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 376 highest latencies:

System rack7slot2.osadl.org (updated Wed Feb 04, 2026 00:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1546072	99	119	105,12	cyclictest	1661643	-21	kworker/u4:11+events_unbound	23:06:37	0
1546072	99	116	108,6	cyclictest	1548539	-21	kworker/u4:10+events_unbound	20:01:01	0
1546072	99	112	103,6	cyclictest	1670503	-21	kworker/u4:5+events_unbound	23:01:37	0
1546072	99	107	87,7	cyclictest	1626990	-21	kworker/u4:3+events_unbound	22:21:32	0
1546072	99	106	98,6	cyclictest	1544815	-21	kworker/u4:2+events_unbound	19:55:59	0
1546072	99	104	96,6	cyclictest	1649094	-21	kworker/u4:10+events_unbound	22:51:34	0
1546072	99	102	90,9	cyclictest	54	-21	kswapd0	21:55:07	0
1546073	99	98	90,6	cyclictest	1623227	-21	kworker/u4:0+events_unbound	22:11:33	1
1546073	99	93	86,5	cyclictest	1692757	-21	kworker/u4:10+events_unbound	23:26:41	1
1546072	99	93	86,5	cyclictest	1561182	-21	kworker/u4:1+events_unbound	20:16:05	0
1546072	99	91	84,5	cyclictest	1561182	-21	kworker/u4:1+events_unbound	20:26:06	0
1546072	99	91	72,15	cyclictest	54	-21	kswapd0	22:00:19	0
1546073	99	87	70,6	cyclictest	1714257	-21	kworker/u4:2+events_unbound	00:01:48	1
1546072	99	86	78,6	cyclictest	1692102	-21	kworker/u4:9+events_unbound	23:21:40	0
1546072	99	85	78,5	cyclictest	1544816	-21	kworker/u4:3+events_unbound	19:50:59	0
1546072	99	84	76,6	cyclictest	1544813	-21	kworker/u4:0+events_unbound	19:15:51	0
1546073	99	83	79,2	cyclictest	1568758	-21	kworker/u4:4+events_unbound	21:56:28	1
1546073	99	83	53,16	cyclictest	0	-21	swapper/1	23:00:25	1
1546072	99	82	75,5	cyclictest	1544813	-21	kworker/u4:0+events_unbound	19:20:52	0
1546072	99	82	75,5	cyclictest	1314296	-21	kworker/u4:13+events_unbound	19:30:55	0
1546073	99	81	71,7	cyclictest	1679388	-21	kworker/u4:0+events_unbound	23:31:42	1
1546073	99	78	70,6	cyclictest	1600353	-21	kworker/u4:8+events_unbound	21:36:21	1
1546073	99	78	10,23	cyclictest	1704173	-21	ssh	23:35:34	1
1546072	99	78	71,5	cyclictest	1640279	-21	kworker/u4:7+events_unbound	22:41:35	0
1546073	99	74	67,5	cyclictest	1578701	-21	kworker/u4:7+events_unbound	21:26:22	1
1546072	99	73	66,5	cyclictest	1549830	-21	kworker/u4:11+events_unbound	19:25:54	0
1546073	99	70	61,6	cyclictest	1661643	-21	kworker/u4:11+events_unbound	23:15:00	1
1546073	99	68	63,3	cyclictest	1568758	-21	kworker/u4:4+events_unbound	20:41:10	1
1546073	99	68	63,3	cyclictest	1567501	-21	kworker/u4:19+events_unbound	20:36:09	1
1546072	99	68	62,5	cyclictest	1556136	-21	kworker/u4:7+events_unbound	20:06:02	0
1546072	99	67	62,4	cyclictest	1631442	-21	kworker/u4:2+events_unbound	22:16:32	0
1546072	99	67	62,4	cyclictest	1631442	-21	kworker/u4:2+events_unbound	22:16:32	0
1546072	99	67	43,18	cyclictest	1626990	-21	kworker/u4:3-xprtiod	22:10:11	0
1546073	99	66	49,5	cyclictest	1536112	-21	kworker/u4:7+events_unbound	19:35:00	1
1546073	99	65	58,5	cyclictest	1568758	-21	kworker/u4:4+events_unbound	21:35:00	1
1546072	99	65	58,5	cyclictest	1536112	-21	kworker/u4:7+events_unbound	19:40:56	0
1546072	99	63	55,5	cyclictest	0	-21	swapper/0	21:33:33	0
1546073	99	62	57,3	cyclictest	1562437	-21	kworker/u4:13+events_unbound	20:21:06	1
1546073	99	62	54,6	cyclictest	1679388	-21	kworker/u4:0+events_unbound	23:46:44	1
1546072	99	62	55,5	cyclictest	1583152	-21	kworker/u4:13+events_unbound	21:29:59	0
1546072	99	62	52,8	cyclictest	388	-21	dbus-daemon	00:36:56	0
1546072	99	61	54,5	cyclictest	1640279	-21	kworker/u4:7+events_unbound	23:16:39	0
1546073	99	60	2,52	cyclictest	1669214	-21	ssh	22:55:32	1
1546072	99	60	53,5	cyclictest	1533512	-21	kworker/u4:5+events_unbound	19:35:55	0
1546073	99	59	52,5	cyclictest	1631442	-21	kworker/u4:2+events_unbound	22:36:34	1
1546073	99	59	52,5	cyclictest	1631442	-21	kworker/u4:2+events_unbound	22:36:33	1
1546073	99	59	51,6	cyclictest	1608442	-21	/usr/sbin/munin	21:45:35	1
1546072	99	59	52,5	cyclictest	1679388	-21	kworker/u4:0+events_unbound	23:31:07	0
1546072	99	59	48,8	cyclictest	1577000	-21	df	21:10:17	0
1546072	99	59	45,7	cyclictest	1649094	-21	kworker/u4:10+events_unbound	22:45:59	0
1546072	99	59	43,13	cyclictest	1704369	-21	sendmail_mailtr	23:35:39	0
1546072	99	59	33,9	cyclictest	1640278	-21	kworker/u4:6+events_unbound	22:39:09	0
1546072	99	59	33,9	cyclictest	1640278	-21	kworker/u4:6+events_unbound	22:39:09	0
1546073	99	58	50,6	cyclictest	1736039	-21	kworker/u4:8+events_unbound	00:26:56	1
1546072	99	58	52,4	cyclictest	1556136	-21	kworker/u4:7+events_unbound	20:11:03	0
1546072	99	57	50,5	cyclictest	1599099	-21	/usr/sbin/munin	21:35:21	0
1546072	99	57	47,6	cyclictest	1724757	-21	latency_hist	00:00:00	0
1546073	99	56	48,5	cyclictest	0	-21	swapper/1	22:40:24	1
1546072	99	56	49,5	cyclictest	1727360	-21	kworker/u4:12+events_unbound	00:25:42	0
1546073	99	55	46,7	cyclictest	1622399	-21	systemd	22:01:29	1
1546072	99	55	35,18	cyclictest	1712334	-21	df_abs	23:45:17	0
1546073	99	54	8,27	cyclictest	1546821	-21	sshd	19:10:34	1
1546073	99	54	47,5	cyclictest	1564985	-21	kworker/u4:2+events_unbound	20:46:11	1
1546072	99	54	45,7	cyclictest	1679388	-21	kworker/u4:0+events_unbound	00:03:44	0
1546072	99	54	45,6	cyclictest	1546069	-21	cyclictest	00:31:58	0
1546073	99	53	43,8	cyclictest	1665900	-21	systemd	22:51:34	1
1546072	99	53	47,5	cyclictest	1666079	-21	kworker/u4:0+events_unbound	22:59:00	0
1546072	99	53	45,6	cyclictest	1683855	-21	kworker/u4:8+events_unbound	23:13:44	0
1546072	99	53	44,5	cyclictest	0	-21	swapper/0	00:10:38	0
1546072	99	52	42,8	cyclictest	1623227	-21	kworker/u4:0+events_unbound	22:08:01	0
1546073	99	51	42,6	cyclictest	1721337	-21	/usr/sbin/munin	23:55:23	1
1546072	99	51	44,5	cyclictest	1644669	-21	kworker/u4:0+events_unbound	22:30:45	0
1546072	99	51	41,7	cyclictest	1717569	-21	timerandwakeup	23:50:42	0
1546072	99	51	36,8	cyclictest	0	-21	swapper/0	23:40:15	0
1546073	99	50	43,5	cyclictest	1729914	-21	ssh	00:05:26	1
1546073	99	50	43,5	cyclictest	1568758	-21	kworker/u4:4+events_unbound	20:50:02	1
1546073	99	50	43,5	cyclictest	1533512	-21	kworker/u4:5+events_unbound	20:11:01	1
1546073	99	50	41,7	cyclictest	1751428	-21	/usr/sbin/munin	00:30:28	1
1546073	99	50	38,7	cyclictest	0	-21	swapper/1	23:50:43	1
1546072	99	50	44,4	cyclictest	1714260	-21	kworker/u4:5+events_unbound	00:18:59	0
1546072	99	50	43,5	cyclictest	1578702	-21	kworker/u4:10+events_unbound	21:18:00	0
1546072	99	50	31,10	cyclictest	1578701	-21	kworker/u4:7+events_unbound	21:23:46	0
1546073	99	49	43,4	cyclictest	1629029	-21	latency_hist	22:10:01	1
1546073	99	49	42,5	cyclictest	0	-21	swapper/1	23:05:16	1
1546073	99	49	41,6	cyclictest	1642157	-21	latency_hist	22:25:02	1
1546072	99	49	42,5	cyclictest	1631443	-21	kworker/u4:5+events_unbound	22:28:00	0
1546072	99	49	42,5	cyclictest	1533512	-21	kworker/u4:5+events_unbound	20:31:08	0
1546072	99	49	33,6	cyclictest	1567501	-21	kworker/u4:19+events_unbound	21:07:44	0
1546073	99	48	41,5	cyclictest	1647864	-21	grep	22:30:38	1
1546073	99	48	41,5	cyclictest	1561182	-21	kworker/u4:1+events_unbound	20:20:00	1
1546073	99	48	40,6	cyclictest	1581541	-21	fschecks_time	21:15:19	1
1546073	99	48	39,7	cyclictest	1613084	-21	unixbench-2d	21:50:39	1
1546072	99	48	6,40	cyclictest	0	-21	swapper/0	20:50:09	0
1546072	99	48	41,5	cyclictest	1614410	-21	kworker/u4:12+events_unbound	21:52:42	0
1546072	99	48	41,5	cyclictest	1544816	-21	kworker/u4:3+events_unbound	19:45:45	0
1546072	99	48	40,6	cyclictest	1692757	-21	kworker/u4:10+events_unbound	23:27:44	0
1546072	99	48	39,5	cyclictest	1746142	-21	munin-plugin-st	00:25:01	0
1546073	99	47	40,5	cyclictest	1755481	-21	gltestperf	00:35:22	1
1546073	99	47	40,5	cyclictest	1714260	-21	kworker/u4:5+events_unbound	00:20:30	1
1546073	99	47	38,7	cyclictest	1605501	-21	kworker/u4:10+events_unbound	22:19:43	1
1546073	99	47	38,7	cyclictest	1605501	-21	kworker/u4:10+events_unbound	22:19:43	1
1546072	99	47	39,6	cyclictest	1603545	-21	/usr/sbin/munin	21:40:20	0
1546072	99	47	39,6	cyclictest	1603545	-21	/usr/sbin/munin	21:40:20	0
1546072	99	47	38,7	cyclictest	1607849	-21	fschecks_count	21:45:19	0
1546073	99	46	9,22	cyclictest	1068	-21	snmpd	21:40:28	1
1546073	99	46	9,22	cyclictest	1068	-21	snmpd	21:40:27	1
1546073	99	46	40,4	cyclictest	1708478	-21	ntp_kernel_pll_	23:40:28	1
1546073	99	46	39,5	cyclictest	1575201	-21	munin-plugin-st	21:05:00	1
1546073	99	46	38,6	cyclictest	1554171	-21	gltestperf	19:40:17	1
1546073	99	46	38,5	cyclictest	1555383	-21	fschecks_time	19:45:21	1
1546072	99	46	40,4	cyclictest	15	1	ktimers/0	20:36:37	0
1546072	99	46	38,5	cyclictest	1729989	-21	ssh	00:05:28	0
1546073	99	45	40,3	cyclictest	1714258	-21	kworker/u4:3+events_unbound	00:15:28	1
1546073	99	45	39,4	cyclictest	1546069	-21	cyclictest	22:26:32	1
1546073	99	45	36,7	cyclictest	1566233	-21	systemd	20:26:04	1
1546073	99	45	36,7	cyclictest	1553673	-21	latency_hist	19:40:01	1
1546072	99	45	36,7	cyclictest	1572869	-21	aten_r7power_cu	20:55:19	0
1546072	99	45	32,6	cyclictest	1568762	-21	kworker/u4:6+events_unbound	21:04:24	0
1546072	99	45	31,9	cyclictest	1565008	-21	modprobe	20:25:00	0
1546073	99	44	38,4	cyclictest	1691433	-21	unixbench-2d	23:20:37	1
1546073	99	44	37,5	cyclictest	1068	-21	snmpd	20:00:00	1
1546073	99	44	35,6	cyclictest	1548824	-21	aten_r7power_cu	19:20:14	1
1546073	99	44	34,8	cyclictest	1578482	-21	sshd	21:11:17	1
1546072	99	44	38,4	cyclictest	1570097	-21	latency_hist	20:45:01	0
1546073	99	43	37,4	cyclictest	1548607	-21	idleruntime-cro	19:20:01	1
1546073	99	43	35,5	cyclictest	1533512	-21	kworker/u4:5+rpciod	21:10:01	1
1546073	99	43	34,6	cyclictest	0	-21	swapper/1	23:15:19	1
1546073	99	43	33,6	cyclictest	1731074	-21	kworker/u4:14-rpciod	00:11:48	1
1546072	99	43	37,5	cyclictest	1568758	-21	kworker/u4:4+events_unbound	20:48:34	0
1546072	99	43	35,6	cyclictest	1547082	-21	timerandwakeup	19:10:43	0
1546073	99	42	3,34	cyclictest	1586216	-21	ssh	21:20:22	1
1546073	99	42	32,7	cyclictest	1559693	-21	threads	20:00:35	1
1546073	99	42	32,6	cyclictest	0	-21	swapper/1	20:30:36	1
1546073	99	41	32,7	cyclictest	1660907	-21	unixbench_multi	22:45:41	1
1546073	99	41	31,7	cyclictest	1551052	-21	unixbench_singl	19:25:35	1
1546073	99	41	30,9	cyclictest	1573884	-21	systemd	20:56:13	1
1546073	99	39	31,5	cyclictest	1546006	-21	kworker/u4:4-rpciod	19:10:01	1
1546073	99	39	31,5	cyclictest	1544816	-21	kworker/u4:3-rpciod	19:50:35	1
1546073	99	37	31,4	cyclictest	1560410	-21	fschecks_time	20:05:23	1
1546072	99	37	29,5	cyclictest	1546006	-21	kworker/u4:4+events_unbound	19:10:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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