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 Aug 01, 2026 00:43:48)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3360478	2	864	0,5	sleep11	0	-21	swapper/11	19:01:02	3
3363754	99	595	71,523	cyclictest	87	1	ktimers/7	21:21:46	13
3363754	99	559	0,558	cyclictest	0	-21	swapper/7	22:36:46	13
3363742	99	541	540,1	cyclictest	0	-21	swapper/4	19:49:47	10
3363732	99	528	6,521	cyclictest	0	-21	swapper/1	23:13:46	1
3363781	99	527	5,521	cyclictest	0	-21	swapper/13	00:18:46	5
3363761	99	515	24,490	cyclictest	0	-21	swapper/9	20:01:47	15
3363739	99	514	24,490	cyclictest	0	-21	swapper/3	21:13:46	9
3363766	99	512	482,30	cyclictest	0	-21	swapper/10	23:19:46	2
3363761	99	508	507,1	cyclictest	0	-21	swapper/9	20:06:47	15
3363761	99	505	503,2	cyclictest	0	-21	swapper/9	22:49:46	15
3363732	99	502	13,488	cyclictest	0	-21	swapper/1	21:42:46	1
3363761	99	501	500,1	cyclictest	3561560	-21	kworker/9:2+i915-unordered	23:13:46	15
3363735	99	501	22,58	cyclictest	0	-21	swapper/2	22:42:30	8
3363761	99	498	468,30	cyclictest	0	-21	swapper/9	22:51:46	15
3363761	99	498	26,57	cyclictest	0	-21	swapper/9	21:51:46	15
3363766	99	495	465,30	cyclictest	0	-21	swapper/10	20:37:47	2
3363761	99	493	491,2	cyclictest	0	-21	swapper/9	22:39:46	15
3363789	99	488	487,1	cyclictest	3424940	-21	kworker/15:2+i915-unordered	21:08:46	7
3363747	99	487	485,2	cyclictest	3585823	-21	kworker/5:6+i915-unordered	00:18:46	11
3363754	99	486	7,58	cyclictest	0	-21	swapper/7	20:20:09	13
3363742	99	484	9,59	cyclictest	0	-21	swapper/4	00:02:46	10
3363789	99	482	481,1	cyclictest	3509445	-21	kworker/15:1+i915-unordered	22:31:46	7
3363761	99	480	479,1	cyclictest	0	-21	swapper/9	19:59:47	15
3363761	99	478	477,1	cyclictest	0	-21	swapper/9	20:31:47	15
3363739	99	476	475,1	cyclictest	0	-21	swapper/3	21:49:46	9
3363761	99	475	475,0	cyclictest	3481389	-21	kworker/9:1+i915-unordered	21:42:46	15
3363777	99	474	24,447	cyclictest	0	-21	swapper/12	00:21:09	4
3363735	99	472	21,29	cyclictest	0	-21	swapper/2	20:43:09	8
3363754	99	470	16,2	cyclictest	0	-21	swapper/7	00:16:46	13
3363735	99	470	21,30	cyclictest	0	-21	swapper/2	21:54:08	8
3363735	99	469	21,30	cyclictest	0	-21	swapper/2	20:22:29	8
3363784	99	468	467,1	cyclictest	3529295	-21	kworker/14:2+i915-unordered	22:32:46	6
3363784	99	468	466,2	cyclictest	3501325	-21	kworker/14:1+i915-unordered	21:59:46	6
3363751	99	468	22,30	cyclictest	0	-21	swapper/6	00:23:29	12
3363739	99	468	4,463	cyclictest	0	-21	swapper/3	19:59:47	9
3363735	99	468	20,30	cyclictest	0	-21	swapper/2	20:59:09	8
3363735	99	468	18,30	cyclictest	0	-21	swapper/2	23:49:29	8
3363732	99	468	9,458	cyclictest	0	-21	swapper/1	23:01:46	1
3363777	99	467	22,30	cyclictest	0	-21	swapper/12	00:04:46	4
3363735	99	467	23,29	cyclictest	0	-21	swapper/2	23:59:28	8
3363751	99	465	464,1	cyclictest	697	50	irq/159-i915	20:06:47	12
3363739	99	465	24,30	cyclictest	0	-21	swapper/3	00:01:46	9
3363754	99	464	16,30	cyclictest	0	-21	swapper/7	22:32:08	13
3363739	99	464	20,29	cyclictest	52	-21	ksoftirqd/3	22:22:46	9
3363739	99	464	20,29	cyclictest	52	-21	ksoftirqd/3	22:22:46	9
3363739	99	464	20,29	cyclictest	0	-21	swapper/3	19:44:46	9
3363739	99	464	20,29	cyclictest	0	-21	swapper/3	19:44:46	9
3363754	99	463	15,29	cyclictest	0	-21	swapper/7	22:22:31	13
3363754	99	463	15,29	cyclictest	0	-21	swapper/7	22:22:31	13
3363789	99	462	462,0	cyclictest	0	-21	swapper/15	21:02:46	7
3363789	99	462	460,2	cyclictest	3541452	-21	kworker/15:2+i915-unordered	00:29:46	7
3363789	99	461	459,2	cyclictest	3476988	-21	kworker/15:0+i915-unordered	21:21:46	7
3363789	99	461	17,30	cyclictest	0	-21	swapper/15	19:17:47	7
3363784	99	459	457,2	cyclictest	3501325	-21	kworker/14:1+i915-unordered	22:04:46	6
3363739	99	459	23,30	cyclictest	0	-21	swapper/3	19:31:46	9
3363739	99	459	23,30	cyclictest	0	-21	swapper/3	19:31:46	9
3363777	99	456	455,1	cyclictest	0	-21	swapper/12	23:31:46	4
3363774	99	456	13,28	cyclictest	0	-21	swapper/11	19:39:46	3
3363774	99	456	13,28	cyclictest	0	-21	swapper/11	19:39:46	3
3363754	99	456	7,28	cyclictest	0	-21	swapper/7	20:03:08	13
3363754	99	456	5,30	cyclictest	0	-21	swapper/7	22:26:32	13
3363754	99	456	5,30	cyclictest	0	-21	swapper/7	22:26:32	13
3363751	99	456	454,2	cyclictest	697	50	irq/159-i915	22:32:46	12
3363754	99	454	7,30	cyclictest	0	-21	swapper/7	20:40:42	13
3363751	99	454	453,1	cyclictest	697	50	irq/159-i915	21:59:46	12
3363735	99	454	4,30	cyclictest	0	-21	swapper/2	20:46:29	8
3363761	99	453	453,0	cyclictest	3533434	-21	kworker/9:0+i915-unordered	23:01:46	15
3363761	99	453	453,0	cyclictest	0	-21	swapper/9	22:28:30	15
3363761	99	453	453,0	cyclictest	0	-21	swapper/9	22:28:30	15
3363777	99	452	4,29	cyclictest	0	-21	swapper/12	20:46:08	4
3363754	99	452	4,30	cyclictest	0	-21	swapper/7	21:40:08	13
3363758	99	449	448,1	cyclictest	1818	-21	snmpd	22:16:18	14
3363758	99	449	448,1	cyclictest	1818	-21	snmpd	22:16:18	14
3363789	99	448	447,1	cyclictest	3509445	-21	kworker/15:1+i915-unordered	22:36:46	7
3363777	99	448	26,421	cyclictest	0	-21	swapper/12	20:31:09	4
3363751	99	448	447,1	cyclictest	0	-21	swapper/6	23:58:39	12
3363739	99	448	8,439	cyclictest	0	-21	swapper/3	19:14:47	9
3363735	99	448	447,1	cyclictest	3562446	-21	kworker/2:0+i915-unordered	23:19:46	8
3363777	99	447	24,420	cyclictest	0	-21	swapper/12	21:12:30	4
3363761	99	447	6,29	cyclictest	0	-21	swapper/9	20:29:46	15
3363777	99	446	25,420	cyclictest	0	-21	swapper/12	23:08:30	4
3363777	99	446	25,420	cyclictest	0	-21	swapper/12	21:57:32	4
3363777	99	445	25,419	cyclictest	0	-21	swapper/12	23:52:07	4
3363751	99	445	444,1	cyclictest	697	50	irq/159-i915	22:04:46	12
3363761	99	444	443,1	cyclictest	0	-21	swapper/9	19:16:08	15
3363761	99	444	3,29	cyclictest	0	-21	swapper/9	19:21:47	15
3363784	99	443	440,2	cyclictest	3601801	-21	kworker/14:0+i915-unordered	00:09:46	6
3363777	99	443	21,421	cyclictest	0	-21	swapper/12	21:25:09	4
3363766	99	443	3,29	cyclictest	0	-21	swapper/10	22:20:42	2
3363766	99	443	3,29	cyclictest	0	-21	swapper/10	22:20:42	2
3363754	99	443	22,420	cyclictest	0	-21	swapper/7	19:51:24	13
3363739	99	443	19,418	cyclictest	3592938	-21	smart_nvme0n1	23:46:09	9
3363758	99	442	0,25	cyclictest	0	-21	swapper/8	19:56:32	14
3363747	99	442	0,29	cyclictest	0	-21	swapper/5	00:12:46	11
3363739	99	442	442,0	cyclictest	0	-21	swapper/3	19:37:08	9
3363739	99	442	442,0	cyclictest	0	-21	swapper/3	19:37:08	9
3363739	99	442	24,417	cyclictest	0	-21	swapper/3	23:13:10	9
3363728	99	442	440,1	cyclictest	3610019	-21	kworker/u64:2+events_unbound	00:16:46	0
3363777	99	441	22,418	cyclictest	0	-21	swapper/12	23:28:10	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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