OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #0, slot #2

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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack0slot2.osadl.org (updated Mon Jun 16, 2025 12:43:36)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3215278	99	50	0,48	cyclictest	643	-21	systemd-journal	15:48:32	7
3215278	99	44	43,0	cyclictest	0	-21	swapper/7	15:43:27	7
3215254	99	41	39,2	cyclictest	3215518	-21	kworker/u16:2+events_unbound	15:43:28	4
3215271	99	40	37,2	cyclictest	3701644	-21	kworker/u16:0+events_unbound	20:49:28	6
3215271	99	39	37,2	cyclictest	3806328	-21	kworker/u16:4+flush-8:0	20:44:04	6
3215271	99	36	33,2	cyclictest	3465112	-21	kworker/u16:0+flush-8:0	18:04:25	6
3215271	99	36	33,2	cyclictest	2447960	-21	kworker/u16:5+events_unbound	16:54:12	6
3748512	2	33	0,1	chrt	3748511	-21	kthreadcore	19:49:33	7
3514724	2	33	0,1	chrt	0	-21	swapper/7	17:54:35	7
3215271	99	31	29,2	cyclictest	3414204	-21	kworker/u16:2+flush-8:0	17:29:04	6
3215271	99	31	29,2	cyclictest	2447960	-21	kworker/u16:5+flush-8:0	16:14:05	6
3215271	99	31	28,2	cyclictest	3270430	-21	kworker/u16:3+events_unbound	16:44:24	6
3215271	99	30	28,2	cyclictest	3414204	-21	kworker/u16:2+events_unbound	17:14:44	6
3215271	99	30	28,2	cyclictest	2447960	-21	kworker/u16:5+events_unbound	16:59:45	6
3215271	99	30	27,2	cyclictest	3701644	-21	kworker/u16:0+events_unbound	20:54:29	6
3215271	99	30	27,2	cyclictest	2447960	-21	kworker/u16:5+flush-8:0	17:39:25	6
3215271	99	29	27,2	cyclictest	3701644	-21	kworker/u16:0+events_unbound	20:04:04	6
3215271	99	29	27,2	cyclictest	2447960	-21	kworker/u16:5+events_unbound	15:40:59	6
3215271	99	29	26,2	cyclictest	2447960	-21	kworker/u16:5+events_unbound	15:54:11	6
3215278	99	28	27,0	cyclictest	0	-21	swapper/7	19:45:32	7
3215278	99	28	27,0	cyclictest	0	-21	swapper/7	18:05:19	7
3215271	99	28	26,2	cyclictest	3289989	-21	kworker/u16:1+events_unbound	17:29:11	6
3215271	99	28	26,2	cyclictest	3281395	-21	kworker/u16:0+flush-8:0	16:09:09	6
3215278	99	27	26,0	cyclictest	0	-21	swapper/7	19:31:53	7
3215271	99	27	25,2	cyclictest	3701644	-21	kworker/u16:0+flush-8:0	20:14:34	6
3215278	99	26	25,0	cyclictest	0	-21	swapper/7	18:01:46	7
3215278	99	26	25,0	cyclictest	0	-21	swapper/7	17:11:15	7
3215278	99	26	0,24	cyclictest	3486056	-21	latency_hist	17:44:10	7
3215271	99	26	24,2	cyclictest	3784606	-21	kworker/u16:3+events_unbound	20:24:08	6
3215271	99	26	24,2	cyclictest	3763073	-21	kworker/u16:1+events_unbound	20:24:27	6
3215271	99	26	24,2	cyclictest	3414204	-21	kworker/u16:2+events_unbound	18:25:09	6
3215278	99	25	24,0	cyclictest	0	-21	swapper/7	21:02:40	7
3215278	99	25	24,0	cyclictest	0	-21	swapper/7	20:46:28	7
3215278	99	25	24,0	cyclictest	0	-21	swapper/7	20:00:13	7
3215278	99	25	24,0	cyclictest	0	-21	swapper/7	18:32:44	7
3215271	99	25	23,2	cyclictest	3414204	-21	kworker/u16:2+events_unbound	17:54:10	6
3215278	99	24	24,0	cyclictest	0	-21	swapper/7	19:38:57	7
3215278	99	24	23,0	cyclictest	0	-21	swapper/7	20:57:13	7
3215278	99	24	23,0	cyclictest	0	-21	swapper/7	20:35:28	7
3215278	99	24	23,0	cyclictest	0	-21	swapper/7	20:35:28	7
3215278	99	24	23,0	cyclictest	0	-21	swapper/7	20:31:33	7
3215278	99	24	23,0	cyclictest	0	-21	swapper/7	20:26:44	7
3215278	99	24	23,0	cyclictest	0	-21	swapper/7	19:25:44	7
3215278	99	24	0,23	cyclictest	3466175	-21	sendmail	17:34:10	7
3215271	99	24	21,2	cyclictest	2447960	-21	kworker/u16:5+events_unbound	17:09:13	6
3215278	99	23	22,1	cyclictest	0	-21	swapper/7	19:10:29	7
3215278	99	23	22,0	cyclictest	0	-21	swapper/7	19:19:25	7
3215278	99	23	22,0	cyclictest	0	-21	swapper/7	18:51:24	7
3215278	99	23	22,0	cyclictest	0	-21	swapper/7	15:55:33	7
3215271	99	23	21,2	cyclictest	3659888	-21	kworker/u16:7+flush-8:0	19:39:29	6
3215271	99	23	21,2	cyclictest	3508120	-21	kworker/u16:3+flush-8:0	18:34:24	6
3215271	99	23	21,2	cyclictest	3508120	-21	kworker/u16:3+events_unbound	18:09:35	6
3215278	99	22	21,0	cyclictest	0	-21	swapper/7	20:39:24	7
3215278	99	22	21,0	cyclictest	0	-21	swapper/7	20:12:07	7
3215278	99	22	21,0	cyclictest	0	-21	swapper/7	19:57:33	7
3215278	99	22	21,0	cyclictest	0	-21	swapper/7	18:28:07	7
3215278	99	22	21,0	cyclictest	0	-21	swapper/7	18:10:08	7
3215278	99	22	21,0	cyclictest	0	-21	swapper/7	16:47:01	7
3215278	99	22	21,0	cyclictest	0	-21	swapper/7	16:14:52	7
3215278	99	22	20,1	cyclictest	0	-21	swapper/7	17:16:08	7
3215278	99	22	0,21	cyclictest	3814647	-21	latency_hist	20:24:08	7
3215271	99	22	20,2	cyclictest	3270430	-21	kworker/u16:3+flush-8:0	16:14:27	6
3215271	99	22	19,2	cyclictest	3352334	-21	kworker/u16:2+flush-8:0	16:49:16	6
3215263	99	22	18,3	cyclictest	3239142	-21	pool-/usr/libex	15:40:37	5
3215278	99	21	21,0	cyclictest	0	-21	swapper/7	19:03:39	7
3215278	99	21	21,0	cyclictest	0	-21	swapper/7	19:03:39	7
3215278	99	21	21,0	cyclictest	0	-21	swapper/7	16:58:13	7
3215278	99	21	20,0	cyclictest	0	-21	swapper/7	19:17:00	7
3215278	99	21	20,0	cyclictest	0	-21	swapper/7	17:46:13	7
3215278	99	21	20,0	cyclictest	0	-21	swapper/7	16:22:17	7
3215278	99	21	20,0	cyclictest	0	-21	swapper/7	15:49:57	7
3215271	99	21	19,2	cyclictest	3609108	-21	kworker/u16:4+flush-8:0	18:54:09	6
3215271	99	21	18,2	cyclictest	3611558	-21	kworker/u16:5+events_unbound	19:09:27	6
3215271	99	21	18,2	cyclictest	3270430	-21	kworker/u16:3+flush-8:0	16:39:22	6
3215271	99	21	18,2	cyclictest	3270430	-21	kworker/u16:3+flush-8:0	16:39:22	6
3215278	99	20	19,0	cyclictest	0	-21	swapper/7	20:05:36	7
3215278	99	20	19,0	cyclictest	0	-21	swapper/7	19:40:04	7
3215278	99	20	19,0	cyclictest	0	-21	swapper/7	18:24:04	7
3215278	99	20	19,0	cyclictest	0	-21	swapper/7	18:17:53	7
3215278	99	20	19,0	cyclictest	0	-21	swapper/7	18:17:53	7
3215278	99	20	19,0	cyclictest	0	-21	swapper/7	17:25:56	7
3215278	99	20	19,0	cyclictest	0	-21	swapper/7	16:40:12	7
3215278	99	20	19,0	cyclictest	0	-21	swapper/7	16:40:12	7
3215271	99	20	18,2	cyclictest	3670872	-21	kworker/u16:0+events_unbound	19:14:24	6
3215271	99	20	18,2	cyclictest	3259757	-21	kworker/u16:2+flush-8:0	15:54:09	6
3215271	99	20	17,2	cyclictest	2447960	-21	kworker/u16:5+events_unbound	15:59:23	6
3215271	99	19	17,2	cyclictest	3876101	-21	kworker/u16:1+flush-8:0	20:59:39	6
3215271	99	19	17,2	cyclictest	3414204	-21	kworker/u16:2+events_unbound	17:34:34	6
3215271	99	19	16,2	cyclictest	3701644	-21	kworker/u16:0+events_unbound	19:29:23	6
3215278	99	18	18,0	cyclictest	0	-21	swapper/7	19:08:48	7
3215278	99	18	17,0	cyclictest	0	-21	swapper/7	16:35:29	7
3215271	99	18	16,2	cyclictest	3701644	-21	kworker/u16:0+events_unbound	19:36:09	6
3215271	99	18	15,2	cyclictest	3588980	-21	kworker/u16:0+events_unbound	18:54:26	6
3215278	99	17	17,0	cyclictest	0	-21	swapper/7	20:17:51	7
3215271	99	17	15,2	cyclictest	3466185	-21	kworker/u16:4+events_unbound	18:14:45	6
3215271	99	17	15,2	cyclictest	3466185	-21	kworker/u16:4+events_unbound	18:14:45	6
3215271	99	17	15,2	cyclictest	3289989	-21	kworker/u16:1+flush-8:0	16:34:04	6
3215263	99	17	0,17	cyclictest	0	-21	swapper/5	15:49:33	5
3215254	99	17	0,1	cyclictest	0	-21	swapper/4	16:49:35	4
3215278	99	16	15,0	cyclictest	0	-21	swapper/7	18:36:45	7
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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