OSADL QA Farm on Real-time of Mainline Linux

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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 Sun Dec 07, 2025 12:43:31)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1121423	99	51	48,2	cyclictest	1731019	-21	kworker/u16:4+flush-8:0	20:47:45	6
1121423	99	51	48,2	cyclictest	1629815	-21	kworker/u16:1+events_unbound	19:32:46	6
1121417	99	51	48,2	cyclictest	1315770	-21	kworker/u16:5+flush-8:0	17:12:46	4
1121423	99	50	47,2	cyclictest	1307683	-21	kworker/u16:3+flush-8:0	18:07:47	6
1121423	99	50	45,2	cyclictest	1713840	-21	kworker/u16:0+flush-8:0	20:22:59	6
1121084	2	50	28,7	sleep6	0	-21	swapper/6	15:22:06	6
1121417	99	48	45,2	cyclictest	1131148	-21	kworker/u16:0+flush-8:0	15:32:31	4
1121417	99	47	45,2	cyclictest	1091106	-21	kworker/u16:4+flush-8:0	15:48:01	4
1121417	99	47	44,2	cyclictest	1307683	-21	kworker/u16:3+events_unbound	17:17:57	4
1120865	2	46	11,30	sleep7	0	-21	swapper/7	15:19:02	7
1121417	99	44	42,2	cyclictest	1296466	-21	kworker/u16:2+events_unbound	17:09:45	4
1121417	99	44	41,2	cyclictest	1307683	-21	kworker/u16:3+events_unbound	18:29:45	4
1121423	99	43	41,2	cyclictest	1296466	-21	kworker/u16:2+flush-8:0	17:53:01	6
1121417	99	43	41,2	cyclictest	1315770	-21	kworker/u16:5+events_unbound	17:37:59	4
1121417	99	42	40,2	cyclictest	1542876	-21	kworker/u16:5+flush-8:0	18:52:59	4
1121417	99	42	40,2	cyclictest	1437055	-21	kworker/u16:4+events_unbound	18:36:45	4
1121417	99	42	40,2	cyclictest	1131148	-21	kworker/u16:0+events_unbound	15:32:49	4
1121425	99	41	34,5	cyclictest	1771386	-21	latency_hist	20:42:31	7
1121423	99	41	39,2	cyclictest	1307683	-21	kworker/u16:3+events_unbound	18:06:47	6
1121423	99	41	38,2	cyclictest	1307683	-21	kworker/u16:3+events_unbound	18:13:02	6
1121417	99	41	39,2	cyclictest	1629815	-21	kworker/u16:1+events_unbound	19:42:56	4
1121417	99	41	39,2	cyclictest	1437055	-21	kworker/u16:4+events_unbound	18:03:02	4
1121417	99	41	39,2	cyclictest	1296466	-21	kworker/u16:2+flush-8:0	17:24:45	4
1121417	99	40	38,2	cyclictest	1507717	-21	kworker/u16:1+events_unbound	19:08:01	4
1121417	99	40	38,2	cyclictest	1091106	-21	kworker/u16:4+flush-8:0	16:02:59	4
1121082	2	40	30,7	sleep4	0	-21	swapper/4	15:22:04	4
1121423	99	39	37,2	cyclictest	1731019	-21	kworker/u16:4+events_unbound	20:32:56	6
1121423	99	39	37,2	cyclictest	1477365	-21	kworker/u16:2+flush-8:0	18:27:58	6
1121423	99	39	37,2	cyclictest	1422655	-21	kworker/u16:0+events_unbound	17:50:47	6
1121423	99	39	36,2	cyclictest	1286291	-21	kworker/u16:0+events_unbound	16:52:39	6
1121417	99	39	37,2	cyclictest	1680863	-21	kworker/u16:2+events_unbound	20:12:48	4
1121417	99	39	37,2	cyclictest	1629815	-21	kworker/u16:1+events_unbound	19:33:41	4
1121417	99	39	37,2	cyclictest	1477365	-21	kworker/u16:2+events_unbound	18:44:45	4
1121417	99	39	37,2	cyclictest	1437055	-21	kworker/u16:4+events_unbound	19:39:42	4
1121417	99	39	37,2	cyclictest	1307683	-21	kworker/u16:3+flush-8:0	18:12:59	4
1121417	99	39	37,2	cyclictest	1296466	-21	kworker/u16:2+events_unbound	17:31:13	4
1121417	99	39	37,2	cyclictest	1266218	-21	kworker/u16:3+events_unbound	16:33:47	4
1121417	99	39	37,2	cyclictest	1131149	-21	kworker/u16:2+events_unbound	15:42:25	4
1121417	99	39	36,2	cyclictest	1307683	-21	kworker/u16:3+flush-8:0	18:07:50	4
1121417	99	39	36,2	cyclictest	1215797	-21	kworker/u16:0+flush-8:0	16:23:00	4
1121417	99	39	36,2	cyclictest	1183334	-21	kworker/u16:5+events_unbound	16:27:48	4
1121423	99	38	36,2	cyclictest	1713840	-21	kworker/u16:0+events_unbound	20:22:13	6
1121423	99	38	36,2	cyclictest	1680863	-21	kworker/u16:2+flush-8:0	20:07:56	6
1121423	99	38	36,2	cyclictest	1361899	-21	kworker/u16:0+flush-8:0	17:18:09	6
1121423	99	38	36,2	cyclictest	1236022	-21	kworker/u16:1+events_unbound	16:38:01	6
1121423	99	38	35,2	cyclictest	1437055	-21	kworker/u16:4+events_unbound	18:57:59	6
1121423	99	38	35,2	cyclictest	1315770	-21	kworker/u16:5+events_unbound	17:16:45	6
1121417	99	38	36,2	cyclictest	1731019	-21	kworker/u16:4+flush-8:0	20:47:55	4
1121417	99	38	36,2	cyclictest	1155308	-21	kworker/u16:1+events_unbound	15:52:57	4
1121083	2	38	27,8	sleep5	0	-21	swapper/5	15:22:05	5
1121423	99	37	35,2	cyclictest	1386537	-21	kworker/u16:1+events_unbound	17:58:03	6
1121423	99	37	34,2	cyclictest	1386537	-21	kworker/u16:1+flush-8:0	17:43:01	6
1121423	99	37	34,2	cyclictest	1307683	-21	kworker/u16:3+events_unbound	18:42:44	6
1121417	99	37	35,2	cyclictest	1386537	-21	kworker/u16:1+flush-8:0	17:43:00	4
1121417	99	37	35,2	cyclictest	1296466	-21	kworker/u16:2+events_unbound	16:56:08	4
1121417	99	37	35,2	cyclictest	1286291	-21	kworker/u16:0+flush-8:0	16:41:04	4
1121417	99	37	35,2	cyclictest	1131149	-21	kworker/u16:2+events_unbound	15:43:42	4
1121423	99	36	34,2	cyclictest	1437055	-21	kworker/u16:4+events_unbound	19:23:06	6
1121423	99	36	34,2	cyclictest	1272970	-21	kworker/u16:4+events_unbound	16:47:57	6
1121423	99	36	34,2	cyclictest	1155308	-21	kworker/u16:1+events_unbound	15:46:43	6
1121417	99	36	34,2	cyclictest	1680863	-21	kworker/u16:2+events_unbound	20:01:36	4
1121417	99	36	34,2	cyclictest	1669442	-21	kworker/u16:5+flush-8:0	19:50:45	4
1121417	99	36	34,2	cyclictest	1296466	-21	kworker/u16:2+events_unbound	17:53:00	4
1121417	99	36	34,2	cyclictest	1091106	-21	kworker/u16:4+events_unbound	15:25:47	4
1121425	99	35	31,2	cyclictest	1620987	-21	perl	19:27:47	7
1121423	99	35	33,2	cyclictest	1177255	-21	kworker/u16:3+events_unbound	15:57:58	6
1121423	99	35	33,2	cyclictest	1131148	-21	kworker/u16:0+flush-8:0	15:32:48	6
1121423	99	35	32,2	cyclictest	1307683	-21	kworker/u16:3+flush-8:0	17:03:02	6
1121417	99	35	33,2	cyclictest	1589330	-21	kworker/u16:0+events_unbound	19:28:22	4
1121417	99	35	33,2	cyclictest	1507717	-21	kworker/u16:1+events_unbound	19:01:30	4
1121417	99	35	33,2	cyclictest	1307683	-21	kworker/u16:3+flush-8:0	18:37:59	4
1121417	99	35	33,2	cyclictest	1307683	-21	kworker/u16:3+events_unbound	17:36:47	4
1121417	99	35	33,2	cyclictest	1091106	-21	kworker/u16:4+events_unbound	16:14:42	4
1121425	99	34	29,4	cyclictest	589235	-21	systemd-journal	18:42:44	7
1121425	99	34	29,4	cyclictest	1165615	-21	latency_hist	15:42:32	7
1121425	99	34	0,32	cyclictest	589235	-21	systemd-journal	15:47:32	7
1121423	99	34	32,2	cyclictest	1700886	-21	kworker/u16:1+events_unbound	20:38:47	6
1121423	99	34	32,2	cyclictest	1669442	-21	kworker/u16:5+flush-8:0	19:58:01	6
1121423	99	34	32,2	cyclictest	1629815	-21	kworker/u16:1+events_unbound	19:42:58	6
1121423	99	34	32,2	cyclictest	1629815	-21	kworker/u16:1+events_unbound	19:37:47	6
1121423	99	34	32,2	cyclictest	1539352	-21	kworker/u16:0+events_unbound	18:56:41	6
1121423	99	34	32,2	cyclictest	1437055	-21	kworker/u16:4+flush-8:0	18:42:31	6
1121423	99	34	32,2	cyclictest	1091106	-21	kworker/u16:4+events_unbound	15:28:47	6
1121423	99	34	31,2	cyclictest	1155308	-21	kworker/u16:1+events_unbound	15:56:34	6
1121423	99	34	31,2	cyclictest	1091106	-21	kworker/u16:4+events_unbound	16:12:45	6
1121417	99	34	32,2	cyclictest	1437055	-21	kworker/u16:4+events_unbound	18:20:49	4
1121417	99	34	32,2	cyclictest	1091106	-21	kworker/u16:4+flush-8:0	16:10:41	4
1121417	99	34	31,2	cyclictest	1700886	-21	kworker/u16:1+events_unbound	20:43:03	4
1121423	99	33	31,2	cyclictest	1437055	-21	kworker/u16:4+events_unbound	19:03:47	6
1121423	99	33	31,2	cyclictest	1296466	-21	kworker/u16:2+events_unbound	17:41:34	6
1121423	99	33	31,2	cyclictest	1296466	-21	kworker/u16:2+events_unbound	17:11:13	6
1121423	99	33	31,2	cyclictest	1177255	-21	kworker/u16:3+events_unbound	16:03:51	6
1121423	99	33	31,2	cyclictest	1155308	-21	kworker/u16:1+events_unbound	15:50:59	6
1121417	99	33	31,2	cyclictest	1731019	-21	kworker/u16:4+flush-8:0	20:29:09	4
1121417	99	33	31,2	cyclictest	1539352	-21	kworker/u16:0+events_unbound	18:51:10	4
1121417	99	33	31,2	cyclictest	1422655	-21	kworker/u16:0+events_unbound	18:01:05	4
1121417	99	33	31,2	cyclictest	1422655	-21	kworker/u16:0+events_unbound	17:47:57	4
1121423	99	32	30,2	cyclictest	1680863	-21	kworker/u16:2+events_unbound	20:05:13	6
1121423	99	32	30,2	cyclictest	1589330	-21	kworker/u16:0+events_unbound	19:21:14	6
1121423	99	32	30,2	cyclictest	1315770	-21	kworker/u16:5+flush-8:0	18:23:10	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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