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 Tue Aug 11, 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
2929594	99	556	3,552	cyclictest	0	-21	swapper/0	22:56:28	0
2929625	99	549	548,1	cyclictest	3091088	-21	kworker/8:0+i915-unordered	22:56:28	14
2929610	99	541	19,521	cyclictest	0	-21	swapper/4	22:38:28	10
2929637	99	539	21,517	cyclictest	124	-21	ksoftirqd/11	20:08:28	3
2929610	99	538	16,521	cyclictest	0	-21	swapper/4	23:26:27	10
2929637	99	527	12,514	cyclictest	0	-21	swapper/11	20:58:28	3
2929631	99	525	5,519	cyclictest	115	-21	ksoftirqd/10	20:57:28	2
2929637	99	519	0,0	cyclictest	0	-21	swapper/11	23:29:27	3
2929610	99	516	10,505	cyclictest	0	-21	swapper/4	00:26:27	10
2929631	99	513	13,499	cyclictest	0	-21	swapper/10	00:08:27	2
2929637	99	503	502,1	cyclictest	0	-21	swapper/11	00:16:27	3
2929629	99	491	489,2	cyclictest	2970504	-21	kworker/9:2+i915-unordered	19:57:28	15
2929601	99	488	488,0	cyclictest	2999498	-21	kworker/2:1+i915-unordered	20:57:28	8
2929637	99	481	481,0	cyclictest	0	-21	swapper/11	23:31:27	3
2929620	99	480	479,1	cyclictest	3058889	-21	kworker/7:1+i915-unordered	21:47:28	13
2929654	99	477	476,1	cyclictest	0	-21	swapper/15	21:31:28	7
2929601	99	475	474,1	cyclictest	3151647	-21	kworker/2:1+i915-unordered	00:08:27	8
2929617	99	474	26,29	cyclictest	0	-21	swapper/6	20:15:49	12
2929648	99	473	471,2	cyclictest	3006684	-21	kworker/13:1+i915-unordered	21:11:28	5
2929613	99	470	23,30	cyclictest	0	-21	swapper/5	23:01:14	11
2929598	99	469	466,2	cyclictest	2892769	-21	kworker/1:3+i915-unordered	20:01:28	1
2929650	99	467	465,2	cyclictest	2884691	-21	kworker/14:5+i915-unordered	19:34:28	6
2929617	99	466	21,30	cyclictest	0	-21	swapper/6	20:21:28	12
2929601	99	466	4,14	cyclictest	0	-21	swapper/2	22:59:28	8
2929650	99	464	5,12	cyclictest	0	-21	swapper/14	19:28:28	6
2929620	99	464	20,29	cyclictest	0	-21	swapper/7	21:23:28	13
2929648	99	463	463,0	cyclictest	3067936	-21	kworker/13:1+i915-unordered	22:12:28	5
2929620	99	463	23,29	cyclictest	0	-21	swapper/7	19:27:28	13
2929613	99	462	12,30	cyclictest	0	-21	swapper/5	22:11:11	11
2929654	99	460	10,449	cyclictest	0	-21	swapper/15	22:16:28	7
2929617	99	460	13,29	cyclictest	0	-21	swapper/6	20:42:49	12
2929617	99	460	11,29	cyclictest	0	-21	swapper/6	19:36:49	12
2929598	99	460	459,1	cyclictest	0	-21	swapper/1	19:57:28	1
2929654	99	459	5,453	cyclictest	0	-21	swapper/15	19:08:28	7
2929617	99	459	11,30	cyclictest	0	-21	swapper/6	20:51:10	12
2929617	99	458	10,29	cyclictest	0	-21	swapper/6	22:42:12	12
2929654	99	456	453,3	cyclictest	1818	-21	snmpd	20:43:21	7
2929598	99	456	453,2	cyclictest	3111291	-21	kworker/1:0+events	23:38:13	1
2929598	99	456	453,2	cyclictest	3111291	-21	kworker/1:0+events	23:38:13	1
2929629	99	455	454,1	cyclictest	0	-21	swapper/9	23:38:13	15
2929629	99	455	454,1	cyclictest	0	-21	swapper/9	23:38:13	15
2929629	99	455	453,1	cyclictest	0	-21	swapper/9	23:20:49	15
2929617	99	455	7,29	cyclictest	0	-21	swapper/6	21:14:50	12
2929598	99	455	452,2	cyclictest	3107187	-21	kworker/1:5+events	23:20:49	1
2929629	99	452	452,0	cyclictest	0	-21	swapper/9	20:03:49	15
2929620	99	452	8,30	cyclictest	0	-21	swapper/7	19:41:28	13
2929598	99	451	448,2	cyclictest	2933312	-21	kworker/1:5+events	20:19:49	1
2929650	99	450	449,1	cyclictest	2982405	-21	kworker/14:1+i915-unordered	20:44:28	6
2929648	99	450	447,2	cyclictest	2942246	-21	kworker/u64:0+events_unbound	19:36:49	5
2929629	99	450	449,1	cyclictest	0	-21	swapper/9	20:19:49	15
2929650	99	447	0,446	cyclictest	0	-21	swapper/14	20:54:28	6
2929648	99	447	444,2	cyclictest	3097975	-21	kworker/u64:11+events_unbound	22:51:28	5
2929631	99	447	25,421	cyclictest	0	-21	swapper/10	21:02:49	2
2929631	99	447	25,421	cyclictest	0	-21	swapper/10	21:02:49	2
2929620	99	447	447,0	cyclictest	0	-21	swapper/7	21:33:28	13
2929617	99	447	445,1	cyclictest	3075040	-21	kworker/6:2+i915-unordered	22:07:28	12
2929654	99	446	0,445	cyclictest	0	-21	swapper/15	20:20:49	7
2929613	99	446	25,420	cyclictest	0	-21	swapper/5	00:13:12	11
2929598	99	446	444,1	cyclictest	2929132	-21	kworker/1:0+events	19:36:49	1
2929654	99	445	24,420	cyclictest	0	-21	swapper/15	21:14:12	7
2929654	99	445	24,420	cyclictest	0	-21	swapper/15	20:49:11	7
2929654	99	445	24,420	cyclictest	0	-21	swapper/15	19:37:51	7
2929643	99	445	25,419	cyclictest	0	-21	swapper/12	21:34:50	4
2929631	99	445	25,419	cyclictest	0	-21	swapper/10	22:50:50	2
2929631	99	445	24,420	cyclictest	0	-21	swapper/10	20:21:12	2
2929620	99	445	443,1	cyclictest	1818	-21	snmpd	23:11:02	13
2929620	99	445	24,417	cyclictest	0	-21	swapper/7	20:30:23	13
2929613	99	445	22,422	cyclictest	0	-21	swapper/5	23:41:49	11
2929613	99	445	22,422	cyclictest	0	-21	swapper/5	23:41:49	11
2929613	99	445	21,421	cyclictest	0	-21	swapper/5	19:37:11	11
2929654	99	444	22,421	cyclictest	0	-21	swapper/15	23:44:10	7
2929654	99	444	22,421	cyclictest	0	-21	swapper/15	23:44:10	7
2929654	99	444	22,421	cyclictest	0	-21	swapper/15	21:57:50	7
2929643	99	444	25,418	cyclictest	0	-21	swapper/12	20:12:49	4
2929643	99	444	23,420	cyclictest	0	-21	swapper/12	23:34:50	4
2929643	99	444	23,420	cyclictest	0	-21	swapper/12	20:07:49	4
2929629	99	444	444,0	cyclictest	0	-21	swapper/9	19:36:49	15
2929620	99	444	443,1	cyclictest	0	-21	swapper/7	23:38:13	13
2929620	99	444	443,1	cyclictest	0	-21	swapper/7	23:38:13	13
2929620	99	444	22,28	cyclictest	0	-21	swapper/7	19:19:28	13
2929620	99	444	0,30	cyclictest	0	-21	swapper/7	22:26:27	13
2929613	99	444	21,419	cyclictest	0	-21	swapper/5	23:16:13	11
2929594	99	444	442,1	cyclictest	0	-21	swapper/0	23:59:10	0
2929654	99	443	443,0	cyclictest	0	-21	swapper/15	22:59:23	7
2929654	99	443	22,420	cyclictest	0	-21	swapper/15	21:41:50	7
2929629	99	443	440,2	cyclictest	3034769	-21	kworker/u64:5+events_unbound	22:07:13	15
2929613	99	443	22,419	cyclictest	0	-21	swapper/5	22:08:12	11
2929613	99	443	21,421	cyclictest	0	-21	swapper/5	20:38:10	11
2929650	99	442	440,1	cyclictest	2982405	-21	kworker/14:1+i915-unordered	20:34:28	6
2929648	99	442	442,0	cyclictest	0	-21	swapper/13	00:07:25	5
2929643	99	442	23,418	cyclictest	0	-21	swapper/12	21:22:50	4
2929643	99	442	22,419	cyclictest	0	-21	swapper/12	23:02:12	4
2929631	99	442	23,418	cyclictest	0	-21	swapper/10	21:22:12	2
2929617	99	442	442,0	cyclictest	0	-21	swapper/6	21:27:13	12
2929598	99	442	439,2	cyclictest	3019607	-21	kworker/1:0+events	22:07:13	1
2929654	99	441	21,417	cyclictest	0	-21	swapper/15	00:00:23	7
2929654	99	441	19,421	cyclictest	0	-21	swapper/15	21:53:10	7
2929654	99	441	18,422	cyclictest	0	-21	swapper/15	20:03:10	7
2929617	99	441	22,418	cyclictest	0	-21	swapper/6	23:42:49	12
2929617	99	441	22,418	cyclictest	0	-21	swapper/6	23:42:49	12
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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