OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #4, slot #1

Click here to display the system's profile data or here to proceed to next system.

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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack4slot1.osadl.org (updated Fri Dec 12, 2025 06:46:29)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
8763	2	140	0,4	sleep0	8731	-21	execl	05:50:45	0
8763	2	140	0,4	sleep0	8731	-21	execl	05:50:45	0
20123	2	133	0,2	sleep1	20131	-21	od	06:11:33	1
20123	2	133	0,2	sleep1	20131	-21	od	06:11:33	1
28045	2	131	0,2	sleep0	0	-21	swapper/0	06:08:38	0
28045	2	131	0,2	sleep0	0	-21	swapper/0	06:08:38	0
28045	2	131	0,2	sleep0	0	-21	swapper/0	06:08:38	0
12975	2	131	0,4	sleep3	33	-21	ksoftirqd/3	06:00:58	3
12975	2	131	0,4	sleep3	33	-21	ksoftirqd/3	06:00:58	3
12975	2	131	0,4	sleep3	33	-21	ksoftirqd/3	06:00:58	3
15191	2	128	0,3	sleep3	0	-21	swapper/3	06:09:26	3
15191	2	128	0,3	sleep3	0	-21	swapper/3	06:09:26	3
15191	2	128	0,3	sleep3	0	-21	swapper/3	06:09:26	3
20589	2	127	0,3	sleep2	0	-21	swapper/2	05:29:25	2
20589	2	127	0,3	sleep2	0	-21	swapper/2	05:29:25	2
20589	2	127	0,3	sleep2	0	-21	swapper/2	05:29:25	2
13355	2	125	0,3	sleep3	0	-21	swapper/3	06:03:16	3
13355	2	125	0,3	sleep3	0	-21	swapper/3	06:03:16	3
18614	2	123	0,3	sleep2	0	-21	swapper/2	05:23:59	2
15977	2	121	0,6	sleep1	15986	-21	rm	06:11:20	1
15977	2	121	0,6	sleep1	15986	-21	rm	06:11:20	1
10350	2	121	0,2	sleep3	0	-21	swapper/3	05:52:01	3
10350	2	121	0,2	sleep3	0	-21	swapper/3	05:52:01	3
18591	2	120	0,3	sleep3	0	-21	swapper/3	05:23:48	3
18048	2	120	0,2	sleep2	18023	-21	sh	06:09:33	2
18048	2	120	0,2	sleep2	18023	-21	sh	06:09:33	2
18048	2	120	0,2	sleep2	18023	-21	sh	06:09:33	2
14597	2	118	0,2	chrt	14600	-21	sh	05:41:08	2
14597	2	118	0,2	chrt	14600	-21	sh	05:41:08	2
14597	2	118	0,2	chrt	14600	-21	sh	05:41:08	2
8630	2	115	0,2	sleep3	0	-21	swapper/3	05:49:36	3
8630	2	115	0,2	sleep3	0	-21	swapper/3	05:49:36	3
22311	2	114	0,4	sleep2	0	-21	swapper/2	05:31:51	2
18547	2	113	0,2	sleep0	0	-21	swapper/0	05:23:16	0
2805	2	111	0,5	sleep1	2810	-21	sh	06:08:55	1
16210	2	108	0,5	chrt	0	-21	swapper/3	05:41:13	3
16210	2	108	0,5	chrt	0	-21	swapper/3	05:41:13	3
16210	2	108	0,5	chrt	0	-21	swapper/3	05:41:13	3
17991	2	105	0,3	sleep3	0	-21	swapper/3	06:11:26	3
17991	2	105	0,3	sleep3	0	-21	swapper/3	06:11:26	3
10531	2	105	0,2	chrt	10511	-21	fstime	05:53:36	1
10531	2	105	0,2	chrt	10511	-21	fstime	05:53:36	1
10173	2	104	0,7	sleep0	10175	-21	sort	05:42:34	0
10173	2	104	0,7	sleep0	10175	-21	sort	05:42:34	0
29540	2	103	0,2	sleep3	0	-21	swapper/3	05:43:32	3
29540	2	103	0,2	sleep3	0	-21	swapper/3	05:43:32	3
10958	2	103	0,2	sleep2	10950	-21	expr	05:42:36	2
10958	2	103	0,2	sleep2	10950	-21	expr	05:42:36	2
27843	2	102	0,10	sleep1	27854	-21	multi.sh	05:41:49	1
27843	2	102	0,10	sleep1	27854	-21	multi.sh	05:41:49	1
19647	2	99	0,3	sleep3	0	-21	swapper/3	05:26:13	3
19647	2	99	0,3	sleep3	0	-21	swapper/3	05:26:13	3
19647	2	99	0,3	sleep3	0	-21	swapper/3	05:26:13	3
8764	2	97	0,4	sleep1	8733	-21	execl	05:50:46	1
8764	2	97	0,4	sleep1	8733	-21	execl	05:50:46	1
12887	2	90	0,7	chrt	12878	-21	context1	06:00:33	2
12887	2	90	0,7	chrt	12878	-21	context1	06:00:33	2
12887	2	90	0,7	chrt	12878	-21	context1	06:00:33	2
24223	2	85	0,4	sleep0	24262	-21	rm	06:11:50	0
24223	2	85	0,4	sleep0	24262	-21	rm	06:11:50	0
1919	2	82	0,2	sleep2	2240	-21	expr	06:12:25	2
1919	2	82	0,2	sleep2	2240	-21	expr	06:12:25	2
10377	2	78	0,3	sleep2	0	-21	swapper/2	06:16:16	2
10377	2	78	0,3	sleep2	0	-21	swapper/2	06:16:16	2
7197	2	77	0,3	chrt	0	-21	swapper/0	05:35:18	0
1796	2	76	0,3	sleep0	14818	-21	spawn	06:03:09	0
1796	2	76	0,3	sleep0	14818	-21	spawn	06:03:09	0
22419	2	67	0,2	sleep3	0	-21	swapper/3	05:32:36	3
8651	2	63	0,4	sleep2	8608	-21	execl	05:49:51	2
8651	2	63	0,4	sleep2	8608	-21	execl	05:49:51	2
14701	2	61	0,2	chrt	14685	-21	context1	06:02:06	2
14701	2	61	0,2	chrt	14685	-21	context1	06:02:06	2
13532	2	61	0,3	sleep0	12068	-21	ls	05:06:29	0
13532	2	61	0,3	sleep0	12068	-21	ls	05:06:29	0
12804	2	58	0,2	sleep1	12799	-21	pipe	06:00:05	1
12804	2	58	0,2	sleep1	12799	-21	pipe	06:00:05	1
12804	2	58	0,2	sleep1	12799	-21	pipe	06:00:05	1
10568	2	56	0,3	chrt	10513	-21	fstime	05:54:03	0
10568	2	56	0,3	chrt	10513	-21	fstime	05:54:03	0
14743	2	54	0,2	sleep1	14732	-21	context1	06:02:22	1
14743	2	54	0,2	sleep1	14732	-21	context1	06:02:22	1
14216	2	52	0,3	chrt	0	-21	swapper/3	06:26:22	3
14216	2	52	0,3	chrt	0	-21	swapper/3	06:26:22	3
14216	2	52	0,3	chrt	0	-21	swapper/3	06:26:22	3
14377	2	50	0,3	sleep2	0	-21	swapper/2	05:11:13	2
26844	2	48	0,3	sleep1	0	-21	swapper/1	05:34:51	1
17068	2	46	0,3	sleep0	0	-21	swapper/0	05:39:53	0
17068	2	46	0,3	sleep0	0	-21	swapper/0	05:39:53	0
17068	2	46	0,3	sleep0	0	-21	swapper/0	05:39:53	0
18259	2	43	0,3	sleep2	0	-21	swapper/2	05:21:05	2
27918	2	40	0,3	sleep1	0	-21	swapper/1	05:40:18	1
27918	2	40	0,3	sleep1	0	-21	swapper/1	05:40:18	1
27918	2	40	0,3	sleep1	0	-21	swapper/1	05:40:18	1
18732	2	40	0,1	sleep1	18686	-21	fstime	05:25:15	1
12347	2	40	0,2	sleep0	12325	-21	fstime	05:56:58	0
12347	2	40	0,2	sleep0	12325	-21	fstime	05:56:58	0
12347	2	40	0,2	sleep0	12325	-21	fstime	05:56:58	0
20733	2	37	0,2	sleep1	20715	-21	pipe	05:30:34	1
20733	2	37	0,2	sleep1	20715	-21	pipe	05:30:34	1
20733	2	37	0,2	sleep1	20715	-21	pipe	05:30:34	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17