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 Thu Apr 30, 2026 12:46:18)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
22750	99	777	765,7	cyclictest	0	-21	swapper/1	08:30:49	1
22751	99	773	762,5	cyclictest	0	-21	swapper/2	08:30:48	2
22750	99	770	756,9	cyclictest	0	-21	swapper/1	07:25:01	1
22751	99	764	753,5	cyclictest	0	-21	swapper/2	07:25:00	2
22750	99	764	752,7	cyclictest	0	-21	swapper/1	08:52:45	1
22751	99	760	749,6	cyclictest	0	-21	swapper/2	08:52:44	2
22750	99	758	746,7	cyclictest	0	-21	swapper/1	10:53:23	1
22750	99	757	745,7	cyclictest	0	-21	swapper/1	11:37:14	1
22750	99	757	744,7	cyclictest	0	-21	swapper/1	08:41:46	1
22750	99	755	743,7	cyclictest	0	-21	swapper/1	12:32:04	1
22750	99	755	743,7	cyclictest	0	-21	swapper/1	09:47:35	1
22751	99	753	743,5	cyclictest	0	-21	swapper/2	10:53:23	2
22751	99	752	742,5	cyclictest	0	-21	swapper/2	11:37:14	2
22750	99	752	740,7	cyclictest	0	-21	swapper/1	11:59:10	1
22750	99	752	740,7	cyclictest	0	-21	swapper/1	07:57:55	1
22751	99	751	741,5	cyclictest	0	-21	swapper/2	08:41:47	2
22751	99	750	740,5	cyclictest	0	-21	swapper/2	12:32:04	2
22751	99	749	739,5	cyclictest	0	-21	swapper/2	09:47:35	2
22750	99	749	738,5	cyclictest	0	-21	swapper/1	11:15:19	1
22750	99	749	738,5	cyclictest	0	-21	swapper/1	11:15:19	1
22750	99	748	736,7	cyclictest	0	-21	swapper/1	11:26:17	1
22750	99	748	736,7	cyclictest	0	-21	swapper/1	11:26:17	1
22751	99	747	737,5	cyclictest	0	-21	swapper/2	11:59:10	2
22751	99	747	737,5	cyclictest	0	-21	swapper/2	07:57:54	2
22750	99	746	734,7	cyclictest	0	-21	swapper/1	12:10:08	1
22750	99	745	733,7	cyclictest	0	-21	swapper/1	07:14:02	1
22750	99	745	733,7	cyclictest	0	-21	swapper/1	07:14:02	1
22751	99	744	735,4	cyclictest	0	-21	swapper/2	11:15:19	2
22751	99	744	735,4	cyclictest	0	-21	swapper/2	11:15:19	2
22750	99	744	732,7	cyclictest	0	-21	swapper/1	11:04:21	1
22751	99	743	733,5	cyclictest	0	-21	swapper/2	11:26:17	2
22751	99	743	733,5	cyclictest	0	-21	swapper/2	11:26:17	2
22750	99	742	730,7	cyclictest	0	-21	swapper/1	12:21:06	1
22750	99	742	730,7	cyclictest	0	-21	swapper/1	08:08:53	1
22751	99	741	731,5	cyclictest	0	-21	swapper/2	12:10:08	2
22750	99	741	729,7	cyclictest	0	-21	swapper/1	10:09:31	1
22751	99	740	730,5	cyclictest	0	-21	swapper/2	07:14:03	2
22751	99	740	730,5	cyclictest	0	-21	swapper/2	07:14:03	2
22751	99	739	729,5	cyclictest	0	-21	swapper/2	11:04:21	2
22750	99	739	727,7	cyclictest	0	-21	swapper/1	07:35:58	1
22749	99	739	714,19	cyclictest	31332	-21	kworker/0:2+events_freezable_power_	08:30:48	0
22751	99	737	727,5	cyclictest	0	-21	swapper/2	12:21:06	2
22751	99	737	727,5	cyclictest	0	-21	swapper/2	08:08:52	2
22751	99	736	726,5	cyclictest	0	-21	swapper/2	10:09:30	2
22750	99	736	724,7	cyclictest	0	-21	swapper/1	09:14:41	1
22749	99	736	705,26	cyclictest	8233	-21	kworker/0:0+events_freezable_power_	07:25:00	0
22750	99	735	723,7	cyclictest	0	-21	swapper/1	07:46:56	1
22750	99	734	722,7	cyclictest	0	-21	swapper/1	08:19:50	1
22751	99	733	723,5	cyclictest	0	-21	swapper/2	07:35:59	2
22750	99	733	721,7	cyclictest	0	-21	swapper/1	10:31:27	1
22750	99	732	720,7	cyclictest	0	-21	swapper/1	09:03:43	1
22750	99	732	720,7	cyclictest	0	-21	swapper/1	09:03:42	1
22751	99	731	721,5	cyclictest	0	-21	swapper/2	09:14:41	2
22751	99	729	719,5	cyclictest	0	-21	swapper/2	08:19:51	2
22751	99	729	719,5	cyclictest	0	-21	swapper/2	07:46:57	2
22750	99	729	717,7	cyclictest	0	-21	swapper/1	11:48:12	1
22750	99	729	717,7	cyclictest	0	-21	swapper/1	11:48:12	1
22751	99	728	718,5	cyclictest	0	-21	swapper/2	10:31:27	2
22750	99	728	716,7	cyclictest	0	-21	swapper/1	09:36:37	1
22750	99	728	715,7	cyclictest	0	-21	swapper/1	10:42:25	1
22751	99	727	717,5	cyclictest	0	-21	swapper/2	09:03:43	2
22751	99	727	717,5	cyclictest	0	-21	swapper/2	09:03:43	2
22750	99	726	714,7	cyclictest	0	-21	swapper/1	09:58:32	1
22751	99	724	714,5	cyclictest	0	-21	swapper/2	11:48:12	2
22751	99	724	714,5	cyclictest	0	-21	swapper/2	11:48:12	2
22749	99	724	701,18	cyclictest	15810	-21	kworker/0:4+events_freezable_power_	08:52:44	0
22751	99	723	713,5	cyclictest	0	-21	swapper/2	09:36:36	2
22751	99	723	712,5	cyclictest	0	-21	swapper/2	10:42:25	2
22751	99	721	711,5	cyclictest	0	-21	swapper/2	09:58:33	2
22749	99	717	694,17	cyclictest	28073	-21	kworker/0:2+events_freezable_power_	11:37:14	0
22749	99	716	695,16	cyclictest	571	-21	kworker/0:3+events_freezable_power_	10:53:23	0
22749	99	714	693,16	cyclictest	1132	-21	kworker/0:3+events_freezable_power_	08:41:47	0
22749	99	713	692,16	cyclictest	26235	-21	kworker/0:4+events_freezable_power_	12:32:04	0
22749	99	712	691,16	cyclictest	8233	-21	kworker/0:0+events_freezable_power_	09:47:35	0
22749	99	710	689,16	cyclictest	8233	-21	kworker/0:0+events_freezable_power_	07:57:54	0
22749	99	710	689,16	cyclictest	26235	-21	kworker/0:4+events_freezable_power_	11:59:10	0
22750	99	708	698,5	cyclictest	0	-21	swapper/1	10:20:29	1
22750	99	708	698,5	cyclictest	0	-21	swapper/1	09:25:38	1
22749	99	706	687,13	cyclictest	28073	-21	kworker/0:2+events_freezable_power_	11:15:19	0
22749	99	706	687,13	cyclictest	28073	-21	kworker/0:2+events_freezable_power_	11:15:19	0
22749	99	706	685,16	cyclictest	571	-21	kworker/0:3+events_freezable_power_	11:26:17	0
22749	99	706	685,16	cyclictest	571	-21	kworker/0:3+events_freezable_power_	11:26:17	0
22749	99	706	683,18	cyclictest	26703	-21	kworker/0:5+events_freezable_power_	12:10:08	0
22751	99	703	695,3	cyclictest	0	-21	swapper/2	09:25:39	2
22751	99	702	694,3	cyclictest	0	-21	swapper/2	10:20:29	2
22749	99	702	682,16	cyclictest	31332	-21	kworker/0:2+events_freezable_power_	07:14:03	0
22749	99	702	682,16	cyclictest	31332	-21	kworker/0:2+events_freezable_power_	07:14:02	0
22749	99	702	681,16	cyclictest	26703	-21	kworker/0:5+events_freezable_power_	11:04:21	0
22749	99	700	679,16	cyclictest	26703	-21	kworker/0:5+events_freezable_power_	12:21:07	0
22749	99	700	679,16	cyclictest	21451	-21	kworker/0:1+events_freezable_power_	08:08:52	0
22749	99	700	672,23	cyclictest	31332	-21	kworker/0:2+events_freezable_power_	07:46:57	0
22749	99	699	678,16	cyclictest	618	-21	kworker/0:6+events_freezable_power_	10:09:31	0
22749	99	696	675,16	cyclictest	1120	-21	kworker/0:6+events_freezable_power_	07:35:58	0
22749	99	694	673,16	cyclictest	15810	-21	kworker/0:4+events_freezable_power_	09:14:41	0
22749	99	692	671,17	cyclictest	15810	-21	kworker/0:4+events_freezable_power_	08:19:51	0
22749	99	692	670,17	cyclictest	26703	-21	kworker/0:5+events_freezable_power_	10:31:27	0
22749	99	690	669,16	cyclictest	8233	-21	kworker/0:0+events_freezable_power_	09:03:43	0
22749	99	690	669,16	cyclictest	8233	-21	kworker/0:0+events_freezable_power_	09:03:42	0
22749	99	688	665,18	cyclictest	26703	-21	kworker/0:5+events_freezable_power_	09:36:36	0
22749	99	687	666,16	cyclictest	571	-21	kworker/0:3+events_freezable_power_	11:48:12	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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