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 Aug 27, 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
2675474	99	527	4,522	cyclictest	0	-21	swapper/1	22:48:57	1
2675477	99	517	515,2	cyclictest	2732653	-21	kworker/2:0+i915-unordered	20:13:57	8
2675477	99	517	515,2	cyclictest	2732653	-21	kworker/2:0+i915-unordered	20:13:57	8
2675477	99	516	515,1	cyclictest	2805060	-21	kworker/2:0+i915-unordered	21:48:57	8
2675477	99	516	515,1	cyclictest	2720767	-21	kworker/2:2+i915-unordered	20:27:57	8
2675477	99	515	514,1	cyclictest	2800926	-21	kworker/2:1+i915-unordered	21:35:57	8
2675477	99	514	513,1	cyclictest	2708458	-21	kworker/2:0+i915-unordered	19:53:57	8
2675530	99	510	508,1	cyclictest	2877446	-21	kworker/15:0+i915-unordered	23:15:57	7
2675477	99	510	508,2	cyclictest	2696355	-21	kworker/2:1+i915-unordered	19:40:57	8
2675477	99	504	25,478	cyclictest	0	-21	swapper/2	20:38:57	8
2675477	99	497	21,475	cyclictest	0	-21	swapper/2	23:15:57	8
2675477	99	495	494,1	cyclictest	2861358	-21	kworker/2:1+i915-unordered	22:53:57	8
2675477	99	495	494,1	cyclictest	2861358	-21	kworker/2:1+i915-unordered	22:53:57	8
2675477	99	494	33,460	cyclictest	0	-21	swapper/2	21:56:57	8
2675474	99	494	20,59	cyclictest	0	-21	swapper/1	20:09:53	1
2675474	99	494	20,59	cyclictest	0	-21	swapper/1	20:09:53	1
2675477	99	488	486,2	cyclictest	2674907	-21	kworker/2:1+i915-unordered	19:11:57	8
2675477	99	487	487,0	cyclictest	0	-21	swapper/2	22:32:57	8
2675477	99	487	486,1	cyclictest	2805060	-21	kworker/2:0+i915-unordered	21:43:57	8
2675477	99	480	478,1	cyclictest	2674907	-21	kworker/2:1+i915-unordered	19:06:57	8
2675482	99	467	466,1	cyclictest	2732595	-21	kworker/3:2+i915-unordered	20:38:57	9
2675474	99	465	161,0	cyclictest	0	-21	swapper/1	23:25:18	1
2675477	99	461	17,29	cyclictest	0	-21	swapper/2	20:03:57	8
2675507	99	460	457,3	cyclictest	1818	-21	snmpd	00:09:29	2
2675493	99	460	9,30	cyclictest	0	-21	swapper/6	21:40:42	12
2675486	99	459	430,29	cyclictest	0	-21	swapper/4	23:35:57	10
2675477	99	459	458,1	cyclictest	0	-21	swapper/2	22:48:57	8
2675496	99	458	12,30	cyclictest	0	-21	swapper/7	20:32:57	13
2675507	99	457	455,1	cyclictest	697	50	irq/159-i915	19:40:57	2
2675477	99	457	456,1	cyclictest	0	-21	swapper/2	23:35:57	8
2675530	99	455	426,29	cyclictest	0	-21	swapper/15	19:28:57	7
2675477	99	454	452,2	cyclictest	0	-21	swapper/2	23:52:57	8
2675486	99	453	452,1	cyclictest	0	-21	swapper/4	21:56:57	10
2675528	99	452	14,28	cyclictest	0	-21	swapper/14	00:05:57	6
2675493	99	451	0,3	cyclictest	0	-21	swapper/6	22:15:31	12
2675474	99	451	2,29	cyclictest	0	-21	swapper/1	23:40:20	1
2675515	99	450	0,448	cyclictest	0	-21	swapper/11	23:13:09	3
2675474	99	450	447,2	cyclictest	2920893	-21	kworker/u64:0+events_unbound	00:19:18	1
2675505	99	449	447,2	cyclictest	2905514	-21	kworker/9:2+pm	00:09:29	15
2675507	99	448	447,1	cyclictest	697	50	irq/159-i915	20:57:57	2
2675515	99	447	416,31	cyclictest	0	-21	swapper/11	20:38:57	3
2675507	99	447	446,1	cyclictest	697	50	irq/159-i915	20:15:57	2
2675505	99	447	25,421	cyclictest	0	-21	swapper/9	00:14:39	15
2675493	99	447	447,0	cyclictest	2723799	-21	kworker/6:2+pm	20:24:52	12
2675528	99	445	8,29	cyclictest	0	-21	swapper/14	23:38:57	6
2675505	99	444	24,418	cyclictest	0	-21	swapper/9	23:44:18	15
2675505	99	444	24,418	cyclictest	0	-21	swapper/9	19:39:39	15
2675507	99	443	442,1	cyclictest	697	50	irq/159-i915	20:25:57	2
2675505	99	443	23,419	cyclictest	0	-21	swapper/9	20:23:19	15
2675493	99	443	22,420	cyclictest	0	-21	swapper/6	19:54:53	12
2675474	99	443	23,419	cyclictest	0	-21	swapper/1	23:11:18	1
2675474	99	443	22,420	cyclictest	0	-21	swapper/1	21:20:21	1
2675528	99	442	26,416	cyclictest	0	-21	swapper/14	22:45:57	6
2675507	99	442	441,1	cyclictest	697	50	irq/159-i915	21:48:57	2
2675507	99	442	19,422	cyclictest	0	-21	swapper/10	19:48:20	2
2675505	99	442	22,418	cyclictest	0	-21	swapper/9	19:19:43	15
2675505	99	442	22,417	cyclictest	0	-21	swapper/9	20:30:40	15
2675496	99	442	1,29	cyclictest	2732897	-21	sleep	20:19:53	13
2675477	99	442	22,419	cyclictest	0	-21	swapper/2	20:56:18	8
2675474	99	442	21,420	cyclictest	0	-21	swapper/1	19:55:18	1
2675507	99	441	440,1	cyclictest	697	50	irq/159-i915	23:53:57	2
2675507	99	441	440,1	cyclictest	697	50	irq/159-i915	20:13:57	2
2675507	99	441	440,1	cyclictest	697	50	irq/159-i915	20:13:57	2
2675507	99	441	18,0	cyclictest	0	-21	swapper/10	21:35:41	2
2675505	99	441	23,417	cyclictest	0	-21	swapper/9	22:36:39	15
2675505	99	441	22,417	cyclictest	0	-21	swapper/9	19:28:20	15
2675505	99	441	18,421	cyclictest	0	-21	swapper/9	20:14:40	15
2675505	99	441	18,421	cyclictest	0	-21	swapper/9	20:14:40	15
2675486	99	441	26,414	cyclictest	0	-21	swapper/4	19:38:57	10
2675477	99	441	0,439	cyclictest	0	-21	swapper/2	22:42:57	8
2675507	99	440	19,418	cyclictest	0	-21	swapper/10	20:08:20	2
2675507	99	440	19,418	cyclictest	0	-21	swapper/10	20:08:20	2
2675507	99	440	19,418	cyclictest	0	-21	swapper/10	19:58:20	2
2675505	99	440	18,420	cyclictest	0	-21	swapper/9	20:36:40	15
2675477	99	440	20,419	cyclictest	0	-21	swapper/2	21:53:18	8
2675474	99	440	437,2	cyclictest	2674995	-21	kworker/u64:3+events_unbound	19:15:21	1
2675474	99	440	18,421	cyclictest	0	-21	swapper/1	19:51:40	1
2675519	99	439	12,30	cyclictest	0	-21	swapper/12	19:07:39	4
2675507	99	439	18,418	cyclictest	0	-21	swapper/10	21:44:20	2
2675505	99	439	19,419	cyclictest	0	-21	swapper/9	23:32:42	15
2675505	99	439	19,419	cyclictest	0	-21	swapper/9	22:24:41	15
2675493	99	439	17,421	cyclictest	0	-21	swapper/6	21:32:20	12
2675474	99	439	20,418	cyclictest	0	-21	swapper/1	21:25:20	1
2675474	99	439	20,418	cyclictest	0	-21	swapper/1	00:29:41	1
2675474	99	439	18,420	cyclictest	0	-21	swapper/1	00:07:18	1
2675474	99	439	17,421	cyclictest	0	-21	swapper/1	21:38:19	1
2675474	99	439	17,421	cyclictest	0	-21	swapper/1	20:55:40	1
2675507	99	438	18,419	cyclictest	0	-21	swapper/10	23:03:41	2
2675507	99	438	18,419	cyclictest	0	-21	swapper/10	23:03:41	2
2675477	99	438	17,420	cyclictest	0	-21	swapper/2	00:04:41	8
2675474	99	438	19,418	cyclictest	0	-21	swapper/1	23:48:18	1
2675474	99	438	19,418	cyclictest	0	-21	swapper/1	22:32:19	1
2675474	99	438	19,418	cyclictest	0	-21	swapper/1	00:34:43	1
2675474	99	438	18,419	cyclictest	0	-21	swapper/1	20:46:18	1
2675507	99	437	17,417	cyclictest	0	-21	swapper/10	20:31:39	2
2675496	99	437	437,0	cyclictest	0	-21	swapper/7	23:15:57	13
2675496	99	437	0,29	cyclictest	0	-21	swapper/7	19:49:53	13
2675477	99	437	17,419	cyclictest	0	-21	swapper/2	00:16:19	8
2675474	99	437	18,418	cyclictest	0	-21	swapper/1	22:22:19	1
2675474	99	437	17,419	cyclictest	0	-21	swapper/1	22:11:18	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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