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 792 highest latencies:

System rack7slot2.osadl.org (updated Fri Nov 07, 2025 00:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
4054180	99	133	125,6	cyclictest	3838913	-21	kworker/u4:5+events_unbound	19:57:27	1
4054180	99	133	125,6	cyclictest	3838913	-21	kworker/u4:5+events_unbound	19:57:27	1
4054180	99	132	124,6	cyclictest	4051656	-21	kworker/u4:6+events_unbound	20:22:32	1
4054180	99	123	116,5	cyclictest	4166254	-21	kworker/u4:5+events_unbound	23:03:15	1
4054180	99	120	113,5	cyclictest	4051635	-21	kworker/u4:0+events_unbound	20:27:33	1
4054180	99	120	113,5	cyclictest	4051635	-21	kworker/u4:0+events_unbound	20:27:33	1
4054180	99	119	112,5	cyclictest	4084041	-21	kworker/u4:12+events_unbound	21:02:40	1
4054180	99	114	107,5	cyclictest	4070964	-21	kworker/u4:2+events_unbound	20:12:26	1
4054178	99	112	105,5	cyclictest	51858	-21	kworker/u4:1+events_unbound	00:38:31	0
4054180	99	109	101,6	cyclictest	4185475	-21	kworker/u4:9+events_unbound	23:48:20	1
4054178	99	105	92,10	cyclictest	53	-21	kswapd0	22:05:11	0
4054180	99	104	97,5	cyclictest	4082732	-21	kworker/u4:7+events_unbound	20:57:36	1
4054180	99	104	96,6	cyclictest	4051635	-21	kworker/u4:0+events_unbound	20:02:26	1
4054180	99	102	95,5	cyclictest	4056714	-21	kworker/u4:14+events_unbound	19:27:26	1
4054180	99	102	95,5	cyclictest	4056714	-21	kworker/u4:14+events_unbound	19:27:25	1
4054178	99	102	94,4	cyclictest	19	1	rcuc/0	20:42:34	0
4054180	99	99	92,5	cyclictest	4051656	-21	kworker/u4:6+events_unbound	19:32:25	1
4054180	99	99	92,5	cyclictest	22636	-21	kworker/u4:1+events_unbound	00:13:28	1
4054178	99	99	11,24	cyclictest	4054155	-21	munin-run	19:10:01	0
4054178	99	98	83,8	cyclictest	257	50	irq/23-42890000.ethernet	00:20:30	0
4054180	99	95	86,7	cyclictest	4055418	-21	kworker/u4:8+events_unbound	19:37:26	1
4054178	99	93	82,7	cyclictest	4107660	-21	kworker/u4:2+events_unbound	22:02:53	0
4054180	99	92	85,5	cyclictest	4055418	-21	kworker/u4:8+events_unbound	19:42:21	1
4054178	99	87	54,29	cyclictest	4085665	-21	ssh	21:10:15	0
4054178	99	86	19,17	cyclictest	257	50	irq/23-42890000.ethernet	00:30:43	0
4054180	99	84	77,5	cyclictest	4051635	-21	kworker/u4:0+events_unbound	19:12:22	1
4054178	99	84	72,6	cyclictest	4185476	-21	kworker/u4:10+events_unbound	23:18:17	0
4054178	99	84	6,25	cyclictest	4102333	-21	sh	21:30:29	0
4054178	99	83	78,3	cyclictest	4051635	-21	kworker/u4:0+events_unbound	20:17:31	0
4054178	99	81	71,7	cyclictest	4155194	-21	kworker/u4:9+events_unbound	22:38:03	0
4054178	99	80	45,32	cyclictest	379	-21	dbus-daemon	00:13:28	0
4054178	99	80	3,30	cyclictest	4138430	-21	ssh	22:15:29	0
4054180	99	79	70,6	cyclictest	4155193	-21	kworker/u4:8+events_unbound	22:58:14	1
4054178	99	79	74,3	cyclictest	4051635	-21	kworker/u4:0+events_unbound	19:17:22	0
4054178	99	79	72,5	cyclictest	4065817	-21	kworker/u4:4+events_unbound	20:47:35	0
4054178	99	79	72,5	cyclictest	4065817	-21	kworker/u4:4+events_unbound	20:47:35	0
4054178	99	79	71,6	cyclictest	4051635	-21	kworker/u4:0+events_unbound	19:12:11	0
4054178	99	76	39,35	cyclictest	4106295	-21	gcc	21:35:26	0
4054178	99	75	38,5	cyclictest	4058512	-21	fschecks_time	19:25:22	0
4054178	99	75	38,5	cyclictest	4058512	-21	fschecks_time	19:25:22	0
4054178	99	74	66,6	cyclictest	4072344	-21	kworker/u4:9+events_unbound	21:17:42	0
4054178	99	74	66,6	cyclictest	4072344	-21	kworker/u4:9+events_unbound	21:17:42	0
4054178	99	74	36,32	cyclictest	0	-21	swapper/0	23:00:38	0
4054178	99	73	57,5	cyclictest	4177805	-21	kworker/u4:7+events_unbound	23:08:17	0
4054178	99	72	65,5	cyclictest	7138	-21	kworker/u4:16+events_unbound	23:40:01	0
4054178	99	71	36,5	cyclictest	4083826	-21	timerandwakeup	21:00:37	0
4054178	99	71	35,5	cyclictest	4189317	-21	kworker/u4:2-rpciod	23:25:41	0
4054178	99	70	9,7	cyclictest	0	-21	swapper/0	22:10:08	0
4054178	99	70	61,7	cyclictest	28990	-21	ntp_kernel_err	00:05:27	0
4054178	99	70	50,14	cyclictest	53	-21	kswapd0	22:30:09	0
4054178	99	70	50,14	cyclictest	53	-21	kswapd0	22:30:09	0
4054180	99	69	62,5	cyclictest	48270	-21	kworker/u4:9+events_unbound	00:33:31	1
4054180	99	69	2,54	cyclictest	4114484	-21	ssh	21:45:37	1
4054180	99	69	2,54	cyclictest	4114484	-21	ssh	21:45:37	1
4054178	99	69	62,5	cyclictest	4181663	-21	kworker/u4:6+events_unbound	23:13:14	0
4054178	99	69	59,7	cyclictest	4051636	-21	kworker/u4:1+events_unbound	19:32:19	0
4054178	99	68	59,7	cyclictest	4056712	-21	kworker/u4:12+events_unbound	20:07:28	0
4054178	99	67	60,5	cyclictest	4055418	-21	kworker/u4:8+events_unbound	19:52:23	0
4054178	99	66	33,5	cyclictest	4147672	-21	sshd	22:27:24	0
4054178	99	65	33,5	cyclictest	4157620	-21	ntp_kernel_pll_	22:40:27	0
4054180	99	64	56,6	cyclictest	4055418	-21	kworker/u4:8+events_unbound	19:50:03	1
4054178	99	64	29,5	cyclictest	4099486	-21	kworker/u4:4-rpciod	21:45:01	0
4054180	99	63	57,4	cyclictest	4081449	-21	kworker/u4:5+events_unbound	21:10:03	1
4054180	99	63	56,5	cyclictest	4135655	-21	kworker/u4:0+events_unbound	22:25:03	1
4054180	99	63	48,11	cyclictest	0	-21	swapper/1	22:40:25	1
4054178	99	62	53,6	cyclictest	4111745	-21	kworker/u4:7+events_unbound	21:52:49	0
4054180	99	61	3,48	cyclictest	4106318	-21	ssh	21:35:27	1
4054178	99	61	53,6	cyclictest	4099489	-21	kworker/u4:9+events_unbound	21:27:44	0
4054178	99	61	53,6	cyclictest	36445	-21	diskmemload	00:15:37	0
4054178	99	61	53,6	cyclictest	22636	-21	kworker/u4:1+events_unbound	00:30:02	0
4054178	99	61	53,6	cyclictest	22636	-21	kworker/u4:1+events_unbound	00:30:01	0
4054180	99	60	53,5	cyclictest	7136	-21	kworker/u4:14+events_unbound	23:40:03	1
4054180	99	60	53,5	cyclictest	4067101	-21	kworker/u4:13+events_unbound	20:05:02	1
4054178	99	60	54,4	cyclictest	3838913	-21	kworker/u4:5+events_unbound	19:47:26	0
4054178	99	59	51,6	cyclictest	4189317	-21	kworker/u4:2+events_unbound	23:43:19	0
4054178	99	59	50,6	cyclictest	4069678	-21	kworker/u4:1+events_unbound	20:12:31	0
4054180	99	58	51,5	cyclictest	4051656	-21	kworker/u4:6+events_unbound	20:17:01	1
4054178	99	58	40,5	cyclictest	4051635	-21	kworker/u4:0+events_unbound	21:22:44	0
4054180	99	57	48,7	cyclictest	3479	-21	systemd	23:33:18	1
4054178	99	57	39,11	cyclictest	0	-21	swapper/0	19:40:10	0
4054180	99	56	49,5	cyclictest	51063	-21	/usr/sbin/munin	00:35:42	1
4054178	99	56	46,7	cyclictest	4059289	-21	kworker/u4:21+events_unbound	20:02:28	0
4054180	99	55	47,6	cyclictest	4111744	-21	kworker/u4:6+events_unbound	21:44:39	1
4054180	99	55	43,8	cyclictest	37	-21	kcompactd0	22:00:23	1
4054180	99	55	42,9	cyclictest	4054176	-21	cyclictest	22:16:08	1
4054180	99	55	40,6	cyclictest	4051654	-21	kworker/u4:3+events_unbound	19:21:37	1
4054178	99	54	47,5	cyclictest	4119854	-21	kworker/u4:8+events_unbound	21:57:54	0
4054178	99	54	3,47	cyclictest	0	-21	swapper/0	20:50:10	0
4054180	99	53	47,5	cyclictest	4187459	-21	fschecks_count	23:20:20	1
4054180	99	53	46,5	cyclictest	4118185	-21	kernelversion	21:50:23	1
4054180	99	52	45,5	cyclictest	4176527	-21	diskmemload	23:05:27	1
4054180	99	52	45,5	cyclictest	4090042	-21	gltestperf	21:15:24	1
4054180	99	52	45,5	cyclictest	4090042	-21	gltestperf	21:15:23	1
4054180	99	52	44,6	cyclictest	19472	-21	systemd	23:53:26	1
4054178	99	52	44,6	cyclictest	4051654	-21	kworker/u4:3+events_unbound	19:37:19	0
4054178	99	52	42,8	cyclictest	4193124	-21	kworker/u4:13+events_unbound	00:03:28	0
4054180	99	51	44,5	cyclictest	4179898	-21	/usr/sbin/munin	23:10:18	1
4054180	99	51	43,6	cyclictest	28479	-21	/usr/sbin/munin	00:05:18	1
4054180	99	50	43,5	cyclictest	4085377	-21	munin-run	21:10:01	1
4054180	99	50	38,10	cyclictest	0	-21	swapper/1	22:30:34	1
4054180	99	50	38,10	cyclictest	0	-21	swapper/1	22:30:33	1
4054180	99	50	24,19	cyclictest	0	-21	swapper/1	23:15:08	1
4054178	99	50	42,6	cyclictest	17890	-21	sh	23:50:41	0
4054180	99	49	41,6	cyclictest	4076213	-21	kworker/u4:15+events_unbound	20:41:37	1
4054178	99	49	41,6	cyclictest	4070965	-21	kworker/u4:5+events_unbound	20:32:33	0
4054180	99	48	43,4	cyclictest	22636	-21	kworker/u4:1+events_unbound	00:28:17	1
4054180	99	48	43,4	cyclictest	22636	-21	kworker/u4:1+events_unbound	00:28:17	1
4054180	99	48	41,5	cyclictest	0	-21	swapper/1	22:20:25	1
4054180	99	48	38,7	cyclictest	0	-21	swapper/1	21:25:16	1
4054180	99	48	37,8	cyclictest	4102812	-21	unixbench_multi	21:30:39	1
4054180	99	48	34,6	cyclictest	4119854	-21	kworker/u4:8+events_unbound	21:59:45	1
4054178	99	48	41,5	cyclictest	4057261	-21	fschecks_time	19:20:22	0
4054180	99	47	37,7	cyclictest	38328	-21	sd-accept	00:18:28	1
4054180	99	47	37,6	cyclictest	0	-21	swapper/1	22:38:02	1
4054180	99	47	35,10	cyclictest	455	-21	sh	23:30:00	1
4054178	99	47	39,6	cyclictest	21150	-21	/usr/sbin/munin	23:55:22	0
4054178	99	47	37,6	cyclictest	4145260	-21	modprobe	22:25:00	0
4054180	99	46	39,5	cyclictest	24979	-21	fschecks_time	00:00:24	1
4054180	99	46	38,6	cyclictest	0	-21	swapper/1	21:21:29	1
4054180	99	46	12,18	cyclictest	0	-21	swapper/1	23:55:21	1
4054178	99	46	40,4	cyclictest	4188140	-21	mailstats	23:20:38	0
4054178	99	46	38,5	cyclictest	4160890	-21	aten_r7power_vo	22:45:19	0
4054178	99	46	37,7	cyclictest	4114049	-21	fschecks_time	21:45:24	0
4054178	99	46	37,7	cyclictest	4114049	-21	fschecks_time	21:45:23	0
4054180	99	45	35,7	cyclictest	4077662	-21	latency_hist	20:40:02	1
4054180	99	45	31,6	cyclictest	4069678	-21	kworker/u4:1+events_unbound	20:47:41	1
4054180	99	45	31,6	cyclictest	4069678	-21	kworker/u4:1+events_unbound	20:47:41	1
4054178	99	45	38,5	cyclictest	4169075	-21	ntpq	22:55:34	0
4054178	99	45	37,6	cyclictest	4054176	-21	cyclictest	22:53:52	0
4054180	99	44	37,5	cyclictest	4135655	-21	kworker/u4:0+events_unbound	22:12:36	1
4054180	99	44	34,8	cyclictest	4076251	-21	cron	20:35:00	1
4054180	99	44	33,8	cyclictest	0	-21	swapper/1	22:45:38	1
4054178	99	44	38,4	cyclictest	919	-21	aten_r7power_vo	23:30:18	0
4054178	99	44	36,5	cyclictest	4077521	-21	cron	20:40:00	0
4054178	99	44	35,6	cyclictest	4069678	-21	kworker/u4:1-rpciod	20:25:22	0
4054178	99	44	35,6	cyclictest	4069678	-21	kworker/u4:1-rpciod	20:25:22	0
4054180	99	43	34,6	cyclictest	41500	-21	kworker/u4:7+events_unbound	00:23:30	1
4054178	99	43	34,5	cyclictest	4065818	-21	kworker/u4:7-rpciod	19:55:41	0
4054178	99	43	34,5	cyclictest	4065818	-21	kworker/u4:7-rpciod	19:55:41	0
4054180	99	42	35,5	cyclictest	5512	-21	ntp_kernel_pll_	23:35:33	1
4054180	99	42	34,6	cyclictest	4076214	-21	kworker/u4:16+events_unbound	20:53:37	1
4054180	99	42	32,8	cyclictest	4064575	-21	munin-run	19:50:00	1
4054180	99	42	29,6	cyclictest	4041342	-21	kworker/u4:16+events_unbound	19:19:24	1
4054180	99	42	27,6	cyclictest	4123887	-21	kworker/u4:11+events_unbound	22:07:27	1
4054178	99	42	33,6	cyclictest	0	-21	swapper/0	23:45:20	0
4054180	99	41	34,5	cyclictest	0	-21	swapper/1	22:50:16	1
4054178	99	41	33,5	cyclictest	4074932	-21	kworker/u4:13-rpciod	20:55:41	0
4054178	99	38	27,8	cyclictest	0	-21	swapper/0	21:05:20	0
4054178	99	37	30,4	cyclictest	0	-21	swapper/0	20:20:36	0
4054180	99	32	26,4	cyclictest	0	-21	swapper/1	19:10:00	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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