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 15, 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
2730484	99	558	6,0	cyclictest	0	-21	swapper/13	22:27:20	5
2730484	99	558	6,0	cyclictest	0	-21	swapper/13	22:27:20	5
2730454	99	555	4,0	cyclictest	0	-21	swapper/6	19:26:20	12
2730451	99	551	550,1	cyclictest	2887969	-21	kworker/5:1+i915-unordered	22:27:20	11
2730451	99	551	550,1	cyclictest	2887969	-21	kworker/5:1+i915-unordered	22:27:20	11
2730487	99	539	538,1	cyclictest	2709748	-21	kworker/14:0+i915-unordered	19:26:20	6
2730477	99	522	91,422	cyclictest	2871997	-21	kworker/11:2+i915-unordered	22:01:20	3
2730492	99	518	28,489	cyclictest	0	-21	swapper/15	23:33:20	7
2730481	99	511	509,2	cyclictest	2755484	-21	kworker/12:2+i915-unordered	19:39:20	4
2730481	99	511	509,2	cyclictest	2755484	-21	kworker/12:2+i915-unordered	19:39:20	4
2730487	99	510	4,505	cyclictest	0	-21	swapper/14	20:27:20	6
2730477	99	499	70,420	cyclictest	2795517	-21	kworker/11:2+i915-unordered	20:38:20	3
2730435	99	491	28,7	cyclictest	0	-21	swapper/1	23:30:43	1
2730477	99	490	41,448	cyclictest	0	-21	swapper/11	21:32:20	3
2730477	99	488	25,462	cyclictest	0	-21	swapper/11	23:41:20	3
2730477	99	487	23,463	cyclictest	0	-21	swapper/11	22:27:20	3
2730477	99	487	23,463	cyclictest	0	-21	swapper/11	22:27:20	3
2730481	99	484	482,2	cyclictest	2779271	-21	kworker/12:1+i915-unordered	20:28:20	4
2730477	99	484	10,58	cyclictest	0	-21	swapper/11	21:46:20	3
2730492	99	482	18,463	cyclictest	0	-21	swapper/15	23:26:20	7
2730447	99	481	25,59	cyclictest	0	-21	swapper/4	22:43:06	10
2730481	99	480	479,1	cyclictest	2779271	-21	kworker/12:1+i915-unordered	20:07:20	4
2730451	99	478	477,1	cyclictest	0	-21	swapper/5	20:48:20	11
2730465	99	473	471,2	cyclictest	0	-21	swapper/9	23:41:20	15
2730444	99	473	25,29	cyclictest	0	-21	swapper/3	22:16:04	9
2730477	99	471	470,1	cyclictest	2755130	-21	kworker/11:0+i915-unordered	19:33:20	3
2730477	99	470	7,462	cyclictest	0	-21	swapper/11	19:39:20	3
2730477	99	470	7,462	cyclictest	0	-21	swapper/11	19:39:20	3
2730481	99	469	468,1	cyclictest	2934908	-21	kworker/12:0+i915-unordered	00:34:20	4
2730451	99	467	467,0	cyclictest	0	-21	swapper/5	19:46:20	11
2730451	99	467	467,0	cyclictest	0	-21	swapper/5	19:46:20	11
2730440	99	467	20,29	cyclictest	0	-21	swapper/2	19:55:44	8
2730454	99	466	9,453	cyclictest	0	-21	swapper/6	23:30:43	12
2730435	99	464	462,1	cyclictest	2948254	-21	kworker/1:0+i915-unordered	23:41:20	1
2730487	99	463	17,29	cyclictest	0	-21	swapper/14	21:00:42	6
2730481	99	463	462,1	cyclictest	0	-21	swapper/12	20:18:20	4
2730481	99	463	433,30	cyclictest	0	-21	swapper/12	21:22:20	4
2730465	99	460	459,1	cyclictest	2960226	-21	kworker/9:0+i915-unordered	00:01:20	15
2730465	99	460	0,459	cyclictest	0	-21	swapper/9	21:56:04	15
2730447	99	460	430,30	cyclictest	0	-21	swapper/4	19:39:20	10
2730447	99	460	430,30	cyclictest	0	-21	swapper/4	19:39:20	10
2730440	99	460	459,1	cyclictest	0	-21	swapper/2	22:16:20	8
2730477	99	459	19,439	cyclictest	0	-21	swapper/11	22:58:20	3
2730477	99	457	16,440	cyclictest	0	-21	swapper/11	20:07:20	3
2730492	99	456	22,29	cyclictest	0	-21	swapper/15	20:33:20	7
2730451	99	455	17,59	cyclictest	0	-21	swapper/5	19:11:20	11
2730477	99	454	15,438	cyclictest	0	-21	swapper/11	20:18:20	3
2730440	99	454	5,28	cyclictest	0	-21	swapper/2	22:05:43	8
2730487	99	453	4,447	cyclictest	0	-21	swapper/14	23:11:43	6
2730477	99	453	7,30	cyclictest	0	-21	swapper/11	20:15:16	3
2730440	99	452	4,30	cyclictest	0	-21	swapper/2	23:23:03	8
2730447	99	451	8,29	cyclictest	0	-21	swapper/4	20:17:20	10
2730444	99	450	23,29	cyclictest	0	-21	swapper/3	19:22:41	9
2730477	99	449	4,29	cyclictest	2951590	-21	ls	23:35:43	3
2730435	99	448	0,30	cyclictest	0	-21	swapper/1	19:54:44	1
2730484	99	447	26,420	cyclictest	0	-21	swapper/13	22:18:04	5
2730477	99	447	445,1	cyclictest	0	-21	swapper/11	23:54:20	3
2730477	99	447	29,417	cyclictest	2931850	-21	timerwakeupswit	23:10:41	3
2730484	99	446	26,419	cyclictest	0	-21	swapper/13	23:08:04	5
2730484	99	446	25,420	cyclictest	0	-21	swapper/13	19:27:41	5
2730465	99	446	445,1	cyclictest	0	-21	swapper/9	23:54:20	15
2730451	99	446	25,420	cyclictest	2776207	-21	/usr/sbin/munin	20:00:43	11
2730444	99	446	25,420	cyclictest	0	-21	swapper/3	22:05:04	9
2730444	99	446	23,420	cyclictest	0	-21	swapper/3	00:22:03	9
2730484	99	445	24,420	cyclictest	0	-21	swapper/13	00:23:03	5
2730477	99	445	443,2	cyclictest	0	-21	swapper/11	20:28:20	3
2730459	99	445	24,420	cyclictest	0	-21	swapper/7	23:50:02	13
2730447	99	445	0,444	cyclictest	0	-21	swapper/4	21:37:20	10
2730444	99	445	22,422	cyclictest	0	-21	swapper/3	22:52:41	9
2730487	99	444	25,417	cyclictest	0	-21	swapper/14	23:29:43	6
2730477	99	444	4,30	cyclictest	0	-21	swapper/11	23:09:20	3
2730477	99	444	3,440	cyclictest	0	-21	swapper/11	00:34:20	3
2730470	99	444	22,421	cyclictest	0	-21	swapper/10	19:32:06	2
2730444	99	444	24,419	cyclictest	0	-21	swapper/3	20:26:05	9
2730444	99	444	23,420	cyclictest	0	-21	swapper/3	19:43:04	9
2730444	99	444	23,420	cyclictest	0	-21	swapper/3	19:43:04	9
2730440	99	444	25,417	cyclictest	0	-21	swapper/2	21:15:43	8
2730487	99	443	25,416	cyclictest	0	-21	swapper/14	23:49:41	6
2730484	99	443	22,420	cyclictest	0	-21	swapper/13	21:34:42	5
2730484	99	443	21,421	cyclictest	0	-21	swapper/13	23:13:43	5
2730470	99	443	22,420	cyclictest	0	-21	swapper/10	19:48:04	2
2730470	99	443	22,420	cyclictest	0	-21	swapper/10	19:48:04	2
2730444	99	443	23,418	cyclictest	0	-21	swapper/3	23:36:06	9
2730484	99	442	22,420	cyclictest	0	-21	swapper/13	22:58:43	5
2730477	99	442	439,2	cyclictest	2904066	-21	kworker/11:2+i915-unordered	22:50:41	3
2730470	99	442	20,421	cyclictest	0	-21	swapper/10	20:47:05	2
2730454	99	442	439,3	cyclictest	2767189	-21	kworker/6:1+pm	19:47:32	12
2730454	99	442	439,3	cyclictest	2767189	-21	kworker/6:1+pm	19:47:32	12
2730451	99	442	22,419	cyclictest	0	-21	swapper/5	21:57:06	11
2730444	99	442	22,418	cyclictest	0	-21	swapper/3	19:33:42	9
2730492	99	441	1,30	cyclictest	0	-21	swapper/15	20:41:20	7
2730487	99	441	24,416	cyclictest	0	-21	swapper/14	22:35:41	6
2730487	99	441	22,417	cyclictest	0	-21	swapper/14	21:54:04	6
2730454	99	441	24,416	cyclictest	0	-21	swapper/6	23:21:20	12
2730451	99	441	20,420	cyclictest	0	-21	swapper/5	23:47:03	11
2730477	99	440	436,3	cyclictest	1818	-21	snmpd	20:56:31	3
2730444	99	440	20,417	cyclictest	0	-21	swapper/3	23:56:05	9
2730477	99	438	18,419	cyclictest	0	-21	swapper/11	21:50:43	3
2730451	99	438	18,419	cyclictest	0	-21	swapper/5	23:42:04	11
2730440	99	438	438,0	cyclictest	0	-21	swapper/2	22:22:20	8
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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