OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #f, slot #0

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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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance

Characteristics of the 100 highest latencies:

System rackfslot0.osadl.org (updated Sat Aug 08, 2026 00:57:40)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3829839	99	179	86,12	cyclictest	0	-21	swapper/16	20:05:17	8
3829839	99	179	86,12	cyclictest	0	-21	swapper/16	20:05:17	8
3829866	99	171	79,50	cyclictest	0	-21	swapper/24	20:05:17	17
3829866	99	171	79,50	cyclictest	0	-21	swapper/24	20:05:17	17
3829835	99	166	81,7	cyclictest	0	-21	swapper/14	22:39:32	6
3829818	99	165	77,68	cyclictest	0	-21	swapper/9	20:29:01	31
3829871	99	164	70,53	cyclictest	0	-21	swapper/29	20:05:17	22
3829871	99	164	70,53	cyclictest	0	-21	swapper/29	20:05:16	22
3829835	99	163	0,88	cyclictest	0	-21	swapper/14	22:55:15	6
3829835	99	163	0,88	cyclictest	0	-21	swapper/14	22:55:15	6
3829862	99	161	83,10	cyclictest	0	-21	swapper/23	20:05:17	16
3829862	99	161	83,10	cyclictest	0	-21	swapper/23	20:05:17	16
3829793	99	161	83,55	cyclictest	0	-21	swapper/0	00:05:16	0
3829793	99	161	83,55	cyclictest	0	-21	swapper/0	00:05:15	0
3829871	99	160	0,85	cyclictest	0	-21	swapper/29	22:55:16	22
3829871	99	160	0,85	cyclictest	0	-21	swapper/29	22:55:15	22
3829855	99	160	1,93	cyclictest	0	-21	swapper/21	00:11:18	14
3829855	99	160	1,93	cyclictest	0	-21	swapper/21	00:11:17	14
3829851	99	160	156,3	cyclictest	0	-21	swapper/20	23:58:42	13
3829851	99	160	156,3	cyclictest	0	-21	swapper/20	23:58:42	13
3829818	99	160	81,51	cyclictest	0	-21	swapper/9	22:50:17	31
3829809	99	160	62,79	cyclictest	0	-21	swapper/6	22:39:31	28
3829838	99	158	68,48	cyclictest	0	-21	swapper/15	20:05:17	7
3829838	99	158	68,48	cyclictest	0	-21	swapper/15	20:05:16	7
3829862	99	157	83,9	cyclictest	0	-21	swapper/23	22:59:36	16
3829862	99	157	83,9	cyclictest	0	-21	swapper/23	22:59:36	16
3829871	99	156	88,44	cyclictest	0	-21	swapper/29	00:30:19	22
3829871	99	156	88,44	cyclictest	0	-21	swapper/29	00:30:18	22
3829868	99	153	76,2	cyclictest	0	-21	swapper/26	23:55:17	19
3829868	99	153	76,2	cyclictest	0	-21	swapper/26	23:55:17	19
3829816	99	153	78,73	cyclictest	0	-21	swapper/8	22:20:19	30
3829816	99	153	78,73	cyclictest	0	-21	swapper/8	22:20:18	30
3829816	99	153	57,12	cyclictest	0	-21	swapper/8	20:05:17	30
3829816	99	153	57,12	cyclictest	0	-21	swapper/8	20:05:16	30
3829835	99	152	85,43	cyclictest	0	-21	swapper/14	00:30:19	6
3829835	99	152	85,43	cyclictest	0	-21	swapper/14	00:30:19	6
3829796	99	152	148,2	cyclictest	0	-21	swapper/1	21:54:55	1
3829796	99	152	148,2	cyclictest	0	-21	swapper/1	21:54:55	1
3829866	99	151	0,95	cyclictest	0	-21	swapper/24	00:30:19	17
3829866	99	151	0,95	cyclictest	0	-21	swapper/24	00:30:18	17
3829835	99	151	68,10	cyclictest	0	-21	swapper/14	20:05:16	6
3829835	99	151	68,10	cyclictest	0	-21	swapper/14	20:05:16	6
3829798	99	151	149,1	cyclictest	0	-21	swapper/2	22:10:23	12
3829798	99	151	149,1	cyclictest	0	-21	swapper/2	22:10:23	12
3829793	99	150	77,55	cyclictest	0	-21	swapper/0	20:29:02	0
3829807	99	149	85,46	cyclictest	0	-21	swapper/5	21:05:17	27
3829807	99	149	85,46	cyclictest	0	-21	swapper/5	21:05:16	27
3829873	99	148	144,1	cyclictest	0	-21	swapper/31	22:24:03	25
3829873	99	148	144,1	cyclictest	0	-21	swapper/31	22:24:02	25
3829872	99	148	141,5	cyclictest	0	-21	swapper/30	21:45:23	24
3829866	99	148	80,35	cyclictest	0	-21	swapper/24	23:40:16	17
3829844	99	148	84,54	cyclictest	0	-21	swapper/17	22:50:17	9
3829828	99	148	58,65	cyclictest	164714	-21	cat	22:55:16	4
3829828	99	148	58,65	cyclictest	164714	-21	cat	22:55:16	4
3829818	99	148	79,54	cyclictest	0	-21	swapper/9	23:40:18	31
3829809	99	148	66,56	cyclictest	0	-21	swapper/6	00:30:19	28
3829809	99	148	66,56	cyclictest	0	-21	swapper/6	00:30:18	28
3829839	99	147	88,5	cyclictest	0	-21	swapper/16	23:40:16	8
3829816	99	147	74,46	cyclictest	0	-21	swapper/8	22:55:16	30
3829816	99	147	74,46	cyclictest	0	-21	swapper/8	22:55:15	30
3829798	99	147	137,8	cyclictest	0	-21	swapper/2	22:25:06	12
3829873	99	146	140,4	cyclictest	0	-21	swapper/31	23:08:38	25
3829873	99	146	140,4	cyclictest	0	-21	swapper/31	23:08:37	25
3829855	99	146	89,35	cyclictest	0	-21	swapper/21	00:30:19	14
3829855	99	146	89,35	cyclictest	0	-21	swapper/21	00:30:19	14
3829855	99	146	71,4	cyclictest	0	-21	swapper/21	20:05:17	14
3829855	99	146	71,4	cyclictest	0	-21	swapper/21	20:05:16	14
3829835	99	146	70,3	cyclictest	0	-21	swapper/14	23:40:17	6
3829838	99	145	0,87	cyclictest	0	-21	swapper/15	23:05:17	7
3829838	99	145	0,87	cyclictest	0	-21	swapper/15	23:05:16	7
3829873	99	144	138,4	cyclictest	0	-21	swapper/31	22:02:51	25
3829873	99	144	138,4	cyclictest	0	-21	swapper/31	22:02:50	25
3829862	99	144	72,9	cyclictest	0	-21	swapper/23	20:00:15	16
3829862	99	144	72,9	cyclictest	0	-21	swapper/23	20:00:15	16
3829816	99	144	82,51	cyclictest	0	-21	swapper/8	19:55:16	30
3829816	99	144	82,51	cyclictest	0	-21	swapper/8	19:55:16	30
3829804	99	144	141,2	cyclictest	0	-21	swapper/4	23:04:45	26
3829804	99	144	141,2	cyclictest	0	-21	swapper/4	23:04:44	26
3829828	99	143	79,56	cyclictest	0	-21	swapper/12	21:44:19	4
3829816	99	143	71,69	cyclictest	0	-21	swapper/8	19:25:16	30
3829804	99	143	125,17	cyclictest	0	-21	swapper/4	22:05:57	26
3829804	99	143	125,17	cyclictest	0	-21	swapper/4	22:05:57	26
3829873	99	142	132,6	cyclictest	0	-21	swapper/31	23:41:04	25
3829871	99	142	83,39	cyclictest	0	-21	swapper/29	22:39:32	22
3829871	99	142	0,93	cyclictest	2979725	-21	gdbus	22:05:17	22
3829871	99	142	0,93	cyclictest	2979725	-21	gdbus	22:05:17	22
3829849	99	142	56,58	cyclictest	0	-21	swapper/19	22:55:16	11
3829849	99	142	56,58	cyclictest	0	-21	swapper/19	22:55:15	11
3829839	99	142	85,5	cyclictest	0	-21	swapper/16	22:59:36	8
3829839	99	142	85,5	cyclictest	0	-21	swapper/16	22:59:36	8
3829838	99	142	0,90	cyclictest	0	-21	swapper/15	00:11:18	7
3829838	99	142	0,90	cyclictest	0	-21	swapper/15	00:11:17	7
3829825	99	142	71,62	cyclictest	0	-21	swapper/11	22:05:17	3
3829825	99	142	71,62	cyclictest	0	-21	swapper/11	22:05:16	3
3829816	99	142	82,49	cyclictest	226666	-21	kworker/u64:0+efi_rts_wq	22:05:17	30
3829816	99	142	82,49	cyclictest	226666	-21	kworker/u64:0+efi_rts_wq	22:05:17	30
3829804	99	142	138,2	cyclictest	0	-21	swapper/4	21:39:09	26
3829873	99	141	126,6	cyclictest	20	1	rcu_preempt	20:16:01	25
3829873	99	141	126,6	cyclictest	20	1	rcu_preempt	20:16:00	25
3829838	99	141	86,27	cyclictest	0	-21	swapper/15	00:30:19	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2024-02-26 - 15:51