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 Fri Sep 04, 2026 00:46:37)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
32897	99	130	57,56	cyclictest	63002	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:27:43	0
32897	99	130	57,56	cyclictest	63002	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:27:43	0
32897	99	119	1,66	cyclictest	0	-21	swapper/0	23:00:36	0
32920	99	118	112,3	cyclictest	0	-21	swapper/5	19:22:32	5
32897	99	113	1,92	cyclictest	0	-21	swapper/0	19:50:45	0
32897	99	105	82,16	cyclictest	33200	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:22:32	0
32897	99	105	51,23	cyclictest	0	-21	swapper/0	22:38:40	0
322893	2	103	0,6	chrt	0	-21	swapper/3	00:12:26	3
32920	99	102	96,3	cyclictest	0	-21	swapper/5	23:03:16	5
32897	99	102	4,71	cyclictest	292994	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:55:01	0
272450	2	101	0,4	sleep5	0	-21	swapper/5	23:35:00	5
32897	99	99	62,22	cyclictest	673	50	irq/527-eth0-Tx	00:01:47	0
32897	99	99	27,58	cyclictest	0	-21	swapper/0	22:55:28	0
32897	99	99	27,58	cyclictest	0	-21	swapper/0	22:55:28	0
32897	99	99	1,84	cyclictest	39149	-21	/usr/sbin/munin	19:25:41	0
32897	99	99	1,3	cyclictest	0	-21	swapper/0	21:21:43	0
32897	99	99	1,3	cyclictest	0	-21	swapper/0	21:21:43	0
32897	99	98	42,39	cyclictest	675	50	irq/529-eth0-Tx	23:55:22	0
32897	99	98	1,63	cyclictest	156366	-21	kworker/u12:1+rpciod@ rpc_async_schedule	22:15:01	0
32897	99	98	1,63	cyclictest	156366	-21	kworker/u12:1+rpciod@ rpc_async_schedule	22:15:01	0
32897	99	98	1,34	cyclictest	112446	-21	cut	21:35:00	0
32897	99	98	1,34	cyclictest	112446	-21	cut	21:35:00	0
218210	2	98	0,5	chrt	0	-21	swapper/0	22:54:14	0
218210	2	98	0,5	chrt	0	-21	swapper/0	22:54:14	0
32897	99	97	19,62	cyclictest	0	-21	swapper/0	22:15:15	0
32897	99	97	19,62	cyclictest	0	-21	swapper/0	22:15:14	0
32897	99	96	1,83	cyclictest	46382	-21	timerandwakeup	19:40:43	0
32897	99	96	1,64	cyclictest	0	-21	swapper/0	23:06:28	0
32897	99	96	14,77	cyclictest	13	-21	ksoftirqd/0	00:15:13	0
32906	99	95	83,6	cyclictest	85229	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:18:06	2
32906	99	95	83,6	cyclictest	85229	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:18:06	2
32902	99	94	78,7	cyclictest	282305	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:43:22	1
32920	99	93	86,3	cyclictest	0	-21	swapper/5	20:27:43	5
32920	99	93	86,3	cyclictest	0	-21	swapper/5	20:27:43	5
32897	99	93	1,24	cyclictest	0	-21	swapper/0	00:06:36	0
32897	99	92	52,29	cyclictest	0	-21	swapper/0	00:31:30	0
32897	99	92	1,58	cyclictest	0	-21	swapper/0	22:00:19	0
32897	99	92	13,55	cyclictest	13	-21	ksoftirqd/0	00:15:00	0
32914	99	91	86,2	cyclictest	0	-21	swapper/4	00:13:26	4
32897	99	91	60,21	cyclictest	674	50	irq/528-eth0-Tx	23:38:49	0
32897	99	90	2,72	cyclictest	0	-21	swapper/0	19:16:46	0
32897	99	90	1,84	cyclictest	0	-21	swapper/0	20:20:31	0
32920	99	89	82,3	cyclictest	0	-21	swapper/5	22:58:15	5
32920	99	89	82,3	cyclictest	0	-21	swapper/5	22:58:15	5
32897	99	89	1,76	cyclictest	0	-21	swapper/0	23:18:17	0
32902	99	88	73,8	cyclictest	111892	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:48:01	1
32897	99	88	17,46	cyclictest	0	-21	swapper/0	21:28:00	0
32897	99	88	17,46	cyclictest	0	-21	swapper/0	21:28:00	0
32897	99	88	1,71	cyclictest	15	-21	rcuc/0	23:10:22	0
32897	99	88	1,60	cyclictest	13	-21	ksoftirqd/0	00:20:15	0
32897	99	88	1,60	cyclictest	13	-21	ksoftirqd/0	00:20:15	0
32910	99	87	74,6	cyclictest	342786	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:33:30	3
32897	99	87	52,23	cyclictest	675	50	irq/529-eth0-Tx	22:40:29	0
32897	99	87	30,45	cyclictest	156366	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:08:52	0
32897	99	86	58,12	cyclictest	0	-21	swapper/0	23:40:14	0
32897	99	86	5,30	cyclictest	127758	-21	sed	21:45:42	0
32897	99	86	1,58	cyclictest	13	-21	ksoftirqd/0	21:15:14	0
32910	99	85	73,6	cyclictest	292994	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:18:28	3
32897	99	85	55,20	cyclictest	0	-21	swapper/0	22:25:11	0
32897	99	85	26,36	cyclictest	112982	-21	apt-get	21:35:17	0
32897	99	85	26,36	cyclictest	112982	-21	apt-get	21:35:17	0
32897	99	85	1,24	cyclictest	0	-21	swapper/0	23:25:34	0
32897	99	84	49,24	cyclictest	0	-21	swapper/0	19:35:16	0
32910	99	83	69,7	cyclictest	183832	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:43:13	3
32897	99	83	41,27	cyclictest	0	-21	swapper/0	22:35:01	0
32897	99	83	1,61	cyclictest	0	-21	swapper/0	23:21:25	0
32897	99	82	50,23	cyclictest	0	-21	swapper/0	20:00:17	0
32897	99	82	39,14	cyclictest	673	50	irq/527-eth0-Tx	21:40:34	0
32897	99	82	2,62	cyclictest	0	-21	swapper/0	22:20:36	0
32897	99	82	1,23	cyclictest	13	-21	ksoftirqd/0	21:50:46	0
32897	99	81	47,26	cyclictest	73412	-21	latency_hist	20:50:01	0
32897	99	80	9,16	cyclictest	13	-21	ksoftirqd/0	00:35:18	0
32897	99	80	3,5	cyclictest	676	50	irq/530-eth0-Tx	22:45:32	0
32897	99	80	32,3	cyclictest	0	-21	swapper/0	00:25:17	0
32897	99	80	1,4	cyclictest	33847	-21	ntpq	19:10:27	0
32920	99	79	73,3	cyclictest	0	-21	swapper/5	22:50:48	5
32920	99	79	73,3	cyclictest	0	-21	swapper/5	22:50:47	5
32897	99	79	3,55	cyclictest	13	-21	ksoftirqd/0	21:10:14	0
32897	99	79	28,35	cyclictest	140365	-21	kworker/0:0+events@ free_work	21:55:46	0
32897	99	79	26,3	cyclictest	673	50	irq/527-eth0-Tx	23:30:17	0
32897	99	79	1,3	cyclictest	0	-21	swapper/0	23:45:10	0
32920	99	78	72,2	cyclictest	0	-21	swapper/5	22:40:45	5
32920	99	77	69,5	cyclictest	0	-21	swapper/5	19:40:01	5
32914	99	77	65,6	cyclictest	84821	-21	diskmemload-4	23:28:20	4
32910	99	77	65,6	cyclictest	263891	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	23:38:22	3
32910	99	77	63,7	cyclictest	30627	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:12:30	3
32906	99	77	67,4	cyclictest	85229	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:43:00	2
32897	99	77	52,11	cyclictest	0	-21	swapper/0	20:31:25	0
32897	99	76	7,52	cyclictest	13	-21	ksoftirqd/0	20:55:30	0
32897	99	74	50,12	cyclictest	0	-21	swapper/0	20:50:41	0
32920	99	73	68,2	cyclictest	0	-21	swapper/5	23:08:17	5
32920	99	73	67,3	cyclictest	0	-21	swapper/5	00:23:28	5
32920	99	73	67,3	cyclictest	0	-21	swapper/5	00:23:27	5
32920	99	73	67,2	cyclictest	0	-21	swapper/5	23:50:37	5
32920	99	73	66,3	cyclictest	0	-21	swapper/5	22:38:10	5
32920	99	72	66,2	cyclictest	0	-21	swapper/5	20:40:31	5
32920	99	72	66,2	cyclictest	0	-21	swapper/5	20:40:31	5
32914	99	72	59,8	cyclictest	212728	-21	ssh	22:50:07	4
32914	99	72	59,8	cyclictest	212728	-21	ssh	22:50:06	4
32902	99	72	58,7	cyclictest	42713	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:37:35	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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