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 May 14, 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
3855147	99	527	25,501	cyclictest	0	-21	swapper/7	23:37:15	13
3855147	99	525	25,499	cyclictest	0	-21	swapper/7	23:55:15	13
3855171	99	506	6,498	cyclictest	0	-21	swapper/12	22:26:15	4
3855140	99	471	471,0	cyclictest	3880028	-21	kworker/5:0+i915-unordered	19:41:15	11
3855128	99	465	464,1	cyclictest	0	-21	swapper/2	22:09:15	8
3855128	99	465	464,1	cyclictest	0	-21	swapper/2	22:09:15	8
3855161	99	463	7,59	cyclictest	0	-21	swapper/10	20:09:38	2
3855137	99	462	461,1	cyclictest	3956530	-21	kworker/4:2+i915-unordered	22:26:15	10
3855128	99	461	11,58	cyclictest	0	-21	swapper/2	21:55:15	8
3855183	99	458	457,1	cyclictest	4085242	-21	kworker/15:0+i915-unordered	23:55:15	7
3855183	99	457	456,1	cyclictest	4069206	-21	kworker/15:0+i915-unordered	23:37:15	7
3855171	99	452	27,30	cyclictest	133	-21	ksoftirqd/12	22:11:15	4
3855171	99	452	27,30	cyclictest	133	-21	ksoftirqd/12	22:11:15	4
3855147	99	452	23,425	cyclictest	88	-21	ksoftirqd/7	00:01:15	13
3855143	99	452	0,26	cyclictest	0	-21	swapper/6	22:30:59	12
3855161	99	449	23,28	cyclictest	0	-21	swapper/10	21:03:37	2
3855166	99	448	446,1	cyclictest	3856546	-21	kworker/11:3+i915-unordered	19:09:15	3
3855143	99	448	23,29	cyclictest	0	-21	swapper/6	00:16:36	12
3855132	99	448	447,1	cyclictest	697	50	irq/159-i915	19:09:15	9
3855147	99	447	24,29	cyclictest	0	-21	swapper/7	20:55:15	13
3855147	99	444	19,28	cyclictest	88	-21	ksoftirqd/7	23:05:15	13
3855166	99	442	440,2	cyclictest	3863719	-21	kworker/11:2+i915-unordered	21:04:15	3
3855171	99	441	16,424	cyclictest	133	-21	ksoftirqd/12	19:32:15	4
3855171	99	441	16,424	cyclictest	133	-21	ksoftirqd/12	19:32:15	4
3855147	99	441	17,423	cyclictest	88	-21	ksoftirqd/7	23:31:15	13
3855147	99	441	15,425	cyclictest	88	-21	ksoftirqd/7	22:27:15	13
3855132	99	441	440,1	cyclictest	697	50	irq/159-i915	21:04:15	9
3855161	99	439	13,30	cyclictest	0	-21	swapper/10	23:36:37	2
3855161	99	438	8,30	cyclictest	0	-21	swapper/10	22:46:00	2
3855161	99	437	9,29	cyclictest	0	-21	swapper/10	19:39:58	2
3855161	99	437	15,29	cyclictest	0	-21	swapper/10	21:46:36	2
3855161	99	435	7,30	cyclictest	0	-21	swapper/10	23:32:36	2
3855161	99	434	9,29	cyclictest	0	-21	swapper/10	20:28:58	2
3855161	99	433	6,30	cyclictest	0	-21	swapper/10	22:59:37	2
3855147	99	433	9,29	cyclictest	0	-21	swapper/7	21:15:15	13
3855156	99	432	4,425	cyclictest	0	-21	swapper/9	23:49:57	15
3855161	99	431	428,3	cyclictest	1818	-21	snmpd	22:12:47	2
3855161	99	431	428,3	cyclictest	1818	-21	snmpd	22:12:47	2
3855140	99	431	430,1	cyclictest	1818	-21	snmpd	20:20:48	11
3855140	99	429	21,30	cyclictest	0	-21	swapper/5	20:24:15	11
3855124	99	429	20,30	cyclictest	0	-21	swapper/1	23:15:15	1
3855183	99	428	6,30	cyclictest	0	-21	swapper/15	23:59:15	7
3855179	99	428	0,427	cyclictest	0	-21	swapper/14	22:13:59	6
3855179	99	428	0,427	cyclictest	0	-21	swapper/14	22:13:59	6
3855166	99	428	425,2	cyclictest	4039747	-21	kworker/u64:9+events_unbound	23:34:37	3
3855147	99	428	0,3	cyclictest	0	-21	swapper/7	21:24:49	13
3855128	99	427	6,30	cyclictest	0	-21	swapper/2	20:15:15	8
3855171	99	424	24,396	cyclictest	0	-21	swapper/12	20:28:11	4
3855147	99	424	0,30	cyclictest	88	-21	ksoftirqd/7	21:33:10	13
3855143	99	424	0,30	cyclictest	1818	-21	snmpd	19:51:59	12
3855137	99	424	5,29	cyclictest	0	-21	swapper/4	21:59:15	10
3855166	99	423	421,1	cyclictest	3928223	-21	kworker/11:3+i915-unordered	20:47:15	3
3855151	99	423	0,29	cyclictest	0	-21	swapper/8	22:44:01	14
3855140	99	423	423,0	cyclictest	0	-21	swapper/5	23:25:58	11
3855140	99	423	423,0	cyclictest	0	-21	swapper/5	22:27:58	11
3855140	99	423	423,0	cyclictest	0	-21	swapper/5	21:22:59	11
3855140	99	423	423,0	cyclictest	0	-21	swapper/5	21:04:38	11
3855166	99	422	420,1	cyclictest	3871858	-21	kworker/11:1+i915-unordered	20:04:15	3
3855151	99	422	0,27	cyclictest	0	-21	swapper/8	20:55:00	14
3855147	99	422	26,395	cyclictest	0	-21	swapper/7	00:36:15	13
3855143	99	422	23,397	cyclictest	0	-21	swapper/6	19:47:38	12
3855137	99	422	5,29	cyclictest	0	-21	swapper/4	19:30:15	10
3855137	99	422	5,29	cyclictest	0	-21	swapper/4	19:30:15	10
3855132	99	422	421,1	cyclictest	697	50	irq/159-i915	20:47:15	9
3855183	99	421	420,1	cyclictest	0	-21	swapper/15	23:29:15	7
3855143	99	421	419,1	cyclictest	4004910	-21	kworker/6:2+i915-unordered	22:13:59	12
3855143	99	421	419,1	cyclictest	4004910	-21	kworker/6:2+i915-unordered	22:13:59	12
3855143	99	421	23,396	cyclictest	0	-21	swapper/6	00:21:38	12
3855143	99	421	23,395	cyclictest	0	-21	swapper/6	19:36:38	12
3855143	99	421	23,395	cyclictest	0	-21	swapper/6	19:36:38	12
3855132	99	421	420,1	cyclictest	697	50	irq/159-i915	20:04:15	9
3855174	99	420	24,396	cyclictest	0	-21	swapper/13	19:24:38	5
3855174	99	420	24,396	cyclictest	0	-21	swapper/13	19:24:38	5
3855174	99	420	22,397	cyclictest	0	-21	swapper/13	23:33:38	5
3855143	99	420	23,395	cyclictest	0	-21	swapper/6	00:02:36	12
3855166	99	419	416,3	cyclictest	3880019	-21	kworker/11:4+i915-unordered	20:36:15	3
3855151	99	419	24,394	cyclictest	0	-21	swapper/8	21:48:59	14
3855151	99	419	21,397	cyclictest	0	-21	swapper/8	22:54:01	14
3855147	99	419	417,1	cyclictest	0	-21	swapper/7	21:43:38	13
3855147	99	419	23,395	cyclictest	0	-21	swapper/7	23:24:15	13
3855143	99	419	418,1	cyclictest	3940428	-21	kworker/6:1+i915-unordered	20:54:15	12
3855183	99	418	417,1	cyclictest	0	-21	swapper/15	23:02:37	7
3855166	99	418	416,1	cyclictest	3856546	-21	kworker/11:3+i915-unordered	19:16:15	3
3855151	99	418	21,396	cyclictest	0	-21	swapper/8	20:19:36	14
3855147	99	418	23,394	cyclictest	0	-21	swapper/7	21:19:15	13
3855147	99	418	22,395	cyclictest	0	-21	swapper/7	19:45:15	13
3855128	99	418	418,0	cyclictest	0	-21	swapper/2	20:19:15	8
3855174	99	417	19,397	cyclictest	0	-21	swapper/13	20:48:58	5
3855151	99	417	0,27	cyclictest	0	-21	swapper/8	21:38:38	14
3855132	99	417	416,1	cyclictest	697	50	irq/159-i915	20:36:15	9
3855132	99	417	416,1	cyclictest	697	50	irq/159-i915	19:16:15	9
3855174	99	416	20,395	cyclictest	0	-21	swapper/13	21:13:37	5
3855174	99	416	17,398	cyclictest	0	-21	swapper/13	23:43:37	5
3855174	99	416	16,399	cyclictest	0	-21	swapper/13	21:07:37	5
3855171	99	416	22,393	cyclictest	0	-21	swapper/12	20:14:15	4
3855128	99	416	21,394	cyclictest	0	-21	swapper/2	23:07:15	8
3855124	99	416	416,0	cyclictest	0	-21	swapper/1	23:40:15	1
3855174	99	415	16,398	cyclictest	0	-21	swapper/13	20:41:00	5
3855166	99	415	414,1	cyclictest	3854537	-21	kworker/11:0+i915-unordered	19:26:15	3
3855166	99	415	414,1	cyclictest	3854537	-21	kworker/11:0+i915-unordered	19:26:15	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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