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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 50 highest latencies:

System rack0slot2.osadl.org (updated Thu Dec 04, 2025 00:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3426716	99	60	52,7	cyclictest	589235	-21	systemd-journal	03:33:22	7
3426372	2	57	47,7	sleep5	0	-21	swapper/5	03:22:27	5
3426199	2	57	46,8	sleep4	0	-21	swapper/4	03:20:01	4
3426716	99	53	0,51	cyclictest	589235	-21	systemd-journal	03:47:45	7
3426125	2	48	38,7	sleep6	0	-21	swapper/6	03:18:59	6
3426716	99	47	0,45	cyclictest	3843582	-21	latency_hist	06:47:45	7
3426711	99	45	43,2	cyclictest	3984611	-21	kworker/u16:3+flush-8:0	08:13:12	5
3426707	99	45	42,2	cyclictest	3984611	-21	kworker/u16:3+events_unbound	08:13:15	4
3426716	99	41	35,5	cyclictest	4055269	-21	latency_hist	08:32:45	7
3426716	99	41	35,5	cyclictest	4055269	-21	latency_hist	08:32:45	7
3417508	2	41	3,32	sleep7	0	-21	swapper/7	03:18:04	7
3426707	99	40	37,3	cyclictest	3521217	-21	kworker/u16:0+flush-8:0	04:12:45	4
3426711	99	39	37,2	cyclictest	3682091	-21	kworker/u16:1+flush-8:0	05:53:11	5
3426707	99	38	36,2	cyclictest	3884305	-21	kworker/u16:1+events_unbound	07:26:27	4
3426711	99	37	35,2	cyclictest	3823142	-21	kworker/u16:3+events_unbound	06:53:12	5
3426707	99	37	35,2	cyclictest	3733219	-21	kworker/u16:2+flush-8:0	05:59:25	4
3426707	99	37	34,2	cyclictest	3984611	-21	kworker/u16:3+events_unbound	08:35:01	4
3426716	99	36	31,4	cyclictest	3914204	-21	latency_hist	07:22:45	7
3426715	99	36	34,2	cyclictest	3733219	-21	kworker/u16:2+events_unbound	06:18:15	6
3426707	99	36	34,2	cyclictest	3772863	-21	kworker/u16:3+events_unbound	06:16:27	4
3426707	99	36	34,2	cyclictest	3772863	-21	kworker/u16:3+events_unbound	06:16:27	4
3426707	99	36	33,2	cyclictest	3934712	-21	kworker/u16:4+events_unbound	07:37:26	4
3662791	2	35	0,1	sleep7	0	-21	swapper/7	05:17:58	7
3426711	99	35	33,2	cyclictest	3884305	-21	kworker/u16:1+events_unbound	07:52:26	5
3426707	99	35	33,2	cyclictest	3823142	-21	kworker/u16:3+events_unbound	06:56:56	4
3426707	99	35	33,2	cyclictest	3733219	-21	kworker/u16:2+flush-8:0	06:08:12	4
3426707	99	35	33,2	cyclictest	3591548	-21	kworker/u16:2+flush-8:0	04:47:45	4
3426707	99	35	33,2	cyclictest	3591548	-21	kworker/u16:2+flush-8:0	04:47:45	4
3426707	99	35	33,2	cyclictest	3433742	-21	kworker/u16:2+flush-8:0	04:03:12	4
3426707	99	35	32,2	cyclictest	3974439	-21	kworker/u16:0+events_unbound	07:52:48	4
3426711	99	34	32,2	cyclictest	3682091	-21	kworker/u16:1+events_unbound	06:19:56	5
3426707	99	34	32,2	cyclictest	4004467	-21	kworker/u16:2+events_unbound	08:46:48	4
3426707	99	34	32,2	cyclictest	3823142	-21	kworker/u16:3+events_unbound	07:01:26	4
3426707	99	34	32,2	cyclictest	3823142	-21	kworker/u16:3+events_unbound	07:01:26	4
3426707	99	34	32,2	cyclictest	3692936	-21	kworker/u16:5+events_unbound	05:34:20	4
3426707	99	34	32,2	cyclictest	3571575	-21	kworker/u16:1+events_unbound	05:04:24	4
3426711	99	33	31,2	cyclictest	3884305	-21	kworker/u16:1+flush-8:0	08:02:48	5
3426711	99	33	31,2	cyclictest	3521217	-21	kworker/u16:0+events_unbound	04:19:08	5
3426707	99	33	31,2	cyclictest	3601938	-21	kworker/u16:4+events_unbound	04:52:21	4
3426711	99	32	30,2	cyclictest	3682091	-21	kworker/u16:1+events_unbound	06:02:25	5
3426711	99	32	30,2	cyclictest	3631343	-21	kworker/u16:0+flush-8:0	05:41:24	5
3426707	99	32	30,2	cyclictest	3541560	-21	kworker/u16:3+events_unbound	04:18:13	4
3426711	99	31	29,2	cyclictest	3884305	-21	kworker/u16:1+flush-8:0	07:47:26	5
3426711	99	31	29,2	cyclictest	3884305	-21	kworker/u16:1+flush-8:0	07:47:26	5
3426711	99	31	29,2	cyclictest	3772863	-21	kworker/u16:3+events_unbound	06:24:26	5
3426711	99	31	29,2	cyclictest	3682092	-21	kworker/u16:4+events_unbound	05:36:16	5
3426711	99	31	29,2	cyclictest	3521217	-21	kworker/u16:0+events_unbound	04:11:56	5
3426707	99	31	29,2	cyclictest	3884305	-21	kworker/u16:1+events_unbound	07:46:48	4
3426707	99	31	29,2	cyclictest	3884305	-21	kworker/u16:1+events_unbound	07:46:48	4
3426707	99	31	29,2	cyclictest	3803496	-21	kworker/u16:0+events_unbound	06:47:26	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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