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 Sat Mar 21, 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
4156906	99	537	8,528	cyclictest	0	-21	swapper/7	20:25:54	13
4156929	99	536	37,498	cyclictest	0	-21	swapper/12	21:22:53	4
4156929	99	536	37,498	cyclictest	0	-21	swapper/12	21:22:53	4
4156904	99	524	522,2	cyclictest	15908	-21	kworker/6:2+i915-unordered	20:56:54	12
4156906	99	520	21,498	cyclictest	0	-21	swapper/7	20:11:54	13
4156929	99	513	13,499	cyclictest	0	-21	swapper/12	00:18:53	4
4156929	99	513	13,499	cyclictest	0	-21	swapper/12	00:18:53	4
4156929	99	505	23,482	cyclictest	0	-21	swapper/12	22:30:53	4
4156937	99	487	486,1	cyclictest	0	-21	swapper/14	20:56:54	6
4156933	99	487	26,461	cyclictest	0	-21	swapper/13	19:12:54	5
4156895	99	476	20,58	cyclictest	0	-21	swapper/4	21:51:14	10
4156942	99	474	472,2	cyclictest	20097	-21	kworker/15:2+i915-unordered	20:25:54	7
4156942	99	457	456,1	cyclictest	7911	-21	kworker/15:1+i915-unordered	20:11:54	7
4156895	99	451	450,1	cyclictest	0	-21	swapper/4	00:03:53	10
4156892	99	451	451,0	cyclictest	697	50	irq/159-i915	19:12:54	9
4156933	99	450	449,1	cyclictest	4176349	-21	kworker/13:1+i915-unordered	19:31:54	5
4156895	99	449	21,30	cyclictest	0	-21	swapper/4	22:14:35	10
4156895	99	446	19,29	cyclictest	0	-21	swapper/4	21:12:40	10
4156933	99	445	23,30	cyclictest	0	-21	swapper/13	21:00:53	5
4156895	99	444	18,29	cyclictest	0	-21	swapper/4	20:39:15	10
4156924	99	443	442,1	cyclictest	0	-21	swapper/11	19:12:54	3
4156933	99	439	439,0	cyclictest	0	-21	swapper/13	00:23:53	5
4156933	99	439	439,0	cyclictest	0	-21	swapper/13	00:23:53	5
4156919	99	438	15,28	cyclictest	115	-21	ksoftirqd/10	23:17:53	2
4156942	99	437	18,30	cyclictest	0	-21	swapper/15	20:00:53	7
4156942	99	436	431,4	cyclictest	1818	-21	snmpd	22:26:48	7
4156919	99	436	12,29	cyclictest	0	-21	swapper/10	22:11:37	2
4156881	99	435	432,2	cyclictest	4166448	-21	kworker/0:6+events	19:40:17	0
4156942	99	434	432,2	cyclictest	1818	-21	snmpd	22:46:25	7
4156942	99	434	432,2	cyclictest	0	-21	swapper/15	22:17:53	7
4156933	99	434	432,2	cyclictest	48224	-21	kworker/13:1+i915-unordered	20:55:54	5
4156892	99	432	431,1	cyclictest	697	50	irq/159-i915	00:03:53	9
4156900	99	430	10,28	cyclictest	0	-21	swapper/5	19:42:53	11
4156883	99	429	2,29	cyclictest	4181185	-21	timerandwakeup	19:35:17	1
4156911	99	428	12,416	cyclictest	0	-21	swapper/8	00:05:16	14
4156883	99	426	17,406	cyclictest	0	-21	swapper/1	21:42:53	1
4156911	99	424	421,2	cyclictest	188860	-21	kworker/u64:3+events_unbound	23:52:54	14
4156883	99	424	2,419	cyclictest	0	-21	swapper/1	22:00:15	1
4156924	99	423	422,1	cyclictest	0	-21	swapper/11	00:03:53	3
4156900	99	423	15,405	cyclictest	0	-21	swapper/5	21:42:53	11
4156919	99	422	15,404	cyclictest	0	-21	swapper/10	21:42:53	2
4156929	99	421	24,396	cyclictest	0	-21	swapper/12	19:17:54	4
4156919	99	421	1,419	cyclictest	0	-21	swapper/10	20:58:38	2
4156904	99	421	420,1	cyclictest	97516	-21	kworker/6:0+i915-unordered	21:55:16	12
4156881	99	421	26,395	cyclictest	0	-21	swapper/0	21:30:15	0
4156881	99	421	26,395	cyclictest	0	-21	swapper/0	21:30:15	0
4156929	99	420	25,394	cyclictest	0	-21	swapper/12	20:33:53	4
4156924	99	420	1,418	cyclictest	0	-21	swapper/11	22:23:53	3
4156914	99	420	0,30	cyclictest	0	-21	swapper/9	23:18:53	15
4156906	99	419	22,396	cyclictest	0	-21	swapper/7	00:30:16	13
4156895	99	419	417,2	cyclictest	32221	-21	kworker/4:2+i915-unordered	21:22:53	10
4156895	99	419	417,2	cyclictest	32221	-21	kworker/4:2+i915-unordered	21:22:53	10
4156911	99	418	22,395	cyclictest	0	-21	swapper/8	21:53:37	14
4156906	99	418	21,396	cyclictest	0	-21	swapper/7	23:15:37	13
4156914	99	417	23,393	cyclictest	0	-21	swapper/9	23:10:53	15
4156911	99	417	20,396	cyclictest	0	-21	swapper/8	19:16:37	14
4156906	99	417	19,397	cyclictest	0	-21	swapper/7	23:05:39	13
4156906	99	417	18,398	cyclictest	0	-21	swapper/7	22:52:15	13
4156906	99	417	17,399	cyclictest	0	-21	swapper/7	22:49:16	13
4156906	99	417	17,399	cyclictest	0	-21	swapper/7	21:42:39	13
4156906	99	417	14,402	cyclictest	0	-21	swapper/7	23:03:36	13
4156900	99	417	22,395	cyclictest	0	-21	swapper/5	23:39:14	11
4156895	99	417	416,1	cyclictest	213002	-21	kworker/4:0+i915-unordered	00:18:53	10
4156895	99	417	416,1	cyclictest	213002	-21	kworker/4:0+i915-unordered	00:18:53	10
4156914	99	416	23,393	cyclictest	0	-21	swapper/9	00:25:53	15
4156914	99	416	23,393	cyclictest	0	-21	swapper/9	00:25:53	15
4156911	99	416	20,396	cyclictest	0	-21	swapper/8	19:27:39	14
4156906	99	416	16,399	cyclictest	0	-21	swapper/7	19:10:17	13
4156881	99	416	20,396	cyclictest	0	-21	swapper/0	23:59:36	0
4156881	99	416	18,397	cyclictest	1512	50	irq/162-enp3s0-rx-0	19:23:39	0
4156906	99	415	16,398	cyclictest	0	-21	swapper/7	22:40:39	13
4156906	99	415	16,398	cyclictest	0	-21	swapper/7	22:16:14	13
4156906	99	415	16,398	cyclictest	0	-21	swapper/7	21:07:37	13
4156892	99	415	414,1	cyclictest	697	50	irq/159-i915	21:21:53	9
4156892	99	415	414,1	cyclictest	697	50	irq/159-i915	21:21:53	9
4156892	99	415	414,1	cyclictest	697	50	irq/159-i915	00:28:53	9
4156892	99	415	414,1	cyclictest	697	50	irq/159-i915	00:28:53	9
4156937	99	414	413,1	cyclictest	0	-21	swapper/14	21:55:16	6
4156914	99	414	1,412	cyclictest	0	-21	swapper/9	00:31:53	15
4156911	99	414	20,394	cyclictest	0	-21	swapper/8	20:24:36	14
4156911	99	414	18,396	cyclictest	0	-21	swapper/8	23:44:37	14
4156906	99	414	14,399	cyclictest	0	-21	swapper/7	19:22:39	13
4156900	99	414	18,395	cyclictest	0	-21	swapper/5	21:25:15	11
4156900	99	414	18,395	cyclictest	0	-21	swapper/5	21:25:15	11
4156881	99	414	20,394	cyclictest	0	-21	swapper/0	23:20:39	0
4156929	99	413	411,2	cyclictest	0	-21	swapper/12	21:43:15	4
4156919	99	413	17,394	cyclictest	0	-21	swapper/10	23:10:14	2
4156911	99	413	18,395	cyclictest	0	-21	swapper/8	21:41:37	14
4156911	99	413	17,395	cyclictest	0	-21	swapper/8	22:48:37	14
4156906	99	413	14,398	cyclictest	0	-21	swapper/7	23:12:15	13
4156906	99	413	14,398	cyclictest	0	-21	swapper/7	20:49:36	13
4156906	99	413	13,399	cyclictest	0	-21	swapper/7	21:46:36	13
4156892	99	413	410,2	cyclictest	131615	-21	kworker/u64:12+events_unbound	23:08:37	9
4156881	99	413	15,397	cyclictest	0	-21	swapper/0	20:59:39	0
4156942	99	412	22,389	cyclictest	0	-21	swapper/15	19:43:53	7
4156933	99	412	21,391	cyclictest	0	-21	swapper/13	19:55:53	5
4156933	99	412	17,394	cyclictest	0	-21	swapper/13	19:18:54	5
4156929	99	412	411,1	cyclictest	0	-21	swapper/12	21:57:37	4
4156929	99	412	18,394	cyclictest	133	-21	ksoftirqd/12	21:27:53	4
4156929	99	412	18,394	cyclictest	133	-21	ksoftirqd/12	21:27:53	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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