OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #f, slot #5

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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: reduced

Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackfslot5.osadl.org (updated Mon Jun 01, 2026 00:46:28)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
16000	99	958	946,7	cyclictest	0	-21	swapper/1	20:51:52	1
16002	99	950	940,5	cyclictest	0	-21	swapper/3	20:51:52	3
15999	99	915	892,18	cyclictest	25166	-21	kworker/0:0+events_freezable_power_	20:51:52	0
16001	99	862	852,5	cyclictest	0	-21	swapper/2	20:51:52	2
16000	99	771	759,7	cyclictest	0	-21	swapper/1	23:36:22	1
16000	99	770	758,7	cyclictest	0	-21	swapper/1	20:18:58	1
16000	99	769	757,7	cyclictest	0	-21	swapper/1	23:47:21	1
16000	99	769	757,7	cyclictest	0	-21	swapper/1	23:47:20	1
16000	99	768	756,7	cyclictest	0	-21	swapper/1	23:58:19	1
16000	99	768	756,7	cyclictest	0	-21	swapper/1	21:02:50	1
16000	99	768	756,7	cyclictest	0	-21	swapper/1	21:02:50	1
16000	99	767	755,7	cyclictest	0	-21	swapper/1	21:24:46	1
16000	99	767	755,7	cyclictest	0	-21	swapper/1	19:35:07	1
16000	99	765	753,7	cyclictest	0	-21	swapper/1	22:52:30	1
16002	99	764	754,5	cyclictest	0	-21	swapper/3	23:36:23	3
16002	99	762	752,5	cyclictest	0	-21	swapper/3	23:47:21	3
16002	99	762	752,5	cyclictest	0	-21	swapper/3	23:47:20	3
16002	99	762	752,5	cyclictest	0	-21	swapper/3	20:18:59	3
15999	99	762	716,39	cyclictest	382	-21	kworker/0:0+events_freezable_power_	23:25:24	0
16002	99	761	751,5	cyclictest	0	-21	swapper/3	21:02:50	3
16002	99	761	751,5	cyclictest	0	-21	swapper/3	21:02:50	3
16002	99	760	750,5	cyclictest	0	-21	swapper/3	23:58:18	3
16002	99	759	749,5	cyclictest	0	-21	swapper/3	21:24:46	3
16002	99	759	749,5	cyclictest	0	-21	swapper/3	19:35:07	3
16000	99	759	747,7	cyclictest	0	-21	swapper/1	23:14:26	1
16000	99	759	747,7	cyclictest	0	-21	swapper/1	23:14:26	1
16000	99	759	747,7	cyclictest	0	-21	swapper/1	22:08:38	1
16000	99	759	747,7	cyclictest	0	-21	swapper/1	00:31:13	1
16002	99	758	748,5	cyclictest	0	-21	swapper/3	22:52:30	3
16000	99	757	745,7	cyclictest	0	-21	swapper/1	23:03:28	1
16000	99	757	745,7	cyclictest	0	-21	swapper/1	19:13:11	1
16000	99	756	744,7	cyclictest	0	-21	swapper/1	21:13:48	1
16000	99	756	744,7	cyclictest	0	-21	swapper/1	21:13:48	1
16000	99	756	744,7	cyclictest	0	-21	swapper/1	19:57:03	1
16000	99	756	744,7	cyclictest	0	-21	swapper/1	19:57:03	1
16000	99	755	743,7	cyclictest	0	-21	swapper/1	21:57:41	1
16000	99	754	742,7	cyclictest	0	-21	swapper/1	00:09:16	1
16002	99	752	742,5	cyclictest	0	-21	swapper/3	23:14:27	3
16002	99	752	742,5	cyclictest	0	-21	swapper/3	23:14:27	3
16002	99	752	742,5	cyclictest	0	-21	swapper/3	00:31:13	3
16000	99	752	740,7	cyclictest	0	-21	swapper/1	20:08:01	1
16000	99	752	740,7	cyclictest	0	-21	swapper/1	20:08:01	1
16000	99	752	740,7	cyclictest	0	-21	swapper/1	19:46:05	1
16002	99	751	741,5	cyclictest	0	-21	swapper/3	22:08:38	3
16002	99	750	740,5	cyclictest	0	-21	swapper/3	23:03:28	3
16002	99	749	739,5	cyclictest	0	-21	swapper/3	19:57:03	3
16002	99	749	739,5	cyclictest	0	-21	swapper/3	19:57:02	3
16002	99	749	739,5	cyclictest	0	-21	swapper/3	19:13:11	3
16002	99	748	738,5	cyclictest	0	-21	swapper/3	21:57:41	3
16002	99	748	738,5	cyclictest	0	-21	swapper/3	21:13:48	3
16002	99	748	738,5	cyclictest	0	-21	swapper/3	21:13:48	3
16002	99	747	737,5	cyclictest	0	-21	swapper/3	00:09:17	3
16000	99	747	735,7	cyclictest	0	-21	swapper/1	20:29:57	1
16002	99	744	734,5	cyclictest	0	-21	swapper/3	20:08:01	3
16002	99	744	734,5	cyclictest	0	-21	swapper/3	20:08:01	3
16002	99	744	734,5	cyclictest	0	-21	swapper/3	19:46:05	3
16000	99	742	730,7	cyclictest	0	-21	swapper/1	21:46:42	1
16000	99	740	727,7	cyclictest	0	-21	swapper/1	22:19:36	1
16002	99	739	729,5	cyclictest	0	-21	swapper/3	20:29:57	3
16000	99	738	726,7	cyclictest	0	-21	swapper/1	22:41:32	1
16002	99	734	724,5	cyclictest	0	-21	swapper/3	21:46:42	3
16002	99	732	722,5	cyclictest	0	-21	swapper/3	22:19:37	3
16002	99	729	720,5	cyclictest	0	-21	swapper/3	22:41:33	3
15999	99	728	704,19	cyclictest	21125	-21	kworker/0:5+events_freezable_power_	20:18:59	0
15999	99	727	706,16	cyclictest	6548	-21	kworker/0:2+events_freezable_power_	23:36:22	0
15999	99	724	703,16	cyclictest	15307	-21	kworker/0:4+events_freezable_power_	23:47:20	0
15999	99	724	703,16	cyclictest	15307	-21	kworker/0:4+events_freezable_power_	23:47:20	0
15999	99	724	702,17	cyclictest	17455	-21	kworker/0:1+events_freezable_power_	23:58:19	0
15999	99	723	702,16	cyclictest	17455	-21	kworker/0:1+events_freezable_power_	21:02:50	0
15999	99	723	702,16	cyclictest	17455	-21	kworker/0:1+events_freezable_power_	21:02:50	0
15999	99	723	701,17	cyclictest	25166	-21	kworker/0:0+events_freezable_power_	19:35:07	0
15999	99	722	701,16	cyclictest	3069	-21	kworker/0:4+events_freezable_power_	21:24:46	0
15999	99	720	699,16	cyclictest	21125	-21	kworker/0:5+events_freezable_power_	22:52:30	0
15999	99	716	694,17	cyclictest	31321	-21	kworker/0:3+events_freezable_power_	00:31:13	0
15999	99	715	693,17	cyclictest	3069	-21	kworker/0:4+events_freezable_power_	22:08:38	0
15999	99	715	693,17	cyclictest	21125	-21	kworker/0:5+events_freezable_power_	23:14:26	0
15999	99	715	693,17	cyclictest	21125	-21	kworker/0:5+events_freezable_power_	23:14:26	0
15999	99	712	691,16	cyclictest	18151	-21	kworker/0:3+events_freezable_power_	23:03:29	0
15999	99	712	691,16	cyclictest	17455	-21	kworker/0:1+events_freezable_power_	19:13:10	0
15999	99	712	690,17	cyclictest	25593	-21	kworker/0:2+events_freezable_power_	19:57:03	0
15999	99	712	690,17	cyclictest	25593	-21	kworker/0:2+events_freezable_power_	19:57:03	0
15999	99	712	690,17	cyclictest	21125	-21	kworker/0:5+events_freezable_power_	21:13:48	0
15999	99	712	690,17	cyclictest	21125	-21	kworker/0:5+events_freezable_power_	21:13:48	0
15999	99	712	689,18	cyclictest	6548	-21	kworker/0:2+events_freezable_power_	00:09:16	0
15999	99	710	689,16	cyclictest	21125	-21	kworker/0:5+events_freezable_power_	21:57:40	0
15999	99	708	686,17	cyclictest	25166	-21	kworker/0:0+events_freezable_power_	20:08:01	0
15999	99	708	686,17	cyclictest	25166	-21	kworker/0:0+events_freezable_power_	20:08:00	0
15999	99	708	686,17	cyclictest	14227	-21	kworker/0:3+events_freezable_power_	19:46:05	0
15999	99	703	681,17	cyclictest	17455	-21	kworker/0:1+events_freezable_power_	20:29:57	0
15999	99	700	676,19	cyclictest	3069	-21	kworker/0:4+events_freezable_power_	21:46:43	0
16000	99	698	688,5	cyclictest	0	-21	swapper/1	22:30:34	1
15999	99	694	673,16	cyclictest	3069	-21	kworker/0:4+events_freezable_power_	22:19:36	0
15999	99	693	672,16	cyclictest	3069	-21	kworker/0:4+events_freezable_power_	22:41:32	0
16002	99	690	683,3	cyclictest	0	-21	swapper/3	22:30:34	3
16000	99	690	680,5	cyclictest	0	-21	swapper/1	21:35:44	1
16001	99	689	676,8	cyclictest	0	-21	swapper/2	23:25:25	2
16000	99	685	675,5	cyclictest	0	-21	swapper/1	20:40:55	1
16000	99	685	675,5	cyclictest	0	-21	swapper/1	00:20:14	1
16000	99	684	674,5	cyclictest	0	-21	swapper/1	19:24:09	1
16002	99	682	675,3	cyclictest	0	-21	swapper/3	21:35:44	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2025-04-16 - 17:23