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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 Nov 06, 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
70135	2	59	49,7	sleep4	0	-21	swapper/4	03:23:07	4
70128	2	58	48,7	sleep6	0	-21	swapper/6	03:23:01	6
70213	2	56	45,8	sleep5	0	-21	swapper/5	03:24:13	5
70120	2	53	20,29	sleep7	0	-21	swapper/7	03:22:54	7
70614	99	48	45,2	cyclictest	266226	-21	cut	04:59:37	7
70614	99	45	0,43	cyclictest	80543	-21	latency_hist	03:29:37	7
70614	99	44	39,4	cyclictest	306457	-21	latency_hist	05:19:37	7
70612	99	44	42,2	cyclictest	386955	-21	kworker/u16:3+events_unbound	06:12:35	5
70612	99	43	41,2	cyclictest	80230	-21	kworker/u16:1+flush-8:0	03:35:07	5
70612	99	43	41,2	cyclictest	80230	-21	kworker/u16:1+flush-8:0	03:35:07	5
70612	99	43	41,2	cyclictest	619642	-21	kworker/u16:4+events_unbound	08:07:59	5
70612	99	43	41,2	cyclictest	619642	-21	kworker/u16:4+events_unbound	08:07:59	5
70612	99	43	41,2	cyclictest	457952	-21	kworker/u16:4+events_unbound	06:45:23	5
70613	99	42	40,2	cyclictest	19503	-21	kworker/u16:0+flush-8:0	03:35:05	6
70613	99	42	40,2	cyclictest	19503	-21	kworker/u16:0+flush-8:0	03:35:05	6
70612	99	42	40,2	cyclictest	255869	-21	kworker/u16:3+flush-8:0	05:10:06	5
70613	99	40	38,2	cyclictest	558511	-21	kworker/u16:1+events_unbound	07:30:03	6
70613	99	40	38,2	cyclictest	348488	-21	kworker/u16:4+flush-8:0	05:55:02	6
70612	99	40	38,2	cyclictest	135112	-21	kworker/u16:0+events_unbound	04:59:36	5
70614	99	39	35,2	cyclictest	639430	-21	latency_hist	08:04:36	7
70612	99	37	35,2	cyclictest	618921	-21	kworker/u16:3+events_unbound	07:57:30	5
70612	99	37	35,2	cyclictest	135112	-21	kworker/u16:0+events_unbound	06:54:32	5
70613	99	36	34,2	cyclictest	659285	-21	kworker/u16:2+events_unbound	08:25:09	6
70613	99	36	34,2	cyclictest	236964	-21	kworker/u16:1+events_unbound	05:35:00	6
70612	99	36	34,2	cyclictest	386955	-21	kworker/u16:3+events_unbound	06:34:34	5
70613	99	35	33,2	cyclictest	684591	-21	kworker/u16:0+events_unbound	08:36:47	6
70613	99	35	33,2	cyclictest	457952	-21	kworker/u16:4+flush-8:0	07:15:31	6
70612	99	35	33,2	cyclictest	3591342	-21	kworker/u16:3+flush-8:0	03:52:33	5
70612	99	35	33,2	cyclictest	316919	-21	kworker/u16:4+flush-8:0	05:26:35	5
70613	99	34	32,2	cyclictest	588810	-21	kworker/u16:1+flush-8:0	07:58:39	6
70612	99	34	32,2	cyclictest	348488	-21	kworker/u16:4+flush-8:0	05:55:01	5
70612	99	34	32,2	cyclictest	236964	-21	kworker/u16:1+events_unbound	06:01:48	5
70612	99	34	32,2	cyclictest	135112	-21	kworker/u16:0+flush-8:0	04:20:10	5
70612	99	34	32,2	cyclictest	135112	-21	kworker/u16:0+flush-8:0	04:20:10	5
70614	99	33	28,4	cyclictest	255991	-21	latency_hist	04:54:37	7
70613	99	33	31,2	cyclictest	236964	-21	kworker/u16:1+events_unbound	05:34:35	6
70613	99	33	31,2	cyclictest	135112	-21	kworker/u16:0+events_unbound	06:44:58	6
70612	99	33	31,2	cyclictest	588810	-21	kworker/u16:1+events_unbound	08:26:33	5
70612	99	33	31,2	cyclictest	457952	-21	kworker/u16:4+flush-8:0	06:35:03	5
70612	99	33	31,2	cyclictest	457952	-21	kworker/u16:4+flush-8:0	06:35:03	5
70612	99	33	31,2	cyclictest	386955	-21	kworker/u16:3+flush-8:0	06:18:47	5
70612	99	33	31,2	cyclictest	255869	-21	kworker/u16:3+events_unbound	05:01:35	5
70612	99	33	31,2	cyclictest	175607	-21	kworker/u16:2+flush-8:0	04:50:48	5
70612	99	33	31,2	cyclictest	135112	-21	kworker/u16:0+flush-8:0	04:30:06	5
70614	99	32	31,0	cyclictest	0	-21	swapper/7	08:14:58	7
70613	99	32	30,2	cyclictest	80230	-21	kworker/u16:1+flush-8:0	04:06:23	6
70613	99	32	30,2	cyclictest	285287	-21	kworker/u16:4+flush-8:0	05:08:38	6
70613	99	32	30,2	cyclictest	285287	-21	kworker/u16:4+flush-8:0	05:08:38	6
70612	99	32	30,2	cyclictest	659285	-21	kworker/u16:2+events_unbound	08:23:08	5
70612	99	32	30,2	cyclictest	578638	-21	kworker/u16:2+events_unbound	07:50:34	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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