OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackeslot4s.osadl.org (updated Fri Apr 24, 2026 12:44:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2827197	99	51	48,2	cyclictest	2910371	-21	kworker/u8:4+events_unbound	09:05:24	2
2827197	99	47	44,2	cyclictest	2889784	-21	kworker/u8:0+events_unbound	09:20:13	2
2827197	99	45	43,2	cyclictest	3034829	-21	kworker/u8:0+events_unbound	10:35:26	2
2827197	99	44	41,2	cyclictest	3066106	-21	kworker/u8:1+events_unbound	11:05:14	2
2827197	99	44	41,2	cyclictest	2993459	-21	kworker/u8:1+events_unbound	09:50:22	2
2827197	99	44	41,2	cyclictest	2843129	-21	kworker/u8:0+events_unbound	07:35:13	2
2827190	99	44	39,3	cyclictest	3024273	-21	kworker/u8:3+events_unbound	10:30:15	1
2827183	99	44	29,13	cyclictest	2977607	-21	/usr/sbin/munin	09:35:23	0
2827183	99	44	29,13	cyclictest	2977607	-21	/usr/sbin/munin	09:35:23	0
2827197	99	42	39,2	cyclictest	3066106	-21	kworker/u8:1+events_unbound	11:20:15	2
2827197	99	42	39,2	cyclictest	3003971	-21	kworker/u8:2+events_unbound	10:15:11	2
2827197	99	42	39,2	cyclictest	2905209	-21	kworker/u8:1+events_unbound	08:40:23	2
2827197	99	41	38,2	cyclictest	3003971	-21	kworker/u8:2+events_unbound	10:30:12	2
2827197	99	41	38,2	cyclictest	2843129	-21	kworker/u8:0+events_unbound	07:50:14	2
2827190	99	41	37,3	cyclictest	3024273	-21	kworker/u8:3+flush-259:0	10:25:19	1
2827197	99	40	37,2	cyclictest	2889784	-21	kworker/u8:0+events_unbound	08:30:13	2
2827190	99	40	33,5	cyclictest	3117276	-21	ntpq	11:45:22	1
2827190	99	39	35,3	cyclictest	2794044	-21	kworker/u8:1+flush-259:0	07:15:00	1
2827197	99	38	35,2	cyclictest	3024273	-21	kworker/u8:3+events_unbound	10:45:13	2
2827197	99	38	32,2	cyclictest	2889784	-21	kworker/u8:0+events_unbound	09:15:23	2
2827190	99	38	34,3	cyclictest	2806274	-21	kworker/u8:3+flush-259:0	07:30:20	1
2827199	99	37	32,3	cyclictest	3091912	-21	latency_hist	11:25:01	3
2827197	99	37	35,1	cyclictest	3123994	-21	kworker/u8:2+events_unbound	12:10:25	2
2827197	99	37	33,3	cyclictest	3003971	-21	kworker/u8:2+events_unbound	10:50:23	2
2827190	99	37	31,2	cyclictest	2889784	-21	kworker/u8:0+flush-259:0	08:25:22	1
2827197	99	36	33,2	cyclictest	3123994	-21	kworker/u8:2+events_unbound	12:20:22	2
2827197	99	36	33,2	cyclictest	2977599	-21	kworker/u8:2+events_unbound	09:45:14	2
2827197	99	36	33,2	cyclictest	2977599	-21	kworker/u8:2+events_unbound	09:45:13	2
2827190	99	36	32,3	cyclictest	3024273	-21	kworker/u8:3+flush-259:0	11:39:59	1
2827190	99	36	32,3	cyclictest	2982562	-21	gpgv	09:40:01	1
2827190	99	36	32,3	cyclictest	2982562	-21	gpgv	09:40:00	1
2827190	99	36	32,3	cyclictest	2879266	-21	kworker/u8:1+flush-259:0	08:00:23	1
2827183	99	36	31,3	cyclictest	2910609	-21	apt-get	08:30:10	0
2827197	99	35	32,2	cyclictest	2889784	-21	kworker/u8:0+events_unbound	09:00:23	2
2827197	99	35	32,2	cyclictest	2879644	-21	kworker/u8:3+events_unbound	08:05:21	2
2827197	99	35	31,3	cyclictest	3155290	-21	kworker/u8:0+events_unbound	12:30:18	2
2827197	99	35	31,3	cyclictest	2889784	-21	kworker/u8:0+events_unbound	08:54:25	2
2827190	99	35	31,3	cyclictest	2843129	-21	kworker/u8:0+flush-259:0	07:30:00	1
2827197	99	34	31,2	cyclictest	3024273	-21	kworker/u8:3+events_unbound	11:34:26	2
2827190	99	34	30,3	cyclictest	2889784	-21	kworker/u8:0+flush-259:0	08:55:22	1
2827190	99	34	30,3	cyclictest	2827155	-21	kworker/u8:2+flush-259:0	07:40:25	1
2827183	99	34	28,5	cyclictest	3159644	-21	ntpq	12:25:21	0
2827197	99	33	30,2	cyclictest	3123994	-21	kworker/u8:2+events_unbound	12:00:12	2
2827197	99	33	30,2	cyclictest	2806274	-21	kworker/u8:3+events_unbound	07:20:00	2
2827190	99	33	30,2	cyclictest	3097453	-21	kworker/u8:0+events_unbound	12:05:15	1
2827190	99	33	29,3	cyclictest	3107756	-21	kworker/u8:2+events_unbound	11:40:12	1
2827190	99	33	29,3	cyclictest	2869275	-21	kworker/u8:4+flush-259:0	07:55:19	1
2827183	99	33	28,3	cyclictest	3050906	-21	apt-get	10:45:11	0
2827197	99	32	29,2	cyclictest	3139204	-21	kworker/u8:1+events_unbound	12:16:25	2
2827197	99	32	29,2	cyclictest	3066106	-21	kworker/u8:1+events_unbound	11:17:25	2
2827197	99	32	29,2	cyclictest	3024273	-21	kworker/u8:3+events_unbound	10:25:14	2
2827197	99	32	28,3	cyclictest	2879644	-21	kworker/u8:3+events_unbound	08:03:25	2
2827197	99	32	27,4	cyclictest	2889784	-21	kworker/u8:0+events_unbound	08:12:25	2
2827197	99	32	26,4	cyclictest	2900081	-21	latency_hist	08:20:02	2
2827190	99	32	28,3	cyclictest	3139204	-21	kworker/u8:1+flush-259:0	12:20:21	1
2827199	99	31	27,3	cyclictest	3003971	-21	kworker/u8:2+flush-259:0	10:35:00	3
2827197	99	31	29,2	cyclictest	3097453	-21	kworker/u8:0+events_unbound	11:35:14	2
2827197	99	31	28,2	cyclictest	3024273	-21	kworker/u8:3+events_unbound	11:51:26	2
2827197	99	31	28,2	cyclictest	3024273	-21	kworker/u8:3+events_unbound	11:25:24	2
2827190	99	31	28,2	cyclictest	2827155	-21	kworker/u8:2+flush-259:0	07:45:23	1
2827190	99	31	27,3	cyclictest	2910371	-21	kworker/u8:4+flush-259:0	09:55:19	1
2827190	99	31	27,3	cyclictest	2889784	-21	kworker/u8:0+flush-259:0	08:30:21	1
2827183	99	31	25,4	cyclictest	3050642	-21	latency_hist	10:45:00	0
2827190	99	30	25,3	cyclictest	3024273	-21	kworker/u8:3+events_unbound	11:16:27	1
2827190	99	30	24,4	cyclictest	2869307	-21	apt-get	07:50:10	1
2827197	99	29	26,2	cyclictest	2889784	-21	kworker/u8:0+flush-259:0	08:37:28	2
2827197	99	29	25,3	cyclictest	2843129	-21	kworker/u8:0+events_unbound	07:57:24	2
2827190	99	29	25,3	cyclictest	3040656	-21	apt-get	10:35:13	1
2827190	99	29	25,3	cyclictest	2905209	-21	kworker/u8:1+flush-259:0	08:40:17	1
2827190	99	29	24,4	cyclictest	3149719	-21	apt-get	12:20:00	1
2827190	99	29	24,4	cyclictest	3066106	-21	kworker/u8:1+flush-259:0	11:05:25	1
2827183	99	29	17,9	cyclictest	3024273	-21	kworker/u8:3+flush-259:0	11:50:01	0
2827199	99	28	23,4	cyclictest	3118142	-21	apt-get	11:50:00	3
2827197	99	28	25,2	cyclictest	3066106	-21	kworker/u8:1+events_unbound	11:10:17	2
2827197	99	28	25,2	cyclictest	3024273	-21	kworker/u8:3+events_unbound	11:40:19	2
2827190	99	28	25,2	cyclictest	3123994	-21	kworker/u8:2+events_unbound	12:35:14	1
2827190	99	28	25,2	cyclictest	3003971	-21	kworker/u8:2+events_unbound	10:50:13	1
2827190	99	28	24,3	cyclictest	2889784	-21	kworker/u8:0+flush-259:0	09:25:20	1
2827190	99	28	22,4	cyclictest	2951629	-21	latency_hist	09:10:01	1
2827199	99	27	21,4	cyclictest	3134177	-21	latency_hist	12:05:01	3
2827199	99	27	20,5	cyclictest	3107805	-21	latency_hist	11:40:01	3
2827197	99	27	24,2	cyclictest	3139204	-21	kworker/u8:1+events_unbound	12:28:25	2
2827197	99	27	24,2	cyclictest	2910371	-21	kworker/u8:4+events_unbound	09:40:22	2
2827197	99	27	24,2	cyclictest	2879644	-21	kworker/u8:3+events_unbound	08:22:23	2
2827197	99	27	23,3	cyclictest	2853322	-21	gpgv	07:35:01	2
2827190	99	27	23,3	cyclictest	3024273	-21	kworker/u8:3+flush-259:0	11:30:21	1
2827199	99	26	22,3	cyclictest	2889784	-21	kworker/u8:0+events_unbound	09:50:15	3
2827197	99	26	23,2	cyclictest	3003971	-21	kworker/u8:2+events_unbound	10:04:50	2
2827197	99	26	22,3	cyclictest	3117764	-21	kworker/u8:4+events_unbound	12:05:25	2
2827197	99	26	22,3	cyclictest	3024273	-21	kworker/u8:3+events_unbound	11:47:26	2
2827197	99	26	22,3	cyclictest	3003971	-21	kworker/u8:2+flush-259:0	10:05:21	2
2827197	99	26	22,3	cyclictest	2889784	-21	kworker/u8:0+flush-259:0	09:10:20	2
2827197	99	26	21,4	cyclictest	2826916	-21	latency_hist	07:10:00	2
2827197	99	26	21,4	cyclictest	2826916	-21	latency_hist	07:10:00	2
2827190	99	26	23,2	cyclictest	2889784	-21	kworker/u8:0+flush-259:0	09:50:20	1
2827190	99	26	22,3	cyclictest	3139204	-21	kworker/u8:1+flush-259:0	12:25:24	1
2827190	99	26	22,3	cyclictest	3066106	-21	kworker/u8:1+events_unbound	11:20:13	1
2827190	99	26	22,3	cyclictest	3024273	-21	kworker/u8:3+flush-259:0	11:30:00	1
2827190	99	26	22,3	cyclictest	3003971	-21	kworker/u8:2+events_unbound	10:00:10	1
2827190	99	26	22,3	cyclictest	2905209	-21	kworker/u8:1+flush-259:0	08:35:11	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:34