OSADL QA Farm on Real-time of Mainline Linux

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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 Wed Jan 14, 2026 00:43:48)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4124534	99	536	14,520	cyclictest	0	-21	swapper/2	22:43:00	8
4124569	99	521	19,498	cyclictest	0	-21	swapper/11	19:30:00	3
4124569	99	521	19,498	cyclictest	0	-21	swapper/11	19:30:00	3
4124548	99	510	508,2	cyclictest	4150771	-21	kworker/6:1+i915-unordered	19:50:00	12
4124529	99	508	85,422	cyclictest	76897	-21	kworker/1:0+i915-unordered	22:10:00	1
4124529	99	508	85,422	cyclictest	76897	-21	kworker/1:0+i915-unordered	22:10:00	1
4124529	99	507	66,440	cyclictest	3502	-21	kworker/1:0+i915-unordered	20:35:00	1
4124548	99	506	503,2	cyclictest	4189091	-21	kworker/6:1+i915-unordered	20:26:00	12
4124587	99	505	38,466	cyclictest	0	-21	swapper/15	21:42:00	7
4124525	99	499	25,59	cyclictest	0	-21	swapper/0	21:04:22	0
4124529	99	494	492,2	cyclictest	4138135	-21	kworker/1:0+i915-unordered	19:51:00	1
4124529	99	491	489,2	cyclictest	3619977	-21	kworker/1:6+i915-unordered	19:23:00	1
4124529	99	490	488,2	cyclictest	4150824	-21	kworker/1:1+i915-unordered	19:40:00	1
4124529	99	484	482,1	cyclictest	4150824	-21	kworker/1:1+i915-unordered	19:46:00	1
4124548	99	483	15,467	cyclictest	0	-21	swapper/6	21:07:00	12
4124529	99	483	22,460	cyclictest	0	-21	swapper/1	00:25:00	1
4124529	99	477	475,1	cyclictest	4138135	-21	kworker/1:0+i915-unordered	19:38:00	1
4124529	99	477	475,1	cyclictest	4138135	-21	kworker/1:0+i915-unordered	19:38:00	1
4124587	99	471	17,28	cyclictest	0	-21	swapper/15	19:16:00	7
4124529	99	471	470,1	cyclictest	92603	-21	kworker/1:1+i915-unordered	22:56:00	1
4124529	99	470	8,461	cyclictest	0	-21	swapper/1	23:02:00	1
4124582	99	469	468,1	cyclictest	0	-21	swapper/14	19:50:00	6
4124569	99	468	19,29	cyclictest	0	-21	swapper/11	00:12:45	3
4124569	99	466	17,447	cyclictest	0	-21	swapper/11	22:45:22	3
4124582	99	465	463,2	cyclictest	0	-21	swapper/14	20:26:00	6
4124569	99	465	16,30	cyclictest	0	-21	swapper/11	21:11:43	3
4124569	99	464	16,30	cyclictest	0	-21	swapper/11	20:08:44	3
4124529	99	464	1,462	cyclictest	0	-21	swapper/1	22:43:00	1
4124574	99	460	12,30	cyclictest	0	-21	swapper/12	22:31:00	4
4124569	99	460	7,58	cyclictest	0	-21	swapper/11	20:16:00	3
4124556	99	460	17,30	cyclictest	0	-21	swapper/8	22:08:46	14
4124556	99	460	17,30	cyclictest	0	-21	swapper/8	22:08:46	14
4124525	99	460	11,29	cyclictest	0	-21	swapper/0	23:39:22	0
4124525	99	456	11,29	cyclictest	0	-21	swapper/0	23:29:23	0
4124556	99	452	8,29	cyclictest	0	-21	swapper/8	00:26:44	14
4124587	99	449	23,30	cyclictest	0	-21	swapper/15	23:45:00	7
4124551	99	447	446,1	cyclictest	189800	-21	kworker/7:1+i915-unordered	00:13:00	13
4124534	99	447	23,29	cyclictest	4142173	2	sleep2	19:25:22	8
4124534	99	447	23,29	cyclictest	4142173	2	sleep2	19:25:22	8
4124529	99	447	447,0	cyclictest	0	-21	swapper/1	22:15:00	1
4124587	99	446	23,30	cyclictest	0	-21	swapper/15	22:07:00	7
4124587	99	446	23,30	cyclictest	0	-21	swapper/15	22:07:00	7
4124578	99	446	443,2	cyclictest	0	-21	swapper/13	21:50:01	5
4124559	99	446	445,1	cyclictest	697	50	irq/159-i915	00:25:00	15
4124569	99	445	16,30	cyclictest	0	-21	swapper/11	19:35:43	3
4124569	99	445	16,30	cyclictest	0	-21	swapper/11	19:35:43	3
4124536	99	445	443,2	cyclictest	0	-21	swapper/3	00:25:00	9
4124569	99	444	18,30	cyclictest	0	-21	swapper/11	20:47:42	3
4124569	99	444	17,30	cyclictest	0	-21	swapper/11	22:53:45	3
4124540	99	444	441,2	cyclictest	194043	-21	kworker/u64:1+events_unbound	00:17:42	10
4124582	99	443	443,0	cyclictest	28867	-21	kworker/14:1+i915-unordered	21:07:00	6
4124569	99	443	17,30	cyclictest	0	-21	swapper/11	20:00:23	3
4124569	99	443	14,425	cyclictest	0	-21	swapper/11	23:14:43	3
4124569	99	443	0,26	cyclictest	0	-21	swapper/11	23:30:00	3
4124569	99	442	15,30	cyclictest	0	-21	swapper/11	23:11:43	3
4124569	99	442	15,30	cyclictest	0	-21	swapper/11	22:27:21	3
4124534	99	442	15,29	cyclictest	0	-21	swapper/2	23:54:21	8
4124529	99	442	440,2	cyclictest	0	-21	swapper/1	20:12:00	1
4124569	99	441	14,30	cyclictest	0	-21	swapper/11	21:50:21	3
4124540	99	441	438,2	cyclictest	0	-21	swapper/4	21:50:01	10
4124529	99	441	0,440	cyclictest	0	-21	swapper/1	20:26:00	1
4124569	99	440	14,29	cyclictest	0	-21	swapper/11	22:22:42	3
4124569	99	440	13,28	cyclictest	0	-21	swapper/11	19:10:45	3
4124569	99	440	12,30	cyclictest	0	-21	swapper/11	00:28:22	3
4124551	99	440	22,28	cyclictest	0	-21	swapper/7	20:53:55	13
4124534	99	440	15,29	cyclictest	0	-21	swapper/2	23:45:44	8
4124525	99	440	15,30	cyclictest	0	-21	swapper/0	19:20:00	0
4124587	99	439	20,419	cyclictest	0	-21	swapper/15	00:15:43	7
4124587	99	439	16,28	cyclictest	0	-21	swapper/15	20:11:00	7
4124556	99	439	15,30	cyclictest	0	-21	swapper/8	19:56:43	14
4124548	99	439	20,418	cyclictest	0	-21	swapper/6	00:06:21	12
4124534	99	439	20,418	cyclictest	0	-21	swapper/2	21:05:43	8
4124534	99	439	18,420	cyclictest	0	-21	swapper/2	21:48:23	8
4124525	99	439	11,29	cyclictest	0	-21	swapper/0	22:19:23	0
4124534	99	438	12,29	cyclictest	0	-21	swapper/2	20:36:00	8
4124569	99	437	12,29	cyclictest	0	-21	swapper/11	23:52:44	3
4124534	99	437	17,419	cyclictest	0	-21	swapper/2	00:11:44	8
4124534	99	437	16,420	cyclictest	0	-21	swapper/2	22:10:42	8
4124534	99	437	16,420	cyclictest	0	-21	swapper/2	22:10:42	8
4124529	99	437	436,1	cyclictest	0	-21	swapper/1	21:07:00	1
4124556	99	436	22,413	cyclictest	0	-21	swapper/8	23:21:44	14
4124548	99	436	433,2	cyclictest	75407	-21	kworker/u64:2+events_unbound	23:41:23	12
4124582	99	435	435,0	cyclictest	0	-21	swapper/14	23:35:00	6
4124556	99	435	21,413	cyclictest	0	-21	swapper/8	22:57:44	14
4124556	99	435	18,416	cyclictest	0	-21	swapper/8	21:27:42	14
4124534	99	435	16,418	cyclictest	0	-21	swapper/2	22:55:23	8
4124569	99	434	14,419	cyclictest	0	-21	swapper/11	22:58:45	3
4124556	99	434	21,413	cyclictest	0	-21	swapper/8	21:54:23	14
4124569	99	433	11,29	cyclictest	0	-21	swapper/11	21:47:00	3
4124525	99	433	6,30	cyclictest	0	-21	swapper/0	19:49:23	0
4124556	99	432	17,414	cyclictest	0	-21	swapper/8	21:41:45	14
4124548	99	432	428,3	cyclictest	0	-21	swapper/6	21:50:01	12
4124534	99	431	16,413	cyclictest	0	-21	swapper/2	21:57:00	8
4124529	99	431	430,1	cyclictest	0	-21	swapper/1	19:30:00	1
4124529	99	431	430,1	cyclictest	0	-21	swapper/1	19:30:00	1
4124556	99	430	16,413	cyclictest	0	-21	swapper/8	23:07:43	14
4124534	99	430	6,30	cyclictest	0	-21	swapper/2	21:32:00	8
4124582	99	429	12,416	cyclictest	0	-21	swapper/14	00:36:00	6
4124582	99	429	12,416	cyclictest	0	-21	swapper/14	00:36:00	6
4124529	99	429	425,3	cyclictest	57269	-21	kworker/u64:10+events_unbound	21:50:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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