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 Sep 17, 2026 00:46:38)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2588543	2	136	0,12	sleep0	13	-21	ksoftirqd/0	21:33:43	0
2588543	2	136	0,12	sleep0	13	-21	ksoftirqd/0	21:33:43	0
2657215	2	128	0,3	sleep3	0	-21	swapper/3	22:28:11	3
2511764	99	110	98,6	cyclictest	2521476	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:00:05	2
2511764	99	107	93,7	cyclictest	2790616	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:18:40	2
2511764	99	107	92,8	cyclictest	2556411	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:05:20	2
2511764	99	106	91,8	cyclictest	2556411	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:00:11	2
2511759	99	103	88,8	cyclictest	2521476	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:00:13	1
2511759	99	100	84,9	cyclictest	2647518	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:30:22	1
2511759	99	100	84,9	cyclictest	2647518	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:30:22	1
2523832	2	99	0,4	sleep0	0	-21	swapper/0	19:40:01	0
2511770	99	98	83,7	cyclictest	2705260	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:35:37	3
2511770	99	98	83,7	cyclictest	2705260	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:35:36	3
2511776	99	97	84,7	cyclictest	2563491	-21	diskmemload-4	22:55:29	4
2511755	99	94	55,19	cyclictest	2780555	-21	unixbench_multi	00:05:47	0
2511755	99	94	1,73	cyclictest	0	-21	swapper/0	23:10:18	0
2511755	99	92	28,15	cyclictest	0	-21	swapper/0	22:27:05	0
2511755	99	90	64,17	cyclictest	673	50	irq/527-eth0-Tx	23:50:19	0
2511755	99	90	54,20	cyclictest	0	-21	swapper/0	23:45:40	0
2511755	99	90	50,16	cyclictest	0	-21	swapper/0	00:20:41	0
2511755	99	90	50,16	cyclictest	0	-21	swapper/0	00:20:40	0
2511759	99	89	41,8	cyclictest	2615859	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:50:44	1
2511755	99	89	69,7	cyclictest	2539458	-21	grep	20:15:45	0
2511755	99	89	46,16	cyclictest	0	-21	swapper/0	20:20:33	0
2511776	99	87	74,7	cyclictest	2672925	-21	ssh	22:40:27	4
2511755	99	87	62,16	cyclictest	673	50	irq/527-eth0-Tx	21:45:35	0
2511755	99	87	61,17	cyclictest	673	50	irq/527-eth0-Tx	23:05:36	0
2759447	2	86	0,5	sleep4	2563491	-21	diskmemload-4	23:50:01	4
2511755	99	86	67,10	cyclictest	674	50	irq/528-eth0-Tx	23:30:01	0
2511755	99	86	67,10	cyclictest	674	50	irq/528-eth0-Tx	23:30:00	0
2511755	99	85	60,14	cyclictest	0	-21	swapper/0	19:25:14	0
2511755	99	85	54,28	cyclictest	2556411	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:12:45	0
2511755	99	85	1,59	cyclictest	0	-21	swapper/0	22:20:19	0
2511776	99	84	72,7	cyclictest	2563491	-21	diskmemload-4	22:19:19	4
2511759	99	84	74,7	cyclictest	210	-21	kswapd0	21:55:20	1
2511759	99	84	70,7	cyclictest	2647518	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:25:22	1
2511755	99	83	69,6	cyclictest	2521476	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:20:14	0
2511770	99	82	71,5	cyclictest	2647518	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:45:23	3
2511759	99	82	68,7	cyclictest	2521476	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:15:06	1
2511755	99	82	48,13	cyclictest	0	-21	swapper/0	00:30:21	0
2511776	99	81	75,3	cyclictest	0	-21	swapper/4	19:35:43	4
2511770	99	81	68,6	cyclictest	2774178	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:03:33	3
2511755	99	81	1,59	cyclictest	0	-21	swapper/0	21:16:58	0
2601333	2	80	0,4	sleep4	0	-21	swapper/4	21:44:05	4
2511776	99	80	69,6	cyclictest	2566313	-21	ssh	21:15:43	4
2511755	99	80	60,8	cyclictest	675	50	irq/529-eth0-Tx	20:55:21	0
2511755	99	80	44,29	cyclictest	2533674	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:05:22	0
2511755	99	80	44,29	cyclictest	2533674	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:05:22	0
2511755	99	80	42,16	cyclictest	0	-21	swapper/0	22:15:35	0
2511776	99	79	73,3	cyclictest	0	-21	swapper/4	21:10:33	4
2511776	99	79	73,3	cyclictest	0	-21	swapper/4	20:10:35	4
2511764	99	79	67,6	cyclictest	2521476	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:55:06	2
2511755	99	79	1,57	cyclictest	0	-21	swapper/0	00:00:36	0
2511776	99	78	67,7	cyclictest	2574739	-21	ssh	21:22:25	4
2511755	99	78	5,55	cyclictest	2791500	-21	ssh	00:15:16	0
2511755	99	78	2,50	cyclictest	0	-21	swapper/0	21:40:21	0
2511770	99	77	65,6	cyclictest	2808728	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:33:46	3
2511764	99	77	63,7	cyclictest	2738356	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:32:46	2
2511764	99	77	63,7	cyclictest	2738356	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:32:45	2
2511755	99	77	41,21	cyclictest	673	50	irq/527-eth0-Tx	22:38:17	0
2511755	99	77	41,21	cyclictest	673	50	irq/527-eth0-Tx	22:38:17	0
2511755	99	77	1,62	cyclictest	0	-21	swapper/0	00:14:51	0
2511776	99	76	70,2	cyclictest	0	-21	swapper/4	20:45:38	4
2511755	99	76	40,13	cyclictest	0	-21	swapper/0	20:50:33	0
2511755	99	76	40,13	cyclictest	0	-21	swapper/0	20:50:33	0
2511755	99	76	1,55	cyclictest	2661981	-21	ssh	22:31:34	0
2511755	99	76	1,55	cyclictest	2661981	-21	ssh	22:31:34	0
2648868	2	75	0,4	chrt	0	-21	swapper/4	22:20:45	4
2511776	99	74	63,6	cyclictest	2563491	-21	diskmemload-4	21:50:33	4
2511770	99	74	58,9	cyclictest	2607789	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:00:20	3
2511764	99	74	62,6	cyclictest	2675543	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:20:34	2
2511755	99	74	35,26	cyclictest	673	50	irq/527-eth0-Tx	21:38:05	0
2511755	99	74	35,26	cyclictest	673	50	irq/527-eth0-Tx	21:38:05	0
2511776	99	73	66,4	cyclictest	0	-21	swapper/4	23:08:54	4
2511776	99	73	64,5	cyclictest	2629116	-21	ssh	22:05:33	4
2511776	99	73	63,5	cyclictest	2563491	-21	diskmemload-4	00:40:01	4
2511764	99	73	51,9	cyclictest	2675543	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:12:45	2
2511759	99	73	59,7	cyclictest	2521476	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:45:04	1
2511755	99	73	53,9	cyclictest	15	-21	rcuc/0	21:10:25	0
2511755	99	73	42,11	cyclictest	2816699	-21	/usr/sbin/munin	00:35:21	0
2511755	99	73	32,24	cyclictest	673	50	irq/527-eth0-Tx	22:00:02	0
2511755	99	73	1,3	cyclictest	0	-21	swapper/0	23:17:23	0
2511776	99	72	66,2	cyclictest	0	-21	swapper/4	21:32:12	4
2511776	99	72	66,2	cyclictest	0	-21	swapper/4	21:32:11	4
2511776	99	72	65,3	cyclictest	0	-21	swapper/4	19:25:35	4
2511755	99	72	50,10	cyclictest	673	50	irq/527-eth0-Tx	22:05:29	0
2511755	99	72	46,15	cyclictest	674	50	irq/528-eth0-Tx	23:20:42	0
2511755	99	72	41,24	cyclictest	673	50	irq/527-eth0-Tx	19:50:33	0
2511755	99	72	2,50	cyclictest	0	-21	swapper/0	22:45:29	0
2511776	99	71	65,3	cyclictest	0	-21	swapper/4	20:35:27	4
2511776	99	71	65,3	cyclictest	0	-21	swapper/4	20:35:27	4
2511776	99	71	65,3	cyclictest	0	-21	swapper/4	19:45:39	4
2511764	99	71	57,7	cyclictest	2675543	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:34:46	2
2511755	99	71	60,3	cyclictest	0	-21	swapper/0	00:00:01	0
2511776	99	70	65,2	cyclictest	0	-21	swapper/4	19:50:43	4
2511776	99	70	63,4	cyclictest	0	-21	swapper/4	23:58:28	4
2511776	99	70	63,3	cyclictest	0	-21	swapper/4	00:05:38	4
2511776	99	70	59,6	cyclictest	2798778	-21	ssh	00:20:37	4
2511776	99	70	59,6	cyclictest	2798778	-21	ssh	00:20:36	4
2511776	99	70	58,7	cyclictest	2563491	-21	diskmemload-4	00:33:30	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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