OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, 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.

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 rack7slot2.osadl.org (updated Wed Jun 24, 2026 00:44:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1407225	99	121	101,10	cyclictest	1507479	-21	kworker/u4:7+events_unbound	22:41:32	0
1407225	99	110	102,6	cyclictest	1533859	-21	kworker/u4:9+events_unbound	23:06:35	0
1407225	99	105	75,28	cyclictest	53	-21	kswapd0	21:30:21	0
1407226	99	103	95,6	cyclictest	1533859	-21	kworker/u4:9+events_unbound	23:11:37	1
1407226	99	102	94,6	cyclictest	1462996	-21	kworker/u4:0+events_unbound	22:01:27	1
1407226	99	98	91,5	cyclictest	1560012	-21	kworker/u4:2+events_unbound	23:31:39	1
1407226	99	98	91,5	cyclictest	1560012	-21	kworker/u4:2+events_unbound	23:31:39	1
1407225	99	96	88,6	cyclictest	1462998	-21	kworker/u4:3+events_unbound	22:06:29	0
1407225	99	94	77,7	cyclictest	1564486	-21	kworker/u4:5+events_unbound	23:40:00	0
1407225	99	91	83,6	cyclictest	1551750	-21	kworker/u4:13+events_unbound	23:41:41	0
1407225	99	90	82,6	cyclictest	1595106	-21	kworker/u4:13+events_unbound	00:20:00	0
1407225	99	90	82,6	cyclictest	1595106	-21	kworker/u4:13+events_unbound	00:20:00	0
1407225	99	90	81,6	cyclictest	15	1	ktimers/0	22:46:44	0
1407226	99	89	82,5	cyclictest	1421339	-21	kworker/u4:1+events_unbound	21:21:21	1
1407226	99	89	81,6	cyclictest	1411029	-21	kworker/u4:6+events_unbound	19:25:00	1
1407226	99	89	73,8	cyclictest	1396211	-21	kworker/u4:20+events_unbound	19:30:01	1
1407226	99	87	80,5	cyclictest	1421344	-21	kworker/u4:4+events_unbound	20:20:01	1
1407226	99	87	79,6	cyclictest	1421345	-21	kworker/u4:6+events_unbound	20:15:00	1
1407226	99	86	78,5	cyclictest	1420041	-21	kworker/u4:14+events_unbound	20:01:11	1
1407225	99	86	79,5	cyclictest	1421339	-21	kworker/u4:1+events_unbound	20:50:00	0
1407225	99	86	78,6	cyclictest	1524841	-21	kworker/u4:3+events_unbound	22:51:32	0
1407226	99	84	75,7	cyclictest	1449482	-21	kworker/u4:6+events_unbound	21:51:25	1
1407226	99	84	75,7	cyclictest	1426457	-21	kworker/u4:9+events_unbound	21:26:24	1
1407226	99	83	75,6	cyclictest	1538317	-21	kworker/u4:7+events_unbound	23:36:40	1
1407225	99	83	77,4	cyclictest	1454017	-21	kworker/u4:4+events_unbound	21:36:24	0
1407225	99	83	75,5	cyclictest	1420036	-21	kworker/u4:8+events_unbound	20:25:01	0
1407226	99	82	73,6	cyclictest	1454017	-21	kworker/u4:4+events_unbound	21:56:26	1
1407225	99	82	69,11	cyclictest	1411029	-21	kworker/u4:6+events_unbound	19:55:00	0
1407225	99	81	73,6	cyclictest	1595106	-21	kworker/u4:13+events_unbound	00:21:42	0
1407226	99	80	73,5	cyclictest	1454015	-21	kworker/u4:1+events_unbound	21:41:23	1
1407226	99	78	59,6	cyclictest	1430271	-21	kworker/u4:18+events_unbound	21:11:21	1
1407226	99	77	66,4	cyclictest	1590647	-21	kworker/u4:2+events_unbound	00:01:41	1
1407226	99	77	66,4	cyclictest	1590647	-21	kworker/u4:2+events_unbound	00:01:41	1
1407226	99	75	68,5	cyclictest	1396214	-21	kworker/u4:23+events_unbound	19:36:08	1
1407226	99	75	68,5	cyclictest	1396214	-21	kworker/u4:23+events_unbound	19:36:07	1
1407226	99	75	66,7	cyclictest	1420041	-21	kworker/u4:14+events_unbound	21:06:20	1
1407225	99	69	61,6	cyclictest	1529340	-21	kworker/u4:6+events_unbound	23:05:00	0
1407226	99	68	62,4	cyclictest	1573477	-21	kworker/u4:0+events_unbound	23:51:41	1
1407226	99	68	59,7	cyclictest	1489435	-21	kworker/u4:0+events_unbound	22:11:30	1
1407226	99	68	59,7	cyclictest	1489435	-21	kworker/u4:0+events_unbound	22:11:30	1
1407225	99	68	56,5	cyclictest	1449482	-21	kworker/u4:6+events_unbound	21:55:02	0
1407226	99	67	60,5	cyclictest	1529338	-21	kworker/u4:4+events_unbound	22:56:33	1
1407225	99	67	59,6	cyclictest	1420041	-21	kworker/u4:14+events_unbound	20:06:11	0
1407225	99	66	52,7	cyclictest	1454018	-21	kworker/u4:5+events_unbound	21:55:03	0
1407226	99	65	57,6	cyclictest	1408450	-21	kworker/u4:4+events_unbound	19:51:09	1
1407226	99	65	45,7	cyclictest	1489436	-21	kworker/u4:1+events_unbound	22:17:01	1
1407226	99	64	57,5	cyclictest	1430268	-21	kworker/u4:15+events_unbound	20:55:02	1
1407225	99	64	51,7	cyclictest	1562127	-21	kworker/u4:1	23:30:00	0
1407226	99	63	55,6	cyclictest	1396211	-21	kworker/u4:20+events_unbound	19:41:09	1
1407226	99	63	54,7	cyclictest	1621940	-21	kworker/u4:8+events_unbound	00:39:59	1
1407226	99	63	53,7	cyclictest	0	-21	swapper/1	23:15:14	1
1407226	99	63	53,7	cyclictest	0	-21	swapper/1	00:30:30	1
1407226	99	62	56,4	cyclictest	1542802	-21	kworker/u4:8+events_unbound	23:45:01	1
1407226	99	62	55,5	cyclictest	1533859	-21	kworker/u4:9+events_unbound	23:01:36	1
1407226	99	62	55,5	cyclictest	1421340	-21	kworker/u4:3+events_unbound	20:31:17	1
1407226	99	62	54,6	cyclictest	1421338	-21	kworker/u4:0+events_unbound	20:21:14	1
1407225	99	62	56,4	cyclictest	15	1	ktimers/0	21:21:53	0
1407225	99	62	55,5	cyclictest	1484925	-21	kworker/u4:2+events_unbound	22:15:00	0
1407225	99	62	55,5	cyclictest	1484925	-21	kworker/u4:2+events_unbound	22:15:00	0
1407225	99	61	42,17	cyclictest	1562662	-21	df_abs	23:30:16	0
1407225	99	61	42,17	cyclictest	1562662	-21	df_abs	23:30:16	0
1407226	99	60	52,6	cyclictest	1396214	-21	kworker/u4:23+events_unbound	19:20:02	1
1407225	99	60	49,9	cyclictest	53	-21	kswapd0	00:00:21	0
1407225	99	60	49,9	cyclictest	53	-21	kswapd0	00:00:21	0
1407225	99	59	51,6	cyclictest	1582435	-21	kworker/u4:12+events_unbound	23:56:42	0
1407225	99	59	38,19	cyclictest	1438709	-21	fschecks_time	21:10:22	0
1407226	99	58	50,6	cyclictest	1502980	-21	kworker/u4:1+events_unbound	22:31:30	1
1407225	99	57	53,3	cyclictest	19	1	rcuc/0	21:41:23	0
1407225	99	57	48,7	cyclictest	0	-21	swapper/0	00:31:08	0
1407226	99	56	48,6	cyclictest	1026700	-21	kworker/u4:18+events_unbound	19:10:02	1
1407226	99	56	48,5	cyclictest	1511304	-21	kworker/u4:8+events_unbound	22:44:00	1
1407226	99	56	47,6	cyclictest	1470650	-21	/usr/sbin/munin	21:45:39	1
1407226	99	56	40,11	cyclictest	0	-21	swapper/1	20:50:00	1
1407225	99	56	49,5	cyclictest	1532439	-21	/usr/sbin/munin	22:55:35	0
1407225	99	56	44,10	cyclictest	1507413	-21	ssh	22:27:17	0
1407226	99	55	47,6	cyclictest	1432836	-21	kworker/u4:20+events_unbound	21:01:17	1
1407226	99	55	43,9	cyclictest	1607381	-21	ps	00:20:39	1
1407226	99	55	37,6	cyclictest	1538317	-21	kworker/u4:7+events_unbound	23:07:00	1
1407225	99	55	47,6	cyclictest	1430269	-21	kworker/u4:16+events_unbound	20:41:16	0
1407225	99	55	47,6	cyclictest	1430269	-21	kworker/u4:16+events_unbound	20:41:16	0
1407225	99	55	45,7	cyclictest	1615005	-21	sed	00:30:01	0
1407226	99	54	43,7	cyclictest	0	-21	swapper/1	23:25:12	1
1407225	99	54	8,31	cyclictest	1407199	-21	munin-run	19:10:01	0
1407225	99	53	46,5	cyclictest	1403515	-21	kworker/u4:1+events_unbound	19:11:06	0
1407225	99	53	45,6	cyclictest	1498441	-21	kworker/u4:12+events_unbound	22:21:30	0
1407225	99	53	45,6	cyclictest	1498441	-21	kworker/u4:12+events_unbound	22:21:29	0
1407225	99	53	33,18	cyclictest	1415442	-21	fschecks_time	19:40:18	0
1407225	99	53	32,19	cyclictest	1598076	-21	gltestperf	00:10:19	0
1407226	99	52	45,5	cyclictest	1582435	-21	kworker/u4:12+events_unbound	00:26:00	1
1407226	99	52	44,6	cyclictest	1520310	-21	kworker/u4:18+events_unbound	22:50:03	1
1407226	99	52	44,6	cyclictest	1511304	-21	kworker/u4:8+events_unbound	22:45:02	1
1407225	99	52	43,7	cyclictest	1435366	-21	systemd	20:56:16	0
1407225	99	52	32,18	cyclictest	0	-21	swapper/0	22:00:34	0
1407225	99	52	30,20	cyclictest	1597347	-21	diskmemload	00:10:01	0
1407226	99	51	45,4	cyclictest	0	-21	swapper/1	21:31:23	1
1407226	99	51	36,6	cyclictest	1542802	-21	kworker/u4:8+events_unbound	23:46:00	1
1407225	99	51	44,5	cyclictest	1407221	-21	cyclictest	23:10:09	0
1407225	99	51	43,6	cyclictest	1549676	-21	/usr/sbin/munin	23:15:20	0
1407226	99	50	44,4	cyclictest	1421339	-21	kworker/u4:1+events_unbound	20:45:02	1
1407226	99	50	44,4	cyclictest	1421339	-21	kworker/u4:1+events_unbound	20:45:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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