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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 Sat Jul 19, 2025 00:43:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1933361	2	70	46,8	sleep6	0	-21	swapper/6	03:28:26	6
1933359	2	59	49,7	sleep4	0	-21	swapper/4	03:28:24	4
1933333	2	53	19,30	sleep7	0	-21	swapper/7	03:28:03	7
1933596	2	51	40,7	sleep5	0	-21	swapper/5	03:31:45	5
2508115	2	37	0,0	sleep7	2508114	-21	kthreadcore	08:07:17	7
1933897	99	35	33,2	cyclictest	2512694	-21	kworker/u16:2+flush-8:0	08:27:19	4
1933897	99	33	31,2	cyclictest	2523514	-21	kworker/u16:1+events_unbound	08:41:09	4
1933910	99	32	0,30	cyclictest	2369628	-21	latency_hist	07:01:59	7
1933897	99	31	29,2	cyclictest	2543678	-21	kworker/u16:5+events_unbound	08:48:39	4
1933897	99	31	29,2	cyclictest	2029452	-21	kworker/u16:1+events_unbound	04:47:33	4
1933910	99	30	0,28	cyclictest	2246390	-21	latency_hist	06:01:59	7
1933910	99	30	0,28	cyclictest	2246390	-21	latency_hist	06:01:59	7
2293688	2	29	0,1	chrt	2293689	-21	kthreadcore	06:22:21	7
1933910	99	29	0,27	cyclictest	2061186	-21	latency_hist	04:31:59	7
1933897	99	29	27,2	cyclictest	2329298	-21	kworker/u16:1+events_unbound	07:08:08	4
1933897	99	29	27,2	cyclictest	2236006	-21	kworker/u16:1+events_unbound	06:25:49	4
1933910	99	28	0,27	cyclictest	2184635	-21	latency_hist	05:31:59	7
1933897	99	28	26,2	cyclictest	2543678	-21	kworker/u16:5+flush-8:0	08:57:09	4
1933897	99	28	26,2	cyclictest	2298533	-21	kworker/u16:0+flush-8:0	07:30:36	4
1933897	99	28	26,2	cyclictest	2298533	-21	kworker/u16:0+events_unbound	07:51:09	4
1933897	99	28	26,2	cyclictest	2029452	-21	kworker/u16:1+events_unbound	04:18:10	4
1933897	99	28	26,2	cyclictest	1959107	-21	kworker/u16:4+events_unbound	03:51:02	4
1933897	99	28	26,2	cyclictest	1920188	-21	kworker/u16:3+flush-8:0	04:27:49	4
1933897	99	28	25,2	cyclictest	2029452	-21	kworker/u16:1+events_unbound	05:27:00	4
1933910	99	27	24,2	cyclictest	2143535	-21	awk	05:11:58	7
1933897	99	27	25,2	cyclictest	2277333	-21	kworker/u16:3+events_unbound	06:19:10	4
1933897	99	27	25,2	cyclictest	1941015	-21	kworker/u16:2+flush-8:0	03:41:09	4
1933897	99	27	24,2	cyclictest	2298533	-21	kworker/u16:0+flush-8:0	07:57:08	4
1933897	99	27	24,2	cyclictest	2298533	-21	kworker/u16:0+events_unbound	07:52:00	4
1933897	99	26	24,2	cyclictest	2584570	-21	kworker/u16:0+flush-8:0	08:53:32	4
1933897	99	26	24,2	cyclictest	2512694	-21	kworker/u16:2+events_unbound	08:17:28	4
1933897	99	26	24,2	cyclictest	2512694	-21	kworker/u16:2+events_unbound	08:17:28	4
1933897	99	26	24,2	cyclictest	2462843	-21	kworker/u16:4+events_unbound	08:05:53	4
1933897	99	26	24,2	cyclictest	2329298	-21	kworker/u16:1+flush-8:0	06:49:48	4
1933897	99	26	24,2	cyclictest	2318006	-21	kworker/u16:2+flush-8:0	07:20:52	4
1933897	99	26	24,2	cyclictest	2185378	-21	kworker/u16:4+events_unbound	05:53:05	4
1933897	99	26	24,2	cyclictest	2081447	-21	kworker/u16:4+events_unbound	04:42:52	4
1933897	99	26	24,2	cyclictest	2029452	-21	kworker/u16:1+events_unbound	04:13:54	4
1933897	99	26	24,2	cyclictest	2009900	-21	kworker/u16:2+events_unbound	04:10:13	4
1933897	99	26	23,2	cyclictest	2298533	-21	kworker/u16:0+events_unbound	06:42:12	4
1933897	99	25	23,2	cyclictest	2329298	-21	kworker/u16:1+events_unbound	07:00:32	4
1933897	99	25	23,2	cyclictest	2318006	-21	kworker/u16:2+events_unbound	06:53:48	4
1933897	99	25	22,2	cyclictest	2359369	-21	kworker/u16:5+flush-8:0	07:12:04	4
1933897	99	24	22,2	cyclictest	2543678	-21	kworker/u16:5+events_unbound	08:44:44	4
1933897	99	24	22,2	cyclictest	2534865	-21	kworker/u16:3+events_unbound	08:36:00	4
1933897	99	24	22,2	cyclictest	2298533	-21	kworker/u16:0+flush-8:0	06:30:21	4
1933897	99	24	22,2	cyclictest	2029452	-21	kworker/u16:1+events_unbound	05:23:52	4
1933897	99	23	21,2	cyclictest	2256371	-21	kworker/u16:0+events_unbound	06:04:13	4
1933897	99	23	21,2	cyclictest	2236006	-21	kworker/u16:1+events_unbound	06:14:13	4
1933897	99	23	21,2	cyclictest	2185378	-21	kworker/u16:4+events_unbound	06:01:49	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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