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 Tue Apr 07, 2026 00:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3794803	99	146	112,19	cyclictest	0	-21	swapper/0	19:10:01	0
3794803	99	98	90,6	cyclictest	3823300	-21	kworker/u4:6+events_unbound	21:17:38	0
3794804	99	90	83,5	cyclictest	3995349	-21	kworker/u4:12+events_unbound	00:23:14	1
3794804	99	77	43,30	cyclictest	3794739	-21	kworker/u4:2-rpciod	22:09:59	1
3794804	99	76	38,10	cyclictest	3954834	-21	mailstats	23:35:40	1
3794803	99	74	65,6	cyclictest	3921106	-21	kworker/u4:4+events_unbound	22:58:02	0
3794803	99	73	43,24	cyclictest	3975666	-21	cpu	00:00:16	0
3794803	99	72	59,8	cyclictest	3953631	-21	latency_hist	23:35:01	0
3794803	99	70	64,4	cyclictest	3917349	-21	kworker/u4:1+events_unbound	22:53:01	0
3794803	99	68	60,6	cyclictest	3850610	-21	kworker/u4:9+events_unbound	21:42:47	0
3794803	99	66	58,6	cyclictest	3899462	-21	kworker/u4:9+events_unbound	22:32:57	0
3794803	99	65	57,6	cyclictest	3964555	-21	kworker/u4:14+events_unbound	00:28:15	0
3794803	99	65	57,6	cyclictest	3964555	-21	kworker/u4:14+events_unbound	00:28:15	0
3794804	99	62	50,9	cyclictest	53	-21	kswapd0	00:40:00	1
3794804	99	61	51,6	cyclictest	0	-21	swapper/1	23:55:42	1
3794804	99	60	51,7	cyclictest	3881440	-21	kworker/u4:9+events_unbound	22:14:00	1
3794803	99	60	52,6	cyclictest	3811719	-21	kworker/u4:3+events_unbound	20:12:30	0
3794803	99	59	51,6	cyclictest	3864105	-21	kworker/u4:0+events_unbound	22:12:53	0
3794803	99	59	51,6	cyclictest	3850610	-21	kworker/u4:9+events_unbound	21:47:48	0
3794803	99	59	39,18	cyclictest	398	-21	systemd-logind	22:22:54	0
3794803	99	59	36,7	cyclictest	3805718	-21	fschecks_count	19:50:23	0
3794804	99	58	50,6	cyclictest	3894991	-21	kworker/u4:5+events_unbound	22:27:56	1
3794804	99	58	50,6	cyclictest	3802593	-21	kworker/u4:7+events_unbound	19:57:26	1
3794803	99	58	50,6	cyclictest	4007888	-21	kworker/u4:7+events_unbound	00:38:17	0
3794803	99	58	50,6	cyclictest	3846089	-21	kworker/u4:4+events_unbound	21:32:41	0
3794803	99	58	48,7	cyclictest	398	-21	systemd-logind	23:53:11	0
3794804	99	57	48,6	cyclictest	3864105	-21	kworker/u4:0+events_unbound	22:17:54	1
3794803	99	56	48,6	cyclictest	3819406	-21	kworker/u4:14+events_unbound	20:52:34	0
3794803	99	56	46,7	cyclictest	3818108	-21	kworker/u4:7+events_unbound	20:37:33	0
3794804	99	55	48,5	cyclictest	3810934	-21	fschecks_count	20:10:18	1
3794804	99	55	47,6	cyclictest	3806520	-21	kworker/u4:3+events_unbound	19:52:25	1
3794804	99	55	46,7	cyclictest	53	-21	kswapd0	23:20:01	1
3794804	99	55	45,7	cyclictest	3811720	-21	kworker/u4:8+events_unbound	20:27:33	1
3794804	99	55	45,7	cyclictest	3811720	-21	kworker/u4:8+events_unbound	20:27:32	1
3794803	99	55	46,6	cyclictest	3809181	-21	kworker/u4:19+events_unbound	20:02:28	0
3794803	99	55	43,9	cyclictest	3843792	-21	ls	21:30:01	0
3794804	99	54	45,7	cyclictest	398	-21	systemd-logind	21:47:47	1
3794804	99	54	45,6	cyclictest	3938810	-21	kworker/u4:2+events_unbound	00:08:13	1
3794804	99	54	43,9	cyclictest	3846089	-21	kworker/u4:4+events_unbound	21:35:10	1
3794804	99	54	32,19	cyclictest	3910622	-21	basename	22:45:21	1
3794803	99	54	46,6	cyclictest	0	-21	swapper/0	22:35:29	0
3794803	99	54	45,7	cyclictest	3913225	-21	sshd	22:48:00	0
3794803	99	54	44,7	cyclictest	3794739	-21	kworker/u4:2+events_unbound	20:17:29	0
3794803	99	54	36,14	cyclictest	53	-21	kswapd0	23:55:11	0
3794803	99	53	48,3	cyclictest	3802593	-21	kworker/u4:7+events_unbound	19:42:24	0
3794803	99	53	46,5	cyclictest	3980929	-21	grep	00:05:39	0
3794803	99	53	45,6	cyclictest	3995349	-21	kworker/u4:12+events_unbound	00:23:18	0
3794804	99	52	46,4	cyclictest	3843801	-21	latency_hist	21:30:01	1
3794804	99	52	44,6	cyclictest	3921110	-21	kworker/u4:13+events_unbound	23:08:05	1
3794804	99	52	44,6	cyclictest	3801241	-21	kworker/u4:1+events_unbound	20:42:33	1
3794804	99	52	42,7	cyclictest	3941848	-21	sendmail_mailqu	23:20:37	1
3794803	99	52	43,7	cyclictest	3990933	-21	kworker/u4:2+events_unbound	00:18:15	0
3794803	99	52	41,8	cyclictest	53	-21	kswapd0	23:20:32	0
3794803	99	52	38,10	cyclictest	3932154	-21	apt-get	23:10:11	0
3794804	99	51	48,2	cyclictest	3985892	-21	kworker/u4:7+events_unbound	00:13:14	1
3794804	99	51	48,2	cyclictest	3985892	-21	kworker/u4:7+events_unbound	00:13:14	1
3794804	99	51	42,7	cyclictest	378	-21	dbus-daemon	00:03:12	1
3794804	99	51	41,8	cyclictest	3804403	-21	fschecks_time	19:45:19	1
3794803	99	51	43,6	cyclictest	3801244	-21	kworker/u4:6+events_unbound	20:22:30	0
3794803	99	51	31,17	cyclictest	0	-21	swapper/0	21:05:00	0
3794804	99	50	42,6	cyclictest	3866689	-21	if_err_eth0	21:55:21	1
3794804	99	50	42,6	cyclictest	3801630	-21	aten_r7power_po	19:35:20	1
3794803	99	50	42,5	cyclictest	3958268	-21	basename	23:40:15	0
3794803	99	50	27,20	cyclictest	3809179	-21	kworker/u4:17+rpciod	20:40:15	0
3794804	99	49	41,6	cyclictest	3968006	-21	unixbench-2d	23:50:39	1
3794804	99	49	41,5	cyclictest	0	-21	swapper/1	21:50:11	1
3794803	99	49	40,7	cyclictest	3799980	-21	cron	19:30:00	0
3794803	99	49	32,14	cyclictest	3888013	-21	idleruntime-cro	22:20:00	0
3794804	99	48	41,5	cyclictest	3817842	-21	switchtime	20:35:35	1
3794804	99	48	40,6	cyclictest	3990934	-21	kworker/u4:4+events_unbound	00:33:16	1
3794804	99	48	40,6	cyclictest	3919411	-21	df_abs	22:55:22	1
3794804	99	48	40,5	cyclictest	3816507	-21	sendmail_mailqu	20:30:34	1
3794804	99	48	39,6	cyclictest	0	-21	swapper/1	22:35:31	1
3794803	99	48	37,9	cyclictest	3801375	-21	latency_hist	19:35:01	0
3794803	99	48	28,17	cyclictest	0	-21	swapper/0	23:00:37	0
3794803	99	48	28,17	cyclictest	0	-21	swapper/0	23:00:37	0
3794804	99	47	38,6	cyclictest	3881440	-21	kworker/u4:9-rpciod	22:20:34	1
3794804	99	47	38,6	cyclictest	0	-21	swapper/1	22:40:16	1
3794804	99	47	36,8	cyclictest	3797558	-21	latency_hist	19:20:01	1
3794804	99	47	29,6	cyclictest	3794739	-21	kworker/u4:2+events_unbound	22:02:51	1
3794803	99	47	40,5	cyclictest	3871284	-21	ntpq	22:00:26	0
3794803	99	47	39,5	cyclictest	3822520	-21	fschecks_time	20:55:18	0
3794803	99	47	38,6	cyclictest	3938816	-21	kworker/u4:9+events_unbound	23:18:53	0
3794804	99	46	40,4	cyclictest	3923524	-21	cut	23:00:15	1
3794804	99	46	40,4	cyclictest	3923524	-21	cut	23:00:15	1
3794804	99	46	39,5	cyclictest	3831026	-21	fschecks_time	21:15:20	1
3794804	99	46	39,5	cyclictest	3795233	-21	df_abs	19:10:21	1
3794804	99	46	36,8	cyclictest	3959291	-21	/usr/sbin/munin	23:40:39	1
3794804	99	46	36,8	cyclictest	3809741	-21	gltestperf	20:05:20	1
3794804	99	46	35,9	cyclictest	3932895	-21	ssh	23:10:27	1
3794804	99	46	33,5	cyclictest	0	-21	swapper/1	00:25:34	1
3794804	99	46	33,5	cyclictest	0	-21	swapper/1	00:25:34	1
3794803	99	46	39,5	cyclictest	3963453	-21	/usr/sbin/munin	23:45:36	0
3794803	99	46	39,5	cyclictest	3835448	-21	fschecks_count	21:20:21	0
3794803	99	46	36,7	cyclictest	3804591	-21	kernelversion	19:45:21	0
3794803	99	46	34,8	cyclictest	0	-21	swapper/0	21:50:33	0
3794803	99	46	23,21	cyclictest	3816061	-21	fschecks_time	20:30:18	0
3794804	99	45	38,5	cyclictest	3819914	-21	sshd	20:45:21	1
3794804	99	45	37,6	cyclictest	3854199	-21	unixbench_singl	21:40:40	1
3794804	99	45	37,6	cyclictest	3794739	-21	kworker/u4:2+events_unbound	19:32:22	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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