OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack7slot2.osadl.org (updated Sun Dec 28, 2025 12:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3997942	99	221	199,15	cyclictest	54	-21	kswapd0	09:55:10	0
3997944	99	109	93,11	cyclictest	4095275	-21	kworker/u4:5+events_unbound	10:30:30	1
3997944	99	107	96,8	cyclictest	4031141	-21	kworker/u4:6+events_unbound	09:15:14	1
3997944	99	105	93,8	cyclictest	4028285	-21	kworker/u4:1+events_unbound	09:20:14	1
3997942	99	105	90,12	cyclictest	54	-21	kswapd0	10:15:34	0
3997944	99	103	94,6	cyclictest	4060616	-21	kworker/u4:12+events_unbound	09:50:16	1
3997944	99	97	89,6	cyclictest	4162503	-21	kworker/u4:0+events_unbound	12:11:00	1
3997944	99	93	78,5	cyclictest	4116083	-21	kworker/u4:13+events_unbound	11:10:41	1
3997944	99	92	83,6	cyclictest	54	-21	kswapd0	09:40:19	1
3997944	99	88	79,6	cyclictest	4095275	-21	kworker/u4:5+events_unbound	10:45:31	1
3997944	99	88	78,7	cyclictest	54	-21	kswapd0	11:09:59	1
3997942	99	88	83,3	cyclictest	4179574	-21	kworker/u4:13+events_unbound	12:26:00	0
3997944	99	83	56,22	cyclictest	54	-21	kswapd0	12:05:07	1
3997944	99	82	75,5	cyclictest	4174685	-21	kworker/u4:11+events_unbound	12:21:02	1
3997942	99	82	74,5	cyclictest	54	-21	kswapd0	10:05:15	0
3997942	99	81	54,20	cyclictest	54	-21	kswapd0	12:05:07	0
3997944	99	76	67,6	cyclictest	4013140	-21	kworker/u4:11+events_unbound	08:20:00	1
3997944	99	76	66,7	cyclictest	4056886	-21	kworker/u4:10+events_unbound	10:50:34	1
3997944	99	75	68,5	cyclictest	4001703	-21	kworker/u4:15+events_unbound	07:59:57	1
3997944	99	75	67,5	cyclictest	4023241	-21	kworker/u4:4+events_unbound	08:50:06	1
3997944	99	75	66,6	cyclictest	4005468	-21	kworker/u4:4+events_unbound	07:40:02	1
3997944	99	75	65,7	cyclictest	3984314	-21	kworker/u4:3+events_unbound	07:55:00	1
3997944	99	73	65,6	cyclictest	4048119	-21	kworker/u4:0+events_unbound	10:10:24	1
3997944	99	71	52,6	cyclictest	4095272	-21	kworker/u4:0+events_unbound	10:35:31	1
3997944	99	70	63,5	cyclictest	4028289	-21	kworker/u4:2+events_unbound	10:00:22	1
3997944	99	70	62,6	cyclictest	3997892	-21	kworker/u4:0+events_unbound	07:20:01	1
3997944	99	70	61,6	cyclictest	54	-21	kswapd0	11:20:00	1
3997944	99	70	61,6	cyclictest	54	-21	kswapd0	11:20:00	1
3997942	99	70	55,13	cyclictest	4054890	-21	sshd	09:40:18	0
3997942	99	70	35,20	cyclictest	0	-21	swapper/0	10:55:30	0
3997944	99	69	62,5	cyclictest	4018198	-21	kworker/u4:6+events_unbound	08:40:05	1
3997942	99	69	61,5	cyclictest	4166745	-21	kworker/u4:1+events_unbound	12:00:58	0
3997944	99	68	61,6	cyclictest	4166745	-21	kworker/u4:1+events_unbound	12:36:03	1
3997942	99	67	59,6	cyclictest	4052517	-21	kworker/u4:11+events_unbound	09:50:19	0
3997942	99	66	37,23	cyclictest	255	50	irq/23-42890000.ethernet	07:50:19	0
3997944	99	65	59,4	cyclictest	54	-21	kswapd0	12:30:12	1
3997944	99	65	59,4	cyclictest	4018197	-21	kworker/u4:5+events_unbound	09:00:08	1
3997944	99	65	58,5	cyclictest	3984314	-21	kworker/u4:3+events_unbound	08:55:08	1
3997944	99	64	57,5	cyclictest	4162506	-21	kworker/u4:6+events_unbound	11:50:03	1
3997944	99	64	57,5	cyclictest	4162506	-21	kworker/u4:6+events_unbound	11:50:02	1
3997944	99	64	56,6	cyclictest	4001702	-21	kworker/u4:14+events_unbound	08:09:57	1
3997944	99	63	54,7	cyclictest	4073735	-21	kworker/u4:3+events_unbound	10:15:33	1
3997944	99	61	53,5	cyclictest	4006749	-21	kworker/u4:7+events_unbound	08:05:01	1
3997944	99	61	45,10	cyclictest	4046827	-21	ntp_states	09:30:35	1
3997944	99	59	55,2	cyclictest	4166745	-21	kworker/u4:1+events_unbound	12:00:14	1
3997944	99	59	52,5	cyclictest	3984314	-21	kworker/u4:3+events_unbound	07:34:53	1
3997944	99	59	50,7	cyclictest	4050859	-21	/usr/sbin/munin	09:35:23	1
3997944	99	58	50,6	cyclictest	4179574	-21	kworker/u4:13+events_unbound	12:25:15	1
3997942	99	58	48,7	cyclictest	4149706	-21	kworker/u4:18+events_unbound	11:45:53	0
3997944	99	57	49,6	cyclictest	54	-21	kswapd0	11:04:59	1
3997944	99	56	52,3	cyclictest	4137490	-21	kworker/u4:5+events_unbound	11:35:36	1
3997944	99	56	47,6	cyclictest	4162503	-21	kworker/u4:0+events_unbound	11:50:00	1
3997942	99	56	8,25	cyclictest	4131599	-21	ssh	11:10:25	0
3997942	99	56	7,29	cyclictest	4157034	-21	sh	11:40:32	0
3997942	99	56	47,6	cyclictest	4034170	-21	unixbench_multi	09:15:37	0
3997944	99	55	48,5	cyclictest	4141744	-21	kworker/u4:14+events_unbound	11:25:46	1
3997944	99	55	4,10	cyclictest	17	1	rcu_preempt	10:05:34	1
3997944	99	55	33,19	cyclictest	27	1	ktimers/1	08:45:26	1
3997942	99	55	7,13	cyclictest	4059167	-21	df_inode	09:45:17	0
3997942	99	55	47,6	cyclictest	54	-21	kswapd0	09:35:34	0
3997944	99	54	47,5	cyclictest	4103840	-21	kworker/u4:3+events_unbound	10:40:31	1
3997944	99	54	47,5	cyclictest	4103840	-21	kworker/u4:3+events_unbound	10:40:30	1
3997944	99	54	40,4	cyclictest	3984314	-21	kworker/u4:3+events_unbound	08:40:00	1
3997942	99	54	48,4	cyclictest	54	-21	kswapd0	12:35:01	0
3997942	99	54	40,8	cyclictest	4010633	-21	modprobe	08:00:00	0
3997944	99	53	45,6	cyclictest	54	-21	kswapd0	11:00:02	1
3997942	99	53	46,5	cyclictest	54	-21	kswapd0	11:35:01	0
3997942	99	53	4,24	cyclictest	4122913	-21	fschecks_time	11:00:21	0
3997942	99	53	35,10	cyclictest	15	1	ktimers/0	11:20:11	0
3997944	99	52	45,5	cyclictest	4174684	-21	kworker/u4:10+events_unbound	12:16:00	1
3997944	99	52	45,5	cyclictest	4001703	-21	kworker/u4:15+events_unbound	07:25:01	1
3997944	99	52	43,6	cyclictest	4137489	-21	kworker/u4:4+events_unbound	11:20:05	1
3997944	99	52	40,8	cyclictest	0	-21	swapper/1	09:10:26	1
3997942	99	52	45,5	cyclictest	4038535	-21	unixbench_multi	09:20:39	0
3997944	99	51	44,5	cyclictest	3997903	-21	kworker/u4:2+events_unbound	07:44:54	1
3997942	99	51	42,7	cyclictest	4075796	-21	kworker/u4:8	10:05:01	0
3997942	99	51	21,4	cyclictest	4089686	-21	ntpq	10:20:35	0
3997942	99	51	17,6	cyclictest	9142	-21	ntpq	12:35:35	0
3997944	99	50	43,5	cyclictest	4042344	-21	gcc	09:25:26	1
3997944	99	50	42,6	cyclictest	54	-21	kswapd0	10:25:31	1
3997944	99	50	42,6	cyclictest	4133193	-21	kworker/u4:0+events_unbound	11:40:13	1
3997942	99	50	9,16	cyclictest	4104322	-21	ssh	10:38:15	0
3997942	99	50	40,8	cyclictest	4164890	-21	fschecks_count	11:50:19	0
3997942	99	50	40,8	cyclictest	4164890	-21	fschecks_count	11:50:18	0
3997942	99	50	39,8	cyclictest	4024233	-21	switchtime	08:50:35	0
3997944	99	49	42,5	cyclictest	54	-21	kswapd0	11:30:12	1
3997944	99	49	42,5	cyclictest	4068708	-21	timerwakeupswit	09:55:42	1
3997942	99	49	5,22	cyclictest	4186330	-21	ssh	12:15:34	0
3997942	99	49	41,5	cyclictest	4001700	-21	kworker/u4:12+events_unbound	07:35:02	0
3997942	99	49	39,7	cyclictest	4024909	-21	df_abs	08:55:16	0
3997942	99	49	28,19	cyclictest	4156017	-21	latency_hist	11:40:02	0
3997942	99	49	17,23	cyclictest	4046801	-21	ssh	09:30:33	0
3997944	99	48	42,4	cyclictest	4162507	-21	kworker/u4:7+events_unbound	11:56:09	1
3997944	99	48	41,5	cyclictest	4059300	-21	basename	09:45:19	1
3997942	99	48	9,15	cyclictest	4138157	-21	ssh	11:18:30	0
3997942	99	48	9,15	cyclictest	4138157	-21	ssh	11:18:29	0
3997942	99	48	9,15	cyclictest	4013939	-21	ntpq	08:10:27	0
3997942	99	48	5,18	cyclictest	4093884	-21	ntpq	10:25:32	0
3997942	99	48	40,6	cyclictest	4000435	-21	kworker/u4:5	07:19:59	0
3997942	99	48	38,7	cyclictest	4020784	-21	latency_hist	08:40:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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