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 Wed Nov 26, 2025 00:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3631516	99	130	122,6	cyclictest	3717146	-21	kworker/u4:16+events_unbound	22:37:34	0
3631516	99	129	120,6	cyclictest	3650803	-21	kworker/u4:9+events_unbound	20:22:09	0
3631516	99	117	109,6	cyclictest	3776906	-21	kworker/u4:1+events_unbound	23:47:50	0
3631516	99	114	105,6	cyclictest	3687066	-21	kworker/u4:10+events_unbound	21:42:25	0
3631516	99	111	104,5	cyclictest	3632739	-21	kworker/u4:2+events_unbound	19:32:04	0
3631516	99	111	104,5	cyclictest	3632739	-21	kworker/u4:2+events_unbound	19:32:04	0
3631517	99	102	94,6	cyclictest	3658516	-21	kworker/u4:3+events_unbound	20:52:15	1
3631517	99	100	94,4	cyclictest	3680136	-21	kworker/u4:6+events_unbound	22:12:31	1
3631516	99	100	92,6	cyclictest	3618921	-21	kworker/u4:14+events_unbound	19:47:03	0
3631517	99	98	92,4	cyclictest	3780698	-21	kworker/u4:3+events_unbound	00:17:58	1
3631516	99	98	91,5	cyclictest	3632738	-21	kworker/u4:1+events_unbound	20:42:14	0
3631516	99	95	87,6	cyclictest	3792434	-21	kworker/u4:6+events_unbound	00:22:58	0
3631517	99	94	86,5	cyclictest	3750880	-21	kworker/u4:4+events_unbound	23:17:42	1
3631517	99	92	83,7	cyclictest	3784556	-21	kworker/u4:8+events_unbound	00:02:53	1
3631516	99	92	84,6	cyclictest	3604711	-21	kworker/u4:19+events_unbound	19:26:58	0
3631516	99	89	80,6	cyclictest	3643054	-21	kworker/u4:0+events_unbound	19:52:05	0
3631517	99	85	78,5	cyclictest	3713422	-21	kworker/u4:8+events_unbound	22:17:32	1
3631517	99	85	75,6	cyclictest	3698278	-21	kworker/u4:16+events_unbound	22:07:28	1
3631517	99	83	75,6	cyclictest	3694545	-21	kworker/u4:3+events_unbound	22:52:39	1
3631517	99	83	66,5	cyclictest	3672496	-21	kworker/u4:13+events_unbound	21:27:22	1
3631517	99	82	74,6	cyclictest	3728503	-21	kworker/u4:9+events_unbound	22:47:37	1
3631517	99	82	74,6	cyclictest	3618921	-21	kworker/u4:14+events_unbound	21:02:17	1
3631517	99	82	74,6	cyclictest	3618921	-21	kworker/u4:14+events_unbound	21:02:16	1
3631517	99	81	64,6	cyclictest	3668613	-21	kworker/u4:12+events_unbound	21:17:19	1
3631517	99	79	71,6	cyclictest	3758447	-21	kworker/u4:14+events_unbound	23:37:49	1
3631517	99	78	71,5	cyclictest	3754089	-21	kworker/u4:10+events_unbound	23:27:45	1
3631516	99	77	69,6	cyclictest	3799514	-21	kworker/u4:12+events_unbound	00:12:54	0
3631516	99	77	69,6	cyclictest	3644336	-21	kworker/u4:6+events_unbound	19:57:07	0
3631517	99	75	66,7	cyclictest	3680134	-21	kworker/u4:0+events_unbound	21:32:22	1
3631517	99	75	66,7	cyclictest	3680134	-21	kworker/u4:0+events_unbound	21:32:21	1
3631516	99	74	63,8	cyclictest	3750880	-21	kworker/u4:4+events_unbound	23:22:43	0
3631516	99	73	66,5	cyclictest	3747171	-21	kworker/u4:7+events_unbound	23:17:44	0
3631517	99	72	64,6	cyclictest	3687066	-21	kworker/u4:10+events_unbound	21:57:27	1
3631516	99	71	63,6	cyclictest	3762305	-21	kworker/u4:0+events_unbound	23:30:03	0
3631517	99	70	60,7	cyclictest	3634022	-21	kworker/u4:6+events_unbound	19:22:02	1
3631517	99	69	60,6	cyclictest	3754089	-21	kworker/u4:10+events_unbound	23:15:00	1
3631516	99	69	63,4	cyclictest	15	1	ktimers/0	21:06:43	0
3631516	99	69	56,10	cyclictest	3668873	-21	sshd	21:17:19	0
3631517	99	68	60,6	cyclictest	3618921	-21	kworker/u4:14+events_unbound	19:17:02	1
3631516	99	68	6,55	cyclictest	3693565	-21	ssh	21:50:32	0
3631516	99	66	57,6	cyclictest	3792434	-21	kworker/u4:6+xprtiod	00:30:10	0
3631517	99	64	55,6	cyclictest	3604709	-21	kworker/u4:18+events_unbound	20:02:07	1
3631516	99	64	57,5	cyclictest	3621481	-21	kworker/u4:15+events_unbound	20:32:13	0
3631517	99	63	56,5	cyclictest	3780696	-21	kworker/u4:0+events_unbound	00:00:01	1
3631516	99	63	56,5	cyclictest	3780698	-21	kworker/u4:3+events_unbound	00:25:04	0
3631517	99	62	57,3	cyclictest	3632740	-21	kworker/u4:3+events_unbound	20:32:11	1
3631517	99	62	55,5	cyclictest	3680135	-21	kworker/u4:4+events_unbound	21:55:01	1
3631517	99	62	54,5	cyclictest	3637904	-21	kworker/u4:13+events_unbound	20:15:01	1
3631516	99	62	55,5	cyclictest	3637905	-21	kworker/u4:16+events_unbound	20:50:03	0
3631516	99	62	47,9	cyclictest	3674066	-21	modprobe	21:25:00	0
3631516	99	61	54,6	cyclictest	3617637	-21	kworker/u4:11+events_unbound	19:20:02	0
3631516	99	61	49,6	cyclictest	3618921	-21	kworker/u4:14+events_unbound	21:55:02	0
3631516	99	61	33,24	cyclictest	0	-21	swapper/0	20:50:00	0
3631517	99	60	52,6	cyclictest	3650803	-21	kworker/u4:9+events_unbound	20:37:12	1
3631517	99	59	52,5	cyclictest	3724715	-21	kworker/u4:5+events_unbound	22:32:33	1
3631517	99	59	51,5	cyclictest	3635342	-21	kworker/u4:9+events_unbound	19:40:01	1
3631516	99	59	46,10	cyclictest	53	-21	kswapd0	23:10:18	0
3631516	99	58	51,5	cyclictest	3698276	-21	kworker/u4:12+events_unbound	22:40:02	0
3631517	99	57	51,4	cyclictest	3698276	-21	kworker/u4:12+events_unbound	22:42:36	1
3631517	99	57	3,38	cyclictest	3745909	-21	ssh	23:00:30	1
3631516	99	57	50,5	cyclictest	3750881	-21	kworker/u4:8+events_unbound	23:07:40	0
3631516	99	57	50,5	cyclictest	3728501	-21	kworker/u4:6+events_unbound	22:45:02	0
3631517	99	56	49,5	cyclictest	3694545	-21	kworker/u4:3+events_unbound	22:59:59	1
3631516	99	56	49,5	cyclictest	3618921	-21	kworker/u4:14+events_unbound	20:25:03	0
3631516	99	56	48,5	cyclictest	0	-21	swapper/0	23:50:11	0
3631517	99	55	48,5	cyclictest	3621481	-21	kworker/u4:15+events_unbound	19:15:01	1
3631517	99	55	45,8	cyclictest	3662491	-21	systemd	21:07:18	1
3631517	99	54	47,5	cyclictest	1047	-21	sshd	20:42:12	1
3631517	99	54	45,7	cyclictest	3807153	-21	systemd	00:22:58	1
3631516	99	54	47,5	cyclictest	3698276	-21	kworker/u4:12+events_unbound	22:11:37	0
3631517	99	53	45,6	cyclictest	3621481	-21	kworker/u4:15+events_unbound	21:37:24	1
3631517	99	53	44,7	cyclictest	3810452	-21	sd-accept	00:27:59	1
3631517	99	53	44,7	cyclictest	379	-21	dbus-daemon	21:47:25	1
3631517	99	53	40,5	cyclictest	3645644	-21	kworker/u4:7+events_unbound	21:22:21	1
3631517	99	52	43,6	cyclictest	3782879	-21	/usr/sbin/munin	23:50:20	1
3631517	99	52	42,6	cyclictest	3775031	-21	dpkg	23:40:14	1
3631516	99	52	47,3	cyclictest	257	50	irq/23-42890000.ethernet	22:25:31	0
3631516	99	52	45,5	cyclictest	3701343	-21	timerandwakeup	22:00:41	0
3631516	99	52	28,22	cyclictest	3689530	-21	fschecks_time	21:45:21	0
3631517	99	51	35,6	cyclictest	3799514	-21	kworker/u4:12+events_unbound	00:12:36	1
3631516	99	51	43,5	cyclictest	3723388	-21	/usr/sbin/munin	22:30:42	0
3631516	99	51	32,17	cyclictest	3790667	-21	fschecks_time	00:00:25	0
3631517	99	50	42,6	cyclictest	3637905	-21	kworker/u4:16+events_unbound	20:47:13	1
3631517	99	50	39,5	cyclictest	3713422	-21	kworker/u4:8+events_unbound	22:25:01	1
3631516	99	50	39,7	cyclictest	0	-21	swapper/0	20:59:59	0
3631516	99	50	28,5	cyclictest	0	-21	swapper/0	21:00:36	0
3631516	99	50	28,5	cyclictest	0	-21	swapper/0	21:00:36	0
3631517	99	49	41,5	cyclictest	3644156	-21	timerwakeupswit	19:55:36	1
3631516	99	49	44,3	cyclictest	3694545	-21	kworker/u4:3+events_unbound	22:52:37	0
3631516	99	49	42,5	cyclictest	3739615	-21	kworker/u4:1+events_unbound	23:00:02	0
3631516	99	49	31,16	cyclictest	3715843	-21	ntpq	22:20:32	0
3631517	99	48	42,4	cyclictest	0	-21	swapper/1	21:10:17	1
3631517	99	48	39,7	cyclictest	3749136	-21	/usr/sbin/munin	23:05:22	1
3631517	99	48	35,5	cyclictest	3637905	-21	kworker/u4:16+events_unbound	20:57:16	1
3631516	99	48	39,7	cyclictest	3638412	-21	fschecks_time	19:35:20	0
3631517	99	47	40,5	cyclictest	3760065	-21	aten2__	23:20:17	1
3631517	99	47	36,7	cyclictest	0	-21	swapper/1	22:00:30	1
3631516	99	47	39,5	cyclictest	3678557	-21	grep	21:30:24	0
3631516	99	47	39,5	cyclictest	3678557	-21	grep	21:30:24	0
3631517	99	46	39,5	cyclictest	3650853	-21	munin-plugin-st	20:25:00	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