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 Apr 23, 2026 12:46:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3190038	99	145	131,7	cyclictest	3203880	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	07:50:31	1
3190033	99	131	25,36	cyclictest	3262757	-21	cat	09:30:01	0
3190033	99	124	1,90	cyclictest	0	-21	swapper/0	11:10:12	0
3190059	99	118	113,2	cyclictest	0	-21	swapper/5	10:01:00	5
3190033	99	118	68,35	cyclictest	3350901	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:46:53	0
3190033	99	118	37,54	cyclictest	3215269	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:10:45	0
3190052	99	117	111,3	cyclictest	0	-21	swapper/4	10:21:02	4
3190052	99	116	110,3	cyclictest	0	-21	swapper/4	07:45:27	4
3190052	99	116	102,7	cyclictest	3241830	-21	diskmemload-4	11:26:22	4
3190033	99	116	1,92	cyclictest	0	-21	swapper/0	08:17:22	0
3190052	99	115	110,2	cyclictest	0	-21	swapper/4	07:15:14	4
3190033	99	115	62,39	cyclictest	3238487	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:17:48	0
3190033	99	115	27,32	cyclictest	3330253	-21	ssh	10:20:36	0
3190033	99	115	1,91	cyclictest	0	-21	swapper/0	07:40:51	0
3190033	99	115	1,91	cyclictest	0	-21	swapper/0	07:36:37	0
3190033	99	115	1,91	cyclictest	0	-21	swapper/0	07:36:36	0
3190033	99	115	1,91	cyclictest	0	-21	swapper/0	07:26:42	0
3190033	99	111	35,41	cyclictest	692	50	irq/530-eth0-Tx	10:25:21	0
3190052	99	110	104,3	cyclictest	0	-21	swapper/4	10:26:03	4
3190033	99	110	78,24	cyclictest	3238487	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:10:53	0
3190033	99	105	63,34	cyclictest	3375736	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:40:06	0
3190052	99	104	98,3	cyclictest	0	-21	swapper/4	09:45:55	4
3190033	99	103	64,18	cyclictest	3314392	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:01:18	0
3190033	99	103	64,18	cyclictest	3314392	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:01:18	0
3190033	99	103	1,55	cyclictest	0	-21	swapper/0	12:25:23	0
3190033	99	103	1,55	cyclictest	0	-21	swapper/0	12:25:22	0
3190033	99	102	16,5	cyclictest	3402107	-21	ssh	11:15:26	0
3190052	99	101	95,3	cyclictest	0	-21	swapper/4	09:40:56	4
3190033	99	101	68,16	cyclictest	3463705	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:06:26	0
3190033	99	100	67,17	cyclictest	3399541	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:38:42	0
3190033	99	100	67,17	cyclictest	3399541	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:38:41	0
3190033	99	100	65,18	cyclictest	3375736	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:06:29	0
3190033	99	100	65,18	cyclictest	3375736	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:06:29	0
3190033	99	100	58,15	cyclictest	3208087	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:00:55	0
3190052	99	99	92,3	cyclictest	0	-21	swapper/4	10:55:34	4
3190052	99	99	92,3	cyclictest	0	-21	swapper/4	10:55:34	4
3190033	99	99	1,77	cyclictest	0	-21	swapper/0	09:00:53	0
3190052	99	98	93,2	cyclictest	0	-21	swapper/4	11:41:23	4
3190052	99	98	83,9	cyclictest	3361700	-21	ssh	10:45:08	4
3190038	99	98	83,8	cyclictest	3503133	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:36:30	1
3190038	99	98	83,8	cyclictest	3503133	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:36:30	1
3190033	99	98	62,16	cyclictest	3238487	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:22:23	0
3190033	99	98	34,15	cyclictest	0	-21	swapper/0	09:45:31	0
3190033	99	98	1,92	cyclictest	0	-21	swapper/0	07:51:10	0
3190052	99	97	85,7	cyclictest	3241830	-21	diskmemload-4	10:50:19	4
3190052	99	97	85,7	cyclictest	3241830	-21	diskmemload-4	10:50:18	4
3190048	99	97	83,7	cyclictest	3399541	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:21:27	3
3190043	99	96	67,7	cyclictest	3399541	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:24:29	2
3190033	99	96	59,17	cyclictest	3314392	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:39:04	0
3190033	99	96	1,62	cyclictest	0	-21	swapper/0	07:33:56	0
3190033	99	95	63,16	cyclictest	3399541	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:29:38	0
3190033	99	95	30,28	cyclictest	3324623	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:19:07	0
3190052	99	94	82,7	cyclictest	3493009	-21	ssh	12:25:08	4
3190052	99	94	82,7	cyclictest	3493009	-21	ssh	12:25:07	4
3190052	99	93	88,2	cyclictest	0	-21	swapper/4	07:40:22	4
3190052	99	93	84,4	cyclictest	3258699	-21	ssh	09:26:01	4
3190033	99	93	15,6	cyclictest	692	50	irq/530-eth0-Tx	10:10:36	0
3190033	99	93	15,6	cyclictest	692	50	irq/530-eth0-Tx	10:10:36	0
3190059	99	92	86,3	cyclictest	0	-21	swapper/5	12:30:28	5
3190059	99	92	85,3	cyclictest	0	-21	swapper/5	10:11:00	5
3190059	99	92	85,3	cyclictest	0	-21	swapper/5	10:11:00	5
3190043	99	92	79,7	cyclictest	3386597	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:15:35	2
3190038	99	92	78,7	cyclictest	3208087	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:00:36	1
3190033	99	92	2,6	cyclictest	3448393	-21	ntp_states	11:50:38	0
3190033	99	92	1,3	cyclictest	0	-21	swapper/0	08:45:10	0
3190052	99	91	85,2	cyclictest	0	-21	swapper/4	11:49:14	4
3190052	99	91	85,2	cyclictest	0	-21	swapper/4	11:49:14	4
3190033	99	91	56,4	cyclictest	0	-21	swapper/0	08:34:59	0
3190033	99	91	2,61	cyclictest	3303721	-21	gcc	10:00:30	0
3190033	99	91	22,29	cyclictest	0	-21	swapper/0	10:40:42	0
3190033	99	91	1,85	cyclictest	0	-21	swapper/0	12:30:42	0
3190033	99	91	1,85	cyclictest	0	-21	swapper/0	07:47:42	0
3190033	99	91	1,65	cyclictest	0	-21	swapper/0	10:55:49	0
3190033	99	91	1,65	cyclictest	0	-21	swapper/0	10:55:49	0
3190059	99	90	81,5	cyclictest	0	-21	swapper/5	09:55:27	5
3190052	99	90	84,3	cyclictest	0	-21	swapper/4	09:21:34	4
3190052	99	90	71,12	cyclictest	3487578	-21	ssh	12:20:28	4
3190048	99	90	75,7	cyclictest	3399541	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:55:41	3
3190048	99	90	41,21	cyclictest	3426946	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	12:34:25	3
3190033	99	90	9,8	cyclictest	690	50	irq/528-eth0-Tx	10:30:10	0
3190033	99	90	2,57	cyclictest	3427885	-21	df_abs	11:35:19	0
3190033	99	90	1,62	cyclictest	0	-21	swapper/0	07:58:21	0
3190052	99	89	77,7	cyclictest	3395750	-21	ssh	11:10:32	4
3190033	99	89	45,3	cyclictest	0	-21	swapper/0	07:19:59	0
3190059	99	88	82,3	cyclictest	0	-21	swapper/5	07:44:06	5
3190059	99	88	81,3	cyclictest	0	-21	swapper/5	09:28:14	5
3190033	99	88	13,7	cyclictest	3374108	-21	taskset	10:54:45	0
3190033	99	88	13,7	cyclictest	3374108	-21	taskset	10:54:45	0
3190052	99	87	77,6	cyclictest	3425531	-21	ssh	11:33:32	4
3190052	99	87	75,6	cyclictest	3472520	-21	ssh	12:09:35	4
3190048	99	87	73,7	cyclictest	3484654	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:25:33	3
3190048	99	87	73,7	cyclictest	3484654	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:25:33	3
3190048	99	87	73,7	cyclictest	3222686	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	08:30:34	3
3190033	99	87	8,6	cyclictest	3263064	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:42:37	0
3190033	99	87	1,81	cyclictest	0	-21	swapper/0	07:23:09	0
3190033	99	87	1,81	cyclictest	0	-21	swapper/0	07:23:08	0
3190033	99	87	1,76	cyclictest	0	-21	swapper/0	09:07:39	0
3190059	99	86	79,3	cyclictest	0	-21	swapper/5	11:22:15	5
3190052	99	86	81,2	cyclictest	0	-21	swapper/4	09:34:24	4
3190048	99	86	73,7	cyclictest	3426946	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:46:24	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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