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 Sun Dec 14, 2025 12:43:47)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
626754	99	66	62,2	cyclictest	724723	-21	fschecks_time	12:20:13	1
626754	99	65	0,63	cyclictest	0	-21	swapper/1	08:59:58	1
626754	99	63	61,1	cyclictest	0	-21	swapper/1	08:04:14	1
626754	99	63	0,1	cyclictest	0	-21	swapper/1	08:27:21	1
626754	99	60	58,1	cyclictest	0	-21	swapper/1	09:52:24	1
626754	99	60	55,3	cyclictest	715454	-21	fschecks_time	11:50:13	1
626754	99	60	41,18	cyclictest	664395	-21	kworker/1:0	09:15:15	1
626754	99	60	36,23	cyclictest	1284072	-1	kworker/1:2H	11:20:00	1
626754	99	59	56,2	cyclictest	0	-21	swapper/1	10:35:13	1
626754	99	59	56,2	cyclictest	0	-21	swapper/1	10:35:12	1
626754	99	59	43,15	cyclictest	624884	-21	kworker/1:2	07:11:12	1
626754	99	59	42,16	cyclictest	676988	-21	kworker/1:0	10:15:26	1
626754	99	58	43,14	cyclictest	726214	-21	kworker/1:3	12:34:55	1
626754	99	58	43,14	cyclictest	713249	-21	kworker/1:2	12:10:00	1
626754	99	58	43,14	cyclictest	695759	-21	kworker/1:1	11:30:13	1
626754	99	58	43,14	cyclictest	656678	-21	kworker/1:2	09:09:55	1
626754	99	58	43,14	cyclictest	656678	-21	kworker/1:2	08:45:14	1
626754	99	58	42,15	cyclictest	695759	-21	kworker/1:1	10:50:15	1
626754	99	58	40,17	cyclictest	695759	-21	kworker/1:1	11:40:01	1
626754	99	58	40,17	cyclictest	676988	-21	kworker/1:0	10:10:13	1
626754	99	58	40,17	cyclictest	648943	-21	kworker/1:1	08:20:50	1
626754	99	58	34,22	cyclictest	1284072	-1	kworker/1:2H	07:35:00	1
626754	99	58	0,1	cyclictest	0	-21	swapper/1	10:20:43	1
626754	99	57	42,14	cyclictest	713249	-21	kworker/1:2	12:00:14	1
626754	99	57	42,14	cyclictest	713249	-21	kworker/1:2	11:55:14	1
626754	99	57	42,14	cyclictest	636563	-21	kworker/1:0	07:49:36	1
626754	99	57	42,14	cyclictest	636563	-21	kworker/1:0	07:40:01	1
626754	99	57	42,14	cyclictest	632604	-21	kworker/1:3	07:29:34	1
626754	99	57	42,14	cyclictest	1284072	-1	kworker/1:2H	08:30:41	1
626754	99	57	41,15	cyclictest	1284072	-1	kworker/1:2H	11:28:18	1
626754	99	57	39,17	cyclictest	640289	-21	kworker/1:3	08:05:13	1
626754	99	57	38,18	cyclictest	695759	-21	kworker/1:1	11:10:14	1
626754	99	57	31,15	cyclictest	655121	-21	kworker/1:1	08:40:14	1
626754	99	56	41,14	cyclictest	695759	-21	kworker/1:1	11:00:01	1
626754	99	56	41,14	cyclictest	656678	-21	kworker/1:2	09:00:14	1
626754	99	56	41,14	cyclictest	652043	-21	kworker/1:0	08:37:50	1
626754	99	56	41,14	cyclictest	624884	-21	kworker/1:2	07:15:06	1
626754	99	56	41,14	cyclictest	1284072	-1	kworker/1:2H	10:55:15	1
626754	99	56	41,14	cyclictest	1284072	-1	kworker/1:2H	09:25:18	1
626754	99	56	40,15	cyclictest	676988	-21	kworker/1:0	09:56:18	1
626754	99	56	40,15	cyclictest	644321	-21	kworker/1:0	08:10:15	1
626754	99	56	39,16	cyclictest	692660	-21	kworker/1:2	10:45:16	1
626754	99	56	38,17	cyclictest	640289	-21	kworker/1:3	07:50:13	1
626754	99	56	37,18	cyclictest	713249	-21	kworker/1:2	11:45:14	1
626754	99	55	40,14	cyclictest	728261	-21	kworker/1:0	12:35:17	1
626754	99	55	40,14	cyclictest	720950	-21	kworker/1:1	12:15:17	1
626754	99	55	40,14	cyclictest	706819	-21	kworker/1:2	11:23:18	1
626754	99	55	40,14	cyclictest	664395	-21	kworker/1:0	09:30:01	1
626754	99	55	40,14	cyclictest	656678	-21	kworker/1:2	08:50:16	1
626754	99	55	40,14	cyclictest	630383	-21	kworker/1:1	07:20:00	1
626754	99	55	39,15	cyclictest	676988	-21	kworker/1:0	10:00:14	1
626754	99	55	34,19	cyclictest	1284072	-1	kworker/1:2H	12:15:00	1
626767	99	54	49,3	cyclictest	650555	-21	kworker/3:1	10:43:43	3
626754	99	54	39,14	cyclictest	720950	-21	kworker/1:1	12:25:34	1
626754	99	54	39,14	cyclictest	676988	-21	kworker/1:0	10:30:22	1
626754	99	54	39,14	cyclictest	673890	-21	kworker/1:1	09:45:23	1
626754	99	54	39,14	cyclictest	664395	-21	kworker/1:0	09:35:15	1
626754	99	54	39,14	cyclictest	644321	-21	kworker/1:0	08:15:00	1
626754	99	54	39,14	cyclictest	1284072	-1	kworker/1:2H	10:25:14	1
626754	99	54	39,14	cyclictest	1284072	-1	kworker/1:2H	09:10:15	1
626754	99	54	38,15	cyclictest	692660	-21	kworker/1:2	10:40:31	1
626754	99	54	38,15	cyclictest	664395	-21	kworker/1:0	09:20:14	1
626767	99	53	48,3	cyclictest	650555	-21	kworker/3:1	09:21:25	3
626754	99	53	50,1	cyclictest	713294	-21	true	11:45:01	1
626754	99	53	37,15	cyclictest	634693	-21	kworker/1:1	07:35:14	1
626767	99	52	48,2	cyclictest	650555	-21	kworker/3:1	10:47:53	3
626754	99	52	37,14	cyclictest	695759	-21	kworker/1:1	11:05:01	1
626754	99	52	37,14	cyclictest	673890	-21	kworker/1:1	09:40:00	1
626749	99	52	46,3	cyclictest	7	-1	kworker/0:0H	11:15:01	0
626767	99	51	46,3	cyclictest	278	-1	kworker/3:2H	09:41:17	3
626760	99	51	48,2	cyclictest	720960	-21	kworker/2:0	12:09:53	2
626760	99	51	46,3	cyclictest	279	-1	kworker/2:3H	08:50:00	2
626754	99	51	36,14	cyclictest	640289	-21	kworker/1:3	07:59:39	1
626749	99	51	47,2	cyclictest	7	-1	kworker/0:0H	07:54:42	0
626767	99	50	45,3	cyclictest	703520	-21	kworker/3:2	11:35:21	3
626760	99	50	46,2	cyclictest	669276	-21	kworker/2:0	09:27:22	2
626749	99	50	46,2	cyclictest	706820	-21	kworker/0:1	11:46:18	0
626767	99	49	46,2	cyclictest	711687	-21	kworker/3:1	11:49:56	3
626760	99	49	45,2	cyclictest	633492	-21	kworker/2:1	07:45:06	2
626760	99	49	45,2	cyclictest	626519	-21	kworker/2:2	07:10:38	2
626760	99	49	44,3	cyclictest	279	-1	kworker/2:3H	12:30:29	2
626754	99	49	34,14	cyclictest	676988	-21	kworker/1:0	10:05:14	1
626749	99	49	44,3	cyclictest	7	-1	kworker/0:0H	09:27:55	0
626767	99	48	45,2	cyclictest	722542	-21	kworker/3:0	12:17:32	3
626767	99	48	45,2	cyclictest	650555	-21	kworker/3:1	10:25:19	3
626767	99	48	45,2	cyclictest	2758630	-21	kworker/3:2	07:33:18	3
626767	99	48	45,2	cyclictest	2758630	-21	kworker/3:2	07:19:32	3
626767	99	48	43,3	cyclictest	278	-1	kworker/3:2H	12:30:30	3
626767	99	48	42,4	cyclictest	278	-1	kworker/3:2H	08:50:00	3
626760	99	48	44,3	cyclictest	667716	-21	kworker/2:2	09:21:54	2
626760	99	48	44,2	cyclictest	633492	-21	kworker/2:1	08:05:46	2
626760	99	48	44,2	cyclictest	279	-1	kworker/2:3H	10:30:17	2
626749	99	48	45,2	cyclictest	688054	-21	kworker/0:1	10:49:48	0
626749	99	48	45,2	cyclictest	676985	-21	kworker/0:1	09:48:49	0
626767	99	47	44,2	cyclictest	711687	-21	kworker/3:1	12:14:55	3
626767	99	47	43,2	cyclictest	650555	-21	kworker/3:1	09:45:14	3
626767	99	47	42,3	cyclictest	278	-1	kworker/3:2H	11:45:01	3
626760	99	47	44,2	cyclictest	706826	-21	kworker/2:0	11:55:05	2
626760	99	47	44,2	cyclictest	692656	-21	kworker/2:2	11:13:43	2
626760	99	47	44,2	cyclictest	653582	-21	kworker/2:1	09:00:54	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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