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 Thu Jan 22, 2026 00:46:48)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4066210	2	3596	3574,7	sleep3	4065350	-21	kworker/3:1+events@ dbs_work_handler	19:05:23	3
4067537	99	122	107,7	cyclictest	4063302	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:16:28	2
4067527	99	115	92,15	cyclictest	4085282	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:06:50	0
4067537	99	112	98,7	cyclictest	4169898	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:57:01	2
4067548	99	111	106,2	cyclictest	0	-21	swapper/4	21:06:50	4
4067527	99	111	50,46	cyclictest	4122955	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:17:29	0
4067527	99	111	50,46	cyclictest	4122955	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:17:28	0
4067527	99	110	85,17	cyclictest	4113733	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:11:51	0
4067532	99	108	94,7	cyclictest	4109556	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:51:48	1
4067527	99	108	44,29	cyclictest	84644	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:24:00	0
4067527	99	107	55,44	cyclictest	77091	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:35:37	0
4067537	99	105	91,8	cyclictest	4096113	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:30:36	2
4067537	99	105	91,8	cyclictest	4096113	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:30:35	2
4067548	99	104	99,2	cyclictest	0	-21	swapper/4	21:11:51	4
4067527	99	104	45,51	cyclictest	4096113	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:30:30	0
4067527	99	104	45,51	cyclictest	4096113	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:30:29	0
4067527	99	104	40,56	cyclictest	4179773	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:10:17	0
4067527	99	104	40,56	cyclictest	4179773	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:10:16	0
4067527	99	100	53,37	cyclictest	4067521	-21	cyclictest	19:35:18	0
4067537	99	99	85,7	cyclictest	4096113	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:40:34	2
4067527	99	98	62,28	cyclictest	36332	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:56:34	0
4067527	99	98	62,28	cyclictest	36332	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:56:34	0
4067537	99	96	82,7	cyclictest	4122955	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:52:00	2
4067527	99	95	49,39	cyclictest	4130390	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:32:47	0
4067537	99	94	67,10	cyclictest	29721	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:00:14	2
4067537	99	94	67,10	cyclictest	29721	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:00:13	2
4067543	99	93	65,9	cyclictest	36332	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:52:04	3
4067543	99	93	65,9	cyclictest	36332	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:52:03	3
4067537	99	93	79,7	cyclictest	4113733	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:10:34	2
4067527	99	93	26,35	cyclictest	0	-21	swapper/0	21:59:04	0
4067537	99	92	79,7	cyclictest	42509	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:22:21	2
4067537	99	92	78,7	cyclictest	63204	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:06:35	2
4067537	99	91	78,7	cyclictest	4085282	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:46:47	2
4067527	99	91	8,4	cyclictest	4152174	-21	apt-get	21:40:13	0
4067527	99	91	8,4	cyclictest	4152174	-21	apt-get	21:40:12	0
4067548	99	90	85,2	cyclictest	0	-21	swapper/4	23:37:24	4
4067527	99	90	67,7	cyclictest	63204	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:12:12	0
4067527	99	90	67,7	cyclictest	63204	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:12:12	0
4067537	99	89	74,8	cyclictest	4085282	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:50:34	2
4067537	99	88	76,6	cyclictest	142448	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:13:35	2
4067537	99	88	76,6	cyclictest	142448	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:13:35	2
4067548	99	87	81,3	cyclictest	0	-21	swapper/4	00:12:12	4
4067548	99	87	81,3	cyclictest	0	-21	swapper/4	00:12:12	4
4067537	99	87	72,8	cyclictest	142448	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:38:40	2
4067537	99	87	72,8	cyclictest	142448	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:38:40	2
4067527	99	87	59,8	cyclictest	4116385	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:20:34	0
4067548	99	86	75,6	cyclictest	4119346	-21	diskmemload-4	23:30:34	4
4067548	99	86	75,6	cyclictest	4119346	-21	diskmemload-4	23:30:34	4
4067537	99	86	72,7	cyclictest	142448	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:30:21	2
4067548	99	85	80,2	cyclictest	0	-21	swapper/4	22:11:35	4
4067548	99	85	80,2	cyclictest	0	-21	swapper/4	22:11:34	4
4067537	99	85	73,6	cyclictest	4069271	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:21:31	2
4067537	99	85	71,7	cyclictest	4079471	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:15:11	2
4067537	99	85	71,7	cyclictest	4079471	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:15:11	2
4067537	99	84	69,8	cyclictest	4122955	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:15:20	2
4067537	99	84	69,8	cyclictest	4122955	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:15:19	2
4067527	99	84	50,7	cyclictest	42509	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:15:36	0
4067548	99	83	71,6	cyclictest	149906	-21	ssh	00:15:36	4
4067537	99	83	71,6	cyclictest	4122955	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:36:11	2
4067527	99	83	56,7	cyclictest	4085282	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:20:24	0
4067548	99	82	73,5	cyclictest	4128251	-21	ssh	21:20:35	4
4067537	99	82	69,7	cyclictest	4085282	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:25:56	2
4067537	99	82	67,8	cyclictest	42509	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:13:21	2
4067527	99	82	72,7	cyclictest	4082032	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:46:40	0
4067527	99	82	72,7	cyclictest	4082032	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:46:39	0
4067527	99	82	61,7	cyclictest	63204	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:30:34	0
4067527	99	82	61,7	cyclictest	63204	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:30:33	0
4067527	99	82	58,7	cyclictest	4071445	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:25:20	0
4067548	99	81	76,2	cyclictest	0	-21	swapper/4	22:56:34	4
4067548	99	81	76,2	cyclictest	0	-21	swapper/4	22:56:33	4
4067543	99	81	68,6	cyclictest	4085282	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:10:11	3
4067527	99	81	57,8	cyclictest	142448	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:15:36	0
4067527	99	81	50,16	cyclictest	4162915	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:27:45	0
4067527	99	81	34,6	cyclictest	13	-21	ksoftirqd/0	22:02:16	0
4067259	2	81	53,20	sleep4	0	-21	swapper/4	19:08:32	4
4067548	99	80	73,3	cyclictest	0	-21	swapper/4	20:47:38	4
4067548	99	80	66,9	cyclictest	135345	-21	ssh	00:04:15	4
4067548	99	80	66,9	cyclictest	135345	-21	ssh	00:04:15	4
4067527	99	80	50,27	cyclictest	4155884	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:53:37	0
4067548	99	79	68,6	cyclictest	81767	-21	ssh	23:20:21	4
4067548	99	79	64,8	cyclictest	67698	-21	ssh	23:09:02	4
4067532	99	79	65,7	cyclictest	4122955	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:55:49	1
4067527	99	79	65,7	cyclictest	4063302	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:19:43	0
4067527	99	79	32,27	cyclictest	690	50	irq/528-eth0-Tx	00:35:26	0
4067527	99	79	32,27	cyclictest	690	50	irq/528-eth0-Tx	00:35:26	0
4067548	99	78	72,3	cyclictest	0	-21	swapper/4	19:25:20	4
4067543	99	78	65,6	cyclictest	42509	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:12:18	3
4067537	99	78	65,7	cyclictest	4085282	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:56:49	2
4067537	99	78	65,7	cyclictest	4085282	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:56:48	2
4067537	99	78	64,7	cyclictest	4113733	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:20:17	2
4067537	99	78	51,8	cyclictest	4122955	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:29:12	2
4067532	99	78	61,9	cyclictest	4122955	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:05:39	1
4067527	99	78	66,8	cyclictest	4079471	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:40:34	0
4067553	99	77	71,3	cyclictest	0	-21	swapper/5	20:05:35	5
4067553	99	77	70,3	cyclictest	0	-21	swapper/5	23:58:24	5
4067548	99	77	71,2	cyclictest	0	-21	swapper/4	22:54:23	4
4067548	99	77	71,2	cyclictest	0	-21	swapper/4	22:54:23	4
4067537	99	77	63,7	cyclictest	63204	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:33:16	2
4067537	99	77	63,7	cyclictest	63204	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:33:16	2
4067532	99	77	65,6	cyclictest	142448	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:23:39	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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