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Default latency plot of system in rack #0, 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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack0slot2.osadl.org (updated Fri Aug 28, 2026 12:43:29)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3395195	2	97	0,1	sleep7	3395197	-21	cut	12:15:12	7
2696664	2	56	45,8	sleep5	0	-21	swapper/5	07:06:35	5
2696877	2	54	19,30	sleep7	0	-21	swapper/7	07:09:34	7
2696808	2	49	37,8	sleep4	0	-21	swapper/4	07:08:35	4
2696867	2	38	28,7	sleep6	0	-21	swapper/6	07:09:25	6
2697164	99	36	34,2	cyclictest	3229819	-21	kworker/u16:6+events_unbound	11:10:07	6
2761949	2	29	0,1	chrt	2761950	-21	kthreadcore	07:40:10	7
2697161	99	29	27,2	cyclictest	3270137	-21	kworker/u16:0+events_unbound	11:35:42	5
2697161	99	29	27,2	cyclictest	3229818	-21	kworker/u16:5+flush-8:0	11:24:52	5
2697161	99	26	24,2	cyclictest	2971951	-21	kworker/u16:1+events_unbound	09:25:05	5
2697164	99	25	23,2	cyclictest	3287284	-21	kworker/u16:1+flush-8:0	11:50:18	6
2697164	99	25	22,2	cyclictest	2925255	-21	kworker/u16:0+events_unbound	09:05:07	6
2697164	99	24	22,2	cyclictest	2971951	-21	kworker/u16:1+flush-8:0	09:54:47	6
2697161	99	23	21,2	cyclictest	2993249	-21	kworker/u16:4+events_unbound	10:03:37	5
3360882	2	22	0,1	chrt	3360883	-21	kthreadcore	12:00:14	7
2697161	99	22	20,2	cyclictest	2758465	-21	kworker/u16:1+flush-8:0	08:52:06	5
2697161	99	22	20,2	cyclictest	2020738	-21	kworker/u16:0+events_unbound	07:31:11	5
2697161	99	21	19,2	cyclictest	2993249	-21	kworker/u16:4+flush-8:0	09:30:29	5
2697161	99	21	19,2	cyclictest	2855652	-21	kworker/u16:6+events_unbound	08:41:42	5
2697161	99	21	19,2	cyclictest	2855652	-21	kworker/u16:6+events_unbound	08:41:42	5
2697161	99	21	19,2	cyclictest	2855652	-21	kworker/u16:6+events_unbound	08:31:46	5
2697161	99	21	19,2	cyclictest	2813108	-21	kworker/u16:0+flush-8:0	08:22:24	5
2697161	99	21	19,2	cyclictest	2768671	-21	kworker/u16:2+events_unbound	07:43:29	5
2697161	99	21	17,2	cyclictest	2993249	-21	kworker/u16:4+events_unbound	10:09:58	5
3193649	2	20	0,1	chrt	3193647	-21	ssh	10:53:54	7
3193649	2	20	0,1	chrt	3193647	-21	ssh	10:53:54	7
2697164	99	20	18,2	cyclictest	3227343	-21	kworker/u16:2+flush-8:0	11:20:22	6
2697161	99	20	18,2	cyclictest	2993249	-21	kworker/u16:4+events_unbound	09:44:59	5
2697161	99	20	18,2	cyclictest	2993249	-21	kworker/u16:4+events_unbound	09:34:59	5
2697161	99	20	18,2	cyclictest	2912133	-21	kworker/u16:4+events_unbound	08:55:50	5
2697161	99	20	18,2	cyclictest	2768671	-21	kworker/u16:2+flush-8:0	07:53:54	5
2697161	99	20	18,2	cyclictest	2758465	-21	kworker/u16:1+events_unbound	07:38:50	5
2697161	99	20	18,2	cyclictest	2676617	-21	kworker/u16:2+events_unbound	07:13:22	5
2697159	99	20	18,2	cyclictest	2925255	-21	kworker/u16:0+events_unbound	09:39:03	4
2697166	99	19	15,3	cyclictest	1277	-21	snmpd	12:28:14	7
2697166	99	19	15,3	cyclictest	1277	-21	snmpd	09:31:23	7
2697161	99	19	17,2	cyclictest	2912133	-21	kworker/u16:4+flush-8:0	09:08:17	5
2697161	99	19	17,2	cyclictest	2855652	-21	kworker/u16:6+events_unbound	08:38:42	5
2697161	99	19	17,2	cyclictest	2768671	-21	kworker/u16:2+flush-8:0	07:56:46	5
2697161	99	19	17,2	cyclictest	2758465	-21	kworker/u16:1+events_unbound	09:02:17	5
2697161	99	19	17,2	cyclictest	2758465	-21	kworker/u16:1+events_unbound	08:19:37	5
2697161	99	19	17,2	cyclictest	2686962	-21	kworker/u16:3+flush-8:0	07:19:59	5
2697159	99	19	17,2	cyclictest	2971951	-21	kworker/u16:1+events_unbound	09:40:23	4
2697166	99	18	11,5	cyclictest	648	-21	systemd-journal	11:49:52	7
2697164	99	18	16,2	cyclictest	3064812	-21	kworker/u16:1+flush-8:0	10:00:47	6
2697161	99	18	16,2	cyclictest	2768671	-21	kworker/u16:2+events_unbound	08:48:34	5
2697161	99	18	16,2	cyclictest	2758465	-21	kworker/u16:1+events_unbound	08:08:42	5
2697161	99	18	16,2	cyclictest	2686962	-21	kworker/u16:3+flush-8:0	08:10:52	5
2697159	99	18	16,2	cyclictest	3439396	-21	kworker/u16:2+events_unbound	12:39:18	4
2697159	99	18	16,2	cyclictest	3252516	-21	kworker/u16:3+events_unbound	11:17:47	4
2697159	99	18	16,2	cyclictest	3092951	-21	kworker/u16:0+events_unbound	10:42:50	4
2697159	99	18	16,2	cyclictest	2971951	-21	kworker/u16:1+events_unbound	09:48:12	4
2697159	99	18	16,2	cyclictest	2894673	-21	kworker/u16:3+events_unbound	09:10:10	4
2697166	99	17	13,3	cyclictest	1277	-21	snmpd	12:06:25	7
2697166	99	17	12,4	cyclictest	0	-21	swapper/7	10:15:14	7
2697164	99	17	15,2	cyclictest	3021665	-21	kworker/u16:2+events_unbound	10:34:47	6
2697161	99	17	15,2	cyclictest	2894673	-21	kworker/u16:3+flush-8:0	10:49:47	5
2697161	99	17	15,2	cyclictest	2813108	-21	kworker/u16:0+flush-8:0	08:25:28	5
2697161	99	17	15,2	cyclictest	2779905	-21	kworker/u16:4+events_unbound	08:03:06	5
2697159	99	17	15,2	cyclictest	3315430	-21	kworker/u16:2+events_unbound	11:41:47	4
2697159	99	17	15,2	cyclictest	2993249	-21	kworker/u16:4+events_unbound	09:32:58	4
2697159	99	17	15,2	cyclictest	2894673	-21	kworker/u16:3+events_unbound	09:21:38	4
2697159	99	17	15,2	cyclictest	2855652	-21	kworker/u16:6+events_unbound	09:16:07	4
3452375	2	16	0,1	sleep6	0	-21	swapper/6	12:37:23	6
2697166	99	16	15,0	cyclictest	0	-21	swapper/7	09:39:53	7
2697166	99	16	14,1	cyclictest	0	-21	swapper/7	08:10:15	7
2697166	99	16	13,2	cyclictest	1277	-21	snmpd	10:23:37	7
2697164	99	16	14,2	cyclictest	2686962	-21	kworker/u16:3+flush-8:0	07:10:07	6
2697161	99	16	14,2	cyclictest	3388630	-21	kworker/u16:2+events_unbound	12:17:31	5
2697161	99	16	14,2	cyclictest	3270137	-21	kworker/u16:0+flush-8:0	11:49:52	5
2697161	99	16	14,2	cyclictest	2768671	-21	kworker/u16:2+events_unbound	07:46:25	5
2697161	99	16	14,2	cyclictest	2706466	-21	kworker/u16:1+flush-8:0	07:17:21	5
2697159	99	16	14,2	cyclictest	3317983	-21	kworker/u16:4+events_unbound	12:13:03	4
2697159	99	16	14,2	cyclictest	3229818	-21	kworker/u16:5+events_unbound	11:29:38	4
2697159	99	16	14,2	cyclictest	3092951	-21	kworker/u16:0+events_unbound	10:13:07	4
2697166	99	15	9,5	cyclictest	648	-21	systemd-journal	11:00:51	7
2697166	99	15	7,7	cyclictest	6387	-21	gmain	10:49:14	7
2697166	99	15	6,8	cyclictest	5988	-21	gmain	11:57:42	7
2697166	99	15	12,2	cyclictest	5805	-21	gsd-housekeepin	09:24:58	7
2697166	99	15	0,13	cyclictest	1277	-21	snmpd	10:25:34	7
2697161	99	15	13,2	cyclictest	3227343	-21	kworker/u16:2+events_unbound	11:08:14	5
2697161	99	15	13,2	cyclictest	3138359	-21	kworker/u16:4+flush-8:0	10:30:52	5
2697161	99	15	13,2	cyclictest	3092951	-21	kworker/u16:0+flush-8:0	10:39:47	5
2697161	99	15	13,2	cyclictest	2894673	-21	kworker/u16:3+events_unbound	11:02:05	5
2697161	99	15	0,1	cyclictest	0	-21	swapper/5	10:05:38	5
2697159	99	15	13,2	cyclictest	3363975	-21	kworker/u16:0+events_unbound	12:29:38	4
2697159	99	15	13,2	cyclictest	3315430	-21	kworker/u16:2+events_unbound	11:53:15	4
2697159	99	15	13,2	cyclictest	3229818	-21	kworker/u16:5+events_unbound	11:32:55	4
2697159	99	15	13,2	cyclictest	3153644	-21	kworker/u16:1+events_unbound	10:45:46	4
2697159	99	15	13,2	cyclictest	2706466	-21	kworker/u16:1+events_unbound	07:17:03	4
2697159	99	15	12,2	cyclictest	6127	-21	gvfs-udisks2-vo	12:05:42	4
3406003	2	14	0,1	sleep7	3406006	-21	cut	12:20:09	7
2697166	99	14	12,1	cyclictest	0	-21	swapper/7	12:35:11	7
2697166	99	14	10,3	cyclictest	1277	-21	snmpd	08:31:28	7
2697166	99	14	0,12	cyclictest	3432869	-21	kthreadcore	12:30:11	7
2697166	99	14	0,12	cyclictest	3290088	-21	ntpq	11:30:22	7
2697166	99	14	0,12	cyclictest	3009369	-21	cat	09:40:03	7
2697164	99	14	13,1	cyclictest	0	-21	swapper/6	12:15:18	6
2697164	99	14	13,1	cyclictest	0	-21	swapper/6	11:30:23	6
2697164	99	14	13,1	cyclictest	0	-21	swapper/6	09:38:27	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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