OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 Mon May 25, 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
2529133	2	59	47,8	sleep4	0	-21	swapper/4	07:02:26	4
2529133	2	59	47,8	sleep4	0	-21	swapper/4	07:02:26	4
2538590	99	52	50,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	11:22:44	6
2538588	99	47	44,2	cyclictest	2854909	-21	kworker/u16:1+flush-8:0	10:17:34	5
2538232	2	47	37,7	sleep5	0	-21	swapper/5	07:06:20	5
2538232	2	47	37,7	sleep5	0	-21	swapper/5	07:06:20	5
2538584	99	42	38,3	cyclictest	2273262	-21	kworker/u16:0+flush-8:0	07:32:18	4
2538584	99	42	38,3	cyclictest	2273262	-21	kworker/u16:0+flush-8:0	07:32:18	4
2538590	99	41	38,2	cyclictest	2609868	-21	kworker/u16:0+flush-8:0	08:42:18	6
2538018	2	40	3,31	sleep7	0	-21	swapper/7	07:03:17	7
2538018	2	40	3,31	sleep7	0	-21	swapper/7	07:03:17	7
2538598	99	39	35,3	cyclictest	124	-21	kswapd0	11:12:18	7
2538584	99	39	37,2	cyclictest	2854909	-21	kworker/u16:1+flush-8:0	12:17:13	4
2538584	99	39	36,2	cyclictest	3192900	-21	kworker/u16:0+flush-8:0	12:32:46	4
2538584	99	38	35,2	cyclictest	2705504	-21	kworker/u16:3+flush-8:0	09:07:18	4
2538590	99	37	34,2	cyclictest	3192900	-21	kworker/u16:0+flush-8:0	12:32:28	6
2538588	99	37	35,2	cyclictest	2772823	-21	kworker/u16:4+events_unbound	09:20:08	5
2538588	99	36	34,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	12:09:20	5
2538588	99	36	33,2	cyclictest	2893467	-21	kworker/u16:3+events_unbound	10:32:19	5
2538588	99	36	33,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	12:27:19	5
2538590	99	35	33,2	cyclictest	3110492	-21	kworker/u16:4+flush-8:0	11:54:16	6
2538590	99	35	29,6	cyclictest	3224797	-21	kworker/u16:2+events_unbound	12:22:51	6
2538588	99	35	33,2	cyclictest	3110492	-21	kworker/u16:4+events_unbound	11:36:44	5
2538588	99	35	33,2	cyclictest	3110492	-21	kworker/u16:4+events_unbound	11:36:44	5
2538588	99	35	33,2	cyclictest	2893467	-21	kworker/u16:3+flush-8:0	10:08:00	5
2538588	99	35	33,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	10:13:00	5
2538588	99	35	33,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	10:13:00	5
2538588	99	34	32,2	cyclictest	3192900	-21	kworker/u16:0+events_unbound	12:20:48	5
2538588	99	34	32,2	cyclictest	3192900	-21	kworker/u16:0+events_unbound	12:16:36	5
2538588	99	34	32,2	cyclictest	2881478	-21	kworker/u16:0+flush-8:0	09:58:03	5
2538588	99	34	32,2	cyclictest	2609868	-21	kworker/u16:0+events_unbound	08:32:21	5
2538588	99	33	31,2	cyclictest	3192900	-21	kworker/u16:0+events_unbound	12:36:48	5
2538588	99	33	31,2	cyclictest	2868963	-21	kworker/u16:2+events_unbound	10:40:35	5
2538588	99	33	31,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	09:50:08	5
2538588	99	33	31,2	cyclictest	2705504	-21	kworker/u16:3+events_unbound	09:15:21	5
2782814	2	32	0,0	chrt	2782815	-21	ssh	09:08:32	7
2538590	99	32	29,2	cyclictest	2763302	-21	kworker/u16:0+events_unbound	09:22:38	6
2538588	99	32	30,2	cyclictest	3110492	-21	kworker/u16:4+events_unbound	11:42:52	5
2538588	99	32	30,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	11:10:11	5
2538588	99	32	30,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	10:53:09	5
2538588	99	32	30,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	10:53:09	5
2538588	99	32	30,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	09:54:02	5
2538588	99	32	30,2	cyclictest	2772823	-21	kworker/u16:4+events_unbound	09:09:21	5
2538588	99	32	30,2	cyclictest	2763302	-21	kworker/u16:0+events_unbound	09:33:10	5
2538588	99	32	30,2	cyclictest	2763302	-21	kworker/u16:0+events_unbound	09:33:10	5
2538588	99	32	30,2	cyclictest	2763302	-21	kworker/u16:0+events_unbound	09:29:58	5
2538588	99	32	30,2	cyclictest	2609868	-21	kworker/u16:0+events_unbound	08:41:34	5
2538588	99	32	30,2	cyclictest	2580820	-21	kworker/u16:1+events_unbound	07:40:45	5
2538598	99	31	30,0	cyclictest	0	-21	swapper/7	11:52:32	7
2538590	99	31	29,2	cyclictest	3110492	-21	kworker/u16:4+events_unbound	11:52:16	6
2538590	99	31	28,2	cyclictest	2893467	-21	kworker/u16:3+events_unbound	10:17:37	6
2538588	99	31	29,2	cyclictest	3224797	-21	kworker/u16:2+events_unbound	12:26:30	5
2538588	99	31	29,2	cyclictest	3003052	-21	kworker/u16:0+events_unbound	11:39:32	5
2538588	99	31	29,2	cyclictest	2763302	-21	kworker/u16:0+events_unbound	09:25:19	5
2538224	2	31	9,7	sleep6	0	-21	swapper/6	07:06:13	6
2538224	2	31	9,7	sleep6	0	-21	swapper/6	07:06:13	6
2538590	99	30	28,2	cyclictest	2854909	-21	kworker/u16:1+flush-8:0	10:02:13	6
2538588	99	30	28,2	cyclictest	2854909	-21	kworker/u16:1+flush-8:0	12:05:42	5
2538588	99	30	28,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	11:05:50	5
2538588	99	30	28,2	cyclictest	2734661	-21	kworker/u16:1+events_unbound	08:59:09	5
2538588	99	30	28,2	cyclictest	2570223	-21	kworker/u16:4+events_unbound	07:27:05	5
2538598	99	29	27,1	cyclictest	0	-21	swapper/7	10:42:03	7
2538590	99	29	26,2	cyclictest	2893467	-21	kworker/u16:3+flush-8:0	10:07:24	6
2538588	99	29	27,2	cyclictest	3170708	-21	kworker/u16:2+flush-8:0	11:53:40	5
2538588	99	29	27,2	cyclictest	3022470	-21	kworker/u16:3+events_unbound	11:24:59	5
2538588	99	29	27,2	cyclictest	2893467	-21	kworker/u16:3+events_unbound	10:28:20	5
2538588	99	29	27,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	10:26:39	5
2538588	99	29	27,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	09:46:56	5
2538588	99	29	27,2	cyclictest	2763302	-21	kworker/u16:0+flush-8:0	09:37:19	5
2538588	99	29	27,2	cyclictest	2548020	-21	kworker/u16:3+events_unbound	07:17:01	5
2538598	99	28	27,0	cyclictest	0	-21	swapper/7	09:43:39	7
2538598	99	28	27,0	cyclictest	0	-21	swapper/7	09:19:56	7
2538598	99	28	25,1	cyclictest	2580728	-21	latency_hist	07:27:18	7
2538588	99	28	26,2	cyclictest	3170708	-21	kworker/u16:2+events_unbound	11:59:07	5
2538588	99	28	26,2	cyclictest	3022470	-21	kworker/u16:3+events_unbound	10:51:26	5
2538588	99	28	26,2	cyclictest	2868963	-21	kworker/u16:2+flush-8:0	10:03:09	5
2538588	99	28	26,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	11:49:07	5
2538588	99	28	26,2	cyclictest	2475479	-21	kworker/u16:2+events_unbound	07:35:37	5
2538588	99	28	25,2	cyclictest	3022470	-21	kworker/u16:3+flush-8:0	11:17:19	5
2538584	99	28	26,2	cyclictest	2854909	-21	kworker/u16:1+flush-8:0	11:52:13	4
2538584	99	28	26,2	cyclictest	2548020	-21	kworker/u16:3+events_unbound	07:12:33	4
2538598	99	27	26,0	cyclictest	0	-21	swapper/7	08:32:01	7
2538590	99	27	25,2	cyclictest	2893467	-21	kworker/u16:3+events_unbound	10:03:49	6
2538590	99	27	25,2	cyclictest	2772823	-21	kworker/u16:4+events_unbound	09:38:09	6
2538590	99	27	25,2	cyclictest	2609868	-21	kworker/u16:0+events_unbound	08:27:49	6
2538588	99	27	25,2	cyclictest	2705504	-21	kworker/u16:3+events_unbound	08:49:21	5
2538588	99	27	25,2	cyclictest	2475479	-21	kworker/u16:2+events_unbound	08:00:32	5
2538588	99	27	25,2	cyclictest	2273262	-21	kworker/u16:0+events_unbound	07:08:38	5
2538598	99	26	25,0	cyclictest	0	-21	swapper/7	08:44:36	7
2538598	99	26	20,5	cyclictest	2676725	-21	latency_hist	08:17:18	7
2538598	99	26	20,5	cyclictest	2676725	-21	latency_hist	08:17:18	7
2538590	99	26	24,2	cyclictest	3170708	-21	kworker/u16:2+flush-8:0	11:57:20	6
2538590	99	26	24,2	cyclictest	3022470	-21	kworker/u16:3+flush-8:0	10:48:20	6
2538590	99	26	24,2	cyclictest	3003052	-21	kworker/u16:0+events_unbound	10:43:50	6
2538590	99	26	24,2	cyclictest	2893467	-21	kworker/u16:3+events_unbound	10:26:56	6
2538590	99	26	24,2	cyclictest	2772823	-21	kworker/u16:4+events_unbound	09:30:08	6
2538590	99	26	24,2	cyclictest	2548020	-21	kworker/u16:3+flush-8:0	07:12:34	6
2538590	99	26	23,2	cyclictest	2854909	-21	kworker/u16:1+events_unbound	11:27:25	6
2538588	99	26	24,2	cyclictest	3003052	-21	kworker/u16:0+flush-8:0	10:58:06	5
2538588	99	26	24,2	cyclictest	3003052	-21	kworker/u16:0+events_unbound	11:28:14	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17