OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 Fri Aug 14, 2026 00:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3742518	99	122	103,7	cyclictest	3896475	-21	kworker/u4:7+events_unbound	23:27:50	0
3742519	99	106	99,5	cyclictest	3945357	-21	kworker/u4:11+events_unbound	00:22:55	1
3742519	99	106	99,5	cyclictest	3945357	-21	kworker/u4:11+events_unbound	00:22:54	1
3742518	99	103	95,6	cyclictest	3833959	-21	kworker/u4:8+events_unbound	22:17:37	0
3742519	99	99	81,6	cyclictest	3789292	-21	kworker/u4:6+events_unbound	21:27:26	1
3742519	99	99	73,20	cyclictest	0	-21	swapper/1	21:35:20	1
3742519	99	98	89,6	cyclictest	3743750	-21	kworker/u4:8+events_unbound	19:37:02	1
3742518	99	98	90,6	cyclictest	3798475	-21	kworker/u4:10+events_unbound	21:42:28	0
3742518	99	97	88,6	cyclictest	3887447	-21	kworker/u4:1+events_unbound	00:27:58	0
3742519	99	95	83,6	cyclictest	3730120	-21	kworker/u4:4+events_unbound	19:57:07	1
3742518	99	95	77,8	cyclictest	3843016	-21	kworker/u4:1+events_unbound	22:32:41	0
3742518	99	95	74,8	cyclictest	3755402	-21	kworker/u4:1+events_unbound	20:12:09	0
3742518	99	89	82,5	cyclictest	3896477	-21	kworker/u4:8+events_unbound	23:42:51	0
3742518	99	88	81,5	cyclictest	3936309	-21	kworker/u4:5+events_unbound	00:12:55	0
3742518	99	86	72,6	cyclictest	3855897	-21	kworker/u4:10+events_unbound	23:12:46	0
3742518	99	85	79,4	cyclictest	3861060	-21	kworker/u4:12+events_unbound	22:47:44	0
3742518	99	83	75,6	cyclictest	3789292	-21	kworker/u4:6+events_unbound	21:32:26	0
3742518	99	83	75,6	cyclictest	3789292	-21	kworker/u4:6+events_unbound	21:32:26	0
3742519	99	82	74,6	cyclictest	3861061	-21	kworker/u4:13+events_unbound	22:57:44	1
3742518	99	82	75,5	cyclictest	3896480	-21	kworker/u4:11+events_unbound	23:32:49	0
3742518	99	81	74,5	cyclictest	3755402	-21	kworker/u4:1+events_unbound	20:07:08	0
3742518	99	81	74,5	cyclictest	3755402	-21	kworker/u4:1+events_unbound	20:07:08	0
3742518	99	79	72,5	cyclictest	3765636	-21	kworker/u4:2+events_unbound	21:02:24	0
3742518	99	77	70,5	cyclictest	3861060	-21	kworker/u4:12+events_unbound	23:07:44	0
3742519	99	75	68,5	cyclictest	3852009	-21	kworker/u4:0+events_unbound	23:02:44	1
3742518	99	73	66,5	cyclictest	3763088	-21	kworker/u4:16+events_unbound	20:27:14	0
3742518	99	73	66,5	cyclictest	3763088	-21	kworker/u4:16+events_unbound	20:27:14	0
3742518	99	72	51,7	cyclictest	3861061	-21	kworker/u4:13+events_unbound	23:00:01	0
3742519	99	71	56,5	cyclictest	3812083	-21	kworker/u4:7+events_unbound	21:52:32	1
3742518	99	71	62,6	cyclictest	3814140	-21	ssh	21:55:11	0
3742518	99	70	62,6	cyclictest	3761817	-21	kworker/u4:8+events_unbound	20:32:16	0
3742518	99	69	61,6	cyclictest	3730121	-21	kworker/u4:6+events_unbound	20:42:17	0
3742519	99	68	57,8	cyclictest	3905493	-21	kworker/u4:2+events_unbound	23:47:52	1
3742518	99	68	59,6	cyclictest	3891333	-21	kworker/u4:3+events_unbound	23:22:47	0
3742519	99	65	58,5	cyclictest	3833961	-21	kworker/u4:12+events_unbound	22:22:38	1
3742518	99	64	51,8	cyclictest	3730121	-21	kworker/u4:6-rpciod	19:25:12	0
3742518	99	64	47,8	cyclictest	3931171	-21	kworker/u4:10+events_unbound	00:17:02	0
3742519	99	63	46,5	cyclictest	3953697	-21	kworker/u4:20+events_unbound	00:32:57	1
3742518	99	63	55,6	cyclictest	3738814	-21	kworker/u4:2+events_unbound	19:12:01	0
3742518	99	63	45,5	cyclictest	3730120	-21	kworker/u4:4+events_unbound	19:20:15	0
3742518	99	62	51,8	cyclictest	3863097	-21	wget	22:50:15	0
3742519	99	61	53,6	cyclictest	3936306	-21	kworker/u4:2+events_unbound	00:17:56	1
3742519	99	60	47,8	cyclictest	3802011	-21	/usr/sbin/munin	21:40:41	1
3742518	99	60	53,5	cyclictest	3769472	-21	kworker/u4:10+events_unbound	20:55:01	0
3742518	99	60	51,6	cyclictest	0	-21	swapper/0	21:10:02	0
3742519	99	59	53,4	cyclictest	3761817	-21	kworker/u4:8+events_unbound	20:34:59	1
3742518	99	59	52,5	cyclictest	3768202	-21	kworker/u4:7+events_unbound	20:52:20	0
3742518	99	59	48,7	cyclictest	3797636	-21	sed	21:35:46	0
3742519	99	58	49,7	cyclictest	3743750	-21	kworker/u4:8+events_unbound	19:35:01	1
3742519	99	58	38,6	cyclictest	3546458	-21	kworker/u4:5+events_unbound	21:12:25	1
3742518	99	58	50,5	cyclictest	15	1	ktimers/0	23:56:54	0
3742518	99	58	46,9	cyclictest	53	-21	kswapd0	23:45:11	0
3742519	99	57	49,6	cyclictest	3852010	-21	kworker/u4:2+events_unbound	22:37:42	1
3742519	99	57	49,5	cyclictest	3755401	-21	kworker/u4:0+events_unbound	20:40:01	1
3742519	99	57	48,7	cyclictest	317	-21	systemd-journal	23:12:44	1
3742519	99	57	48,6	cyclictest	3843018	-21	kworker/u4:4+events_unbound	22:50:01	1
3742518	99	57	46,9	cyclictest	3742515	-21	cyclictest	21:14:25	0
3742518	99	57	44,7	cyclictest	3816562	-21	kworker/u4:0-rpciod	22:05:49	0
3742519	99	56	41,12	cyclictest	0	-21	swapper/1	21:45:17	1
3742518	99	56	49,5	cyclictest	3750306	-21	kworker/u4:16+events_unbound	19:37:46	0
3742518	99	56	42,6	cyclictest	3852010	-21	kworker/u4:2+events_unbound	22:42:43	0
3742518	99	56	3,11	cyclictest	3943578	-21	sshd	00:20:32	0
3742518	99	56	3,11	cyclictest	3943578	-21	sshd	00:20:32	0
3742519	99	55	37,6	cyclictest	3936309	-21	kworker/u4:5+events_unbound	00:35:35	1
3742518	99	55	46,6	cyclictest	3930526	-21	/usr/sbin/munin	00:05:42	0
3742518	99	55	45,7	cyclictest	0	-21	swapper/0	21:28:06	0
3742518	99	54	8,40	cyclictest	3956771	-21	rm	00:35:29	0
3742518	99	54	44,6	cyclictest	3782582	-21	latency_hist	21:20:02	0
3742518	99	54	31,21	cyclictest	3747989	-21	aten2__	19:30:20	0
3742519	99	52	45,5	cyclictest	3916834	-21	kernelversion	23:50:22	1
3742518	99	52	45,5	cyclictest	3951655	-21	/usr/sbin/munin	00:30:15	0
3742518	99	52	44,6	cyclictest	3806455	-21	/usr/sbin/munin	21:45:42	0
3742518	99	52	43,5	cyclictest	3760545	-21	kworker/u4:4	20:20:01	0
3742519	99	51	43,6	cyclictest	3759250	-21	kworker/u4:12+events_unbound	21:15:38	1
3742518	99	51	43,5	cyclictest	3844978	-21	apt-get	22:30:00	0
3742518	99	51	39,7	cyclictest	256	50	irq/23-42890000.ethernet	22:10:35	0
3742518	99	51	26,22	cyclictest	0	-21	swapper/0	21:50:44	0
3742518	99	50	4,44	cyclictest	0	-21	swapper/0	20:00:27	0
3742518	99	50	42,6	cyclictest	3922828	-21	kworker/u4:2+events_unbound	00:00:04	0
3742518	99	50	39,7	cyclictest	3849994	-21	/usr/sbin/munin	22:35:21	0
3742518	99	50	35,13	cyclictest	3821090	-21	kworker/u4:9+events_unbound	22:04:46	0
3742519	99	49	41,6	cyclictest	3762756	-21	sendmail_mailqu	20:25:35	1
3742519	99	49	41,6	cyclictest	3762756	-21	sendmail_mailqu	20:25:35	1
3742519	99	49	41,5	cyclictest	3792797	-21	sendmail_mailqu	21:30:39	1
3742519	99	49	41,5	cyclictest	3792797	-21	sendmail_mailqu	21:30:38	1
3742519	99	49	40,6	cyclictest	3742515	-21	cyclictest	22:30:14	1
3742519	99	49	39,7	cyclictest	0	-21	swapper/1	22:05:27	1
3742518	99	49	39,7	cyclictest	3903955	-21	mailstats	23:35:38	0
3742519	99	48	41,5	cyclictest	3864260	-21	grep	22:50:41	1
3742519	99	48	40,6	cyclictest	3747672	-21	systemd	19:27:01	1
3742519	99	48	30,14	cyclictest	3546458	-21	kworker/u4:5+events_unbound	20:40:34	1
3742518	99	48	37,7	cyclictest	3837538	-21	timerandwakeup	22:20:40	0
3742518	99	48	29,17	cyclictest	3745030	-21	kworker/u4:11-xprtiod	19:45:00	0
3742518	99	48	28,17	cyclictest	0	-21	swapper/0	23:00:40	0
3742518	99	48	20,23	cyclictest	0	-21	swapper/0	20:00:00	0
3742519	99	47	42,4	cyclictest	3910039	-21	kworker/u4:13+events_unbound	23:55:07	1
3742519	99	47	41,4	cyclictest	3828573	-21	switchtime	22:10:39	1
3742519	99	47	40,5	cyclictest	3861060	-21	kworker/u4:12+events_unbound	23:30:00	1
3742519	99	47	39,6	cyclictest	3787001	-21	latency_hist	21:25:01	1
3742519	99	46	38,5	cyclictest	3885426	-21	cpu	23:15:17	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17