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 Fri Jul 03, 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
743250	99	737	315,421	cyclictest	0	-21	swapper/0	21:06:25	0
743250	99	737	315,421	cyclictest	0	-21	swapper/0	21:06:25	0
743297	99	703	703,0	cyclictest	0	-21	swapper/12	21:04:41	4
743297	99	703	703,0	cyclictest	0	-21	swapper/12	21:04:41	4
743258	99	573	21,551	cyclictest	0	-21	swapper/2	21:28:41	8
743258	99	549	548,1	cyclictest	43	-21	ksoftirqd/2	20:02:41	8
743277	99	539	15,520	cyclictest	0	-21	swapper/7	00:29:41	13
743297	99	532	11,519	cyclictest	0	-21	swapper/12	19:42:41	4
743250	99	528	23,27	cyclictest	0	-21	swapper/0	23:23:41	0
743277	99	520	36,484	cyclictest	0	-21	swapper/7	00:08:41	13
743250	99	515	10,44	cyclictest	0	-21	swapper/0	20:03:41	0
743277	99	511	22,488	cyclictest	0	-21	swapper/7	20:42:41	13
743305	99	509	479,30	cyclictest	0	-21	swapper/14	22:47:41	6
743272	99	508	507,1	cyclictest	935538	-21	kworker/6:2+i915-unordered	22:47:41	12
743305	99	489	488,1	cyclictest	876976	-21	kworker/14:1+i915-unordered	21:32:41	6
743272	99	489	486,2	cyclictest	0	-21	swapper/6	21:32:41	12
743250	99	486	0,27	cyclictest	0	-21	swapper/0	22:47:41	0
743264	99	481	480,1	cyclictest	765861	-21	kworker/4:1+i915-unordered	19:42:41	10
743310	99	480	479,1	cyclictest	1029035	-21	kworker/15:0+i915-unordered	00:29:41	7
743250	99	475	10,462	cyclictest	16	-21	ksoftirqd/0	00:08:41	0
743282	99	474	474,0	cyclictest	0	-21	swapper/9	20:03:41	15
743253	99	473	473,0	cyclictest	788355	-21	kworker/1:0+i915-unordered	20:03:41	1
743287	99	470	468,2	cyclictest	859521	-21	kworker/10:1+i915-unordered	21:28:41	2
743310	99	466	465,1	cyclictest	0	-21	swapper/15	21:37:41	7
743310	99	466	19,446	cyclictest	265	50	irq/134-xhci_hcd	21:07:41	7
743250	99	464	0,463	cyclictest	0	-21	swapper/0	21:32:41	0
743277	99	462	18,30	cyclictest	0	-21	swapper/7	22:29:41	13
743250	99	462	0,461	cyclictest	0	-21	swapper/0	19:42:41	0
743279	99	459	458,1	cyclictest	697	50	irq/159-i915	23:29:41	14
743287	99	458	457,1	cyclictest	0	-21	swapper/10	23:28:41	2
743277	99	458	8,448	cyclictest	0	-21	swapper/7	22:49:04	13
743310	99	457	12,29	cyclictest	0	-21	swapper/15	20:47:41	7
743297	99	457	9,29	cyclictest	0	-21	swapper/12	22:35:26	4
743293	99	457	454,3	cyclictest	1818	-21	snmpd	23:07:15	3
743310	99	456	456,0	cyclictest	0	-21	swapper/15	23:03:41	7
743297	99	455	7,29	cyclictest	0	-21	swapper/12	20:18:04	4
743282	99	451	449,1	cyclictest	1818	-21	snmpd	21:34:14	15
743277	99	450	393,29	cyclictest	0	-21	swapper/7	19:12:41	13
743287	99	449	448,1	cyclictest	787823	-21	kworker/10:1+i915-unordered	20:02:41	2
743253	99	448	448,0	cyclictest	0	-21	swapper/1	21:34:14	1
743277	99	446	25,417	cyclictest	0	-21	swapper/7	23:42:04	13
743277	99	444	0,30	cyclictest	0	-21	swapper/7	19:45:41	13
743268	99	444	441,2	cyclictest	770081	-21	kworker/5:1+i915-unordered	19:37:05	11
743258	99	444	444,0	cyclictest	859715	-21	kworker/2:2+pm	21:34:14	8
743277	99	443	22,418	cyclictest	0	-21	swapper/7	22:58:25	13
743277	99	442	22,417	cyclictest	0	-21	swapper/7	21:27:04	13
743277	99	442	20,421	cyclictest	0	-21	swapper/7	22:37:03	13
743297	99	441	21,419	cyclictest	0	-21	swapper/12	23:14:02	4
743277	99	441	24,415	cyclictest	0	-21	swapper/7	19:54:41	13
743297	99	440	18,421	cyclictest	0	-21	swapper/12	20:24:26	4
743277	99	440	23,416	cyclictest	0	-21	swapper/7	21:53:27	13
743258	99	440	21,418	cyclictest	0	-21	swapper/2	23:27:02	8
743277	99	439	20,417	cyclictest	0	-21	swapper/7	23:54:03	13
743310	99	438	438,0	cyclictest	828312	-21	kworker/15:2+i915-unordered	20:42:41	7
743297	99	438	18,418	cyclictest	0	-21	swapper/12	20:35:04	4
743277	99	438	17,418	cyclictest	0	-21	swapper/7	19:57:04	13
743258	99	438	26,412	cyclictest	0	-21	swapper/2	19:48:41	8
743297	99	437	17,418	cyclictest	0	-21	swapper/12	21:31:26	4
743297	99	437	17,417	cyclictest	0	-21	swapper/12	19:51:36	4
743297	99	437	15,420	cyclictest	0	-21	swapper/12	19:29:03	4
743297	99	437	15,419	cyclictest	0	-21	swapper/12	00:11:26	4
743297	99	436	16,419	cyclictest	0	-21	swapper/12	19:59:04	4
743277	99	436	17,418	cyclictest	0	-21	swapper/7	20:31:27	13
743277	99	436	16,419	cyclictest	0	-21	swapper/7	20:15:03	13
743277	99	436	16,418	cyclictest	0	-21	swapper/7	21:17:04	13
743258	99	436	16,419	cyclictest	0	-21	swapper/2	21:05:26	8
743258	99	436	16,419	cyclictest	0	-21	swapper/2	21:05:26	8
743258	99	436	15,420	cyclictest	0	-21	swapper/2	23:51:25	8
743258	99	436	15,420	cyclictest	0	-21	swapper/2	20:14:26	8
743277	99	435	15,419	cyclictest	0	-21	swapper/7	00:24:26	13
743264	99	435	432,2	cyclictest	951925	-21	kworker/u64:5+events_unbound	23:43:41	10
743264	99	435	23,412	cyclictest	0	-21	swapper/4	19:37:41	10
743258	99	435	17,417	cyclictest	0	-21	swapper/2	19:44:23	8
743258	99	435	16,418	cyclictest	0	-21	swapper/2	00:16:02	8
743258	99	435	15,419	cyclictest	0	-21	swapper/2	19:52:27	8
743258	99	435	14,420	cyclictest	0	-21	swapper/2	23:35:25	8
743258	99	435	14,420	cyclictest	0	-21	swapper/2	23:35:25	8
743258	99	435	14,420	cyclictest	0	-21	swapper/2	23:05:03	8
743250	99	435	21,413	cyclictest	0	-21	swapper/0	00:28:41	0
743287	99	434	433,1	cyclictest	0	-21	swapper/10	22:34:41	2
743277	99	434	13,420	cyclictest	0	-21	swapper/7	22:05:25	13
743258	99	434	16,417	cyclictest	0	-21	swapper/2	22:44:24	8
743258	99	434	15,418	cyclictest	0	-21	swapper/2	21:01:26	8
743258	99	434	15,418	cyclictest	0	-21	swapper/2	21:01:26	8
743310	99	433	433,0	cyclictest	0	-21	swapper/15	23:54:41	7
743310	99	433	20,412	cyclictest	0	-21	swapper/15	20:13:41	7
743277	99	433	13,418	cyclictest	0	-21	swapper/7	20:19:03	13
743277	99	433	12,420	cyclictest	0	-21	swapper/7	21:23:25	13
743277	99	433	12,419	cyclictest	0	-21	swapper/7	00:18:24	13
743277	99	433	10,420	cyclictest	0	-21	swapper/7	20:58:03	13
743277	99	433	10,420	cyclictest	0	-21	swapper/7	20:58:03	13
743261	99	433	431,2	cyclictest	944041	-21	kworker/3:2+i915-unordered	23:23:41	9
743258	99	433	14,418	cyclictest	0	-21	swapper/2	22:52:25	8
743277	99	432	12,418	cyclictest	0	-21	swapper/7	21:35:03	13
743282	99	431	429,1	cyclictest	962070	-21	kworker/9:1+i915-unordered	23:10:04	15
743277	99	431	10,418	cyclictest	0	-21	swapper/7	21:45:04	13
743297	99	430	8,29	cyclictest	0	-21	swapper/12	19:20:41	4
743287	99	430	16,414	cyclictest	0	-21	swapper/10	21:56:37	2
743277	99	430	9,419	cyclictest	0	-21	swapper/7	23:59:04	13
743277	99	430	9,419	cyclictest	0	-21	swapper/7	23:40:03	13
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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