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 Sat Apr 25, 2026 00:46:36)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
561	99	919	907,7	cyclictest	0	-21	swapper/1	19:48:49	1
561	99	919	907,7	cyclictest	0	-21	swapper/1	19:48:49	1
563	99	910	900,5	cyclictest	0	-21	swapper/3	19:48:49	3
563	99	910	900,5	cyclictest	0	-21	swapper/3	19:48:49	3
560	99	877	855,17	cyclictest	9531	-21	kworker/0:5+events_freezable_power_	19:48:48	0
560	99	877	855,17	cyclictest	9531	-21	kworker/0:5+events_freezable_power_	19:48:48	0
562	99	732	717,8	cyclictest	0	-21	swapper/2	19:48:48	2
562	99	732	717,8	cyclictest	0	-21	swapper/2	19:48:48	2
561	99	722	710,7	cyclictest	0	-21	swapper/1	21:05:34	1
561	99	719	709,5	cyclictest	0	-21	swapper/1	20:10:45	1
561	99	716	704,7	cyclictest	0	-21	swapper/1	19:26:52	1
561	99	715	705,5	cyclictest	0	-21	swapper/1	22:00:24	1
561	99	715	702,7	cyclictest	0	-21	swapper/1	22:11:23	1
561	99	714	700,9	cyclictest	0	-21	swapper/1	19:15:55	1
561	99	713	701,7	cyclictest	0	-21	swapper/1	22:33:19	1
561	99	713	701,7	cyclictest	0	-21	swapper/1	22:33:19	1
561	99	713	701,7	cyclictest	0	-21	swapper/1	19:37:50	1
561	99	713	701,7	cyclictest	0	-21	swapper/1	00:12:00	1
563	99	712	702,5	cyclictest	0	-21	swapper/3	21:05:34	3
561	99	712	700,7	cyclictest	0	-21	swapper/1	22:44:17	1
561	99	712	700,7	cyclictest	0	-21	swapper/1	22:44:16	1
561	99	711	699,7	cyclictest	0	-21	swapper/1	00:01:03	1
563	99	710	702,4	cyclictest	0	-21	swapper/3	20:10:45	3
561	99	709	697,7	cyclictest	0	-21	swapper/1	21:38:28	1
563	99	707	697,5	cyclictest	0	-21	swapper/3	19:26:52	3
561	99	707	695,7	cyclictest	0	-21	swapper/1	19:59:46	1
561	99	707	695,7	cyclictest	0	-21	swapper/1	19:59:46	1
563	99	706	698,4	cyclictest	0	-21	swapper/3	22:00:25	3
563	99	705	695,5	cyclictest	0	-21	swapper/3	22:11:23	3
561	99	705	693,7	cyclictest	0	-21	swapper/1	23:50:05	1
561	99	705	693,7	cyclictest	0	-21	swapper/1	20:43:38	1
563	99	704	694,5	cyclictest	0	-21	swapper/3	22:33:19	3
563	99	704	694,5	cyclictest	0	-21	swapper/3	22:33:19	3
563	99	704	694,5	cyclictest	0	-21	swapper/3	19:37:50	3
563	99	704	694,5	cyclictest	0	-21	swapper/3	00:12:00	3
563	99	703	693,5	cyclictest	0	-21	swapper/3	22:44:16	3
563	99	703	693,5	cyclictest	0	-21	swapper/3	22:44:16	3
563	99	702	692,6	cyclictest	0	-21	swapper/3	19:15:55	3
563	99	702	692,5	cyclictest	0	-21	swapper/3	00:01:03	3
563	99	700	690,5	cyclictest	0	-21	swapper/3	21:38:29	3
561	99	700	688,7	cyclictest	0	-21	swapper/1	21:16:33	1
561	99	699	687,7	cyclictest	0	-21	swapper/1	23:17:10	1
561	99	699	687,7	cyclictest	0	-21	swapper/1	20:54:37	1
561	99	699	687,7	cyclictest	0	-21	swapper/1	20:32:41	1
563	99	698	688,5	cyclictest	0	-21	swapper/3	19:59:46	3
563	99	698	688,5	cyclictest	0	-21	swapper/3	19:59:46	3
561	99	698	686,7	cyclictest	0	-21	swapper/1	00:33:56	1
561	99	696	684,7	cyclictest	0	-21	swapper/1	23:28:09	1
563	99	695	686,5	cyclictest	0	-21	swapper/3	23:50:05	3
563	99	695	685,5	cyclictest	0	-21	swapper/3	20:43:38	3
561	99	694	682,7	cyclictest	0	-21	swapper/1	21:49:27	1
561	99	693	681,7	cyclictest	0	-21	swapper/1	22:22:21	1
561	99	691	679,7	cyclictest	0	-21	swapper/1	20:21:42	1
561	99	691	679,7	cyclictest	0	-21	swapper/1	20:21:42	1
563	99	690	680,5	cyclictest	0	-21	swapper/3	21:16:33	3
563	99	690	680,5	cyclictest	0	-21	swapper/3	20:54:37	3
563	99	689	679,5	cyclictest	0	-21	swapper/3	23:17:11	3
563	99	689	679,5	cyclictest	0	-21	swapper/3	20:32:41	3
563	99	689	679,5	cyclictest	0	-21	swapper/3	00:33:56	3
561	99	689	677,7	cyclictest	0	-21	swapper/1	23:06:13	1
561	99	688	675,7	cyclictest	0	-21	swapper/1	21:27:30	1
563	99	687	677,5	cyclictest	0	-21	swapper/3	23:28:09	3
561	99	686	673,7	cyclictest	0	-21	swapper/1	00:22:58	1
560	99	685	658,22	cyclictest	15130	-21	kworker/0:4+events_freezable_power_	21:05:35	0
563	99	684	674,5	cyclictest	0	-21	swapper/3	22:22:21	3
563	99	684	674,5	cyclictest	0	-21	swapper/3	21:49:27	3
561	99	684	672,7	cyclictest	0	-21	swapper/1	23:39:07	1
561	99	684	672,7	cyclictest	0	-21	swapper/1	23:39:07	1
563	99	682	672,5	cyclictest	0	-21	swapper/3	20:21:42	3
563	99	682	672,5	cyclictest	0	-21	swapper/3	20:21:42	3
563	99	680	670,5	cyclictest	0	-21	swapper/3	23:06:13	3
560	99	679	647,27	cyclictest	18313	-21	kworker/0:0+events_freezable_power_	19:15:54	0
563	99	678	668,5	cyclictest	0	-21	swapper/3	21:27:30	3
560	99	678	657,15	cyclictest	15130	-21	kworker/0:4+events_freezable_power_	20:10:44	0
563	99	676	666,5	cyclictest	0	-21	swapper/3	00:22:58	3
560	99	676	652,19	cyclictest	9823	-21	kworker/0:1+events_freezable_power_	19:26:52	0
563	99	675	665,5	cyclictest	0	-21	swapper/3	23:39:07	3
563	99	675	665,5	cyclictest	0	-21	swapper/3	23:39:07	3
560	99	674	653,15	cyclictest	7649	-21	kworker/0:5+events_freezable_power_	22:00:25	0
560	99	672	650,17	cyclictest	9823	-21	kworker/0:1+events_freezable_power_	22:11:22	0
561	99	671	661,5	cyclictest	0	-21	swapper/1	22:55:14	1
560	99	671	649,17	cyclictest	18313	-21	kworker/0:0+events_freezable_power_	19:37:51	0
560	99	671	649,17	cyclictest	10798	-21	kworker/0:0+events_freezable_power_	22:33:19	0
560	99	671	649,17	cyclictest	10798	-21	kworker/0:0+events_freezable_power_	22:33:19	0
560	99	670	649,16	cyclictest	28855	-21	kworker/0:1+events_freezable_power_	00:12:00	0
560	99	670	648,17	cyclictest	10798	-21	kworker/0:0+events_freezable_power_	22:44:17	0
560	99	670	648,17	cyclictest	10798	-21	kworker/0:0+events_freezable_power_	22:44:17	0
560	99	668	647,16	cyclictest	28855	-21	kworker/0:1+events_freezable_power_	00:01:03	0
560	99	667	645,17	cyclictest	9823	-21	kworker/0:1+events_freezable_power_	21:38:29	0
560	99	665	643,17	cyclictest	9531	-21	kworker/0:5+events_freezable_power_	19:59:47	0
560	99	665	643,17	cyclictest	9531	-21	kworker/0:5+events_freezable_power_	19:59:46	0
560	99	664	635,24	cyclictest	9823	-21	kworker/0:1+events_freezable_power_	21:16:32	0
560	99	663	641,17	cyclictest	30875	-21	kworker/0:0+events_freezable_power_	23:50:05	0
560	99	662	640,17	cyclictest	5007	-21	kworker/0:2+events_freezable_power_	20:43:39	0
563	99	661	653,4	cyclictest	0	-21	swapper/3	22:55:15	3
560	99	656	635,16	cyclictest	10989	-21	kworker/0:0+events_freezable_power_	20:54:36	0
560	99	656	634,17	cyclictest	7100	-21	kworker/0:4+events_freezable_power_	00:33:56	0
560	99	656	634,17	cyclictest	28855	-21	kworker/0:1+events_freezable_power_	23:17:11	0
560	99	656	634,17	cyclictest	10989	-21	kworker/0:0+events_freezable_power_	20:32:40	0
560	99	654	632,17	cyclictest	30875	-21	kworker/0:0+events_freezable_power_	23:28:09	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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