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Default latency plot of system in rack #0, slot #5

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 rack0slot5.osadl.org (updated Sun Feb 01, 2026 00:43:47)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
881567	99	710	310,399	cyclictest	0	-21	swapper/9	20:18:50	15
881587	99	524	1,27	cyclictest	0	-21	swapper/13	21:50:27	5
881533	99	522	16,88	cyclictest	940614	-21	ntpq	20:13:48	0
881548	99	519	516,2	cyclictest	1026181	-21	kworker/4:2+i915-unordered	22:10:27	10
881587	99	507	8,498	cyclictest	0	-21	swapper/13	23:06:27	5
881536	99	498	31,466	cyclictest	0	-21	swapper/1	21:12:27	1
881548	99	488	487,0	cyclictest	924785	-21	kworker/4:1+i915-unordered	19:59:27	10
881552	99	485	485,0	cyclictest	1081551	-21	kworker/5:2+i915-unordered	23:06:27	11
881583	99	482	23,59	cyclictest	0	-21	swapper/12	19:19:48	4
881583	99	481	23,59	cyclictest	0	-21	swapper/12	23:47:50	4
881552	99	478	478,0	cyclictest	1021948	-21	kworker/5:0+i915-unordered	21:50:27	11
881533	99	473	18,58	cyclictest	0	-21	swapper/0	20:20:50	0
881555	99	472	470,1	cyclictest	1105483	-21	kworker/6:2+i915-unordered	00:02:27	12
881555	99	472	470,1	cyclictest	1105483	-21	kworker/6:2+i915-unordered	00:02:27	12
881583	99	471	16,59	cyclictest	0	-21	swapper/12	22:12:12	4
881541	99	471	471,0	cyclictest	0	-21	swapper/2	20:12:27	8
881592	99	467	466,1	cyclictest	697	50	irq/159-i915	00:02:27	6
881592	99	467	466,1	cyclictest	697	50	irq/159-i915	00:02:27	6
881564	99	463	436,26	cyclictest	1802	-21	snmpd	20:45:38	14
881533	99	456	60,395	cyclictest	1064632	-21	perf	22:48:22	0
881555	99	454	453,1	cyclictest	0	-21	swapper/6	23:30:27	12
881583	99	451	25,29	cyclictest	0	-21	swapper/12	22:21:27	4
881583	99	451	23,29	cyclictest	0	-21	swapper/12	23:01:10	4
881583	99	451	22,30	cyclictest	0	-21	swapper/12	21:27:13	4
881592	99	449	448,1	cyclictest	697	50	irq/159-i915	23:30:27	6
881587	99	448	445,2	cyclictest	1068605	-21	kworker/u64:14+events_unbound	23:46:50	5
881560	99	448	23,30	cyclictest	0	-21	swapper/7	00:08:22	13
881560	99	448	23,30	cyclictest	0	-21	swapper/7	00:08:22	13
881555	99	448	446,1	cyclictest	0	-21	swapper/6	22:41:27	12
881583	99	447	19,30	cyclictest	0	-21	swapper/12	22:27:48	4
881583	99	447	19,30	cyclictest	0	-21	swapper/12	19:44:09	4
881583	99	446	19,29	cyclictest	0	-21	swapper/12	19:11:51	4
881555	99	444	442,1	cyclictest	1141607	-21	kworker/6:1+i915-unordered	00:16:27	12
881555	99	444	442,1	cyclictest	1064513	-21	kworker/6:1+i915-unordered	23:09:27	12
881555	99	443	441,1	cyclictest	916169	-21	kworker/6:1+i915-unordered	21:00:27	12
881555	99	443	441,1	cyclictest	1105483	-21	kworker/6:2+i915-unordered	00:09:27	12
881592	99	442	441,1	cyclictest	697	50	irq/159-i915	22:41:27	6
881587	99	442	21,420	cyclictest	0	-21	swapper/13	20:23:48	5
881579	99	442	21,420	cyclictest	0	-21	swapper/11	21:58:48	3
881594	99	441	441,0	cyclictest	933044	-21	kworker/15:5+i915-unordered	20:34:27	7
881579	99	441	20,420	cyclictest	0	-21	swapper/11	23:08:11	3
881533	99	440	11,30	cyclictest	0	-21	swapper/0	20:36:49	0
881592	99	439	438,1	cyclictest	697	50	irq/159-i915	23:09:27	6
881592	99	439	438,1	cyclictest	697	50	irq/159-i915	00:16:27	6
881579	99	439	19,417	cyclictest	0	-21	swapper/11	21:08:48	3
881560	99	439	0,4	cyclictest	0	-21	swapper/7	22:13:49	13
881533	99	439	15,29	cyclictest	0	-21	swapper/0	00:30:26	0
881592	99	438	437,1	cyclictest	697	50	irq/159-i915	00:09:27	6
881555	99	438	437,1	cyclictest	1022329	-21	kworker/6:2+i915-unordered	22:05:27	12
881592	99	437	436,1	cyclictest	697	50	irq/159-i915	21:00:27	6
881533	99	437	11,30	cyclictest	0	-21	swapper/0	23:03:49	0
881555	99	435	434,1	cyclictest	0	-21	swapper/6	00:05:27	12
881555	99	435	434,1	cyclictest	0	-21	swapper/6	00:05:27	12
881579	99	434	12,419	cyclictest	0	-21	swapper/11	00:29:12	3
881541	99	434	432,1	cyclictest	653	50	usb-storage	22:52:11	8
881541	99	434	431,2	cyclictest	894985	-21	kworker/u64:6+events_unbound	19:52:51	8
881533	99	434	8,30	cyclictest	0	-21	swapper/0	23:37:50	0
881533	99	433	5,29	cyclictest	0	-21	swapper/0	23:46:49	0
881592	99	432	432,0	cyclictest	697	50	irq/159-i915	22:05:27	6
881560	99	432	431,1	cyclictest	88	-21	ksoftirqd/7	20:34:27	13
881548	99	432	431,1	cyclictest	0	-21	swapper/4	22:29:27	10
881574	99	431	428,3	cyclictest	1802	-21	snmpd	22:18:02	2
881555	99	431	431,0	cyclictest	0	-21	swapper/6	23:06:27	12
881592	99	430	429,1	cyclictest	697	50	irq/159-i915	00:05:27	6
881592	99	430	429,1	cyclictest	697	50	irq/159-i915	00:05:27	6
881567	99	430	429,1	cyclictest	988098	-21	kworker/9:0+i915-unordered	21:12:27	15
881552	99	430	429,1	cyclictest	0	-21	swapper/5	22:18:02	11
881583	99	428	426,2	cyclictest	0	-21	swapper/12	22:41:27	4
881592	99	427	426,1	cyclictest	697	50	irq/159-i915	23:06:27	6
881587	99	427	424,2	cyclictest	1109762	-21	kworker/u64:7+events_unbound	00:11:10	5
881564	99	427	427,0	cyclictest	0	-21	swapper/8	22:39:11	14
881541	99	426	8,416	cyclictest	0	-21	swapper/2	00:37:26	8
881579	99	425	6,418	cyclictest	0	-21	swapper/11	21:33:50	3
881579	99	424	26,397	cyclictest	0	-21	swapper/11	22:29:48	3
881579	99	424	25,398	cyclictest	0	-21	swapper/11	21:18:48	3
881579	99	424	25,398	cyclictest	0	-21	swapper/11	21:18:48	3
881555	99	424	424,0	cyclictest	0	-21	swapper/6	21:50:27	12
881579	99	423	25,397	cyclictest	0	-21	swapper/11	22:08:49	3
881579	99	423	24,398	cyclictest	0	-21	swapper/11	23:43:48	3
881574	99	423	422,0	cyclictest	928938	-21	kworker/10:0+i915-unordered	20:12:27	2
881552	99	423	3,419	cyclictest	0	-21	swapper/5	22:08:22	11
881545	99	423	0,30	cyclictest	0	-21	swapper/3	21:13:22	9
881587	99	422	23,398	cyclictest	0	-21	swapper/13	00:27:10	5
881579	99	422	24,398	cyclictest	0	-21	swapper/11	21:25:50	3
881587	99	421	23,397	cyclictest	0	-21	swapper/13	20:28:49	5
881579	99	421	26,394	cyclictest	0	-21	swapper/11	20:04:27	3
881579	99	421	24,396	cyclictest	0	-21	swapper/11	20:54:27	3
881579	99	421	22,398	cyclictest	0	-21	swapper/11	22:45:50	3
881579	99	421	22,398	cyclictest	0	-21	swapper/11	21:14:49	3
881579	99	421	22,398	cyclictest	0	-21	swapper/11	21:14:49	3
881548	99	421	419,1	cyclictest	929156	-21	kworker/4:2+i915-unordered	20:21:48	10
881536	99	421	417,3	cyclictest	1802	-21	snmpd	19:57:22	1
881587	99	420	21,398	cyclictest	0	-21	swapper/13	21:53:49	5
881579	99	420	23,396	cyclictest	0	-21	swapper/11	20:27:13	3
881579	99	420	22,397	cyclictest	0	-21	swapper/11	00:20:49	3
881579	99	420	20,399	cyclictest	0	-21	swapper/11	20:51:50	3
881548	99	420	417,2	cyclictest	1064482	-21	kworker/4:2+events	22:58:10	10
881548	99	420	0,419	cyclictest	0	-21	swapper/4	19:38:49	10
881545	99	420	26,394	cyclictest	0	-21	swapper/3	21:44:27	9
881545	99	420	2,416	cyclictest	0	-21	swapper/3	22:00:27	9
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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