OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #0, slot #4

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 rack0slot4.osadl.org (updated Wed Aug 27, 2025 00:46:57)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3333948	99	567	25,44	cyclictest	0	-21	swapper/14	20:28:21	6
3333909	99	537	36,500	cyclictest	0	-21	swapper/2	23:12:21	8
3333926	99	533	33,0	cyclictest	0	-21	swapper/7	22:45:23	13
3333942	99	527	27,499	cyclictest	0	-21	swapper/12	20:07:42	4
3333926	99	526	25,498	cyclictest	0	-21	swapper/7	00:36:43	13
3333926	99	525	38,485	cyclictest	0	-21	swapper/7	20:45:45	13
3333909	99	518	17,498	cyclictest	0	-21	swapper/2	00:03:22	8
3333926	99	512	20,490	cyclictest	0	-21	swapper/7	19:49:20	13
3333926	99	512	20,490	cyclictest	0	-21	swapper/7	19:49:20	13
3333913	99	510	0,42	cyclictest	0	-21	swapper/3	22:19:20	9
3333952	99	505	4,500	cyclictest	0	-21	swapper/15	21:10:43	7
3333952	99	499	494,3	cyclictest	158	1	ktimers/15	20:55:54	7
3333913	99	496	27,0	cyclictest	0	-21	swapper/3	23:27:44	9
3333928	99	493	491,2	cyclictest	3560178	-21	kworker/8:0+i915-unordered	00:28:21	14
3333928	99	493	491,2	cyclictest	3560178	-21	kworker/8:0+i915-unordered	00:28:20	14
3333948	99	490	20,468	cyclictest	0	-21	swapper/14	20:38:20	6
3333916	99	488	21,467	cyclictest	60	-21	ksoftirqd/4	21:59:20	10
3333926	99	486	457,29	cyclictest	0	-21	swapper/7	23:49:21	13
3333952	99	485	484,1	cyclictest	3450118	-21	kworker/15:2+events	21:28:44	7
3333952	99	485	16,469	cyclictest	0	-21	swapper/15	21:33:44	7
3333952	99	483	481,2	cyclictest	3565826	-21	kworker/15:1+events	23:47:51	7
3333919	99	483	482,1	cyclictest	3347537	-21	kworker/5:2+events	19:39:41	11
3333938	99	482	480,2	cyclictest	3544453	-21	kworker/11:1+events	23:21:54	3
3333926	99	482	480,2	cyclictest	3437568	-21	kworker/7:0+events	21:10:43	13
3333906	99	482	15,466	cyclictest	33	-21	ksoftirqd/1	00:17:42	1
3333919	99	481	2,27	cyclictest	69	-21	ksoftirqd/5	22:08:21	11
3333919	99	481	2,27	cyclictest	69	-21	ksoftirqd/5	22:08:21	11
3333913	99	480	478,2	cyclictest	3505736	-21	kworker/3:1+events	00:09:23	9
3333948	99	479	40,438	cyclictest	0	-21	swapper/14	20:49:45	6
3333919	99	479	479,0	cyclictest	3347537	-21	kworker/5:2+events	19:27:21	11
3333919	99	479	23,454	cyclictest	0	-21	swapper/5	22:14:22	11
3333919	99	479	23,454	cyclictest	0	-21	swapper/5	22:14:22	11
3333926	99	476	471,4	cyclictest	3399059	-21	kworker/7:0+events	20:55:55	13
3333919	99	474	37,435	cyclictest	0	-21	swapper/5	21:34:41	11
3333952	99	470	469,1	cyclictest	159	-21	ksoftirqd/15	23:57:44	7
3333919	99	470	31,439	cyclictest	0	-21	swapper/5	23:03:41	11
3333928	99	468	468,0	cyclictest	3371852	-21	kworker/8:1+i915-unordered	20:43:20	14
3333952	99	465	463,2	cyclictest	3467264	-21	kworker/15:2+i915-unordered	22:20:43	7
3333938	99	465	463,2	cyclictest	0	-21	swapper/11	00:09:23	3
3333952	99	464	464,0	cyclictest	3616991	-21	kworker/15:1+i915-unordered	00:36:44	7
3333952	99	463	463,0	cyclictest	3450118	-21	kworker/15:2+i915-unordered	21:22:58	7
3333926	99	463	463,0	cyclictest	3454678	-21	kworker/7:1+i915-unordered	21:33:44	13
3333926	99	462	462,0	cyclictest	0	-21	swapper/7	21:28:44	13
3333903	99	461	461,0	cyclictest	0	-21	swapper/0	19:33:20	0
3333942	99	460	460,0	cyclictest	3386135	-21	kworker/12:1+events	21:59:20	4
3333928	99	460	459,1	cyclictest	3403172	-21	kworker/8:0+i915-unordered	20:29:20	14
3333919	99	460	4,0	cyclictest	0	-21	swapper/5	00:36:43	11
3333952	99	459	457,2	cyclictest	3522904	-21	kworker/15:2+i915-unordered	22:47:21	7
3333952	99	458	457,1	cyclictest	3535960	-21	kworker/15:2+i915-unordered	23:05:20	7
3333916	99	458	458,0	cyclictest	3324732	-21	kworker/4:1+events	20:06:20	10
3333952	99	457	428,29	cyclictest	0	-21	swapper/15	22:04:21	7
3333952	99	457	428,29	cyclictest	0	-21	swapper/15	22:04:21	7
3333928	99	457	455,2	cyclictest	3431770	-21	kworker/8:0+events	21:37:20	14
3333913	99	457	455,2	cyclictest	0	-21	swapper/3	23:06:58	9
3333926	99	456	455,1	cyclictest	0	-21	swapper/7	20:04:54	13
3333916	99	456	456,0	cyclictest	3441880	-21	kworker/4:0+events	21:54:20	10
3333923	99	455	454,1	cyclictest	0	-21	swapper/6	19:14:42	12
3333919	99	455	1,454	cyclictest	0	-21	swapper/5	23:49:20	11
3333919	99	455	0,453	cyclictest	0	-21	swapper/5	19:49:20	11
3333919	99	455	0,453	cyclictest	0	-21	swapper/5	19:49:20	11
3333938	99	453	452,1	cyclictest	3581557	-21	kworker/11:1+i915-unordered	00:12:42	3
3333926	99	453	451,2	cyclictest	3471691	-21	kworker/7:2+events	21:50:21	13
3333952	99	452	451,1	cyclictest	0	-21	swapper/15	21:52:58	7
3333926	99	452	452,0	cyclictest	0	-21	swapper/7	21:24:43	13
3333952	99	451	449,2	cyclictest	3399118	-21	kworker/15:1+i915-unordered	20:25:20	7
3333928	99	451	451,0	cyclictest	3354803	-21	kworker/8:2+events	19:33:20	14
3333926	99	450	450,0	cyclictest	3454678	-21	kworker/7:1+i915-unordered	21:43:58	13
3333926	99	449	449,0	cyclictest	0	-21	swapper/7	00:21:41	13
3333926	99	449	447,2	cyclictest	0	-21	swapper/7	20:14:54	13
3333919	99	449	449,0	cyclictest	0	-21	swapper/5	21:04:20	11
3333913	99	449	21,426	cyclictest	0	-21	swapper/3	23:20:22	9
3333903	99	449	449,0	cyclictest	0	-21	swapper/0	20:43:20	0
3333952	99	448	448,0	cyclictest	3467264	-21	kworker/15:2+events	22:30:20	7
3333926	99	448	448,0	cyclictest	0	-21	swapper/7	21:36:42	13
3333903	99	448	448,0	cyclictest	0	-21	swapper/0	21:40:43	0
3333919	99	447	10,436	cyclictest	0	-21	swapper/5	20:29:41	11
3333913	99	447	19,29	cyclictest	0	-21	swapper/3	00:32:21	9
3333913	99	447	19,29	cyclictest	0	-21	swapper/3	00:32:21	9
3333946	99	446	445,1	cyclictest	655	50	irq/141-i915	19:48:21	5
3333946	99	446	445,1	cyclictest	655	50	irq/141-i915	19:48:21	5
3333926	99	446	446,0	cyclictest	3577230	-21	kworker/7:0+events	23:57:44	13
3333919	99	446	4,441	cyclictest	0	-21	swapper/5	20:07:22	11
3333948	99	445	24,29	cyclictest	0	-21	swapper/14	22:35:58	6
3333919	99	445	445,0	cyclictest	0	-21	swapper/5	21:09:43	11
3333946	99	444	443,1	cyclictest	655	50	irq/141-i915	00:36:44	5
3333909	99	444	22,28	cyclictest	0	-21	swapper/2	22:07:59	8
3333909	99	444	22,28	cyclictest	0	-21	swapper/2	22:07:58	8
3333946	99	443	442,1	cyclictest	655	50	irq/141-i915	21:07:20	5
3333926	99	443	16,29	cyclictest	0	-21	swapper/7	23:04:55	13
3333919	99	443	3,439	cyclictest	0	-21	swapper/5	00:09:22	11
3333923	99	442	440,2	cyclictest	3514345	-21	kworker/6:1+i915-unordered	22:37:21	12
3333909	99	442	18,30	cyclictest	0	-21	swapper/2	23:07:59	8
3333926	99	441	440,1	cyclictest	0	-21	swapper/7	22:20:44	13
3333903	99	441	440,1	cyclictest	0	-21	swapper/0	20:29:21	0
3333946	99	440	440,0	cyclictest	655	50	irq/141-i915	22:08:22	5
3333946	99	440	440,0	cyclictest	655	50	irq/141-i915	22:08:21	5
3333926	99	440	439,1	cyclictest	0	-21	swapper/7	22:32:58	13
3333946	99	439	437,0	cyclictest	655	50	irq/141-i915	19:42:22	5
3333946	99	439	15,29	cyclictest	0	-21	swapper/13	23:51:58	5
3333913	99	439	438,1	cyclictest	3467429	-21	kworker/3:1+i915-unordered	21:43:21	9
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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