OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #0, slot #8

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 rack0slot8.osadl.org (updated Sat Mar 14, 2026 12:45:18)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3367826	99	443	439,3	cyclictest	0	-21	swapper/15	09:20:56	7
3367826	99	429	428,0	cyclictest	0	-21	swapper/15	08:39:32	7
3367824	99	429	425,3	cyclictest	3372807	-21	kworker/u64:6+events_unbound	07:31:10	5
3367824	99	429	425,3	cyclictest	3372807	-21	kworker/u64:6+events_unbound	07:31:10	5
3367824	99	429	422,3	cyclictest	3383367	-21	kworker/u64:0+events_unbound	08:44:08	5
3367826	99	428	427,0	cyclictest	0	-21	swapper/15	07:55:43	7
3367826	99	428	425,1	cyclictest	0	-21	swapper/15	09:30:56	7
3367825	99	428	0,427	cyclictest	0	-21	swapper/14	09:15:12	6
3367824	99	428	425,2	cyclictest	3453096	-21	kworker/u64:2+events_unbound	09:01:49	5
3367824	99	428	425,2	cyclictest	3412923	-21	kworker/u64:1+events_unbound	08:09:12	5
3367826	99	427	425,1	cyclictest	0	-21	swapper/15	08:33:34	7
3367826	99	427	425,1	cyclictest	0	-21	swapper/15	08:23:05	7
3367826	99	427	0,425	cyclictest	0	-21	swapper/15	08:02:29	7
3367825	99	427	0,426	cyclictest	0	-21	swapper/14	08:10:20	6
3367825	99	427	0,426	cyclictest	0	-21	swapper/14	07:17:18	6
3367826	99	426	425,0	cyclictest	0	-21	swapper/15	08:16:20	7
3367826	99	426	425,0	cyclictest	0	-21	swapper/15	07:52:21	7
3367826	99	426	425,0	cyclictest	0	-21	swapper/15	07:41:23	7
3367826	99	426	425,0	cyclictest	0	-21	swapper/15	07:18:32	7
3367826	99	426	424,1	cyclictest	0	-21	swapper/15	11:28:24	7
3367826	99	426	424,1	cyclictest	0	-21	swapper/15	09:03:34	7
3367826	99	426	424,1	cyclictest	0	-21	swapper/15	08:50:35	7
3367826	99	426	424,1	cyclictest	0	-21	swapper/15	08:25:58	7
3367826	99	426	424,1	cyclictest	0	-21	swapper/15	08:06:44	7
3367826	99	426	424,1	cyclictest	0	-21	swapper/15	07:25:16	7
3367826	99	426	424,1	cyclictest	0	-21	swapper/15	07:25:15	7
3367825	99	426	0,0	cyclictest	0	-21	swapper/14	08:42:12	6
3367825	99	426	0,0	cyclictest	0	-21	swapper/14	07:35:32	6
3367825	99	426	0,0	cyclictest	0	-21	swapper/14	07:35:32	6
3367825	99	426	0,0	cyclictest	0	-21	swapper/14	07:26:31	6
3367825	99	426	0,0	cyclictest	0	-21	swapper/14	07:26:31	6
3367824	99	426	424,1	cyclictest	0	-21	swapper/13	08:18:31	5
3367826	99	425	424,0	cyclictest	0	-21	swapper/15	11:20:15	7
3367826	99	425	424,0	cyclictest	0	-21	swapper/15	09:25:45	7
3367826	99	425	424,0	cyclictest	0	-21	swapper/15	09:17:31	7
3367826	99	425	424,0	cyclictest	0	-21	swapper/15	08:56:13	7
3367826	99	425	424,0	cyclictest	0	-21	swapper/15	08:45:09	7
3367826	99	425	424,0	cyclictest	0	-21	swapper/15	08:13:35	7
3367826	99	425	424,0	cyclictest	0	-21	swapper/15	07:30:36	7
3367826	99	425	424,0	cyclictest	0	-21	swapper/15	07:30:35	7
3367826	99	425	424,0	cyclictest	0	-21	swapper/15	07:20:10	7
3367826	99	425	424,0	cyclictest	0	-21	swapper/15	07:20:10	7
3367826	99	425	423,1	cyclictest	0	-21	swapper/15	07:36:45	7
3367826	99	425	423,1	cyclictest	0	-21	swapper/15	07:36:45	7
3367825	99	425	0,424	cyclictest	0	-21	swapper/14	07:55:43	6
3367825	99	425	0,0	cyclictest	0	-21	swapper/14	08:38:25	6
3367824	99	425	422,2	cyclictest	3372807	-21	kworker/u64:6+events_unbound	07:16:27	5
3367826	99	424	423,0	cyclictest	0	-21	swapper/15	07:46:07	7
3367825	99	423	0,0	cyclictest	0	-21	swapper/14	08:56:16	6
3367824	99	423	420,2	cyclictest	3444753	-21	kworker/u64:1+events_unbound	08:51:57	5
3367824	99	421	418,2	cyclictest	545010	-21	Isolated	23:03:21	5
3367812	99	419	0,418	cyclictest	3553581	-21	meminfo	09:55:09	10
3367824	99	417	413,3	cyclictest	3372807	-21	kworker/u64:6+events_unbound	07:52:21	5
3367824	99	415	413,1	cyclictest	0	-21	swapper/13	08:39:34	5
3367814	99	413	409,3	cyclictest	3383367	-21	kworker/u64:0+events_unbound	08:28:19	11
3367814	99	408	405,2	cyclictest	0	-21	swapper/5	07:30:08	11
3367814	99	408	405,2	cyclictest	0	-21	swapper/5	07:30:07	11
3367814	99	407	405,1	cyclictest	1699	-21	gdbus	08:05:58	11
3367814	99	407	405,1	cyclictest	0	-21	swapper/5	07:28:55	11
3367814	99	407	405,1	cyclictest	0	-21	swapper/5	07:28:55	11
3367814	99	407	404,2	cyclictest	2733442	-21	WebrtcWorker		11
3367814	99	406	405,0	cyclictest	0	-21	swapper/5	11:21:09	11
3367814	99	406	404,1	cyclictest	0	-21	swapper/5	08:54:05	11
3367814	99	405	404,1	cyclictest	0	-21	swapper/5	08:03:10	11
3367814	99	404	400,1	cyclictest	124055	10	AudioIP~allback	11:28:17	11
3367814	99	403	402,0	cyclictest	0	-21	swapper/5	08:18:32	11
3367814	99	403	401,1	cyclictest	1559	-21	thermald	07:16:28	11
3367814	99	403	399,1	cyclictest	2642342	5	alsa-sink-ALC66	07:51:14	11
3367821	99	401	392,4	cyclictest	3383367	-21	kworker/u64:0+events_unbound	08:19:20	2
3367814	99	401	399,1	cyclictest	0	-21	swapper/5	08:44:08	11
3367814	99	401	397,2	cyclictest	3466255	-21	kworker/u64:5+events_unbound	09:28:36	11
3367821	99	400	396,3	cyclictest	3344176	-21	kworker/u64:2+events_unbound	07:27:27	2
3367821	99	400	396,3	cyclictest	3344176	-21	kworker/u64:2+events_unbound	07:27:26	2
3367821	99	398	394,3	cyclictest	3478262	-21	kworker/u64:6+events_unbound	09:08:30	2
3367814	99	397	393,3	cyclictest	41440	-21	Socket	23:03:21	11
3367814	99	397	393,3	cyclictest	41440	-21	Socket	23:03:21	11
3367814	99	397	392,3	cyclictest	3466255	-21	kworker/u64:5+events_unbound	08:39:34	11
3367823	99	395	391,2	cyclictest	2642342	5	alsa-sink-ALC66	07:16:27	4
3367821	99	395	393,1	cyclictest	0	-21	swapper/10	07:31:03	2
3367821	99	395	393,1	cyclictest	0	-21	swapper/10	07:31:03	2
3367821	99	395	392,2	cyclictest	3383367	-21	kworker/u64:0+events_unbound	08:21:34	2
3367814	99	395	395,0	cyclictest	0	-21	swapper/5	09:08:19	11
3367821	99	394	393,1	cyclictest	0	-21	swapper/10	09:10:47	2
3367823	99	393	386,3	cyclictest	2642342	5	alsa-sink-ALC66	09:30:56	4
3367823	99	392	387,2	cyclictest	0	-21	swapper/12	08:18:31	4
3367821	99	392	390,1	cyclictest	2642342	5	alsa-sink-ALC66	07:17:18	2
3367821	99	392	389,2	cyclictest	2642342	5	alsa-sink-ALC66	08:36:42	2
3367823	99	391	388,2	cyclictest	758	-21	usb-storage	07:33:19	4
3367823	99	391	388,2	cyclictest	758	-21	usb-storage	07:33:19	4
3367823	99	391	388,2	cyclictest	3371349	-21	kworker/u64:3+events_unbound	07:43:22	4
3367821	99	391	388,2	cyclictest	1026469	-21	MediaPD~oder		2
3367811	99	391	0,386	cyclictest	3570933	-21	meminfo	10:10:11	9
3367823	99	390	387,2	cyclictest	3349583	-21	kworker/u64:4+events_unbound	07:46:47	4
3367823	99	390	386,3	cyclictest	3478262	-21	kworker/u64:6+events_unbound	08:50:41	4
3367821	99	389	387,1	cyclictest	2642342	5	alsa-sink-ALC66	09:04:01	2
3367821	99	389	386,2	cyclictest	3444753	-21	kworker/u64:1+events_unbound	09:16:19	2
3367823	99	388	386,1	cyclictest	0	-21	swapper/12	08:02:23	4
3367823	99	388	385,2	cyclictest	1026490	-21	MediaSu~isor		4
3367821	99	388	384,3	cyclictest	3349583	-21	kworker/u64:4+events_unbound	07:58:29	2
3367823	99	387	384,2	cyclictest	3293746	-21	kworker/u64:0+events_unbound	07:14:14	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17