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 highest latencies:

System rack7slot2.osadl.org (updated Sun Dec 21, 2025 12:44:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3759068	99	101	94,5	cyclictest	3825831	-21	kworker/u4:1+events_unbound	10:00:50	0
3759068	99	100	93,5	cyclictest	3850446	-21	kworker/u4:13+events_unbound	10:25:56	0
3759068	99	96	89,5	cyclictest	3929171	-21	kworker/u4:3+events_unbound	12:11:14	0
3759068	99	96	89,5	cyclictest	3788598	-21	kworker/u4:19+events_unbound	09:15:44	0
3759068	99	89	82,5	cyclictest	3891878	-21	kworker/u4:14+events_unbound	11:16:06	0
3759068	99	83	76,5	cyclictest	3788598	-21	kworker/u4:19+events_unbound	09:45:46	0
3759068	99	83	76,5	cyclictest	3761579	-21	kworker/u4:10+events_unbound	07:25:23	0
3759068	99	81	74,5	cyclictest	3908769	-21	kworker/u4:9+events_unbound	12:21:18	0
3759068	99	80	72,6	cyclictest	3825832	-21	kworker/u4:2+events_unbound	09:55:48	0
3759068	99	70	63,5	cyclictest	3756566	-21	kworker/u4:7+events_unbound	07:10:20	0
3759068	99	69	64,4	cyclictest	3834293	-21	kworker/u4:3+events_unbound	10:35:58	0
3759068	99	69	64,4	cyclictest	3834293	-21	kworker/u4:3+events_unbound	10:35:57	0
3759068	99	69	62,5	cyclictest	3904545	-21	kworker/u4:0+events_unbound	11:41:09	0
3759068	99	67	61,5	cyclictest	3756565	-21	kworker/u4:5+events_unbound	07:17:00	0
3759068	99	67	57,6	cyclictest	3927807	-21	ld	11:55:26	0
3759068	99	66	9,39	cyclictest	3759066	-21	awk	07:10:01	0
3759068	99	64	56,6	cyclictest	3834292	-21	kworker/u4:0+events_unbound	10:10:04	0
3759068	99	63	56,5	cyclictest	3908769	-21	kworker/u4:9+events_unbound	12:05:02	0
3759068	99	62	55,5	cyclictest	3904547	-21	kworker/u4:4+events_unbound	12:00:04	0
3759068	99	61	54,5	cyclictest	53	-21	kswapd0	10:30:14	0
3759068	99	61	53,6	cyclictest	3941825	-21	kworker/u4:0+events_unbound	12:15:21	0
3759068	99	61	47,6	cyclictest	3792483	-21	kworker/u4:0+events_unbound	09:21:59	0
3759069	99	60	54,4	cyclictest	3759065	-21	cyclictest	12:16:58	1
3759068	99	60	52,6	cyclictest	3946018	-21	kworker/u4:10+events_unbound	12:35:03	0
3759068	99	60	52,6	cyclictest	3765587	-21	kworker/u4:11+events_unbound	08:55:40	0
3759068	99	60	40,17	cyclictest	3848848	-21	fschecks_time	10:20:19	0
3759069	99	59	47,10	cyclictest	3805332	-21	kworker/u4:5+events_unbound	09:30:04	1
3759068	99	58	49,7	cyclictest	315	-21	systemd-journal	10:50:59	0
3759068	99	58	46,6	cyclictest	3805331	-21	kworker/u4:3+events_unbound	09:27:59	0
3759069	99	57	42,11	cyclictest	37	-21	kcompactd0	12:05:35	1
3759069	99	57	42,10	cyclictest	3761620	-21	sendmail	07:20:00	1
3759069	99	56	47,6	cyclictest	37	-21	kcompactd0	10:35:15	1
3759069	99	56	47,6	cyclictest	37	-21	kcompactd0	10:35:15	1
3759068	99	56	49,5	cyclictest	3782195	-21	kworker/u4:7+events_unbound	08:45:02	0
3759068	99	56	40,12	cyclictest	3881611	-21	apt-get	11:00:12	0
3759069	99	55	48,5	cyclictest	0	-21	swapper/1	11:35:09	1
3759069	99	55	38,11	cyclictest	3780943	-21	modprobe	08:35:01	1
3759068	99	55	48,5	cyclictest	3867318	-21	kworker/u4:5+events_unbound	10:46:43	0
3759069	99	54	45,6	cyclictest	3865888	-21	ntp_kernel_pll_	10:40:29	1
3759069	99	54	45,6	cyclictest	3865888	-21	ntp_kernel_pll_	10:40:28	1
3759069	99	54	41,8	cyclictest	0	-21	swapper/1	10:15:31	1
3759068	99	54	45,5	cyclictest	3883528	-21	kworker/u4:2+events_unbound	11:12:43	0
3759068	99	54	11,41	cyclictest	3816184	-21	ssh	09:40:28	0
3759068	99	54	11,41	cyclictest	3816184	-21	ssh	09:40:28	0
3759069	99	53	45,6	cyclictest	3871500	-21	kworker/u4:10+events_unbound	10:50:59	1
3759069	99	53	36,14	cyclictest	0	-21	swapper/1	11:26:09	1
3759068	99	53	45,6	cyclictest	3896081	-21	kworker/u4:5+events_unbound	11:24:44	0
3759068	99	53	42,7	cyclictest	3756562	-21	kworker/u4:2-xprtiod	07:30:40	0
3759069	99	52	9,14	cyclictest	3849138	-21	ntpq	10:20:25	1
3759069	99	52	43,6	cyclictest	0	-21	swapper/1	11:00:12	1
3759069	99	52	36,10	cyclictest	0	-21	swapper/1	11:30:33	1
3759068	99	52	36,9	cyclictest	0	-21	swapper/0	09:15:01	0
3759069	99	51	41,6	cyclictest	3794124	-21	munin-run	09:15:01	1
3759069	99	51	40,8	cyclictest	3759415	-21	sed	07:10:18	1
3759069	99	51	37,9	cyclictest	0	-21	swapper/1	07:35:30	1
3759068	99	51	44,5	cyclictest	3787304	-21	kworker/u4:16+events_unbound	09:00:41	0
3759069	99	50	42,6	cyclictest	3960973	-21	ntp_kernel_pll_	12:35:28	1
3759069	99	50	42,6	cyclictest	3820345	-21	ld	09:45:32	1
3759069	99	50	42,5	cyclictest	3920769	-21	ssh	11:46:38	1
3759069	99	50	41,6	cyclictest	3931071	-21	lockfile-remove	12:00:01	1
3759069	99	50	41,6	cyclictest	3899395	-21	grep	11:20:41	1
3759069	99	50	40,7	cyclictest	3879879	-21	kworker/u4:1+events_unbound	10:58:59	1
3759069	99	50	39,8	cyclictest	37	-21	kcompactd0	12:32:16	1
3759069	99	50	17,9	cyclictest	0	-21	swapper/1	11:15:35	1
3759068	99	50	43,5	cyclictest	3908769	-21	kworker/u4:9+events_unbound	11:36:17	0
3759068	99	50	28,6	cyclictest	0	-21	swapper/0	10:40:20	0
3759068	99	50	28,6	cyclictest	0	-21	swapper/0	10:40:20	0
3759068	99	50	1,40	cyclictest	3919664	-21	ntp_states	11:45:32	0
3759069	99	49	43,4	cyclictest	53	-21	kswapd0	12:20:11	1
3759069	99	49	42,5	cyclictest	3883529	-21	kworker/u4:5+events_unbound	11:11:04	1
3759069	99	49	41,6	cyclictest	3885880	-21	aten_r7power_en	11:05:17	1
3759069	99	49	41,6	cyclictest	3774210	-21	sendmail_mailqu	08:05:36	1
3759069	99	49	41,5	cyclictest	3784760	-21	kworker/u4:4+events_unbound	09:10:01	1
3759069	99	49	40,7	cyclictest	3940464	-21	diskmemload	12:10:34	1
3759069	99	49	36,10	cyclictest	3926837	-21	basename	11:55:01	1
3759069	99	49	11,12	cyclictest	3812015	-21	ntpq	09:35:29	1
3759068	99	49	42,4	cyclictest	3907574	-21	awk	11:30:41	0
3759068	99	49	41,5	cyclictest	3768641	-21	fschecks_time	07:45:21	0
3759068	99	49	39,8	cyclictest	3783153	-21	sshd	08:40:36	0
3759069	99	48	41,5	cyclictest	3759065	-21	cyclictest	09:25:33	1
3759069	99	48	40,5	cyclictest	3854656	-21	kworker/u4:14-xprtiod	10:31:09	1
3759069	99	48	39,6	cyclictest	3828961	-21	ls	09:55:43	1
3759069	99	48	38,6	cyclictest	3837060	-21	proc_pri	10:05:40	1
3759069	99	48	37,7	cyclictest	37	-21	kcompactd0	12:00:14	1
3759069	99	48	20,23	cyclictest	3778051	-21	awk	08:20:37	1
3759068	99	48	41,5	cyclictest	3953104	-21	timerandwakeup	12:25:39	0
3759068	99	48	41,5	cyclictest	3926839	-21	ssh	11:55:01	0
3759068	99	48	40,5	cyclictest	0	-21	swapper/0	07:40:25	0
3759068	99	48	39,6	cyclictest	3836295	-21	aten_r7power_vo	10:05:17	0
3759068	99	48	35,6	cyclictest	3950229	-21	kworker/u4:4+events_unbound	12:31:44	0
3759069	99	47	7,15	cyclictest	3952647	-21	ntpq	12:25:25	1
3759069	99	47	40,5	cyclictest	3832696	-21	ntp_kernel_pll_	10:00:28	1
3759069	99	47	40,5	cyclictest	3784760	-21	kworker/u4:4+events_unbound	08:50:38	1
3759069	99	47	38,6	cyclictest	3764419	-21	latency_hist	07:30:02	1
3759069	99	47	37,7	cyclictest	3823804	-21	diskmemload	09:50:16	1
3759069	99	47	36,9	cyclictest	3870157	-21	proc_pri	10:45:36	1
3759069	99	47	10,24	cyclictest	3802580	-21	modprobe	09:25:01	1
3759068	99	47	40,5	cyclictest	3871501	-21	kworker/u4:11+events_unbound	10:55:02	0
3759068	99	46	39,5	cyclictest	3777090	-21	kworker/u4:3+events_unbound	08:28:43	0
3759068	99	46	38,6	cyclictest	3871500	-21	kworker/u4:10+events_unbound	11:07:00	0
3759068	99	46	38,6	cyclictest	3777093	-21	kworker/u4:9+events_unbound	08:30:04	0
3759068	99	46	38,5	cyclictest	3904477	-21	sshd	11:27:08	0
3759068	99	46	36,7	cyclictest	3807524	-21	/usr/sbin/munin	09:30:25	0
3759068	99	46	36,6	cyclictest	0	-21	swapper/0	07:54:59	0
3759069	99	45	8,16	cyclictest	3917592	-21	ssh	11:43:21	1
3759069	99	45	5,15	cyclictest	3842797	-21	ssh	10:12:49	1
3759069	99	45	38,5	cyclictest	3782239	-21	basename	08:40:00	1
3759069	99	45	13,11	cyclictest	0	-21	swapper/1	09:40:12	1
3759069	99	45	13,11	cyclictest	0	-21	swapper/1	09:40:11	1
3759068	99	45	39,5	cyclictest	3821677	-21	kworker/u4:5+events_unbound	09:52:46	0
3759068	99	45	38,5	cyclictest	3830059	-21	kworker/u4:8+events_unbound	10:17:00	0
3759068	99	45	38,5	cyclictest	3781799	-21	open_files	08:35:35	0
3759068	99	45	38,5	cyclictest	3777504	-21	sed	08:20:18	0
3759068	99	45	38,5	cyclictest	3769426	-21	kworker/u4:3+events_unbound	08:00:59	0
3759068	99	45	37,6	cyclictest	3777089	-21	kworker/u4:2+events_unbound	09:06:01	0
3759068	99	45	36,7	cyclictest	3812470	-21	unixbench-2d	09:35:40	0
3759069	99	44	6,10	cyclictest	3856062	-21	ssh	10:29:17	1
3759069	99	44	37,5	cyclictest	3759065	-21	cyclictest	08:25:33	1
3759069	99	44	37,5	cyclictest	3759065	-21	cyclictest	08:15:30	1
3759069	99	44	32,9	cyclictest	0	-21	swapper/1	09:15:23	1
3759068	99	44	37,5	cyclictest	3765585	-21	kworker/u4:5+events_unbound	08:15:03	0
3759068	99	44	35,7	cyclictest	3770959	-21	aten_r7power_en	07:55:16	0
3759068	99	44	34,8	cyclictest	3785029	-21	aten_r7power_en	08:50:17	0
3759068	99	44	34,8	cyclictest	3766935	-21	latency_hist	07:40:00	0
3759069	99	43	9,11	cyclictest	0	-21	swapper/1	09:00:36	1
3759069	99	43	36,5	cyclictest	3783950	-21	fschecks_count	08:45:20	1
3759069	99	43	34,6	cyclictest	0	-21	swapper/1	08:55:39	1
3759069	99	43	33,7	cyclictest	3783518	-21	idleruntime-cro	08:45:00	1
3759069	99	43	33,6	cyclictest	0	-21	swapper/1	08:00:22	1
3759069	99	43	29,11	cyclictest	0	-21	swapper/1	07:40:19	1
3759069	99	43	25,15	cyclictest	0	-21	swapper/1	07:20:41	1
3759068	99	43	37,4	cyclictest	3775857	-21	latency_hist	08:15:01	0
3759068	99	43	15,25	cyclictest	0	-21	swapper/0	07:20:10	0
3759069	99	42	33,7	cyclictest	3769760	-21	aten_r7power_vo	07:50:17	1
3759069	99	42	32,7	cyclictest	0	-21	swapper/1	07:55:37	1
3759068	99	42	34,5	cyclictest	3774204	-21	sendmail_mailqu	08:05:35	0
3759069	99	41	36,4	cyclictest	27	1	ktimers/1	07:47:11	1
3759069	99	41	32,7	cyclictest	3764703	-21	df_abs	07:30:22	1
3759069	99	41	30,8	cyclictest	3775219	-21	kernelversion	08:10:21	1
3759069	99	31	3,22	cyclictest	3759046	-21	munin-run	07:10:00	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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