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 Mar 01, 2026 00:43:46)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
768142	99	524	24,499	cyclictest	0	-21	swapper/4	00:01:18	10
768142	99	503	3,500	cyclictest	0	-21	swapper/4	19:55:18	10
768149	99	496	466,30	cyclictest	0	-21	swapper/6	19:18:18	12
768142	99	482	480,2	cyclictest	0	-21	swapper/4	22:56:18	10
768161	99	472	442,30	cyclictest	0	-21	swapper/9	20:58:18	15
768175	99	467	466,1	cyclictest	954571	-21	kworker/12:2+i915-unordered	00:01:18	4
768171	99	464	23,441	cyclictest	0	-21	swapper/11	21:03:18	3
768171	99	460	3,456	cyclictest	768120	-21	cyclictest	23:52:18	3
768175	99	457	456,1	cyclictest	0	-21	swapper/12	23:48:18	4
768161	99	449	446,2	cyclictest	816486	-21	kworker/u64:9+events_unbound	21:31:40	15
768171	99	447	445,2	cyclictest	878150	-21	kworker/11:0+i915-unordered	22:52:18	3
768149	99	447	446,1	cyclictest	0	-21	swapper/6	20:40:18	12
768175	99	446	444,2	cyclictest	779778	-21	kworker/12:2+i915-unordered	19:55:18	4
768171	99	446	444,2	cyclictest	770745	-21	kworker/11:0+i915-unordered	19:25:18	3
768134	99	446	25,420	cyclictest	0	-21	swapper/2	23:54:40	8
768184	99	443	441,2	cyclictest	0	-21	swapper/14	19:17:18	6
768184	99	441	18,29	cyclictest	0	-21	swapper/14	22:16:04	6
768184	99	440	17,30	cyclictest	0	-21	swapper/14	19:14:04	6
768138	99	440	440,0	cyclictest	0	-21	swapper/3	22:21:40	9
768184	99	438	13,29	cyclictest	0	-21	swapper/14	19:20:02	6
768175	99	435	434,1	cyclictest	0	-21	swapper/12	22:02:18	4
768163	99	434	16,417	cyclictest	0	-21	swapper/10	23:41:42	2
768163	99	434	12,29	cyclictest	0	-21	swapper/10	23:05:18	2
768175	99	433	14,30	cyclictest	0	-21	swapper/12	00:26:18	4
768171	99	433	433,0	cyclictest	0	-21	swapper/11	19:46:18	3
768175	99	432	13,30	cyclictest	0	-21	swapper/12	22:37:18	4
768163	99	432	9,29	cyclictest	0	-21	swapper/10	00:36:02	2
768147	99	431	430,1	cyclictest	0	-21	swapper/5	21:22:41	11
768188	99	430	429,1	cyclictest	0	-21	swapper/15	21:03:18	7
768175	99	429	11,30	cyclictest	0	-21	swapper/12	19:41:18	4
768171	99	429	427,2	cyclictest	0	-21	swapper/11	21:56:16	3
768171	99	429	427,2	cyclictest	0	-21	swapper/11	21:56:16	3
768138	99	429	7,29	cyclictest	0	-21	swapper/3	22:13:40	9
768188	99	428	425,3	cyclictest	1801	-21	snmpd	23:17:52	7
768180	99	428	425,2	cyclictest	768365	-21	kworker/u64:0+events_unbound	20:00:05	5
768171	99	428	427,1	cyclictest	0	-21	swapper/11	20:58:18	3
768171	99	427	4,420	cyclictest	0	-21	swapper/11	21:24:01	3
768138	99	427	426,1	cyclictest	697	50	irq/159-i915	21:03:18	9
768128	99	426	2,30	cyclictest	0	-21	swapper/0	21:04:41	0
768128	99	426	2,30	cyclictest	0	-21	swapper/0	20:49:05	0
768175	99	425	423,1	cyclictest	894094	-21	kworker/12:2+i915-unordered	22:56:18	4
768171	99	425	4,419	cyclictest	0	-21	swapper/11	23:15:03	3
768171	99	425	3,419	cyclictest	0	-21	swapper/11	00:25:41	3
768161	99	425	5,419	cyclictest	0	-21	swapper/9	21:48:40	15
768161	99	425	5,419	cyclictest	0	-21	swapper/9	21:48:40	15
768161	99	425	422,2	cyclictest	921331	-21	kworker/u64:11+events_unbound	00:27:41	15
768128	99	425	1,29	cyclictest	0	-21	swapper/0	20:33:42	0
768128	99	425	0,30	cyclictest	0	-21	swapper/0	21:53:41	0
768128	99	425	0,30	cyclictest	0	-21	swapper/0	21:53:41	0
768128	99	425	0,29	cyclictest	0	-21	swapper/0	19:41:03	0
768175	99	424	421,3	cyclictest	1801	-21	snmpd	21:42:16	4
768161	99	424	4,419	cyclictest	0	-21	swapper/9	20:42:04	15
768153	99	424	423,1	cyclictest	0	-21	swapper/7	21:42:16	13
768180	99	423	421,1	cyclictest	653	50	usb-storage	00:02:42	5
768161	99	423	421,1	cyclictest	902192	-21	kworker/u64:5+events_unbound	23:41:04	15
768161	99	423	1,421	cyclictest	0	-21	swapper/9	00:18:41	15
768180	99	422	421,1	cyclictest	0	-21	swapper/13	22:17:41	5
768147	99	422	420,1	cyclictest	0	-21	swapper/5	19:28:04	11
768142	99	422	26,395	cyclictest	0	-21	swapper/4	22:06:18	10
768138	99	422	421,1	cyclictest	697	50	irq/159-i915	23:52:18	9
768134	99	422	419,2	cyclictest	832897	-21	kworker/u64:10+events_unbound	23:36:18	8
768142	99	420	23,396	cyclictest	0	-21	swapper/4	20:20:18	10
768142	99	420	23,396	cyclictest	0	-21	swapper/4	20:16:01	10
768138	99	420	1,418	cyclictest	0	-21	swapper/3	23:34:01	9
768188	99	419	23,395	cyclictest	0	-21	swapper/15	00:11:18	7
768138	99	419	416,2	cyclictest	829720	-21	kworker/3:2+events	21:24:01	9
768138	99	419	0,418	cyclictest	0	-21	swapper/3	23:17:41	9
768149	99	418	415,2	cyclictest	832897	-21	kworker/u64:10+events_unbound	22:47:18	12
768147	99	418	417,1	cyclictest	0	-21	swapper/5	23:01:01	11
768147	99	418	417,1	cyclictest	0	-21	swapper/5	22:22:42	11
768138	99	418	416,1	cyclictest	653	50	usb-storage	23:03:02	9
768175	99	417	416,1	cyclictest	0	-21	swapper/12	23:02:18	4
768175	99	417	0,30	cyclictest	0	-21	swapper/12	21:31:18	4
768163	99	417	20,396	cyclictest	0	-21	swapper/10	23:49:42	2
768157	99	417	416,0	cyclictest	0	-21	swapper/8	19:58:18	14
768142	99	417	416,1	cyclictest	0	-21	swapper/4	20:06:41	10
768138	99	417	415,2	cyclictest	974569	-21	kworker/3:2+events	00:25:41	9
768138	99	417	414,2	cyclictest	914260	-21	kworker/u64:2+events_unbound	23:11:40	9
768138	99	417	414,2	cyclictest	837832	-21	kworker/u64:0+events_unbound	22:05:03	9
768130	99	417	415,1	cyclictest	805475	-21	kworker/1:2+i915-unordered	20:58:18	1
768128	99	417	17,396	cyclictest	0	-21	swapper/0	20:59:42	0
768184	99	416	414,2	cyclictest	800330	-21	kworker/14:2+i915-unordered	20:40:18	6
768184	99	415	25,390	cyclictest	0	-21	swapper/14	20:38:18	6
768171	99	415	413,2	cyclictest	878150	-21	kworker/11:0+i915-unordered	22:57:18	3
768163	99	415	18,397	cyclictest	0	-21	swapper/10	22:39:40	2
768157	99	415	23,391	cyclictest	0	-21	swapper/8	23:17:03	14
768134	99	415	20,394	cyclictest	0	-21	swapper/2	19:21:18	8
768180	99	414	15,398	cyclictest	0	-21	swapper/13	21:59:41	5
768171	99	414	412,1	cyclictest	786877	-21	kworker/11:2+i915-unordered	19:56:18	3
768163	99	414	15,398	cyclictest	0	-21	swapper/10	23:13:02	2
768163	99	414	15,398	cyclictest	0	-21	swapper/10	22:27:40	2
768163	99	414	15,398	cyclictest	0	-21	swapper/10	20:56:40	2
768153	99	414	22,392	cyclictest	0	-21	swapper/7	23:14:14	13
768138	99	414	412,2	cyclictest	1801	-21	snmpd	19:50:13	9
768134	99	414	23,391	cyclictest	0	-21	swapper/2	19:30:18	8
768134	99	414	20,394	cyclictest	0	-21	swapper/2	19:50:18	8
768128	99	414	414,0	cyclictest	0	-21	swapper/0	23:10:18	0
768163	99	413	412,1	cyclictest	0	-21	swapper/10	19:50:13	2
768163	99	413	16,396	cyclictest	0	-21	swapper/10	23:04:02	2
768163	99	413	16,396	cyclictest	0	-21	swapper/10	19:33:41	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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