OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, 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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack7slot2.osadl.org (updated Sat Jan 31, 2026 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
846131	99	113	104,7	cyclictest	958309	-21	kworker/u4:5+events_unbound	10:46:00	1
846131	99	109	99,7	cyclictest	871426	-21	kworker/u4:2+events_unbound	09:20:47	1
846130	99	107	70,31	cyclictest	54	-21	kswapd0	09:55:11	0
846130	99	107	70,31	cyclictest	54	-21	kswapd0	09:55:11	0
846130	99	101	69,20	cyclictest	255	50	irq/23-42890000.ethernet	07:09:59	0
846131	99	100	93,5	cyclictest	962710	-21	kworker/u4:3+events_unbound	11:01:01	1
846131	99	100	92,4	cyclictest	1006203	-21	kworker/u4:7+events_unbound	11:41:11	1
846131	99	98	87,6	cyclictest	984150	-21	kworker/u4:6+events_unbound	11:16:04	1
846131	99	97	89,5	cyclictest	868891	-21	kworker/u4:5+events_unbound	08:45:37	1
846131	99	97	86,8	cyclictest	1036326	-21	kworker/u4:13+events_unbound	12:16:13	1
846131	99	96	87,6	cyclictest	984147	-21	kworker/u4:0+events_unbound	11:21:04	1
846131	99	96	76,7	cyclictest	852399	-21	kworker/u4:2+events_unbound	07:35:12	1
846131	99	95	88,5	cyclictest	975329	-21	kworker/u4:11+events_unbound	11:11:03	1
846131	99	95	88,5	cyclictest	975329	-21	kworker/u4:11+events_unbound	11:11:03	1
846131	99	91	83,6	cyclictest	1027551	-21	kworker/u4:5+events_unbound	12:06:14	1
846131	99	85	70,6	cyclictest	993029	-21	kworker/u4:3+events_unbound	11:31:07	1
846130	99	84	35,45	cyclictest	852625	-21	aten2__	07:35:14	0
846131	99	83	77,4	cyclictest	1040749	-21	kworker/u4:0+events_unbound	12:36:16	1
846131	99	82	76,5	cyclictest	861318	-21	kworker/u4:1+events_unbound	08:10:22	1
846131	99	79	71,6	cyclictest	832244	-21	kworker/u4:15+events_unbound	07:30:10	1
846131	99	79	71,6	cyclictest	1023173	-21	kworker/u4:7+events_unbound	12:01:12	1
846130	99	79	42,34	cyclictest	861973	-21	sd-accept	08:10:19	0
846130	99	77	26,43	cyclictest	948282	-21	mailstats	10:30:35	0
846131	99	76	68,5	cyclictest	872687	-21	kworker/u4:16+events_unbound	09:05:00	1
846131	99	76	63,5	cyclictest	866380	-21	kworker/u4:10+events_unbound	08:30:00	1
846130	99	76	49,20	cyclictest	54	-21	kswapd0	10:50:13	0
846130	99	76	49,19	cyclictest	54	-21	kswapd0	10:35:11	0
846130	99	75	53,15	cyclictest	997418	-21	kworker/u4:2+xprtiod	11:30:11	0
846130	99	75	51,17	cyclictest	54	-21	kswapd0	12:10:09	0
846130	99	75	35,37	cyclictest	0	-21	swapper/0	12:35:18	0
846131	99	74	62,8	cyclictest	899878	-21	ntp_states	09:35:31	1
846131	99	74	62,5	cyclictest	1023169	-21	kworker/u4:3+events_unbound	12:00:00	1
846131	99	74	62,5	cyclictest	1023169	-21	kworker/u4:3+events_unbound	12:00:00	1
846131	99	73	64,6	cyclictest	984148	-21	kworker/u4:4+events_unbound	11:30:00	1
846131	99	73	61,8	cyclictest	0	-21	swapper/1	10:55:39	1
846131	99	70	63,5	cyclictest	847345	-21	kworker/u4:6+events_unbound	07:20:00	1
846130	99	70	36,32	cyclictest	859112	-21	aten_r7power_po	08:00:17	0
846130	99	70	23,42	cyclictest	866398	-21	modprobe	08:29:59	0
846130	99	70	21,46	cyclictest	255	50	irq/23-42890000.ethernet	11:55:30	0
846130	99	70	21,46	cyclictest	255	50	irq/23-42890000.ethernet	11:55:29	0
846130	99	69	39,27	cyclictest	850356	-21	fschecks_count	07:25:19	0
846130	99	69	36,30	cyclictest	934918	-21	ntp_kernel_pll_	10:15:27	0
846130	99	69	19,44	cyclictest	0	-21	swapper/0	12:20:10	0
846130	99	69	19,44	cyclictest	0	-21	swapper/0	12:20:09	0
846130	99	68	14,7	cyclictest	1038347	-21	ssh	12:15:13	0
846130	99	67	36,28	cyclictest	875764	-21	gltestperf	09:05:21	0
846130	99	67	33,30	cyclictest	0	-21	swapper/0	11:00:16	0
846130	99	67	30,33	cyclictest	0	-21	swapper/0	11:15:21	0
846130	99	67	2,19	cyclictest	922070	-21	ps	10:00:34	0
846131	99	66	54,4	cyclictest	846066	-21	kworker/u4:3+events_unbound	07:15:02	1
846130	99	66	55,8	cyclictest	861319	-21	kworker/u4:3+events_unbound	08:30:24	0
846130	99	66	36,27	cyclictest	863843	-21	kworker/u4:4-xprtiod	08:40:20	0
846130	99	66	35,29	cyclictest	978136	-21	gltestperf	11:05:20	0
846131	99	65	47,8	cyclictest	1045175	-21	kworker/u4:3+events_unbound	12:22:44	1
846131	99	65	47,8	cyclictest	1045175	-21	kworker/u4:3+events_unbound	12:22:44	1
846130	99	65	57,6	cyclictest	847345	-21	kworker/u4:6+events_unbound	07:50:18	0
846130	99	65	33,29	cyclictest	0	-21	swapper/0	10:40:38	0
846130	99	65	31,31	cyclictest	872753	-21	latency_hist	08:55:01	0
846130	99	65	31,30	cyclictest	1016748	-21	dpkg	11:50:16	0
846130	99	65	29,33	cyclictest	848039	-21	kernelversion	07:15:22	0
846130	99	65	1,22	cyclictest	868376	-21	ntpq	08:35:25	0
846130	99	64	36,25	cyclictest	916538	-21	cat	09:55:02	0
846130	99	64	29,32	cyclictest	0	-21	swapper/0	10:25:22	0
846130	99	64	19,42	cyclictest	0	-21	swapper/0	11:50:00	0
846131	99	63	54,7	cyclictest	896719	-21	kworker/u4:7+events_unbound	10:00:01	1
846131	99	63	54,7	cyclictest	896719	-21	kworker/u4:7+events_unbound	10:00:00	1
846130	99	63	30,29	cyclictest	942697	-21	ssh	10:25:01	0
846130	99	63	27,32	cyclictest	0	-21	swapper/0	10:55:36	0
846130	99	63	2,13	cyclictest	848835	-21	apt-get	07:20:13	0
846130	99	63	1,9	cyclictest	909225	-21	vmstat	09:45:41	0
846130	99	63	17,44	cyclictest	0	-21	swapper/0	11:10:14	0
846130	99	63	17,44	cyclictest	0	-21	swapper/0	11:10:13	0
846130	99	63	1,60	cyclictest	0	-21	swapper/0	10:45:30	0
846130	99	63	1,14	cyclictest	860258	-21	apt-get	08:05:16	0
846130	99	62	40,19	cyclictest	854951	-21	modprobe	07:44:59	0
846130	99	62	39,20	cyclictest	0	-21	swapper/0	11:20:16	0
846130	99	62	31,26	cyclictest	0	-21	swapper/0	12:05:34	0
846130	99	62	30,29	cyclictest	890527	-21	fschecks_count	09:25:23	0
846130	99	62	29,29	cyclictest	0	-21	swapper/0	12:30:30	0
846130	99	61	41,14	cyclictest	0	-21	swapper/0	11:25:12	0
846130	99	61	36,23	cyclictest	855455	-21	fschecks_time	07:45:20	0
846130	99	61	30,29	cyclictest	0	-21	swapper/0	07:10:36	0
846130	99	61	30,28	cyclictest	1040753	-21	kworker/u4:7-rpciod	12:25:23	0
846130	99	61	26,30	cyclictest	0	-21	swapper/0	11:40:02	0
846130	99	61	24,35	cyclictest	1008212	-21	aten_r7power_po	11:40:16	0
846130	99	61	2,16	cyclictest	873493	-21	ntpq	08:55:29	0
846130	99	61	1,5	cyclictest	895394	-21	ntpq	09:30:30	0
846131	99	60	54,4	cyclictest	919223	-21	kworker/u4:2+events_unbound	10:19:59	1
846131	99	60	53,5	cyclictest	945128	-21	kworker/u4:1+events_unbound	10:36:17	1
846131	99	60	53,5	cyclictest	849891	-21	kworker/u4:10+events_unbound	07:25:01	1
846130	99	60	3,14	cyclictest	904416	-21	ps	09:40:39	0
846130	99	60	2,55	cyclictest	885419	-21	modprobe	09:19:59	0
846130	99	60	19,38	cyclictest	0	-21	swapper/0	09:35:31	0
846131	99	59	51,6	cyclictest	875221	-21	kworker/u4:1+events_unbound	09:05:47	1
846131	99	58	44,6	cyclictest	931841	-21	kworker/u4:15+events_unbound	10:15:01	1
846131	99	58	42,11	cyclictest	0	-21	swapper/1	09:10:27	1
846131	99	58	41,5	cyclictest	846067	-21	kworker/u4:4+events_unbound	07:40:01	1
846130	99	58	2,13	cyclictest	863355	-21	ntpq	08:15:28	0
846130	99	58	13,42	cyclictest	877104	-21	ssh	09:10:18	0
846131	99	57	50,5	cyclictest	953859	-21	kworker/u4:2+events_unbound	10:41:01	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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