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 Mon Feb 16, 2026 00:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1408907	99	98	90,6	cyclictest	1587660	-21	kworker/u4:6+events_unbound	00:13:28	1
1408906	99	95	69,19	cyclictest	54	-21	kswapd0	22:30:09	0
1408906	99	95	69,19	cyclictest	54	-21	kswapd0	22:30:09	0
1408907	99	80	27,10	cyclictest	0	-21	swapper/1	22:10:32	1
1408907	99	78	70,6	cyclictest	1579009	-21	kworker/u4:11+events_unbound	23:52:26	1
1408907	99	77	69,6	cyclictest	1599967	-21	kworker/u4:7+events_unbound	00:18:31	1
1408906	99	77	43,31	cyclictest	0	-21	swapper/0	00:00:30	0
1408907	99	75	57,6	cyclictest	1442100	-21	kworker/u4:21+events_unbound	21:26:10	1
1408906	99	74	29,43	cyclictest	1424336	-21	aten_r7power_vo	20:10:17	0
1408907	99	73	36,8	cyclictest	1513639	-21	df	22:35:18	1
1408907	99	73	36,8	cyclictest	1513639	-21	df	22:35:18	1
1408906	99	73	26,43	cyclictest	0	-21	swapper/0	21:25:31	0
1408907	99	72	36,6	cyclictest	1555651	-21	latency_hist	23:25:01	1
1408907	99	71	62,7	cyclictest	1604249	-21	kworker/u4:13+events_unbound	00:23:34	1
1408907	99	71	62,7	cyclictest	1604249	-21	kworker/u4:13+events_unbound	00:23:34	1
1408906	99	71	55,13	cyclictest	0	-21	swapper/0	00:35:38	0
1408906	99	71	39,30	cyclictest	1572864	-21	basename	23:45:18	0
1408906	99	71	38,31	cyclictest	1531537	-21	grep	22:55:37	0
1408906	99	71	27,41	cyclictest	0	-21	swapper/0	00:20:38	0
1408906	99	71	27,41	cyclictest	0	-21	swapper/0	00:20:38	0
1408907	99	70	61,6	cyclictest	1412664	-21	kworker/u4:3+events_unbound	19:56:04	1
1408907	99	69	31,7	cyclictest	0	-21	swapper/1	23:05:35	1
1408906	99	69	36,30	cyclictest	1521941	-21	/usr/sbin/munin	22:45:15	0
1408906	99	69	36,30	cyclictest	0	-21	swapper/0	23:35:43	0
1408906	99	69	32,34	cyclictest	1434331	-21	munin-run	20:50:01	0
1408907	99	67	57,7	cyclictest	1418966	-21	kworker/u4:7+events_unbound	19:51:03	1
1408906	99	67	23,41	cyclictest	0	-21	swapper/0	00:30:18	0
1408906	99	67	2,14	cyclictest	1461470	-21	apt-get	21:35:13	0
1408906	99	66	32,32	cyclictest	1487645	-21	aten_r7power_en	22:05:14	0
1408906	99	66	3,20	cyclictest	1556742	-21	ps	23:25:39	0
1408906	99	66	18,45	cyclictest	0	-21	swapper/0	22:15:19	0
1408906	99	66	18,44	cyclictest	0	-21	swapper/0	21:05:00	0
1408907	99	65	56,7	cyclictest	1415178	-21	kworker/u4:6+events_unbound	19:35:00	1
1408907	99	65	56,7	cyclictest	1415178	-21	kworker/u4:6+events_unbound	19:35:00	1
1408907	99	65	56,6	cyclictest	1510734	-21	kworker/u4:11+events_unbound	22:31:21	1
1408907	99	65	56,6	cyclictest	1510734	-21	kworker/u4:11+events_unbound	22:31:21	1
1408907	99	65	52,10	cyclictest	37	-21	kcompactd0	21:49:24	1
1408907	99	65	46,9	cyclictest	1425290	-21	kworker/u4:14	20:15:00	1
1408906	99	65	32,31	cyclictest	1564037	-21	grep	23:35:02	0
1408907	99	64	55,6	cyclictest	1425273	-21	kworker/u4:19+events_unbound	21:11:09	1
1408906	99	64	31,30	cyclictest	0	-21	swapper/0	21:50:28	0
1408906	99	64	1,14	cyclictest	1514533	-21	grep	22:35:39	0
1408906	99	64	1,14	cyclictest	1514533	-21	grep	22:35:39	0
1408906	99	63	33,28	cyclictest	1589603	-21	acpi	00:05:11	0
1408906	99	63	30,30	cyclictest	0	-21	swapper/0	19:10:35	0
1408906	99	63	26,34	cyclictest	1484364	-21	timerwakeupswit	22:00:38	0
1408906	99	63	2,19	cyclictest	1598797	-21	ssh	00:15:25	0
1408906	99	62	33,25	cyclictest	0	-21	swapper/0	22:20:31	0
1408906	99	62	3,13	cyclictest	1428730	-21	ntpq	20:25:34	0
1408906	99	62	31,29	cyclictest	1474371	-21	latency_hist	21:50:00	0
1408906	99	62	27,33	cyclictest	1539851	-21	ssh	23:05:37	0
1408906	99	62	27,33	cyclictest	1419959	-21	switchtime	19:50:35	0
1408907	99	61	49,9	cyclictest	54	-21	kswapd0	23:20:01	1
1408906	99	61	34,24	cyclictest	1505763	-21	/usr/sbin/munin	22:25:38	0
1408906	99	61	33,26	cyclictest	1569395	-21	proc_pri	23:40:39	0
1408906	99	61	3,20	cyclictest	1457193	-21	ssh	21:30:15	0
1408906	99	61	3,15	cyclictest	1435132	-21	ntpq	20:50:28	0
1408906	99	61	29,29	cyclictest	0	-21	swapper/0	20:00:19	0
1408906	99	61	28,30	cyclictest	0	-21	swapper/0	21:05:40	0
1408906	99	61	2,16	cyclictest	1421037	-21	ntpq	19:55:29	0
1408906	99	60	52,6	cyclictest	1442100	-21	kworker/u4:21+events_unbound	21:16:10	0
1408906	99	60	3,15	cyclictest	1440611	-21	ssh	21:10:35	0
1408906	99	60	28,30	cyclictest	1418309	-21	gltestperf	19:45:19	0
1408906	99	60	26,30	cyclictest	0	-21	swapper/0	19:40:33	0
1408906	99	60	2,14	cyclictest	1430694	-21	apt-get	20:35:14	0
1408906	99	60	18,38	cyclictest	1415473	-21	aten_r7power_po	19:35:17	0
1408906	99	60	10,44	cyclictest	1479142	-21	diskstats	21:55:19	0
1408907	99	59	50,7	cyclictest	1407650	-21	kworker/u4:4+events_unbound	19:36:02	1
1408906	99	59	7,12	cyclictest	1492678	-21	ntpq	22:10:32	0
1408906	99	59	3,10	cyclictest	1466488	-21	ntpq	21:40:25	0
1408906	99	59	25,32	cyclictest	1422998	-21	aten_r7power_cu	20:05:15	0
1408906	99	59	22,33	cyclictest	0	-21	swapper/0	23:20:06	0
1408906	99	59	2,12	cyclictest	1526117	-21	ssh	22:50:11	0
1408907	99	58	47,8	cyclictest	54	-21	kswapd0	00:05:11	1
1408906	99	58	3,17	cyclictest	1535386	-21	ssh	23:00:30	0
1408906	99	58	29,27	cyclictest	0	-21	swapper/0	00:30:01	0
1408906	99	58	25,30	cyclictest	0	-21	swapper/0	20:20:20	0
1408906	99	58	19,35	cyclictest	0	-21	swapper/0	22:40:37	0
1408906	99	57	27,27	cyclictest	0	-21	swapper/0	23:59:59	0
1408906	99	57	26,29	cyclictest	0	-21	swapper/0	19:15:17	0
1408906	99	57	2,14	cyclictest	1436379	-21	ntpq	20:55:34	0
1408906	99	57	1,14	cyclictest	1414712	-21	ntpq	19:30:26	0
1408906	99	57	1,14	cyclictest	1414712	-21	ntpq	19:30:26	0
1408906	99	57	1,13	cyclictest	1412142	-21	ntpq	19:20:21	0
1408907	99	56	46,8	cyclictest	1541009	-21	kworker/u4:4+events_unbound	23:10:59	1
1408907	99	56	46,8	cyclictest	1541009	-21	kworker/u4:4+events_unbound	23:10:59	1
1408907	99	56	46,7	cyclictest	0	-21	swapper/1	23:35:17	1
1408907	99	56	46,7	cyclictest	0	-21	swapper/1	21:20:15	1
1408906	99	56	49,5	cyclictest	1548447	-21	timerandwakeup	23:15:40	0
1408906	99	56	4,13	cyclictest	1577607	-21	ntpq	23:50:28	0
1408906	99	56	3,8	cyclictest	1593874	-21	munin-node	00:10:11	0
1408906	99	56	24,30	cyclictest	1425858	-21	gltestperf	20:15:19	0
1408906	99	56	22,30	cyclictest	0	-21	swapper/0	23:10:25	0
1408906	99	56	22,30	cyclictest	0	-21	swapper/0	23:10:24	0
1408907	99	55	46,6	cyclictest	1502227	-21	systemd	22:21:17	1
1408907	99	55	45,7	cyclictest	1608913	-21	diskmemload	00:27:20	1
1408906	99	55	1,14	cyclictest	1430430	-21	/usr/sbin/munin	20:30:42	0
1408907	99	53	43,7	cyclictest	1583309	-21	kworker/u4:0+events_unbound	00:30:42	1
1408907	99	53	43,6	cyclictest	0	-21	swapper/1	22:05:22	1
1408907	99	53	37,8	cyclictest	0	-21	swapper/1	23:55:27	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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