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 Jul 02, 2026 00:46:30)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3443188	2	1591	1570,9	sleep3	3432134	-21	kworker/3:3+events@ dbs_work_handler	19:05:30	3
3443247	2	1022	1000,11	sleep1	3441412	-21	kworker/1:3+events@ dbs_work_handler	19:05:34	1
3444233	99	133	99,26	cyclictest	3696548	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:18:40	0
3444233	99	124	85,20	cyclictest	3718403	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:28:42	0
3444233	99	121	83,19	cyclictest	3437683	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:45:23	0
3444233	99	121	83,19	cyclictest	3437683	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:45:22	0
3444233	99	119	79,20	cyclictest	3618561	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:06:01	0
3444233	99	119	79,20	cyclictest	3618561	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:06:01	0
3444233	99	116	81,16	cyclictest	3484465	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:35:45	0
3444233	99	111	2,97	cyclictest	0	-21	swapper/0	20:30:39	0
3716200	2	109	0,4	chrt	0	-21	swapper/5	00:10:23	5
3444233	99	106	2,85	cyclictest	0	-21	swapper/0	19:55:00	0
3444233	99	105	85,15	cyclictest	210	-21	kswapd0	00:30:10	0
3444233	99	105	85,15	cyclictest	210	-21	kswapd0	00:30:09	0
3444251	99	104	96,4	cyclictest	0	-21	swapper/4	00:18:40	4
3444233	99	103	73,13	cyclictest	673	50	irq/527-eth0-Tx	21:55:23	0
3444233	99	103	2,90	cyclictest	0	-21	swapper/0	23:45:39	0
3444233	99	100	2,85	cyclictest	0	-21	swapper/0	22:47:15	0
3444251	99	99	82,11	cyclictest	3740499	-21	ssh	00:30:09	4
3444251	99	99	82,11	cyclictest	3740499	-21	ssh	00:30:09	4
3444233	99	99	2,82	cyclictest	3480079	-21	unixbench_singl	20:35:43	0
3444233	99	99	2,82	cyclictest	3480079	-21	unixbench_singl	20:35:42	0
3444233	99	99	1,82	cyclictest	3530044	-21	processes	21:40:41	0
3444233	99	98	52,39	cyclictest	3521580	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:04:46	0
3444233	99	98	2,80	cyclictest	0	-21	swapper/0	20:05:13	0
3444233	99	98	24,22	cyclictest	674	50	irq/528-eth0-Tx	23:37:03	0
3619906	2	97	0,5	chrt	0	-21	swapper/2	22:52:40	2
3444233	99	97	63,21	cyclictest	676	50	irq/530-eth0-Tx	23:25:35	0
3444233	99	97	1,84	cyclictest	0	-21	swapper/0	23:11:25	0
3444233	99	96	64,22	cyclictest	673	50	irq/527-eth0-Tx	22:22:33	0
3444233	99	96	62,24	cyclictest	673	50	irq/527-eth0-Tx	21:16:55	0
3444233	99	96	55,26	cyclictest	3484528	-21	sed	20:50:01	0
3444233	99	93	72,17	cyclictest	210	-21	kswapd0	21:25:27	0
3444233	99	93	72,17	cyclictest	210	-21	kswapd0	21:25:26	0
3444233	99	93	61,23	cyclictest	0	-21	swapper/0	20:10:35	0
3444233	99	93	57,24	cyclictest	674	50	irq/528-eth0-Tx	21:30:39	0
3444233	99	93	57,24	cyclictest	674	50	irq/528-eth0-Tx	21:30:39	0
3444233	99	93	2,75	cyclictest	3604654	-21	missed_timers	22:40:25	0
3444233	99	92	2,63	cyclictest	0	-21	swapper/0	23:55:18	0
3444233	99	92	2,63	cyclictest	0	-21	swapper/0	23:55:17	0
3444251	99	91	77,10	cyclictest	3523990	-21	ssh	21:35:45	4
3444233	99	91	59,21	cyclictest	675	50	irq/529-eth0-Tx	20:15:12	0
3444233	99	90	58,22	cyclictest	673	50	irq/527-eth0-Tx	19:55:19	0
3444233	99	90	1,74	cyclictest	0	-21	swapper/0	22:29:45	0
3444233	99	89	67,13	cyclictest	674	50	irq/528-eth0-Tx	21:50:17	0
3444233	99	89	51,22	cyclictest	0	-21	swapper/0	20:20:27	0
3444233	99	89	50,23	cyclictest	0	-21	swapper/0	21:10:37	0
3444233	99	89	2,65	cyclictest	0	-21	swapper/0	22:05:43	0
3444233	99	89	2,15	cyclictest	3485587	-21	ntpq	20:50:33	0
3444251	99	88	82,3	cyclictest	0	-21	swapper/4	00:28:43	4
3444233	99	88	61,13	cyclictest	0	-21	swapper/0	20:55:39	0
3444233	99	88	57,21	cyclictest	0	-21	swapper/0	19:30:37	0
3444233	99	88	55,23	cyclictest	0	-21	swapper/0	21:47:38	0
3444233	99	88	2,58	cyclictest	3622193	-21	latency_hist	22:55:01	0
3444233	99	88	1,64	cyclictest	0	-21	swapper/0	22:15:23	0
3444233	99	87	54,21	cyclictest	674	50	irq/528-eth0-Tx	23:54:26	0
3444233	99	87	54,21	cyclictest	674	50	irq/528-eth0-Tx	23:54:25	0
3444233	99	87	49,27	cyclictest	3729908	-21	timerwakeupswit	00:20:46	0
3444233	99	87	46,23	cyclictest	0	-21	swapper/0	20:28:08	0
3444233	99	86	50,24	cyclictest	673	50	irq/527-eth0-Tx	22:35:23	0
3444233	99	86	46,13	cyclictest	0	-21	swapper/0	20:40:40	0
3444233	99	85	57,20	cyclictest	3696548	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:06:19	0
3444233	99	85	52,21	cyclictest	674	50	irq/528-eth0-Tx	19:10:22	0
3444233	99	85	50,23	cyclictest	674	50	irq/528-eth0-Tx	19:15:31	0
3444233	99	85	2,15	cyclictest	3567327	-21	ssh	22:10:27	0
3444233	99	85	2,15	cyclictest	3567327	-21	ssh	22:10:26	0
3444233	99	85	1,59	cyclictest	0	-21	swapper/0	23:20:20	0
3444251	99	84	79,3	cyclictest	0	-21	swapper/4	19:45:22	4
3444251	99	84	79,3	cyclictest	0	-21	swapper/4	19:45:22	4
3444247	99	84	70,7	cyclictest	3484465	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:45:47	3
3444233	99	84	58,13	cyclictest	675	50	irq/529-eth0-Tx	20:00:33	0
3444233	99	84	58,13	cyclictest	675	50	irq/529-eth0-Tx	20:00:32	0
3444233	99	84	57,13	cyclictest	0	-21	swapper/0	22:55:39	0
3444233	99	84	2,15	cyclictest	3505684	-21	ssh	21:20:57	0
3444233	99	83	45,23	cyclictest	0	-21	swapper/0	19:35:36	0
3444233	99	83	44,23	cyclictest	0	-21	swapper/0	23:34:25	0
3444233	99	83	39,25	cyclictest	0	-21	swapper/0	22:30:33	0
3444233	99	83	1,13	cyclictest	3716734	-21	ssh	00:10:34	0
3444251	99	82	76,3	cyclictest	0	-21	swapper/4	23:06:02	4
3444251	99	82	76,3	cyclictest	0	-21	swapper/4	23:06:01	4
3444233	99	82	59,20	cyclictest	3689833	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:03:32	0
3444233	99	82	2,13	cyclictest	3630124	-21	ssh	23:00:42	0
3444233	99	82	2,13	cyclictest	3630124	-21	ssh	23:00:41	0
3444233	99	82	2,12	cyclictest	0	-21	swapper/0	00:35:36	0
3444233	99	81	57,16	cyclictest	3618561	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:16:02	0
3444233	99	81	1,62	cyclictest	0	-21	swapper/0	19:20:16	0
3444251	99	79	69,5	cyclictest	0	-21	swapper/4	21:25:27	4
3444251	99	79	69,5	cyclictest	0	-21	swapper/4	21:25:27	4
3444242	99	77	63,7	cyclictest	3492385	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:15:45	2
3444242	99	77	62,8	cyclictest	3707691	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:10:16	2
3444233	99	77	55,19	cyclictest	3478797	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:05:43	0
3444233	99	77	41,12	cyclictest	0	-21	swapper/0	19:27:21	0
3444251	99	76	70,3	cyclictest	0	-21	swapper/4	21:55:23	4
3444233	99	76	42,24	cyclictest	0	-21	swapper/0	19:40:33	0
3444233	99	75	54,17	cyclictest	3657075	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:40:56	0
3444242	99	74	62,6	cyclictest	3478797	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:40:48	2
3444242	99	74	53,8	cyclictest	3571624	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:20:12	2
3444251	99	73	63,6	cyclictest	3541459	-21	ssh	21:50:17	4
3444242	99	73	60,6	cyclictest	3502328	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:30:46	2
3444242	99	73	60,6	cyclictest	3502328	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:30:46	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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