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 Thu Sep 17, 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
3932596	99	550	13,536	cyclictest	0	-21	swapper/0	20:18:17	0
3932648	99	532	530,2	cyclictest	3949286	-21	kworker/13:2+i915-unordered	19:33:18	5
3932653	99	521	491,30	cyclictest	0	-21	swapper/15	00:18:17	7
3932610	99	503	502,1	cyclictest	4122441	-21	kworker/4:0+i915-unordered	23:00:17	10
3932610	99	503	502,1	cyclictest	4122441	-21	kworker/4:0+i915-unordered	23:00:17	10
3932602	99	503	0,502	cyclictest	0	-21	swapper/2	23:18:17	8
3932631	99	501	501,0	cyclictest	4138428	-21	kworker/10:1+i915-unordered	23:18:17	2
3932643	99	496	495,1	cyclictest	3993663	-21	kworker/12:0+i915-unordered	20:37:17	4
3932617	99	491	434,28	cyclictest	0	-21	swapper/6	22:40:17	12
3932648	99	488	487,1	cyclictest	0	-21	swapper/13	23:56:17	5
3932607	99	482	452,30	cyclictest	0	-21	swapper/3	20:48:17	9
3932643	99	481	480,1	cyclictest	0	-21	swapper/12	23:00:17	4
3932643	99	481	480,1	cyclictest	0	-21	swapper/12	23:00:17	4
3932637	99	479	477,2	cyclictest	4013746	-21	kworker/11:2+i915-unordered	20:48:17	3
3932621	99	479	478,1	cyclictest	4182772	-21	kworker/7:2+i915-unordered	00:18:17	13
3932650	99	476	475,1	cyclictest	697	50	irq/159-i915	20:48:17	6
3932650	99	475	475,0	cyclictest	697	50	irq/159-i915	21:13:17	6
3932648	99	470	22,447	cyclictest	142	-21	ksoftirqd/13	20:31:17	5
3932629	99	470	24,29	cyclictest	4077517	-21	timerandwakeup	21:59:40	15
3932607	99	468	467,1	cyclictest	4178567	-21	kworker/3:2+i915-unordered	00:15:17	9
3932637	99	465	463,2	cyclictest	3932590	-21	cyclictest	00:15:17	3
3932621	99	465	458,6	cyclictest	1818	-21	snmpd	21:36:29	13
3932653	99	462	460,2	cyclictest	0	-21	swapper/15	21:02:17	7
3932629	99	461	28,432	cyclictest	4190883	-21	sleep	00:29:13	15
3932607	99	459	458,1	cyclictest	0	-21	swapper/3	20:42:17	9
3932610	99	458	457,1	cyclictest	0	-21	swapper/4	20:37:17	10
3932629	99	457	10,29	cyclictest	0	-21	swapper/9	23:59:03	15
3932637	99	456	454,2	cyclictest	4001547	-21	kworker/11:1+i915-unordered	20:42:17	3
3932617	99	456	455,1	cyclictest	0	-21	swapper/6	20:48:17	12
3932629	99	455	448,4	cyclictest	0	-21	swapper/9	21:39:29	15
3932617	99	455	454,1	cyclictest	0	-21	swapper/6	21:13:17	12
3932610	99	453	0,3	cyclictest	0	-21	swapper/4	23:08:50	10
3932610	99	453	0,3	cyclictest	0	-21	swapper/4	23:08:50	10
3932629	99	452	3,28	cyclictest	0	-21	swapper/9	21:57:41	15
3932617	99	451	450,1	cyclictest	0	-21	swapper/6	19:33:18	12
3932629	99	450	6,30	cyclictest	0	-21	swapper/9	19:44:13	15
3932629	99	450	0,30	cyclictest	0	-21	swapper/9	21:32:38	15
3932629	99	449	3,30	cyclictest	0	-21	swapper/9	23:24:38	15
3932621	99	449	447,2	cyclictest	4009678	-21	kworker/7:2+i915-unordered	21:02:17	13
3932629	99	448	3,30	cyclictest	0	-21	swapper/9	21:28:38	15
3932617	99	448	447,1	cyclictest	0	-21	swapper/6	20:42:17	12
3932610	99	448	447,1	cyclictest	4013673	-21	kworker/4:1+pm	20:43:30	10
3932596	99	448	4,28	cyclictest	0	-21	swapper/0	20:45:59	0
3932629	99	447	0,30	cyclictest	0	-21	swapper/9	23:19:02	15
3932615	99	447	444,2	cyclictest	4149650	-21	kworker/u64:3+events_unbound	00:07:17	11
3932650	99	446	445,1	cyclictest	697	50	irq/159-i915	00:15:17	6
3932596	99	446	24,419	cyclictest	0	-21	swapper/0	22:20:03	0
3932650	99	445	444,1	cyclictest	697	50	irq/159-i915	23:00:17	6
3932650	99	445	444,1	cyclictest	697	50	irq/159-i915	23:00:17	6
3932650	99	445	444,1	cyclictest	697	50	irq/159-i915	20:37:17	6
3932650	99	444	443,1	cyclictest	697	50	irq/159-i915	23:56:17	6
3932596	99	444	24,419	cyclictest	0	-21	swapper/0	21:36:39	0
3932617	99	443	443,0	cyclictest	0	-21	swapper/6	23:18:17	12
3932615	99	443	0,30	cyclictest	0	-21	swapper/5	00:20:17	11
3932648	99	442	23,418	cyclictest	0	-21	swapper/13	22:49:40	5
3932637	99	441	0,27	cyclictest	0	-21	swapper/11	22:08:17	3
3932610	99	441	0,440	cyclictest	0	-21	swapper/4	23:19:39	10
3932648	99	440	24,415	cyclictest	0	-21	swapper/13	23:39:39	5
3932637	99	440	0,27	cyclictest	0	-21	swapper/11	20:17:17	3
3932648	99	439	23,415	cyclictest	0	-21	swapper/13	22:18:17	5
3932596	99	439	21,417	cyclictest	0	-21	swapper/0	23:34:40	0
3932650	99	438	436,1	cyclictest	4026632	-21	kworker/14:2+i915-unordered	20:59:39	6
3932629	99	438	19,418	cyclictest	0	-21	swapper/9	21:53:40	15
3932615	99	438	10,30	cyclictest	0	-21	swapper/5	22:07:01	11
3932602	99	438	436,2	cyclictest	0	-21	swapper/2	21:18:52	8
3932600	99	438	437,1	cyclictest	0	-21	swapper/1	21:38:17	1
3932648	99	437	17,419	cyclictest	0	-21	swapper/13	00:09:40	5
3932629	99	437	18,418	cyclictest	0	-21	swapper/9	21:20:00	15
3932625	99	437	436,1	cyclictest	3989644	-21	kworker/8:2+i915-unordered	20:18:17	14
3932631	99	436	434,2	cyclictest	1818	-21	snmpd	21:18:52	2
3932600	99	435	20,415	cyclictest	0	-21	swapper/1	21:08:17	1
3932650	99	434	13,420	cyclictest	0	-21	swapper/14	23:50:03	6
3932648	99	434	14,419	cyclictest	0	-21	swapper/13	23:30:01	5
3932615	99	434	23,411	cyclictest	0	-21	swapper/5	21:00:17	11
3932650	99	433	433,0	cyclictest	0	-21	swapper/14	21:44:40	6
3932650	99	433	12,420	cyclictest	0	-21	swapper/14	20:25:00	6
3932650	99	433	12,420	cyclictest	0	-21	swapper/14	20:25:00	6
3932648	99	433	15,417	cyclictest	0	-21	swapper/13	20:54:40	5
3932629	99	433	13,419	cyclictest	0	-21	swapper/9	21:13:40	15
3932629	99	433	10,422	cyclictest	0	-21	swapper/9	00:03:39	15
3932596	99	433	13,419	cyclictest	0	-21	swapper/0	19:58:01	0
3932650	99	432	10,421	cyclictest	0	-21	swapper/14	22:57:01	6
3932600	99	432	429,2	cyclictest	4025739	-21	kworker/u64:4+events_unbound	22:13:17	1
3932629	99	431	11,419	cyclictest	0	-21	swapper/9	23:44:01	15
3932596	99	431	9,418	cyclictest	0	-21	swapper/0	21:09:39	0
3932596	99	431	15,415	cyclictest	0	-21	swapper/0	23:58:17	0
3932648	99	430	12,417	cyclictest	0	-21	swapper/13	20:49:00	5
3932648	99	430	11,418	cyclictest	0	-21	swapper/13	20:27:01	5
3932648	99	430	11,418	cyclictest	0	-21	swapper/13	20:27:01	5
3932653	99	429	9,419	cyclictest	0	-21	swapper/15	20:37:00	7
3932629	99	429	3,29	cyclictest	0	-21	swapper/9	22:20:38	15
3932617	99	429	427,2	cyclictest	0	-21	swapper/6	23:00:17	12
3932617	99	429	427,2	cyclictest	0	-21	swapper/6	23:00:17	12
3932629	99	428	9,417	cyclictest	0	-21	swapper/9	20:39:01	15
3932629	99	428	10,0	cyclictest	0	-21	swapper/9	19:26:00	15
3932596	99	428	8,417	cyclictest	0	-21	swapper/0	21:52:01	0
3932629	99	427	7,418	cyclictest	0	-21	swapper/9	20:14:59	15
3932629	99	427	6,419	cyclictest	0	-21	swapper/9	00:16:02	15
3932650	99	426	424,1	cyclictest	4054172	-21	kworker/14:1+i915-unordered	21:34:41	6
3932629	99	426	6,418	cyclictest	0	-21	swapper/9	22:46:40	15
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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