757	-21	kworker/1:0	00:10:32	1
2384775	99	61	43,16	cyclictest	1032281	-1	kworker/1:2H	21:17:10	1
2384775	99	61	42,18	cyclictest	2469757	-21	kworker/1:0	23:55:26	1
2384775	99	61	42,18	cyclictest	2450227	-21	kworker/1:3	22:50:14	1
2384775	99	61	42,18	cyclictest	2424710	-21	kworker/1:1	21:21:32	1
2384775	99	61	42,18	cyclictest	2401306	-21	kworker/1:1	20:05:10	1
2384775	99	61	42,17	cyclictest	2469757	-21	kworker/1:0	00:16:05	1
2384775	99	61	42,17	cyclictest	1032281	-1	kworker/1:2H	23:15:21	1
2384775	99	61	42,17	cyclictest	1032281	-1	kworker/1:2H	21:31:34	1
2384775	99	61	41,18	cyclictest	2450227	-21	kworker/1:3	23:10:13	1
2384775	99	61	39,20	cyclictest	2394628	-21	kworker/1:0	19:40:13	1
2384775	99	60	43,16	cyclictest	2423170	-21	kworker/1:2	21:11:36	1
2384775	99	60	42,17	cyclictest	2437059	-21	kworker/1:0	22:00:00	1
2384775	99	60	42,17	cyclictest	2410567	-21	kworker/1:1	20:26:27	1
2384775	99	60	42,17	cyclictest	1032281	-1	kworker/1:2H	00:30:06	1
2384775	99	60	42,16	cyclictest	1032281	-1	kworker/1:2H	23:39:04	1
2384775	99	59	41,17	cyclictest	2437059	-21	kworker/1:0	21:53:29	1
2384775	99	59	39,18	cyclictest	2394628	-21	kworker/1:0	19:55:15	1
2384775	99	59	37,20	cyclictest	2413648	-21	kworker/1:2	20:55:16	1
2384775	99	58	41,16	cyclictest	2413648	-21	kworker/1:2	20:36:34	1
2384775	99	58	41,16	cyclictest	2404404	-21	kworker/1:0	20:19:29	1
2384775	99	58	40,17	cyclictest	2466203	-21	kworker/1:1	23:30:13	1
2384775	99	58	40,16	cyclictest	2411191	-21	kworker/1:3	20:31:24	1
2384775	99	58	39,18	cyclictest	2428407	-21	kworker/1:3	21:26:03	1
2384775	99	58	39,18	cyclictest	1032281	-1	kworker/1:2H	20:54:09	1
2384775	99	57	40,16	cyclictest	2450227	-21	kworker/1:3	23:02:24	1
2384775	99	57	40,16	cyclictest	2450227	-21	kworker/1:3	23:02:23	1
2384775	99	57	40,16	cyclictest	2413648	-21	kworker/1:2	20:40:17	1
2384775	99	57	38,18	cyclictest	2450227	-21	kworker/1:3	23:08:33	1
2384775	99	57	38,17	cyclictest	2469757	-21	kworker/1:0	23:40:15	1
2384775	99	57	37,19	cyclictest	2450227	-21	kworker/1:3	22:35:28	1
2384775	99	56	38,17	cyclictest	2370766	-21	kworker/1:1	19:21:10	1
2384775	99	56	38,16	cyclictest	2450227	-21	kworker/1:3	23:20:05	1
2384775	99	56	37,18	cyclictest	1032281	-1	kworker/1:2H	00:05:42	1
2384775	99	56	34,19	cyclictest	2370766	-21	kworker/1:1	19:25:13	1
2384775	99	56	2,52	cyclictest	2386169	-21	cron	19:15:00	1
2384775	99	55	37,17	cyclictest	2450227	-21	kworker/1:3	22:46:50	1
2384779	99	54	50,2	cyclictest	1732022	-1	kworker/2:2H	19:46:21	2
2384775	99	54	34,19	cyclictest	2487062	-21	kworker/1:0	00:35:13	1
2384770	99	54	49,3	cyclictest	3267985	-1	kworker/0:1H	23:10:13	0
2384779	99	52	49,2	cyclictest	2440661	-21	kworker/2:0	22:36:10	2
2384779	99	51	46,3	cyclictest	2440661	-21	kworker/2:0	22:30:14	2
2384779	99	51	46,3	cyclictest	1732022	-1	kworker/2:2H	22:00:14	2
2384770	99	51	47,2	cyclictest	2421623	-21	kworker/0:1	21:09:59	0
2384784	99	50	45,3	cyclictest	1451643	-1	kworker/3:0H	23:15:13	3
2384779	99	49	36,11	cyclictest	1732022	-1	kworker/2:2H	20:55:16	2
2384779	99	48	45,2	cyclictest	1732022	-1	kworker/2:2H	22:16:51	2
2384779	99	48	44,3	cyclictest	2409039	-21	kworker/2:1	20:35:01	2
2384779	99	48	43,3	cyclictest	1732022	-1	kworker/2:2H	19:25:13	2
2384779	99	48	43,3	cyclictest	1732022	-1	kworker/2:2H	00:15:16	2
2384779	99	48	41,6	cyclictest	1732022	-1	kworker/2:2H	19:39:59	2
2384770	99	48	45,2	cyclictest	3267985	-1	kworker/0:1H	21:50:11	0
2384779	99	47	44,2	cyclictest	1732022	-1	kworker/2:2H	21:54:03	2
2384779	99	47	43,3	cyclictest	1732022	-1	kworker/2:2H	23:01:04	2
2384779	99	47	43,3	cyclictest	1732022	-1	kworker/2:2H	23:01:03	2
2384779	99	47	43,2	cyclictest	2440661	-21	kworker/2:0	22:10:11	2
2384784	99	46	40,3	cyclictest	1451643	-1	kworker/3:0H	23:20:14	3
2384779	99	46	43,2	cyclictest	2440661	-21	kworker/2:0	22:28:14	2
2384779	99	46	43,2	cyclictest	1732022	-1	kworker/2:2H	23:54:29	2
2384779	99	46	36,8	cyclictest	1732022	-1	kworker/2:2H	00:25:13	2
2384770	99	46	43,2	cyclictest	3267985	-1	kworker/0:1H	20:48:05	0
2384784	99	45	40,3	cyclictest	1451643	-1	kworker/3:0H	19:15:00	3
2384779	99	45	42,2	cyclictest	2420078	-21	kworker/2:0	21:49:34	2
2384779	99	45	42,2	cyclictest	2420078	-21	kworker/2:0	21:37:05	2
2384779	99	45	42,2	cyclictest	2409039	-21	kworker/2:1	20:52:14	2
2384779	99	45	42,2	cyclictest	1732022	-1	kworker/2:2H	23:38:32	2
2384779	99	45	42,2	cyclictest	1732022	-1	kworker/2:2H	21:30:10	2
2384779	99	45	41,3	cyclictest	2474398	-21	kworker/2:1	23:59:09	2
2384779	99	45	41,2	cyclictest	1732022	-1	kworker/2:2H	21:05:13	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:33