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 Sat Feb 07, 2026 00:46:36)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
548648	2	1337	1311,16	sleep4	0	-21	swapper/4	19:05:39	4
549204	2	283	264,8	sleep0	549105	-21	kworker/0:1+events@ dbs_work_handler	19:07:43	0
549536	99	144	13,80	cyclictest	581711	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:55:33	0
549536	99	138	2,104	cyclictest	555480	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:44:21	0
549558	99	127	122,2	cyclictest	0	-21	swapper/5	22:01:47	5
549558	99	127	122,2	cyclictest	0	-21	swapper/5	22:01:46	5
549536	99	126	2,5	cyclictest	703406	-21	ssh	22:35:13	0
549536	99	126	2,5	cyclictest	703406	-21	ssh	22:35:12	0
549536	99	124	2,96	cyclictest	0	-21	swapper/0	21:44:35	0
549536	99	124	15,79	cyclictest	553424	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:23:23	0
549536	99	124	15,79	cyclictest	553424	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:23:23	0
549540	99	122	108,7	cyclictest	563262	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	19:51:12	1
549536	99	120	28,59	cyclictest	691	50	irq/529-eth0-Tx	22:25:30	0
549536	99	120	11,81	cyclictest	0	-21	swapper/0	23:45:00	0
549536	99	120	1,100	cyclictest	0	-21	swapper/0	23:09:41	0
549536	99	118	5,100	cyclictest	48	-21	rcuop/4	21:26:35	0
549536	99	118	45,13	cyclictest	0	-21	swapper/0	23:30:22	0
549536	99	118	1,103	cyclictest	0	-21	swapper/0	20:10:37	0
549536	99	117	2,105	cyclictest	0	-21	swapper/0	23:50:33	0
549536	99	117	2,105	cyclictest	0	-21	swapper/0	23:50:32	0
549540	99	116	102,7	cyclictest	647809	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:17:02	1
549540	99	116	102,7	cyclictest	647809	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:17:02	1
549536	99	116	60,42	cyclictest	587501	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:20:22	0
549536	99	116	60,42	cyclictest	587501	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:20:22	0
549540	99	114	101,6	cyclictest	729450	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:57:00	1
549536	99	114	72,38	cyclictest	145	50	irq/98-imx_mu_c	00:00:30	0
549536	99	114	34,58	cyclictest	647809	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:51:40	0
549536	99	114	1,95	cyclictest	0	-21	swapper/0	23:47:39	0
549545	99	113	100,6	cyclictest	567382	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:56:12	2
549540	99	112	99,6	cyclictest	695060	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:31:53	1
549540	99	112	99,6	cyclictest	695060	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:31:52	1
549536	99	112	63,39	cyclictest	690	50	irq/528-eth0-Tx	19:55:03	0
549536	99	112	2,97	cyclictest	0	-21	swapper/0	23:38:43	0
549536	99	112	1,35	cyclictest	0	-21	swapper/0	23:03:16	0
549558	99	111	104,3	cyclictest	0	-21	swapper/5	23:27:04	5
549536	99	111	63,38	cyclictest	689	50	irq/527-eth0-Tx	20:40:21	0
549536	99	111	63,38	cyclictest	689	50	irq/527-eth0-Tx	20:40:21	0
549536	99	111	47,39	cyclictest	0	-21	swapper/0	20:49:11	0
549536	99	111	27,30	cyclictest	691	50	irq/529-eth0-Tx	21:45:31	0
549536	99	111	2,5	cyclictest	584910	-21	ntpq	20:35:35	0
549536	99	111	25,65	cyclictest	608494	-21	idleruntime-cro	21:20:01	0
549536	99	111	10,51	cyclictest	692	50	irq/530-eth0-Tx	23:25:14	0
549536	99	110	46,36	cyclictest	0	-21	swapper/0	19:50:21	0
549536	99	110	2,87	cyclictest	0	-21	swapper/0	19:45:27	0
549536	99	109	2,93	cyclictest	0	-21	swapper/0	19:15:37	0
549536	99	109	2,86	cyclictest	550037	-21	cat	19:10:18	0
549536	99	109	2,85	cyclictest	815453	-21	ssh	00:05:46	0
549554	99	108	95,8	cyclictest	857064	-21	ssh	00:40:01	4
549536	99	108	71,25	cyclictest	0	-21	swapper/0	20:20:17	0
549536	99	108	66,31	cyclictest	650	-21	jbd2/mmcblk1p3-	19:30:14	0
549536	99	108	21,39	cyclictest	0	-21	swapper/0	00:20:44	0
549536	99	108	21,39	cyclictest	0	-21	swapper/0	00:20:43	0
549536	99	107	64,34	cyclictest	691	50	irq/529-eth0-Tx	20:15:13	0
549536	99	107	64,29	cyclictest	690	50	irq/528-eth0-Tx	21:05:23	0
549536	99	107	63,29	cyclictest	0	-21	swapper/0	20:05:35	0
549536	99	107	48,40	cyclictest	660432	-21	ntp_states	22:00:36	0
549536	99	107	48,40	cyclictest	660432	-21	ntp_states	22:00:36	0
549536	99	106	63,31	cyclictest	0	-21	swapper/0	00:00:01	0
549536	99	106	63,30	cyclictest	690	50	irq/528-eth0-Tx	20:00:36	0
549536	99	106	58,29	cyclictest	689	50	irq/527-eth0-Tx	21:55:20	0
549536	99	106	58,29	cyclictest	689	50	irq/527-eth0-Tx	21:55:20	0
549536	99	106	49,40	cyclictest	0	-21	swapper/0	20:50:53	0
828737	2	105	0,3	sleep3	0	-21	swapper/3	00:16:28	3
549545	99	105	93,6	cyclictest	551400	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:16:06	2
549536	99	105	2,58	cyclictest	753294	-21	ssh	23:15:29	0
549536	99	105	2,58	cyclictest	753294	-21	ssh	23:15:28	0
549536	99	105	1,52	cyclictest	0	-21	swapper/0	00:30:33	0
549540	99	104	82,8	cyclictest	750416	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:53:14	1
549540	99	104	82,8	cyclictest	750416	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:53:13	1
549536	99	104	2,5	cyclictest	582431	-21	df_inode	20:30:19	0
549536	99	104	1,84	cyclictest	0	-21	swapper/0	21:32:43	0
549545	99	103	92,5	cyclictest	581711	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:51:21	2
549536	99	103	66,25	cyclictest	689	50	irq/527-eth0-Tx	22:16:14	0
549536	99	103	59,33	cyclictest	0	-21	swapper/0	21:00:25	0
549536	99	103	58,34	cyclictest	690	50	irq/528-eth0-Tx	21:10:47	0
549536	99	103	51,11	cyclictest	0	-21	swapper/0	20:25:33	0
549536	99	103	51,11	cyclictest	0	-21	swapper/0	20:25:33	0
549536	99	103	1,59	cyclictest	48	-21	rcuop/4	21:51:34	0
549536	99	102	58,28	cyclictest	0	-21	swapper/0	22:07:34	0
549536	99	102	1,86	cyclictest	0	-21	swapper/0	19:37:21	0
549536	99	102	1,86	cyclictest	0	-21	swapper/0	19:37:21	0
549536	99	102	1,61	cyclictest	0	-21	swapper/0	00:15:40	0
549536	99	101	59,26	cyclictest	0	-21	swapper/0	22:24:12	0
549536	99	101	46,37	cyclictest	0	-21	swapper/0	23:23:43	0
549536	99	101	46,37	cyclictest	0	-21	swapper/0	23:23:42	0
549536	99	101	29,55	cyclictest	692	50	irq/530-eth0-Tx	00:11:24	0
549536	99	101	2,84	cyclictest	597972	-21	diskmemload	00:25:44	0
549536	99	101	2,5	cyclictest	710560	-21	ntpq	22:40:36	0
549536	99	100	26,38	cyclictest	689	50	irq/527-eth0-Tx	21:35:31	0
684543	2	99	0,4	sleep3	0	-21	swapper/3	22:20:04	3
549554	99	99	93,3	cyclictest	0	-21	swapper/4	19:55:05	4
549554	99	99	89,5	cyclictest	847875	-21	ssh	00:31:49	4
549536	99	99	55,5	cyclictest	597972	-21	diskmemload	22:59:22	0
549536	99	99	1,64	cyclictest	852121	-21	/usr/sbin/munin	00:35:25	0
549536	99	99	1,46	cyclictest	0	-21	swapper/0	22:10:10	0
549536	99	98	45,40	cyclictest	0	-21	swapper/0	19:26:27	0
549536	99	98	2,55	cyclictest	0	-21	swapper/0	22:45:41	0
549536	99	98	1,7	cyclictest	752588	-21	idleruntime-cro	23:15:01	0
804357	2	97	0,4	sleep2	0	-21	swapper/2	23:57:04	2
549536	99	97	54,31	cyclictest	0	-21	swapper/0	22:30:47	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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