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 Nov 08, 2025 00:43:48)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1156881	99	581	14,564	cyclictest	0	-21	swapper/9	23:28:13	15
1156881	99	581	14,564	cyclictest	0	-21	swapper/9	23:28:13	15
1156881	99	563	10,550	cyclictest	0	-21	swapper/9	00:22:13	15
1156856	99	551	22,528	cyclictest	0	-21	swapper/2	20:02:13	8
1156877	99	507	8,498	cyclictest	0	-21	swapper/8	21:48:13	14
1156863	99	504	503,1	cyclictest	1169787	-21	kworker/4:2+i915-unordered	21:59:13	10
1156863	99	495	5,489	cyclictest	0	-21	swapper/4	22:01:13	10
1156847	99	494	22,59	cyclictest	0	-21	swapper/0	21:17:58	0
1156885	99	490	488,2	cyclictest	1374942	-21	kworker/10:1+i915-unordered	23:26:13	2
1156885	99	490	488,2	cyclictest	1374942	-21	kworker/10:1+i915-unordered	23:26:13	2
1156847	99	490	18,58	cyclictest	0	-21	swapper/0	00:02:57	0
1156856	99	489	20,59	cyclictest	0	-21	swapper/2	23:46:13	8
1156847	99	482	481,1	cyclictest	1246547	-21	kworker/0:1+i915-unordered	21:48:13	0
1156904	99	481	479,2	cyclictest	1354818	-21	kworker/14:2+i915-unordered	23:14:13	6
1156866	99	479	478,1	cyclictest	0	-21	swapper/5	20:53:13	11
1156863	99	475	475,0	cyclictest	0	-21	swapper/4	21:51:13	10
1156847	99	474	414,30	cyclictest	0	-21	swapper/0	19:59:55	0
1156871	99	473	469,3	cyclictest	0	-21	swapper/6	21:03:13	12
1156881	99	469	20,445	cyclictest	0	-21	swapper/9	21:18:37	15
1156863	99	468	24,28	cyclictest	0	-21	swapper/4	20:49:13	10
1156881	99	467	19,30	cyclictest	0	-21	swapper/9	20:01:35	15
1156888	99	466	20,28	cyclictest	0	-21	swapper/11	23:48:36	3
1156881	99	465	18,28	cyclictest	0	-21	swapper/9	00:17:57	15
1156863	99	464	8,4	cyclictest	61	-21	ksoftirqd/4	22:55:34	10
1156866	99	463	461,1	cyclictest	0	-21	swapper/5	23:51:13	11
1156904	99	461	459,2	cyclictest	1235543	-21	kworker/14:0+i915-unordered	21:03:13	6
1156871	99	459	458,1	cyclictest	0	-21	swapper/6	23:14:13	12
1156852	99	457	456,1	cyclictest	1258891	-21	kworker/1:2+i915-unordered	21:19:13	1
1156852	99	457	455,2	cyclictest	1178016	-21	kworker/1:1+i915-unordered	19:43:13	1
1156852	99	453	8,29	cyclictest	0	-21	swapper/1	20:51:13	1
1156895	99	451	3,29	cyclictest	0	-21	swapper/12	19:38:35	4
1156847	99	451	448,2	cyclictest	1291718	-21	kworker/0:0+events	22:58:58	0
1156885	99	450	449,1	cyclictest	1190535	-21	kworker/10:2+i915-unordered	20:02:13	2
1156899	99	448	447,1	cyclictest	0	-21	swapper/13	22:59:13	5
1156895	99	447	0,28	cyclictest	0	-21	swapper/12	21:15:58	4
1156888	99	447	23,423	cyclictest	0	-21	swapper/11	23:44:56	3
1156888	99	447	0,28	cyclictest	0	-21	swapper/11	00:33:58	3
1156881	99	447	26,420	cyclictest	0	-21	swapper/9	00:29:36	15
1156895	99	446	25,419	cyclictest	0	-21	swapper/12	20:14:36	4
1156895	99	445	26,417	cyclictest	0	-21	swapper/12	22:44:35	4
1156895	99	445	25,417	cyclictest	0	-21	swapper/12	20:06:36	4
1156856	99	445	23,421	cyclictest	0	-21	swapper/2	00:12:36	8
1156908	99	444	443,1	cyclictest	1223302	-21	kworker/15:1+i915-unordered	20:28:13	7
1156899	99	444	443,1	cyclictest	0	-21	swapper/13	19:12:13	5
1156895	99	444	23,418	cyclictest	0	-21	swapper/12	21:38:36	4
1156888	99	444	26,418	cyclictest	0	-21	swapper/11	21:39:57	3
1156888	99	444	25,419	cyclictest	0	-21	swapper/11	21:55:58	3
1156881	99	443	442,1	cyclictest	0	-21	swapper/9	19:05:58	15
1156856	99	443	24,419	cyclictest	0	-21	swapper/2	21:10:57	8
1156856	99	443	22,419	cyclictest	0	-21	swapper/2	00:24:34	8
1156856	99	443	21,419	cyclictest	0	-21	swapper/2	23:20:57	8
1156852	99	443	442,1	cyclictest	1178016	-21	kworker/1:1+i915-unordered	21:09:13	1
1156863	99	442	441,1	cyclictest	1169787	-21	kworker/4:2+i915-unordered	20:14:13	10
1156856	99	442	19,422	cyclictest	0	-21	swapper/2	21:44:59	8
1156866	99	441	23,418	cyclictest	0	-21	swapper/5	21:37:13	11
1156866	99	441	23,417	cyclictest	0	-21	swapper/5	00:34:13	11
1156856	99	441	20,420	cyclictest	0	-21	swapper/2	20:38:34	8
1156856	99	441	20,420	cyclictest	0	-21	swapper/2	20:38:34	8
1156856	99	441	19,420	cyclictest	0	-21	swapper/2	20:13:59	8
1156856	99	441	19,419	cyclictest	0	-21	swapper/2	23:25:57	8
1156856	99	441	19,419	cyclictest	0	-21	swapper/2	23:25:57	8
1156847	99	441	22,419	cyclictest	0	-21	swapper/0	21:20:35	0
1156885	99	440	437,2	cyclictest	1336878	-21	kworker/u64:2+events_unbound	23:07:13	2
1156856	99	440	21,417	cyclictest	0	-21	swapper/2	21:53:55	8
1156856	99	440	20,418	cyclictest	0	-21	swapper/2	20:24:37	8
1156856	99	440	18,419	cyclictest	0	-21	swapper/2	22:10:58	8
1156852	99	440	439,1	cyclictest	1178016	-21	kworker/1:1+i915-unordered	21:13:13	1
1156847	99	440	26,413	cyclictest	0	-21	swapper/0	23:31:13	0
1156847	99	440	26,413	cyclictest	0	-21	swapper/0	23:31:13	0
1156856	99	439	20,419	cyclictest	0	-21	swapper/2	22:02:56	8
1156856	99	439	17,421	cyclictest	0	-21	swapper/2	20:48:34	8
1156908	99	438	434,1	cyclictest	0	-21	swapper/15	22:55:34	7
1156888	99	438	18,416	cyclictest	0	-21	swapper/11	22:50:34	3
1156881	99	438	435,3	cyclictest	0	-21	swapper/9	19:41:13	15
1156881	99	438	20,416	cyclictest	0	-21	swapper/9	20:43:36	15
1156881	99	438	20,416	cyclictest	0	-21	swapper/9	20:43:36	15
1156881	99	438	17,417	cyclictest	0	-21	swapper/9	21:13:34	15
1156885	99	437	18,0	cyclictest	0	-21	swapper/10	19:53:13	2
1156866	99	437	18,416	cyclictest	0	-21	swapper/5	00:09:13	11
1156859	99	437	436,1	cyclictest	1399965	-21	kworker/3:2+i915-unordered	00:19:13	9
1156899	99	436	16,420	cyclictest	0	-21	swapper/13	23:00:56	5
1156847	99	436	19,416	cyclictest	0	-21	swapper/0	19:35:58	0
1156899	99	435	14,420	cyclictest	0	-21	swapper/13	23:57:36	5
1156885	99	435	17,417	cyclictest	0	-21	swapper/10	21:23:13	2
1156877	99	435	435,0	cyclictest	1403823	-21	kworker/8:0+pm	00:08:06	14
1156875	99	435	23,412	cyclictest	0	-21	swapper/7	21:35:09	13
1156908	99	434	431,3	cyclictest	1423075	-21	kworker/u64:6+events_unbound	00:31:13	7
1156899	99	434	12,421	cyclictest	0	-21	swapper/13	22:52:36	5
1156888	99	434	16,417	cyclictest	0	-21	swapper/11	20:47:36	3
1156885	99	434	23,410	cyclictest	0	-21	swapper/10	00:30:08	2
1156899	99	433	11,421	cyclictest	0	-21	swapper/13	00:31:34	5
1156866	99	433	19,414	cyclictest	0	-21	swapper/5	20:11:13	11
1156856	99	433	15,418	cyclictest	0	-21	swapper/2	21:08:36	8
1156899	99	432	12,419	cyclictest	0	-21	swapper/13	23:37:55	5
1156888	99	432	8,417	cyclictest	0	-21	swapper/11	00:00:34	3
1156856	99	432	11,419	cyclictest	0	-21	swapper/2	20:05:35	8
1156899	99	431	13,417	cyclictest	0	-21	swapper/13	20:27:56	5
1156899	99	431	12,419	cyclictest	0	-21	swapper/13	22:15:36	5
1156875	99	431	17,413	cyclictest	0	-21	swapper/7	20:34:13	13
1156875	99	431	17,413	cyclictest	0	-21	swapper/7	20:34:13	13
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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