OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #3, slot #4

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, lowest P state: performance

Characteristics of the 100 highest latencies:

System rack3slot4.osadl.org (updated Tue Apr 28, 2026 00:46:44)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1523583	99	152	51,69	cyclictest	1631998	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:10:15	0
1523583	99	152	51,69	cyclictest	1631998	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:10:14	0
1523583	99	136	72,46	cyclictest	1732740	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:05:16	0
1523583	99	135	78,38	cyclictest	1785045	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:25:15	0
1523583	99	135	78,38	cyclictest	1785045	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:25:15	0
1523583	99	131	45,34	cyclictest	689	50	irq/527-eth0-Tx	00:00:29	0
1523583	99	123	97,18	cyclictest	1665263	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:37:50	0
1523583	99	123	84,25	cyclictest	1806224	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:31:00	0
1523583	99	122	96,19	cyclictest	1712653	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:07:55	0
1523583	99	120	49,47	cyclictest	1682186	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:05:01	0
1523583	99	118	92,19	cyclictest	1576679	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:22:39	0
1523583	99	118	92,19	cyclictest	1576679	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:22:38	0
1523583	99	118	6,64	cyclictest	1703289	-21	date	22:55:02	0
1523583	99	118	6,64	cyclictest	1703289	-21	date	22:55:02	0
1523595	99	117	103,7	cyclictest	1618653	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:57:44	2
1523583	99	117	4,93	cyclictest	14	-21	rcu_preempt	00:10:40	0
1523590	99	116	102,7	cyclictest	1598886	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:37:41	1
1523583	99	116	90,19	cyclictest	1590392	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:32:41	0
1523583	99	116	56,37	cyclictest	1712653	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:22:53	0
1523583	99	114	55,41	cyclictest	1564159	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:00:26	0
1523583	99	112	7,91	cyclictest	0	-21	swapper/0	22:20:40	0
1523604	99	110	104,3	cyclictest	0	-21	swapper/4	22:37:50	4
1523604	99	109	103,3	cyclictest	0	-21	swapper/4	23:07:55	4
1523583	99	109	83,19	cyclictest	1527259	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	19:17:30	0
1523604	99	108	97,5	cyclictest	1599110	-21	ssh	21:32:41	4
1523604	99	108	91,5	cyclictest	1575279	-21	diskmemload-4	00:31:00	4
1523583	99	107	51,35	cyclictest	1785045	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:18:56	0
1523583	99	106	8,85	cyclictest	1724268	-21	sort	23:10:45	0
1523583	99	106	8,82	cyclictest	1760591	-21	aten2_r3power_c	23:40:17	0
1523583	99	106	4,51	cyclictest	0	-21	swapper/0	21:50:31	0
1523604	99	105	99,3	cyclictest	0	-21	swapper/4	21:22:39	4
1523604	99	105	99,3	cyclictest	0	-21	swapper/4	21:22:38	4
1523583	99	105	71,23	cyclictest	690	50	irq/528-eth0-Tx	19:15:00	0
1523583	99	105	38,43	cyclictest	1694859	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:58:29	0
1523583	99	105	38,43	cyclictest	1694859	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:58:28	0
1523583	99	104	80,17	cyclictest	1657773	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:41:02	0
1523583	99	103	47,33	cyclictest	1571418	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:10:35	0
1523590	99	102	91,5	cyclictest	1682186	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:50:45	1
1523590	99	102	91,5	cyclictest	1682186	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:50:44	1
1523590	99	102	88,7	cyclictest	1657773	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:29:35	1
1523583	99	102	5,62	cyclictest	0	-21	swapper/0	21:44:06	0
1523583	99	101	5,62	cyclictest	13	-21	ksoftirqd/0	00:35:36	0
1523590	99	100	87,6	cyclictest	1631998	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:08:34	1
1523590	99	100	87,6	cyclictest	1631998	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:08:33	1
1523590	99	99	85,7	cyclictest	1537561	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:59:34	1
1523590	99	99	65,8	cyclictest	1732740	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:07:49	1
1523583	99	99	35,20	cyclictest	692	50	irq/530-eth0-Tx	22:02:44	0
1523604	99	98	87,6	cyclictest	1686503	-21	ssh	22:41:01	4
1523583	99	98	6,77	cyclictest	0	-21	swapper/0	21:05:43	0
1523583	99	98	51,40	cyclictest	1547561	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	20:19:10	0
1523583	99	98	4,77	cyclictest	0	-21	swapper/0	20:09:36	0
1523590	99	97	84,6	cyclictest	1618653	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:51:34	1
1523590	99	97	66,7	cyclictest	1732740	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:34:59	1
1523590	99	97	66,7	cyclictest	1732740	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:34:59	1
1523583	99	97	60,26	cyclictest	0	-21	swapper/0	20:05:01	0
1523583	99	97	2,55	cyclictest	1571418	-21	kworker/u12:1+rpciod@ rpc_async_schedule	21:15:05	0
1523583	99	97	2,55	cyclictest	1571418	-21	kworker/u12:1+rpciod@ rpc_async_schedule	21:15:04	0
1523604	99	96	90,3	cyclictest	0	-21	swapper/4	19:17:29	4
1523583	99	96	30,47	cyclictest	0	-21	swapper/0	21:25:11	0
1523583	99	96	30,47	cyclictest	0	-21	swapper/0	21:25:11	0
1523604	99	95	85,5	cyclictest	1817656	-21	ssh	00:25:15	4
1523604	99	95	85,5	cyclictest	1817656	-21	ssh	00:25:15	4
1523590	99	95	82,7	cyclictest	1796208	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:32:35	1
1523590	99	94	80,7	cyclictest	1618653	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:02:47	1
1523583	99	94	70,17	cyclictest	1665263	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:45:35	0
1523583	99	94	68,19	cyclictest	1571418	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:35:29	0
1523583	99	94	5,70	cyclictest	1756092	-1	kworker/0:0H-events_highpri	23:49:45	0
1523583	99	94	5,53	cyclictest	1539624	-21	awk	19:50:00	0
1523583	99	94	4,59	cyclictest	13	-21	ksoftirqd/0	22:25:15	0
1523583	99	94	14,51	cyclictest	1614891	-21	/usr/sbin/munin	21:45:20	0
1523583	99	93	36,42	cyclictest	689	50	irq/527-eth0-Tx	22:15:40	0
1523583	99	93	36,42	cyclictest	689	50	irq/527-eth0-Tx	22:15:40	0
1523583	99	92	68,16	cyclictest	1732740	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:50:35	0
1523583	99	92	46,23	cyclictest	1712653	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:15:10	0
1523590	99	91	78,6	cyclictest	1576679	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:27:40	1
1523590	99	91	78,6	cyclictest	1576679	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:27:40	1
1523583	99	91	27,25	cyclictest	47	-21	rcuog/4	23:30:23	0
1523583	99	91	27,25	cyclictest	47	-21	rcuog/4	23:30:23	0
1523590	99	90	77,6	cyclictest	1546848	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:11:06	1
1523590	99	90	76,7	cyclictest	1785045	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:18:04	1
1523590	99	90	76,7	cyclictest	1650276	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:20:05	1
1523583	99	90	57,26	cyclictest	1682186	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:26:47	0
1523583	99	90	4,67	cyclictest	0	-21	swapper/0	23:35:19	0
1523583	99	90	4,67	cyclictest	0	-21	swapper/0	23:35:19	0
1523583	99	90	3,52	cyclictest	1667853	-21	kworker/0:1+events@ vmstat_shepherd	22:30:27	0
1523590	99	89	74,7	cyclictest	1524378	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:15:34	1
1523583	99	89	4,70	cyclictest	13	-21	ksoftirqd/0	23:56:42	0
1523583	99	88	4,53	cyclictest	0	-21	swapper/0	22:05:17	0
1523583	99	88	4,53	cyclictest	0	-21	swapper/0	22:05:16	0
1523604	99	87	76,6	cyclictest	1575279	-21	diskmemload-4	22:45:35	4
1523604	99	87	75,6	cyclictest	1602769	-21	ssh	21:35:28	4
1523595	99	87	59,9	cyclictest	1749770	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:35:35	2
1523595	99	87	59,9	cyclictest	1749770	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:35:35	2
1523590	99	87	74,7	cyclictest	1732740	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:13:35	1
1523590	99	87	73,7	cyclictest	1682186	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:08:01	1
1523590	99	87	73,6	cyclictest	1756038	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:42:45	1
1523583	99	87	61,19	cyclictest	1551737	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:20:34	0
1523583	99	87	61,19	cyclictest	1551737	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:20:33	0
1523583	99	87	24,24	cyclictest	13	-21	ksoftirqd/0	21:55:15	0
1523595	99	86	41,14	cyclictest	1822054	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:39:56	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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