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 Wed Jul 08, 2026 12:46:32)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
27052	99	924	912,7	cyclictest	0	-21	swapper/3	07:47:23	3
27050	99	920	910,5	cyclictest	0	-21	swapper/1	07:47:23	1
27049	99	880	856,19	cyclictest	30385	-21	kworker/0:0+events_freezable_power_	07:47:23	0
27049	99	760	720,35	cyclictest	29517	-21	kworker/0:2+events_freezable_power_	07:58:21	0
27049	99	757	717,34	cyclictest	28484	-21	kworker/0:1+events_freezable_power_	09:48:01	0
27052	99	748	734,9	cyclictest	0	-21	swapper/3	12:10:35	3
27050	99	744	733,5	cyclictest	0	-21	swapper/1	12:10:34	1
27052	99	740	728,7	cyclictest	0	-21	swapper/3	09:37:03	3
27051	99	738	723,8	cyclictest	0	-21	swapper/2	07:47:23	2
27050	99	736	726,5	cyclictest	0	-21	swapper/1	09:37:03	1
27052	99	729	717,7	cyclictest	0	-21	swapper/3	10:31:52	3
27052	99	729	717,7	cyclictest	0	-21	swapper/3	10:31:52	3
27052	99	726	714,7	cyclictest	0	-21	swapper/3	08:31:15	3
27050	99	726	716,5	cyclictest	0	-21	swapper/1	10:31:53	1
27050	99	726	716,5	cyclictest	0	-21	swapper/1	10:31:52	1
27052	99	725	713,7	cyclictest	0	-21	swapper/3	07:25:27	3
27052	99	725	713,7	cyclictest	0	-21	swapper/3	07:25:27	3
27052	99	723	711,7	cyclictest	0	-21	swapper/3	08:42:13	3
27050	99	723	713,5	cyclictest	0	-21	swapper/1	08:31:15	1
27050	99	722	712,5	cyclictest	0	-21	swapper/1	07:25:27	1
27050	99	722	712,5	cyclictest	0	-21	swapper/1	07:25:27	1
27052	99	721	710,7	cyclictest	0	-21	swapper/3	10:20:54	3
27052	99	721	709,7	cyclictest	0	-21	swapper/3	11:26:42	3
27050	99	720	710,5	cyclictest	0	-21	swapper/1	08:42:13	1
27050	99	719	709,5	cyclictest	0	-21	swapper/1	10:20:54	1
27052	99	718	706,7	cyclictest	0	-21	swapper/3	11:48:38	3
27052	99	718	706,7	cyclictest	0	-21	swapper/3	11:48:38	3
27052	99	717	706,7	cyclictest	0	-21	swapper/3	09:04:09	3
27052	99	717	706,7	cyclictest	0	-21	swapper/3	08:09:19	3
27050	99	717	707,5	cyclictest	0	-21	swapper/1	11:26:42	1
27052	99	716	705,7	cyclictest	0	-21	swapper/3	09:26:05	3
27052	99	716	704,7	cyclictest	0	-21	swapper/3	10:53:48	3
27052	99	716	704,7	cyclictest	0	-21	swapper/3	10:53:48	3
27050	99	715	705,5	cyclictest	0	-21	swapper/1	11:48:39	1
27050	99	715	705,5	cyclictest	0	-21	swapper/1	11:48:39	1
27050	99	715	705,5	cyclictest	0	-21	swapper/1	08:09:19	1
27050	99	714	704,5	cyclictest	0	-21	swapper/1	09:26:05	1
27050	99	714	704,5	cyclictest	0	-21	swapper/1	09:04:09	1
27052	99	713	701,7	cyclictest	0	-21	swapper/3	10:09:56	3
27052	99	713	701,7	cyclictest	0	-21	swapper/3	10:09:56	3
27052	99	713	701,7	cyclictest	0	-21	swapper/3	07:14:28	3
27052	99	712	700,7	cyclictest	0	-21	swapper/3	09:58:59	3
27050	99	712	702,5	cyclictest	0	-21	swapper/1	10:53:49	1
27050	99	712	702,5	cyclictest	0	-21	swapper/1	10:53:48	1
27052	99	710	698,7	cyclictest	0	-21	swapper/3	11:04:46	3
27050	99	710	700,5	cyclictest	0	-21	swapper/1	10:09:56	1
27050	99	710	700,5	cyclictest	0	-21	swapper/1	10:09:56	1
27050	99	710	700,5	cyclictest	0	-21	swapper/1	07:14:28	1
27049	99	710	679,26	cyclictest	24015	-21	kworker/0:1+events_freezable_power_	12:10:34	0
27052	99	709	697,7	cyclictest	0	-21	swapper/3	10:42:50	3
27052	99	709	697,7	cyclictest	0	-21	swapper/3	10:42:50	3
27052	99	709	697,7	cyclictest	0	-21	swapper/3	07:36:24	3
27050	99	708	698,5	cyclictest	0	-21	swapper/1	09:58:59	1
27052	99	707	695,7	cyclictest	0	-21	swapper/3	12:32:31	3
27052	99	707	695,7	cyclictest	0	-21	swapper/3	12:32:30	3
27050	99	707	697,5	cyclictest	0	-21	swapper/1	11:04:46	1
27050	99	706	696,5	cyclictest	0	-21	swapper/1	10:42:50	1
27050	99	706	696,5	cyclictest	0	-21	swapper/1	10:42:50	1
27050	99	706	696,5	cyclictest	0	-21	swapper/1	07:36:24	1
27052	99	705	693,7	cyclictest	0	-21	swapper/3	09:15:06	3
27052	99	705	693,7	cyclictest	0	-21	swapper/3	08:53:11	3
27052	99	705	693,7	cyclictest	0	-21	swapper/3	08:53:11	3
27052	99	703	691,7	cyclictest	0	-21	swapper/3	11:59:36	3
27050	99	703	693,5	cyclictest	0	-21	swapper/1	12:32:30	1
27050	99	703	693,5	cyclictest	0	-21	swapper/1	12:32:30	1
27052	99	702	693,5	cyclictest	0	-21	swapper/3	08:20:17	3
27052	99	702	690,7	cyclictest	0	-21	swapper/3	12:21:32	3
27050	99	702	692,5	cyclictest	0	-21	swapper/1	09:15:07	1
27050	99	702	692,5	cyclictest	0	-21	swapper/1	08:53:11	1
27050	99	702	692,5	cyclictest	0	-21	swapper/1	08:53:10	1
27049	99	702	672,24	cyclictest	9948	-21	kworker/0:5+events_freezable_power_	09:37:03	0
27052	99	701	689,7	cyclictest	0	-21	swapper/3	11:37:41	3
27050	99	701	691,5	cyclictest	0	-21	swapper/1	08:20:17	1
27050	99	699	689,5	cyclictest	0	-21	swapper/1	12:21:32	1
27050	99	699	689,5	cyclictest	0	-21	swapper/1	11:59:36	1
27050	99	698	688,5	cyclictest	0	-21	swapper/1	11:37:40	1
27052	99	692	681,7	cyclictest	0	-21	swapper/3	11:15:44	3
27050	99	689	679,5	cyclictest	0	-21	swapper/1	11:15:44	1
27049	99	683	662,16	cyclictest	4833	-21	kworker/0:4+events_freezable_power_	10:31:52	0
27049	99	683	662,16	cyclictest	4833	-21	kworker/0:4+events_freezable_power_	10:31:52	0
27049	99	681	659,17	cyclictest	32047	-21	kworker/0:3+events_freezable_power_	08:31:15	0
27049	99	680	658,17	cyclictest	26069	-21	kworker/0:5+events_freezable_power_	07:25:26	0
27049	99	680	658,17	cyclictest	26069	-21	kworker/0:5+events_freezable_power_	07:25:26	0
27049	99	678	656,17	cyclictest	9948	-21	kworker/0:5+events_freezable_power_	08:42:13	0
27049	99	677	655,17	cyclictest	9948	-21	kworker/0:5+events_freezable_power_	10:20:54	0
27049	99	675	654,16	cyclictest	14137	-21	kworker/0:3+events_freezable_power_	11:26:43	0
27049	99	673	651,17	cyclictest	29517	-21	kworker/0:2+events_freezable_power_	09:04:09	0
27049	99	673	651,17	cyclictest	27621	-21	kworker/0:1+events_freezable_power_	08:09:19	0
27049	99	672	651,16	cyclictest	24015	-21	kworker/0:1+events_freezable_power_	11:48:39	0
27049	99	672	651,16	cyclictest	24015	-21	kworker/0:1+events_freezable_power_	11:48:38	0
27049	99	672	650,17	cyclictest	4833	-21	kworker/0:4+events_freezable_power_	09:26:05	0
27049	99	671	649,17	cyclictest	29517	-21	kworker/0:2+events_freezable_power_	10:53:48	0
27049	99	671	649,17	cyclictest	29517	-21	kworker/0:2+events_freezable_power_	10:53:48	0
27049	99	668	646,17	cyclictest	28484	-21	kworker/0:1+events_freezable_power_	10:09:56	0
27049	99	668	646,17	cyclictest	28484	-21	kworker/0:1+events_freezable_power_	10:09:56	0
27049	99	668	646,17	cyclictest	26069	-21	kworker/0:5+events_freezable_power_	07:14:29	0
27049	99	668	643,20	cyclictest	17981	-21	kworker/0:4+events_freezable_power_	11:04:46	0
27049	99	665	644,16	cyclictest	32553	-21	kworker/0:0+events_freezable_power_	09:58:59	0
27049	99	664	642,17	cyclictest	30385	-21	kworker/0:0+events_freezable_power_	07:36:25	0
27049	99	664	642,17	cyclictest	28484	-21	kworker/0:1+events_freezable_power_	10:42:50	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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