OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack1slot6s.osadl.org (updated Mon May 11, 2026 12:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
6264	99	103	4,26	cyclictest	0	-21	swapper/1	09:08:24	1
6264	99	96	4,24	cyclictest	0	-21	swapper/1	07:54:56	1
6264	99	94	9,61	cyclictest	0	-21	swapper/1	06:50:13	1
6264	99	94	4,83	cyclictest	0	-21	swapper/1	09:04:03	1
6264	99	92	9,18	cyclictest	30644	-21	cstates	07:34:54	1
6264	99	92	32,52	cyclictest	9430	-21	cpuspeed_turbos	10:14:48	1
6264	99	91	5,66	cyclictest	20844	-21	fschecks_time	07:19:57	1
6264	99	90	5,63	cyclictest	0	-21	swapper/1	08:00:12	1
6264	99	90	4,24	cyclictest	0	-21	swapper/1	10:00:22	1
6264	99	90	4,24	cyclictest	0	-21	swapper/1	08:16:38	1
6264	99	90	4,24	cyclictest	0	-21	swapper/1	07:18:28	1
6264	99	90	4,24	cyclictest	0	-21	swapper/1	07:13:36	1
6264	99	90	4,23	cyclictest	10289	-21	rm	09:27:57	1
11599	2	90	0,3	sleep0	4	1	ktimersoftd/0	05:00:00	0
6264	99	89	5,23	cyclictest	0	-21	swapper/1	09:11:41	1
6264	99	89	4,27	cyclictest	0	-21	swapper/1	09:29:52	1
6264	99	89	4,27	cyclictest	0	-21	swapper/1	09:29:52	1
6264	99	89	4,25	cyclictest	0	-21	swapper/1	10:05:20	1
6264	99	89	4,23	cyclictest	0	-21	swapper/1	09:35:57	1
6264	99	89	4,23	cyclictest	0	-21	swapper/1	09:16:04	1
6264	99	89	21,11	cyclictest	0	-21	swapper/1	08:30:21	1
6264	99	89	20,14	cyclictest	0	-21	swapper/1	05:05:10	1
6264	99	89	19,12	cyclictest	0	-21	swapper/1	08:24:51	1
6264	99	89	16,12	cyclictest	0	-21	swapper/1	07:50:50	1
6264	99	88	5,66	cyclictest	0	-21	swapper/1	06:59:42	1
6264	99	88	5,24	cyclictest	0	-21	swapper/1	10:11:14	1
6264	99	88	5,24	cyclictest	0	-21	swapper/1	10:11:14	1
6264	99	88	4,26	cyclictest	0	-21	swapper/1	06:54:56	1
6264	99	88	4,25	cyclictest	0	-21	swapper/1	08:19:49	1
6264	99	88	4,23	cyclictest	26021	-21	ssh	09:50:05	1
6264	99	88	4,22	cyclictest	0	-21	swapper/1	08:54:52	1
6264	99	88	4,21	cyclictest	6497	-21	expr	08:34:52	1
6264	99	88	16,11	cyclictest	30378	-21	ssh	09:57:21	1
6264	99	87	5,27	cyclictest	0	-21	swapper/1	09:20:59	1
6264	99	87	5,27	cyclictest	0	-21	swapper/1	06:16:19	1
6264	99	87	4,23	cyclictest	0	-21	swapper/1	08:05:03	1
6264	99	87	4,23	cyclictest	0	-21	swapper/1	08:05:03	1
6264	99	87	4,23	cyclictest	0	-21	swapper/1	07:49:24	1
6264	99	87	4,20	cyclictest	26939	-21	ssh	07:29:52	1
6264	99	87	3,20	cyclictest	22926	-21	ntp_offset	08:10:05	1
6264	99	86	4,26	cyclictest	0	-21	swapper/1	07:40:48	1
6264	99	86	4,22	cyclictest	0	-21	swapper/1	07:24:58	1
6264	99	86	3,27	cyclictest	0	-21	swapper/1	09:44:54	1
6264	99	86	20,12	cyclictest	0	-21	swapper/1	08:45:06	1
6264	99	85	6,18	cyclictest	0	-21	swapper/1	06:39:42	1
6264	99	85	5,22	cyclictest	0	-21	swapper/1	08:54:14	1
6264	99	85	5,22	cyclictest	0	-21	swapper/1	08:54:14	1
6264	99	85	4,29	cyclictest	0	-21	swapper/1	06:05:09	1
6264	99	85	4,29	cyclictest	0	-21	swapper/1	06:05:09	1
6264	99	85	4,25	cyclictest	0	-21	swapper/1	08:44:36	1
6264	99	85	4,24	cyclictest	0	-21	swapper/1	09:42:18	1
6264	99	85	26,50	cyclictest	10616	-21	gltestperf	07:05:00	1
6264	99	84	5,28	cyclictest	0	-21	swapper/1	06:09:54	1
6264	99	84	4,72	cyclictest	30104	-21	crond	05:39:44	1
6264	99	84	4,70	cyclictest	0	-21	swapper/1	05:15:03	1
6264	99	84	4,28	cyclictest	0	-21	swapper/1	05:30:09	1
6264	99	84	4,25	cyclictest	0	-21	swapper/1	05:53:05	1
6264	99	84	3,28	cyclictest	0	-21	swapper/1	06:29:52	1
6264	99	84	29,49	cyclictest	23135	-21	sshd	05:24:45	1
6264	99	84	29,49	cyclictest	23135	-21	sshd	05:24:45	1
6264	99	84	14,14	cyclictest	0	-21	swapper/1	05:39:55	1
6262	99	83	7,59	cyclictest	14866	-21	munin-node	08:00:07	0
6262	99	83	4,61	cyclictest	0	-21	swapper/0	09:14:47	0
6262	99	83	3,63	cyclictest	0	-21	swapper/0	08:14:56	0
6264	99	82	4,72	cyclictest	9464	-21	cut	04:55:02	1
6264	99	82	4,55	cyclictest	0	-21	swapper/1	06:29:41	1
6264	99	82	4,27	cyclictest	0	-21	swapper/1	05:55:17	1
6264	99	82	20,13	cyclictest	0	-21	swapper/1	05:45:04	1
6262	99	82	5,70	cyclictest	5500	-21	ssh	06:58:16	0
6262	99	82	5,70	cyclictest	0	-21	swapper/0	06:25:11	0
6262	99	82	30,46	cyclictest	0	-21	swapper/0	09:58:59	0
6262	99	81	5,37	cyclictest	0	-21	swapper/0	09:06:37	0
6262	99	80	5,46	cyclictest	0	-21	swapper/0	07:45:01	0
6262	99	80	4,69	cyclictest	0	-21	swapper/0	09:34:58	0
6262	99	80	10,54	cyclictest	0	-21	swapper/0	10:05:10	0
6264	99	79	5,61	cyclictest	0	-21	swapper/1	04:50:18	1
6264	99	79	25,47	cyclictest	7794	-21	cpu	05:59:55	1
6264	99	79	24,48	cyclictest	12591	-21	proc_pri	05:00:14	1
6262	99	79	4,49	cyclictest	0	-21	swapper/0	08:20:00	0
6262	99	79	3,69	cyclictest	14107	-21	ssh	08:45:02	0
6262	99	79	3,68	cyclictest	31580	-21	ssh	07:35:08	0
6262	99	79	3,57	cyclictest	5205	-21	hwlatdetect	09:19:56	0
6262	99	79	21,35	cyclictest	13494	-21	ssh	07:55:40	0
6262	99	79	10,55	cyclictest	0	-21	swapper/0	06:54:40	0
6264	99	78	20,7	cyclictest	17350	-21	proc_pri	05:10:13	1
6264	99	78	18,10	cyclictest	27171	-21	df_abs	06:39:56	1
6264	99	78	11,13	cyclictest	0	-21	swapper/1	06:19:54	1
6262	99	78	8,54	cyclictest	0	-21	swapper/0	09:32:07	0
6262	99	78	8,54	cyclictest	0	-21	swapper/0	09:32:07	0
6262	99	78	6,56	cyclictest	17140	-21	tail	08:49:56	0
6262	99	78	6,56	cyclictest	17140	-21	tail	08:49:56	0
6262	99	78	5,67	cyclictest	0	-21	swapper/0	08:11:28	0
6262	99	78	5,54	cyclictest	0	-21	swapper/0	07:14:51	0
6262	99	78	33,40	cyclictest	20044	-21	timerwakeupswit	05:15:17	0
6262	99	78	3,69	cyclictest	0	-21	swapper/0	05:50:01	0
6262	99	78	3,67	cyclictest	24407	-21	grep	07:24:58	0
6262	99	78	28,29	cyclictest	22446	-21	ssh	07:21:49	0
6262	99	78	21,41	cyclictest	24521	1	munin-node	09:49:50	0
6262	99	78	16,46	cyclictest	0	-21	swapper/0	07:10:43	0
6264	99	77	3,18	cyclictest	29252	-21	runrttasks	06:44:54	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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