OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #d, slot #3

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance

Characteristics of the 100 highest latencies:

System rackdslot3.osadl.org (updated Thu Jun 04, 2026 00:45:50)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1394	91	240	172,23	phc2sys	0	-21	swapper/3	19:06:54	3
17729	2	205	172,22	sleep2	0	-21	swapper/2	19:08:12	2
17534	2	201	168,22	sleep1	0	-21	swapper/1	19:05:45	1
17538	2	200	167,22	sleep0	0	-21	swapper/0	19:05:49	0
1394	91	86	63,15	phc2sys	0	-21	swapper/3	19:10:00	3
18160	99	65	9,16	cyclictest	27885	-21	latency_hist	21:25:00	0
18160	99	65	9,16	cyclictest	24363	-21	cpu	22:25:11	0
18162	99	61	0,26	cyclictest	18356	-21	grep	23:20:12	2
18162	99	61	0,26	cyclictest	18356	-21	grep	23:20:12	2
18160	99	59	9,17	cyclictest	10791	-21	irqrtprio	00:10:19	0
18160	99	57	9,11	cyclictest	16624	-21	cat	20:50:09	0
18160	99	56	9,15	cyclictest	8659	-21	ls	00:05:21	0
18160	99	56	9,14	cyclictest	13328	-21	apt-config	20:40:01	0
18160	99	56	8,12	cyclictest	15155	-21	ls	23:10:26	0
18160	99	55	9,15	cyclictest	10642	-21	diskstats	20:30:11	0
18160	99	55	9,14	cyclictest	2903	-21	apt-get	21:40:11	0
18160	99	55	9,14	cyclictest	24402	-21	apt-get	19:30:08	0
18160	99	55	8,14	cyclictest	21414	-21	apt-get	19:20:08	0
18160	99	55	8,14	cyclictest	1196	-21	apt-get	20:00:07	0
18160	99	55	8,14	cyclictest	10003	-21	apt-get	21:55:12	0
18160	99	54	9,16	cyclictest	4313	-21	grep	20:10:09	0
18160	99	54	8,14	cyclictest	14763	-21	apt-get	22:05:12	0
18160	99	54	4,17	cyclictest	32062	-21	unixbench_multi	23:45:25	0
1343	91	54	0,2	getstats	0	-21	swapper/3	00:30:09	3
6547	2	53	0,3	sleep3	0	-21	swapper/3	00:00:24	3
18160	99	53	9,14	cyclictest	14910	-21	apt-get	00:20:13	0
18160	99	53	9,13	cyclictest	12901	-21	hddtemp_smartct	22:00:17	0
18160	99	53	9,13	cyclictest	12901	-21	hddtemp_smartct	22:00:17	0
18160	99	53	8,8	cyclictest	8286	-21	ls	20:20:15	0
18160	99	53	8,14	cyclictest	19561	-21	apt-get	22:15:12	0
18160	99	53	8,13	cyclictest	18192	-21	apt-get	19:10:13	0
18160	99	52	9,14	cyclictest	23476	-21	ps	00:35:22	0
18160	99	52	9,12	cyclictest	23298	-21	apt-get	23:30:11	0
18160	99	52	8,13	cyclictest	11162	-21	apt-get	23:05:11	0
1671	2	52	0,2	sleep2	0	-21	swapper/2	22:45:13	2
1393	91	52	0,1	ptp4l	39	1	rcuc/3	22:15:31	3
18160	99	51	9,14	cyclictest	18634	-21	df	23:20:13	0
18160	99	51	9,14	cyclictest	18634	-21	df	23:20:13	0
18160	99	50	9,15	cyclictest	1397	-21	apt-get	22:45:11	0
18160	99	50	9,14	cyclictest	21214	-21	df	23:25:13	0
18160	99	50	9,13	cyclictest	17683	-21	perl	22:10:17	0
18160	99	50	7,14	cyclictest	29137	-21	ls	21:25:19	0
18160	99	50	10,8	cyclictest	26053	-21	diskstats	23:35:15	0
18160	99	48	8,13	cyclictest	32124	-21	ls	21:30:25	0
18160	99	48	8,13	cyclictest	32124	-21	ls	21:30:25	0
18160	99	48	10,8	cyclictest	8925	-21	ptp4l	21:50:24	0
18160	99	46	8,7	cyclictest	18378	-21	ls	00:25:21	0
18160	99	45	9,7	cyclictest	13813	-21	ptp4l	00:15:24	0
18160	99	45	8,14	cyclictest	24886	-21	apt-config	21:15:02	0
18160	99	44	7,14	cyclictest	1951	-21	ls	21:35:26	0
18160	99	43	8,7	cyclictest	23554	-21	meminfo	21:10:17	0
18160	99	43	8,15	cyclictest	29337	-21	df	22:35:14	0
1393	91	43	0,0	ptp4l	40	1	ktimersoftd/3	22:34:44	3
1393	91	43	0,0	ptp4l	40	1	ktimersoftd/3	21:54:03	3
18163	99	41	34,4	cyclictest	24646	-21	cron	21:15:01	3
1393	91	41	0,0	ptp4l	40	1	ktimersoftd/3	23:29:00	3
18162	99	39	0,20	cyclictest	7331	-21	taskset	21:49:21	2
18161	99	39	32,4	cyclictest	25	-21	ksoftirqd/1	20:15:59	1
1393	91	39	0,0	ptp4l	40	1	ktimersoftd/3	00:15:12	3
18162	99	38	32,4	cyclictest	33	-21	ksoftirqd/2	00:25:01	2
18162	99	38	32,3	cyclictest	9393	-21	cron	20:25:00	2
18162	99	38	14,17	cyclictest	0	-21	swapper/2	23:49:57	2
18161	99	38	30,5	cyclictest	25	-21	ksoftirqd/1	22:02:28	1
18161	99	38	30,5	cyclictest	25	-21	ksoftirqd/1	22:02:28	1
24382	2	37	0,1	sleep1	24383	-21	run-parts	00:40:00	1
18163	99	37	32,3	cyclictest	41	-21	ksoftirqd/3	23:19:59	3
18162	99	37	31,4	cyclictest	33	-21	ksoftirqd/2	23:16:46	2
18162	99	37	31,4	cyclictest	33	-21	ksoftirqd/2	00:37:33	2
18161	99	37	31,4	cyclictest	25	-21	ksoftirqd/1	20:59:05	1
18160	99	37	11,16	cyclictest	730	-21	df_abs	23:50:13	0
578	98	36	0,2	rtkit-daemon	0	-21	swapper/3	19:51:36	3
18163	99	36	30,4	cyclictest	41	-21	ksoftirqd/3	22:29:45	3
18163	99	36	0,2	cyclictest	12	1	rcu_preempt	22:05:21	3
18162	99	36	30,4	cyclictest	33	-21	ksoftirqd/2	22:00:08	2
18162	99	36	30,4	cyclictest	33	-21	ksoftirqd/2	22:00:08	2
18162	99	36	30,4	cyclictest	33	-21	ksoftirqd/2	20:01:22	2
18161	99	36	30,4	cyclictest	25	-21	ksoftirqd/1	22:53:25	1
18161	99	36	30,4	cyclictest	25	-21	ksoftirqd/1	22:53:25	1
18161	99	36	30,4	cyclictest	25	-21	ksoftirqd/1	22:22:53	1
18161	99	36	30,4	cyclictest	25	-21	ksoftirqd/1	00:21:03	1
18160	99	36	30,3	cyclictest	9	-21	ksoftirqd/0	19:50:00	0
18160	99	36	10,14	cyclictest	30681	-21	df	19:50:09	0
578	98	35	0,2	rtkit-daemon	0	-21	swapper/3	20:48:32	3
18163	99	35	30,3	cyclictest	41	-21	ksoftirqd/3	22:03:15	3
18163	99	35	30,3	cyclictest	41	-21	ksoftirqd/3	22:03:15	3
18163	99	35	30,3	cyclictest	41	-21	ksoftirqd/3	20:40:07	3
18163	99	35	29,4	cyclictest	41	-21	ksoftirqd/3	23:31:07	3
18163	99	35	29,4	cyclictest	41	-21	ksoftirqd/3	21:58:24	3
18162	99	35	29,4	cyclictest	33	-21	ksoftirqd/2	22:25:38	2
18162	99	35	29,4	cyclictest	33	-21	ksoftirqd/2	21:17:03	2
18161	99	35	30,3	cyclictest	25	-21	ksoftirqd/1	00:04:51	1
18161	99	35	29,4	cyclictest	25	-21	ksoftirqd/1	23:59:45	1
18161	99	35	29,4	cyclictest	25	-21	ksoftirqd/1	23:36:03	1
18161	99	35	29,4	cyclictest	25	-21	ksoftirqd/1	23:17:52	1
18161	99	35	29,4	cyclictest	25	-21	ksoftirqd/1	22:37:22	1
18161	99	35	29,4	cyclictest	25	-21	ksoftirqd/1	22:07:49	1
18161	99	35	29,4	cyclictest	25	-21	ksoftirqd/1	21:41:25	1
18161	99	35	29,4	cyclictest	25	-21	ksoftirqd/1	20:50:07	1
18161	99	35	29,4	cyclictest	25	-21	ksoftirqd/1	19:43:19	1
18161	99	35	29,4	cyclictest	25	-21	ksoftirqd/1	19:15:35	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-06-15 - 15:03