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 Aug 24, 2026 12:43:50)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3270696	99	66	33,15	cyclictest	3438236	-21	kworker/1:0	11:55:19	1
3270696	99	63	59,2	cyclictest	0	-21	swapper/1	12:27:16	1
3270696	99	63	45,17	cyclictest	3410405	-21	kworker/1:0	11:05:16	1
3270696	99	62	46,15	cyclictest	3266839	-21	kworker/1:1	07:25:15	1
3270696	99	62	40,20	cyclictest	3834693	-1	kworker/1:1H	07:39:59	1
3270696	99	60	44,15	cyclictest	3385314	-21	kworker/1:1	10:43:45	1
3270696	99	60	42,17	cyclictest	3284180	-21	kworker/1:1	08:00:01	1
3270696	99	60	41,18	cyclictest	3834693	-1	kworker/1:1H	10:50:00	1
3270696	99	60	41,18	cyclictest	3307347	-21	kworker/1:0	09:10:15	1
3270696	99	60	40,18	cyclictest	3834693	-1	kworker/1:1H	10:20:00	1
3270696	99	59	42,16	cyclictest	3402315	-21	kworker/1:0	10:55:14	1
3270696	99	59	42,16	cyclictest	3266839	-21	kworker/1:1	07:15:12	1
3270696	99	59	41,17	cyclictest	3320421	-21	kworker/1:0	09:30:14	1
3270712	99	58	42,12	cyclictest	3299579	-1	kworker/3:0H	07:15:11	3
3270696	99	58	44,14	cyclictest	3354782	-21	kworker/1:0	10:05:14	1
3270696	99	58	43,14	cyclictest	3477261	-21	kworker/1:0	12:20:01	1
3270696	99	58	43,14	cyclictest	3477261	-21	kworker/1:0	12:20:01	1
3270696	99	58	43,14	cyclictest	3315615	-21	kworker/1:1	09:25:14	1
3270696	99	58	42,15	cyclictest	3467598	-21	kworker/1:0	12:04:15	1
3270696	99	58	41,16	cyclictest	3834693	-1	kworker/1:1H	08:25:16	1
3270696	99	58	41,16	cyclictest	3375499	-21	kworker/1:2	10:25:31	1
3270696	99	57	43,14	cyclictest	3498353	-21	kworker/1:2	12:37:46	1
3270696	99	57	43,14	cyclictest	3433079	-21	kworker/1:3	11:26:49	1
3270696	99	57	43,14	cyclictest	3289442	-21	kworker/1:3	08:10:14	1
3270696	99	57	42,14	cyclictest	3834693	-1	kworker/1:1H	09:01:14	1
3270696	99	57	42,14	cyclictest	3438236	-21	kworker/1:0	11:30:44	1
3270696	99	57	42,14	cyclictest	3410405	-21	kworker/1:0	11:03:46	1
3270696	99	57	42,14	cyclictest	3397746	-21	kworker/1:3	10:51:15	1
3270696	99	57	42,14	cyclictest	3315615	-21	kworker/1:1	09:20:00	1
3270696	99	57	42,14	cyclictest	3309491	-21	kworker/1:2	09:16:40	1
3270696	99	57	42,14	cyclictest	3301170	-21	kworker/1:2	08:55:16	1
3270696	99	57	42,14	cyclictest	3301170	-21	kworker/1:2	08:55:15	1
3270696	99	57	42,14	cyclictest	3301170	-21	kworker/1:2	08:50:00	1
3270696	99	57	41,15	cyclictest	3284180	-21	kworker/1:1	07:50:12	1
3270701	99	56	51,3	cyclictest	3288821	-21	kworker/2:2	08:33:40	2
3270696	99	56	42,14	cyclictest	3457912	-21	kworker/1:2	12:05:14	1
3270696	99	56	42,14	cyclictest	3457912	-21	kworker/1:2	12:05:14	1
3270696	99	56	42,14	cyclictest	3336687	-21	kworker/1:0	09:40:15	1
3270696	99	56	42,14	cyclictest	3298068	-21	kworker/1:0	08:40:01	1
3270696	99	56	42,14	cyclictest	3266839	-21	kworker/1:1	07:21:15	1
3270696	99	56	41,14	cyclictest	3834693	-1	kworker/1:1H	12:10:38	1
3270696	99	56	41,14	cyclictest	3472369	-21	kworker/1:1	12:15:17	1
3270696	99	56	41,14	cyclictest	3375499	-21	kworker/1:2	10:37:15	1
3270696	99	56	41,14	cyclictest	3354782	-21	kworker/1:0	10:14:55	1
3270696	99	56	41,14	cyclictest	3332134	-21	kworker/1:3	09:50:15	1
3270696	99	56	41,14	cyclictest	3328545	-21	kworker/1:2	09:35:00	1
3270696	99	56	41,14	cyclictest	3289442	-21	kworker/1:3	08:30:15	1
3270696	99	56	41,14	cyclictest	3284180	-21	kworker/1:1	08:05:15	1
3270696	99	56	40,15	cyclictest	3834693	-1	kworker/1:1H	07:40:12	1
3270696	99	56	40,15	cyclictest	3375499	-21	kworker/1:2	10:24:45	1
3270696	99	56	39,16	cyclictest	3301170	-21	kworker/1:2	08:50:00	1
3270696	99	56	35,20	cyclictest	3834693	-1	kworker/1:1H	08:35:04	1
3270712	99	55	50,3	cyclictest	3457176	-21	kworker/3:1	12:34:55	3
3270712	99	55	49,4	cyclictest	3299579	-1	kworker/3:0H	07:47:40	3
3270701	99	55	50,3	cyclictest	3334323	-21	kworker/2:2	10:06:01	2
3270696	99	55	51,3	cyclictest	3382942	-21	fschecks_time	10:30:15	1
3270696	99	55	41,14	cyclictest	3266839	-21	kworker/1:1	07:13:50	1
3270696	99	55	40,14	cyclictest	3834693	-1	kworker/1:1H	11:47:46	1
3270696	99	55	38,16	cyclictest	3492065	-21	kworker/1:0	12:33:15	1
3270712	99	54	49,3	cyclictest	3348010	-21	kworker/3:1	10:38:22	3
3270712	99	54	49,3	cyclictest	3299579	-1	kworker/3:0H	10:55:43	3
3270712	99	54	41,11	cyclictest	3299579	-1	kworker/3:0H	09:16:39	3
3270701	99	54	47,4	cyclictest	3685223	-1	kworker/2:2H	10:30:33	2
3270696	99	54	40,14	cyclictest	3278108	-21	kworker/1:3	07:30:15	1
3270696	99	54	39,14	cyclictest	3834693	-1	kworker/1:1H	10:04:59	1
3270696	99	54	39,14	cyclictest	3415908	-21	kworker/1:2	11:24:15	1
3270696	99	54	39,14	cyclictest	3278108	-21	kworker/1:3	07:50:00	1
3270696	99	54	38,15	cyclictest	3350284	-21	kworker/1:2	09:55:15	1
3270696	99	54	37,16	cyclictest	3415908	-21	kworker/1:2	11:15:15	1
3270712	99	53	48,3	cyclictest	3457176	-21	kworker/3:1	12:15:56	3
3270712	99	53	48,3	cyclictest	3299579	-1	kworker/3:0H	12:30:00	3
3270712	99	53	46,4	cyclictest	3299579	-1	kworker/3:0H	10:40:16	3
3270712	99	53	40,11	cyclictest	3299579	-1	kworker/3:0H	09:49:55	3
3270696	99	53	37,15	cyclictest	3410405	-21	kworker/1:0	11:10:06	1
3270696	99	53	36,16	cyclictest	3289442	-21	kworker/1:3	08:15:15	1
3270712	99	52	47,3	cyclictest	3299579	-1	kworker/3:0H	11:15:22	3
3270712	99	52	44,5	cyclictest	3299579	-1	kworker/3:0H	11:45:47	3
3270696	99	52	37,14	cyclictest	3452980	-21	kworker/1:1	11:50:00	1
3270696	99	52	37,14	cyclictest	3284180	-21	kworker/1:1	08:00:00	1
3270696	99	52	36,15	cyclictest	3438236	-21	kworker/1:0	11:35:20	1
3270696	99	52	36,15	cyclictest	3332134	-21	kworker/1:3	09:45:06	1
3270701	99	51	46,3	cyclictest	3685223	-1	kworker/2:2H	11:15:15	2
3270696	99	51	36,14	cyclictest	3307347	-21	kworker/1:0	09:05:29	1
3270696	99	51	33,17	cyclictest	3834693	-1	kworker/1:1H	11:40:15	1
3270688	99	51	46,3	cyclictest	3298066	-1	kworker/0:1H	09:40:33	0
3270688	99	51	46,3	cyclictest	3298066	-1	kworker/0:1H	08:43:15	0
3270712	99	50	44,4	cyclictest	3340983	-21	kworker/3:2	09:50:12	3
3270712	99	50	44,4	cyclictest	3299579	-1	kworker/3:0H	10:49:40	3
3270712	99	50	44,3	cyclictest	3299579	-1	kworker/3:0H	08:50:16	3
3270701	99	50	46,2	cyclictest	3334323	-21	kworker/2:2	09:45:57	2
3270701	99	50	45,3	cyclictest	3467838	-21	kworker/2:1	12:10:26	2
3270688	99	50	47,2	cyclictest	3487518	-21	kworker/0:2	12:30:06	0
3270688	99	50	47,2	cyclictest	3382416	-21	kworker/0:2	10:58:40	0
3270688	99	50	47,2	cyclictest	3368559	-21	kworker/0:0	10:18:39	0
3270688	99	50	47,2	cyclictest	3284183	-21	kworker/0:1	07:55:43	0
3270712	99	49	44,3	cyclictest	3299579	-1	kworker/3:0H	08:22:13	3
3270712	99	49	43,4	cyclictest	3290364	-21	kworker/3:0	09:26:21	3
3270712	99	49	41,6	cyclictest	3299579	-1	kworker/3:0H	10:10:13	3
3270712	99	49	35,2	cyclictest	3299579	-1	kworker/3:0H	08:00:15	3
3270701	99	49	44,3	cyclictest	3685223	-1	kworker/2:2H	12:18:50	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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