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 Sun Apr 12, 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
226525	99	555	34,520	cyclictest	0	-21	swapper/1	23:18:14	1
226547	99	512	15,495	cyclictest	0	-21	swapper/7	19:28:14	13
226554	99	489	487,2	cyclictest	421777	-21	kworker/9:2+i915-unordered	23:18:14	15
226532	99	487	485,2	cyclictest	388581	-21	kworker/3:1+i915-unordered	22:43:14	9
226532	99	487	485,2	cyclictest	388581	-21	kworker/3:1+i915-unordered	22:43:14	9
226525	99	487	486,1	cyclictest	396603	-21	kworker/1:2+i915-unordered	22:55:14	1
226525	99	485	485,0	cyclictest	0	-21	swapper/1	22:10:14	1
226559	99	478	478,0	cyclictest	0	-21	swapper/10	00:07:14	2
226525	99	473	29,29	cyclictest	0	-21	swapper/1	22:00:14	1
226566	99	471	23,30	cyclictest	0	-21	swapper/11	21:13:35	3
226525	99	471	23,447	cyclictest	34	-21	ksoftirqd/1	19:52:14	1
226525	99	471	23,447	cyclictest	34	-21	ksoftirqd/1	19:52:14	1
226582	99	469	21,30	cyclictest	0	-21	swapper/15	23:16:56	7
226574	99	468	21,29	cyclictest	0	-21	swapper/13	21:07:57	5
226566	99	468	22,28	cyclictest	124	-21	ksoftirqd/11	20:40:14	3
226547	99	468	23,29	cyclictest	0	-21	swapper/7	00:29:08	13
226566	99	467	16,59	cyclictest	124	-21	ksoftirqd/11	19:40:14	3
226566	99	467	16,59	cyclictest	124	-21	ksoftirqd/11	19:40:14	3
226582	99	464	12,29	cyclictest	0	-21	swapper/15	21:41:56	7
226566	99	463	17,28	cyclictest	0	-21	swapper/11	00:08:59	3
226530	99	463	461,1	cyclictest	437022	-21	kworker/2:4+i915-unordered	00:07:14	8
226525	99	463	15,447	cyclictest	34	-21	ksoftirqd/1	23:08:13	1
226544	99	462	460,2	cyclictest	461460	-21	kworker/6:1+i915-unordered	00:06:14	12
226574	99	460	21,29	cyclictest	0	-21	swapper/13	22:26:14	5
226544	99	459	0,458	cyclictest	0	-21	swapper/6	23:20:08	12
226566	99	457	15,30	cyclictest	0	-21	swapper/11	19:22:14	3
226569	99	456	455,1	cyclictest	697	50	irq/159-i915	23:28:14	4
226536	99	456	454,1	cyclictest	429138	-21	kworker/4:0+i915-unordered	23:28:14	10
226574	99	455	17,28	cyclictest	0	-21	swapper/13	21:43:14	5
226577	99	453	14,29	cyclictest	0	-21	swapper/14	23:52:13	6
226566	99	453	1,30	cyclictest	0	-21	swapper/11	20:34:37	3
226525	99	452	0,30	cyclictest	424056	-21	ps	23:09:35	1
226577	99	450	449,1	cyclictest	1818	-21	snmpd	21:16:25	6
226566	99	450	0,30	cyclictest	0	-21	swapper/11	23:46:58	3
226577	99	449	6,30	cyclictest	0	-21	swapper/14	23:35:13	6
226566	99	449	2,29	cyclictest	0	-21	swapper/11	21:24:57	3
226540	99	449	0,448	cyclictest	239021	-21	sed	19:19:36	11
226566	99	448	28,419	cyclictest	0	-21	swapper/11	22:56:36	3
226566	99	448	0,28	cyclictest	0	-21	swapper/11	20:16:36	3
226566	99	447	0,29	cyclictest	0	-21	swapper/11	20:51:57	3
226547	99	447	0,446	cyclictest	0	-21	swapper/7	20:48:14	13
226532	99	447	445,2	cyclictest	380479	-21	kworker/3:2+i915-unordered	22:17:14	9
226566	99	446	25,420	cyclictest	0	-21	swapper/11	23:49:57	3
226566	99	446	0,29	cyclictest	0	-21	swapper/11	22:31:58	3
226566	99	445	27,417	cyclictest	0	-21	swapper/11	20:01:37	3
226532	99	445	24,419	cyclictest	0	-21	swapper/3	20:03:57	9
226525	99	445	22,422	cyclictest	0	-21	swapper/1	00:19:36	1
226566	99	444	25,418	cyclictest	0	-21	swapper/11	23:42:36	3
226566	99	444	25,418	cyclictest	0	-21	swapper/11	23:17:58	3
226566	99	444	24,419	cyclictest	0	-21	swapper/11	22:23:35	3
226566	99	443	24,418	cyclictest	0	-21	swapper/11	22:43:36	3
226566	99	443	24,418	cyclictest	0	-21	swapper/11	22:43:36	3
226566	99	443	23,419	cyclictest	0	-21	swapper/11	00:27:35	3
226566	99	442	21,420	cyclictest	0	-21	swapper/11	22:14:59	3
226566	99	442	17,29	cyclictest	0	-21	swapper/11	20:25:58	3
226559	99	442	441,0	cyclictest	364376	-21	kworker/10:2+i915-unordered	22:13:14	2
226530	99	442	23,30	cyclictest	0	-21	swapper/2	19:32:14	8
226525	99	442	25,416	cyclictest	0	-21	swapper/1	21:56:14	1
226547	99	441	23,416	cyclictest	0	-21	swapper/7	19:59:09	13
226582	99	440	438,2	cyclictest	235399	-21	kworker/15:0+i915-unordered	19:28:14	7
226582	99	440	25,414	cyclictest	0	-21	swapper/15	21:55:14	7
226566	99	440	20,419	cyclictest	0	-21	swapper/11	00:37:57	3
226525	99	440	21,418	cyclictest	0	-21	swapper/1	22:40:13	1
226525	99	440	21,418	cyclictest	0	-21	swapper/1	22:40:13	1
226566	99	439	11,424	cyclictest	0	-21	swapper/11	20:04:36	3
226525	99	439	18,420	cyclictest	0	-21	swapper/1	20:09:36	1
226551	99	438	435,3	cyclictest	0	-21	swapper/8	20:28:09	14
226540	99	438	435,2	cyclictest	315838	-21	kworker/u64:1+events_unbound	21:01:14	11
226540	99	437	17,419	cyclictest	0	-21	swapper/5	21:54:09	11
226532	99	437	23,413	cyclictest	0	-21	swapper/3	23:05:13	9
226532	99	437	20,416	cyclictest	0	-21	swapper/3	21:00:14	9
226574	99	436	17,29	cyclictest	0	-21	swapper/13	22:37:14	5
226574	99	436	17,29	cyclictest	0	-21	swapper/13	22:37:14	5
226569	99	436	435,1	cyclictest	697	50	irq/159-i915	23:55:14	4
226566	99	436	19,415	cyclictest	0	-21	swapper/11	21:42:35	3
226536	99	436	435,1	cyclictest	437145	-21	kworker/4:2+i915-unordered	23:55:14	10
226532	99	436	432,3	cyclictest	449167	-21	kworker/3:0+pm	23:46:48	9
226521	99	436	433,3	cyclictest	1818	-21	snmpd	20:28:09	0
226577	99	434	22,411	cyclictest	0	-21	swapper/14	23:56:13	6
226577	99	434	21,412	cyclictest	0	-21	swapper/14	00:06:13	6
226547	99	434	14,419	cyclictest	0	-21	swapper/7	21:49:09	13
226547	99	434	10,29	cyclictest	0	-21	swapper/7	23:32:35	13
226547	99	433	15,417	cyclictest	0	-21	swapper/7	22:11:59	13
226547	99	433	15,417	cyclictest	0	-21	swapper/7	00:01:57	13
226547	99	433	14,418	cyclictest	0	-21	swapper/7	00:17:58	13
226559	99	432	11,420	cyclictest	0	-21	swapper/10	20:31:36	2
226554	99	432	18,413	cyclictest	0	-21	swapper/9	22:42:13	15
226554	99	432	18,413	cyclictest	0	-21	swapper/9	22:42:13	15
226547	99	432	15,416	cyclictest	0	-21	swapper/7	20:33:57	13
226547	99	432	14,417	cyclictest	0	-21	swapper/7	22:33:35	13
226547	99	432	11,420	cyclictest	0	-21	swapper/7	22:04:55	13
226577	99	431	18,412	cyclictest	0	-21	swapper/14	23:30:13	6
226574	99	431	428,2	cyclictest	169474	-21	kworker/u64:9+events_unbound	19:19:36	5
226547	99	431	13,417	cyclictest	0	-21	swapper/7	23:15:57	13
226547	99	431	13,417	cyclictest	0	-21	swapper/7	22:47:59	13
226525	99	431	11,419	cyclictest	0	-21	swapper/1	23:03:58	1
226577	99	430	429,1	cyclictest	1818	-21	snmpd	23:20:08	6
226554	99	430	19,410	cyclictest	0	-21	swapper/9	21:58:14	15
226544	99	430	13,416	cyclictest	0	-21	swapper/6	21:25:14	12
226569	99	428	427,1	cyclictest	697	50	irq/159-i915	00:21:13	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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