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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 Wed Dec 17, 2025 12:43:31)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3156619	2	172	0,0	sleep4	0	-21	swapper/4	10:49:59	4
2718254	2	63	52,8	sleep6	0	-21	swapper/6	07:08:16	6
2718338	2	55	20,31	sleep7	0	-21	swapper/7	07:09:29	7
2718646	99	44	41,2	cyclictest	2945023	-21	kworker/u16:0+flush-8:0	09:14:40	6
6265	89	40	0,33	rtkit-daemon	0	-21	swapper/4	07:08:16	4
2718646	99	39	36,2	cyclictest	2819242	-21	kworker/u16:0+flush-8:0	08:04:39	6
2718327	2	38	27,8	sleep5	0	-21	swapper/5	07:09:19	5
2718634	99	34	31,2	cyclictest	2887362	-21	kworker/u16:3+events_unbound	09:34:41	4
2718634	99	34	31,2	cyclictest	2680668	-21	kworker/u16:1+events_unbound	07:09:41	4
2718650	99	32	31,0	cyclictest	0	-21	swapper/7	09:09:54	7
2718638	99	32	29,2	cyclictest	3208465	-21	kworker/u16:2+events_unbound	11:40:05	5
2718650	99	29	26,2	cyclictest	2955134	-21	cat	09:09:40	7
2718646	99	29	26,3	cyclictest	2751573	-21	kworker/u16:2+events_unbound	07:50:02	6
2718634	99	29	27,2	cyclictest	2808630	-21	kworker/u16:1+events_unbound	08:02:50	4
3217050	2	28	0,1	chrt	3217049	-21	cat	11:24:39	7
2718646	99	28	24,3	cyclictest	3099372	-21	kworker/u16:2+events_unbound	10:39:56	6
2718634	99	28	26,2	cyclictest	3050932	-21	kworker/u16:1+events_unbound	10:08:01	4
2718650	99	27	0,25	cyclictest	3207269	-21	latency_hist	11:19:39	7
2718638	99	27	25,2	cyclictest	3021718	-21	kworker/u16:0+events_unbound	10:27:45	5
2718638	99	27	25,2	cyclictest	2973183	-21	kworker/u16:4+events_unbound	10:50:09	5
2718638	99	27	24,2	cyclictest	3099372	-21	kworker/u16:2+flush-8:0	10:44:40	5
2718634	99	27	25,2	cyclictest	2819242	-21	kworker/u16:0+events_unbound	08:08:50	4
2718650	99	26	22,3	cyclictest	3247155	-21	sed	11:39:52	7
2718638	99	26	24,2	cyclictest	3226315	-21	kworker/u16:1+events_unbound	12:11:37	5
2718634	99	26	24,2	cyclictest	3031502	-21	kworker/u16:1+events_unbound	09:46:46	4
2718634	99	26	24,2	cyclictest	2973183	-21	kworker/u16:4+events_unbound	09:24:39	4
2718634	99	26	24,2	cyclictest	2751573	-21	kworker/u16:2+events_unbound	07:49:41	4
2718634	99	26	24,2	cyclictest	2734166	-21	kworker/u16:0+events_unbound	07:45:09	4
2718634	99	26	23,2	cyclictest	2859392	-21	kworker/u16:2+events_unbound	09:04:41	4
2718638	99	25	23,2	cyclictest	3264081	-21	kworker/u16:4+flush-8:0	11:50:04	5
2718638	99	25	23,2	cyclictest	2751573	-21	kworker/u16:2+events_unbound	07:48:46	5
2718634	99	25	23,2	cyclictest	3208465	-21	kworker/u16:2+events_unbound	11:20:50	4
2718634	99	25	23,2	cyclictest	3021718	-21	kworker/u16:0+events_unbound	11:41:49	4
2718634	99	25	22,2	cyclictest	3099372	-21	kworker/u16:2+events_unbound	10:34:49	4
2718634	99	25	22,2	cyclictest	3021718	-21	kworker/u16:0+flush-8:0	10:09:51	4
2718634	99	25	22,2	cyclictest	2887362	-21	kworker/u16:3+events_unbound	08:56:37	4
2718634	99	25	22,2	cyclictest	2808630	-21	kworker/u16:1+events_unbound	08:39:41	4
2718646	99	24	22,2	cyclictest	3208465	-21	kworker/u16:2+flush-8:0	11:19:56	6
2718646	99	24	22,2	cyclictest	3159160	-21	kworker/u16:1+events_unbound	11:04:57	6
2718646	99	24	22,2	cyclictest	2887362	-21	kworker/u16:3+flush-8:0	09:00:02	6
2718638	99	24	22,2	cyclictest	2819242	-21	kworker/u16:0+flush-8:0	08:00:07	5
2718638	99	24	22,2	cyclictest	2751573	-21	kworker/u16:2+events_unbound	07:39:33	5
2718634	99	24	22,2	cyclictest	3050932	-21	kworker/u16:1+events_unbound	10:19:56	4
2718634	99	24	22,2	cyclictest	3050932	-21	kworker/u16:1+events_unbound	10:19:56	4
2718634	99	24	22,2	cyclictest	2859392	-21	kworker/u16:2+events_unbound	08:29:33	4
2718634	99	24	22,2	cyclictest	2819242	-21	kworker/u16:0+events_unbound	08:47:45	4
2718634	99	24	22,2	cyclictest	2819242	-21	kworker/u16:0+events_unbound	08:47:45	4
2718634	99	24	21,2	cyclictest	2751573	-21	kworker/u16:2+flush-8:0	07:39:40	4
2718634	99	24	20,3	cyclictest	2973183	-21	kworker/u16:4+flush-8:0	10:55:05	4
2718638	99	23	21,2	cyclictest	3264081	-21	kworker/u16:4+events_unbound	12:34:37	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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