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 Thu Sep 03, 2026 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2024012	99	159	144,11	cyclictest	2026506	-21	kworker/u4:12+events_unbound	07:25:09	0
2024012	99	126	116,8	cyclictest	2038199	-21	kworker/u4:1+events_unbound	08:50:36	0
2024013	99	112	98,5	cyclictest	2116549	-21	kworker/u4:0+events_unbound	10:20:48	1
2024013	99	112	98,5	cyclictest	2116549	-21	kworker/u4:0+events_unbound	10:20:48	1
2024012	99	110	100,7	cyclictest	2093469	-21	kworker/u4:10+events_unbound	10:05:47	0
2024012	99	107	100,5	cyclictest	2166111	-21	kworker/u4:5+events_unbound	11:15:55	0
2024013	99	103	96,5	cyclictest	2138902	-21	kworker/u4:6+events_unbound	10:50:53	1
2024013	99	99	92,5	cyclictest	2147931	-21	kworker/u4:17+events_unbound	11:30:58	1
2024013	99	95	86,7	cyclictest	2029171	-21	kworker/u4:16+events_unbound	07:50:15	1
2024012	99	95	88,5	cyclictest	2038206	-21	kworker/u4:8+events_unbound	08:30:29	0
2024013	99	93	85,6	cyclictest	2066435	-21	kworker/u4:17+events_unbound	09:30:42	1
2024013	99	93	85,6	cyclictest	2066435	-21	kworker/u4:17+events_unbound	09:30:42	1
2024012	99	92	82,7	cyclictest	2020337	-21	kworker/u4:0+events_unbound	07:40:13	0
2024012	99	91	78,5	cyclictest	2232560	-21	kworker/u4:1+events_unbound	12:31:03	0
2024012	99	90	80,8	cyclictest	2053620	-21	kworker/u4:12+events_unbound	09:25:41	0
2024012	99	89	76,5	cyclictest	2197078	-21	kworker/u4:0+events_unbound	12:21:03	0
2024012	99	89	76,5	cyclictest	2197078	-21	kworker/u4:0+events_unbound	12:21:03	0
2024013	99	88	82,4	cyclictest	2039478	-21	kworker/u4:12+events_unbound	08:15:27	1
2024012	99	80	72,6	cyclictest	2080300	-21	kworker/u4:2+events_unbound	09:55:45	0
2024012	99	77	70,5	cyclictest	2111933	-21	kworker/u4:5+events_unbound	10:30:49	0
2024012	99	77	68,7	cyclictest	2080303	-21	kworker/u4:5+events_unbound	09:40:44	0
2024013	99	76	69,5	cyclictest	2054892	-21	kworker/u4:4+events_unbound	09:10:38	1
2024013	99	76	69,5	cyclictest	2040746	-21	kworker/u4:15+events_unbound	08:20:27	1
2024013	99	74	67,5	cyclictest	2020337	-21	kworker/u4:0+events_unbound	07:15:08	1
2024013	99	74	60,6	cyclictest	2023943	-21	kworker/u4:7+events_unbound	07:35:11	1
2024012	99	74	65,7	cyclictest	2023943	-21	kworker/u4:7+events_unbound	08:00:18	0
2024013	99	73	65,6	cyclictest	2111933	-21	kworker/u4:5+events_unbound	10:45:52	1
2024013	99	73	65,6	cyclictest	2111933	-21	kworker/u4:5+events_unbound	10:45:52	1
2024012	99	72	65,5	cyclictest	2219670	-21	kworker/u4:5+events_unbound	12:16:02	0
2024012	99	72	28,18	cyclictest	0	-21	swapper/0	07:10:00	0
2024013	99	69	55,7	cyclictest	2089537	-21	kworker/u4:8+events_unbound	09:50:00	1
2024012	99	69	62,5	cyclictest	2111932	-21	kworker/u4:4+events_unbound	10:25:47	0
2024013	99	68	61,5	cyclictest	2080303	-21	kworker/u4:5+events_unbound	10:00:46	1
2024012	99	66	59,5	cyclictest	2224176	-21	kworker/u4:8+events_unbound	12:26:05	0
2024013	99	65	57,6	cyclictest	2147931	-21	kworker/u4:17+events_unbound	11:05:54	1
2024013	99	64	57,5	cyclictest	2015358	-21	kworker/u4:11+events_unbound	07:30:10	1
2024012	99	64	57,5	cyclictest	2184181	-21	kworker/u4:9+events_unbound	11:41:00	0
2024012	99	64	46,6	cyclictest	2048431	-21	kworker/u4:9+events_unbound	08:45:43	0
2024013	99	62	54,6	cyclictest	2100405	-21	awk	10:00:01	1
2024013	99	60	50,7	cyclictest	378	-21	dbus-daemon	12:16:01	1
2024013	99	59	52,5	cyclictest	2143405	-21	kworker/u4:14+events_unbound	11:00:53	1
2024013	99	59	47,7	cyclictest	2027845	-21	apt-get	07:25:07	1
2024012	99	59	44,6	cyclictest	2107325	-21	kworker/u4:3+events_unbound	10:10:02	0
2024012	99	59	44,6	cyclictest	2107325	-21	kworker/u4:3+events_unbound	10:10:02	0
2024013	99	58	33,4	cyclictest	2029176	-21	kworker/u4:18+events_unbound	07:45:00	1
2024012	99	58	47,8	cyclictest	2038684	-21	sshd	08:05:18	0
2024012	99	58	41,15	cyclictest	2116550	-21	kworker/u4:1+events_unbound	10:20:02	0
2024012	99	58	41,15	cyclictest	2116550	-21	kworker/u4:1+events_unbound	10:20:02	0
2024012	99	58	39,17	cyclictest	2150679	-21	tune2fs	10:55:18	0
2024013	99	57	48,4	cyclictest	0	-21	swapper/1	12:25:37	1
2024013	99	57	43,10	cyclictest	2078032	-21	tr	09:35:14	1
2024012	99	57	49,6	cyclictest	2133498	-21	ssh	10:35:40	0
2024012	99	57	37,18	cyclictest	2065427	-21	switchtime	09:20:38	0
2024013	99	56	36,6	cyclictest	2102713	-21	kworker/u4:8+events_unbound	10:11:45	1
2024013	99	56	36,6	cyclictest	2102713	-21	kworker/u4:8+events_unbound	10:11:45	1
2024012	99	56	49,5	cyclictest	2161578	-21	kworker/u4:2+events_unbound	11:10:54	0
2024013	99	55	48,5	cyclictest	2051906	-21	ntpq	08:55:35	1
2024012	99	55	47,6	cyclictest	2080300	-21	kworker/u4:2+events_unbound	09:50:02	0
2024012	99	55	47,5	cyclictest	2232559	-21	kworker/u4:0+xprtiod	12:35:11	0
2024012	99	55	46,7	cyclictest	2054967	-21	latency_hist	09:10:01	0
2024013	99	54	25,9	cyclictest	2175170	-21	kworker/u4:3+events_unbound	11:55:05	1
2024013	99	53	46,5	cyclictest	2175170	-21	kworker/u4:3+events_unbound	11:40:03	1
2024013	99	53	35,7	cyclictest	2023944	-21	kworker/u4:8+events_unbound	07:20:15	1
2024012	99	53	41,6	cyclictest	2102713	-21	kworker/u4:8+events_unbound	10:05:01	0
2024012	99	53	10,27	cyclictest	2208923	-21	ssh	12:00:24	0
2024013	99	52	45,5	cyclictest	2086773	-21	ssh	09:45:00	1
2024013	99	52	44,5	cyclictest	2043708	-21	df_abs	08:25:16	1
2024013	99	52	41,7	cyclictest	0	-21	swapper/1	12:20:25	1
2024013	99	52	41,7	cyclictest	0	-21	swapper/1	12:20:25	1
2024012	99	52	45,5	cyclictest	2197078	-21	kworker/u4:0+events_unbound	12:10:00	0
2024012	99	52	29,21	cyclictest	2034667	-21	aten_r7power_po	07:50:18	0
2024013	99	51	44,5	cyclictest	2212540	-21	latency_hist	12:05:02	1
2024013	99	51	40,7	cyclictest	0	-21	swapper/1	09:25:39	1
2024013	99	51	33,10	cyclictest	2106103	-21	ssh	10:05:33	1
2024012	99	51	44,5	cyclictest	2192572	-21	kworker/u4:1+events_unbound	11:45:03	0
2024012	99	51	43,6	cyclictest	2080300	-21	kworker/u4:2+events_unbound	09:45:43	0
2024012	99	51	35,12	cyclictest	2172645	-21	acpi	11:20:10	0
2024013	99	50	44,4	cyclictest	2050635	-21	sshd	08:50:34	1
2024013	99	50	43,5	cyclictest	2130402	-21	kworker/u4:13+events_unbound	10:39:44	1
2024013	99	50	42,5	cyclictest	0	-21	swapper/1	11:20:24	1
2024012	99	50	42,6	cyclictest	2166111	-21	kworker/u4:5+events_unbound	11:25:57	0
2024012	99	50	42,6	cyclictest	2033324	-21	/usr/sbin/munin	07:45:15	0
2024012	99	50	41,7	cyclictest	2035854	-21	aten2__	07:55:13	0
2024012	99	50	29,7	cyclictest	0	-21	swapper/0	11:55:17	0
2024013	99	49	43,4	cyclictest	2200942	-21	kworker/u4:8+events_unbound	12:05:21	1
2024013	99	49	41,5	cyclictest	2091740	-21	aten_r7power_cu	09:50:19	1
2024013	99	49	39,8	cyclictest	2048994	-21	fschecks_count	08:45:24	1
2024013	99	49	39,6	cyclictest	0	-21	swapper/1	08:10:21	1
2024012	99	49	40,6	cyclictest	2053620	-21	kworker/u4:12+rpciod	09:15:38	0
2024013	99	48	41,5	cyclictest	2195185	-21	grep	11:45:17	1
2024013	99	48	41,5	cyclictest	2125794	-21	kworker/u4:1+events_unbound	10:32:19	1
2024013	99	48	37,9	cyclictest	53	-21	kswapd0	12:35:10	1
2024013	99	48	34,5	cyclictest	2197078	-21	kworker/u4:0+events_unbound	12:10:57	1
2024012	99	48	41,5	cyclictest	2111933	-21	kworker/u4:5+events_unbound	10:49:45	0
2024012	99	48	41,5	cyclictest	2111933	-21	kworker/u4:5+events_unbound	10:49:45	0
2024012	99	48	40,5	cyclictest	2138225	-21	/usr/sbin/munin	10:40:40	0
2024012	99	48	38,8	cyclictest	2056072	-21	sshd	09:10:32	0
2024012	99	48	35,6	cyclictest	2080303	-21	kworker/u4:5+events_unbound	09:38:47	0
2024012	99	48	31,6	cyclictest	2047135	-21	kworker/u4:8+events_unbound	09:05:01	0
2024012	99	48	27,18	cyclictest	0	-21	swapper/0	10:20:00	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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