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 14, 2026 12:44:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1575531	99	100	88,9	cyclictest	53	-21	kswapd0	11:45:10	0
1575531	99	96	88,6	cyclictest	1635791	-21	kworker/u4:7+events_unbound	09:44:47	0
1575532	99	93	69,15	cyclictest	53	-21	kswapd0	11:45:08	1
1575531	99	93	53,35	cyclictest	1575530	-21	cyclictest	12:19:26	0
1575531	99	80	69,8	cyclictest	1680435	-21	kworker/u4:1+events_unbound	10:45:01	0
1575531	99	76	68,6	cyclictest	1653936	-21	kworker/u4:4+events_unbound	10:24:53	0
1575531	99	75	59,13	cyclictest	53	-21	kswapd0	10:10:08	0
1575531	99	71	61,6	cyclictest	53	-21	kswapd0	12:20:12	0
1575531	99	70	62,6	cyclictest	1751173	-21	kworker/u4:14+events_unbound	11:55:12	0
1575531	99	68	39,23	cyclictest	0	-21	swapper/0	09:55:24	0
1575531	99	67	58,7	cyclictest	1592218	-21	kworker/u4:17+events_unbound	09:19:43	0
1575531	99	65	46,12	cyclictest	1579207	-21	kworker/u4:7+rpciod	07:55:09	0
1575532	99	63	55,6	cyclictest	1635794	-21	kworker/u4:10+events_unbound	09:50:00	1
1575532	99	63	54,7	cyclictest	1626695	-21	kworker/u4:12+events_unbound	09:34:45	1
1575531	99	61	7,8	cyclictest	0	-21	swapper/0	10:05:24	0
1575531	99	60	53,5	cyclictest	1696954	-21	switchtime	10:50:37	0
1575531	99	60	2,38	cyclictest	1629151	-21	ssh	09:35:14	0
1575532	99	59	22,11	cyclictest	1740252	-21	apt-get	11:40:16	1
1575532	99	59	22,11	cyclictest	1666685	-21	ssh	10:16:32	1
1575532	99	59	21,11	cyclictest	1701865	-21	ssh	10:56:00	1
1575532	99	59	20,13	cyclictest	1693874	-21	ssh	10:47:22	1
1575532	99	59	19,14	cyclictest	1650330	-21	ssh	09:58:48	1
1575531	99	59	50,7	cyclictest	1603727	-21	systemd	08:59:37	0
1575532	99	58	22,13	cyclictest	1731299	-21	ssh	11:30:02	1
1575532	99	58	22,11	cyclictest	1716724	-21	ssh	11:13:22	1
1575532	99	58	19,14	cyclictest	1690603	-21	ssh	10:44:10	1
1575532	99	58	18,15	cyclictest	1612527	-21	ssh	09:15:45	1
1575532	99	58	17,16	cyclictest	1728393	-21	ssh	11:25:45	1
1575532	99	57	24,10	cyclictest	1678875	-21	rm	10:30:29	1
1575532	99	57	21,10	cyclictest	1656557	-21	ntpq	10:05:25	1
1575532	99	57	20,10	cyclictest	1618096	-21	ssh	09:22:21	1
1575532	99	57	19,13	cyclictest	1788366	-21	ssh	12:34:59	1
1575532	99	57	19,11	cyclictest	1610058	-21	ssh	09:13:50	1
1575532	99	57	18,14	cyclictest	1755060	-21	ssh	11:56:10	1
1575532	99	57	18,11	cyclictest	1783017	-21	ssh	12:28:34	1
1575532	99	57	17,15	cyclictest	1790604	-21	ssh	12:36:32	1
1575532	99	57	17,14	cyclictest	1752108	-21	ssh	11:53:22	1
1575531	99	57	44,8	cyclictest	1601194	-21	kworker/u4:18	08:50:01	0
1575531	99	57	40,6	cyclictest	1755606	-21	kworker/u4:16+events_unbound	12:00:13	0
1575531	99	57	1,49	cyclictest	1584432	-21	apt-get	07:45:08	0
1575532	99	56	36,16	cyclictest	1722583	-21	apt-get	11:20:16	1
1575532	99	56	22,11	cyclictest	1636312	-21	ssh	09:42:49	1
1575532	99	56	19,12	cyclictest	1580155	-21	ntpq	07:25:38	1
1575532	99	56	19,11	cyclictest	1737272	-21	ssh	11:35:54	1
1575532	99	56	19,10	cyclictest	1646491	-21	ssh	09:54:46	1
1575532	99	56	18,14	cyclictest	1684342	-21	ssh	10:36:23	1
1575532	99	56	17,14	cyclictest	1630859	-21	ssh	09:36:16	1
1575532	99	56	16,17	cyclictest	1769721	-21	ssh	12:13:25	1
1575532	99	56	16,17	cyclictest	1769721	-21	ssh	12:13:25	1
1575532	99	56	16,15	cyclictest	1675467	-21	ssh	10:26:20	1
1575531	99	56	48,6	cyclictest	1652409	-21	/usr/sbin/munin	10:00:38	0
1575532	99	55	19,11	cyclictest	1761682	-21	ssh	12:04:37	1
1575532	99	55	19,11	cyclictest	1719659	-21	ssh	11:16:02	1
1575532	99	55	17,14	cyclictest	1764331	-21	ssh	12:06:49	1
1575532	99	55	16,15	cyclictest	1655167	-21	ssh	10:04:23	1
1575532	99	55	16,14	cyclictest	1621676	-21	ssh	09:25:59	1
1575532	99	54	47,5	cyclictest	1591885	-21	sendmail_mailqu	08:10:37	1
1575532	99	54	19,9	cyclictest	1708027	-21	ssh	11:03:39	1
1575532	99	54	18,10	cyclictest	1711411	-21	ssh	11:07:01	1
1575532	99	54	16,12	cyclictest	1699797	-21	ssh	10:54:42	1
1575532	99	54	15,13	cyclictest	1777098	-21	ssh	12:21:10	1
1575531	99	54	44,7	cyclictest	1742160	-21	kworker/u4:4-rpciod	11:50:16	0
1575531	99	54	43,8	cyclictest	1606293	-21	systemd	09:09:38	0
1575532	99	53	19,11	cyclictest	1773278	-21	ssh	12:17:04	1
1575531	99	53	5,43	cyclictest	0	-21	swapper/0	07:25:06	0
1575531	99	53	46,5	cyclictest	1711339	-21	kworker/u4:0+events_unbound	11:10:04	0
1575531	99	52	45,5	cyclictest	1736807	-21	/usr/sbin/munin	11:35:39	0
1575531	99	52	44,6	cyclictest	1733812	-21	kworker/u4:2+events_unbound	11:40:09	0
1575531	99	52	40,8	cyclictest	1722958	-21	grep	11:20:22	0
1575531	99	52	33,16	cyclictest	0	-21	swapper/0	10:30:33	0
1575531	99	52	2,42	cyclictest	1638036	-21	apt-get	09:45:13	0
1575532	99	51	20,8	cyclictest	1576099	-21	ntpq	07:10:23	1
1575532	99	51	18,8	cyclictest	1594284	-21	ntpq	08:20:26	1
1575532	99	51	16,10	cyclictest	1602037	-21	ntpq	08:50:34	1
1575531	99	51	8,20	cyclictest	1727942	-21	ssh	11:25:39	0
1575531	99	51	41,7	cyclictest	1580986	-21	/usr/sbin/munin	07:30:17	0
1575532	99	50	24,14	cyclictest	1658457	-21	kworker/u4:12-xprtiod	10:10:08	1
1575532	99	50	14,13	cyclictest	1589243	-21	ntp_states	08:00:31	1
1575532	99	50	14,10	cyclictest	1578776	-21	ntpq	07:20:32	1
1575531	99	50	43,5	cyclictest	1621315	-21	timerwakeupswit	09:25:41	0
1575531	99	50	37,8	cyclictest	0	-21	swapper/0	08:20:38	0
1575532	99	49	32,14	cyclictest	1598237	-21	ps	08:35:36	1
1575532	99	49	26,3	cyclictest	1670989	-21	ssh	10:21:16	1
1575532	99	49	15,12	cyclictest	1589858	-21	/usr/sbin/munin	08:05:36	1
1575531	99	49	38,9	cyclictest	1598859	-21	aten2__	08:40:15	0
1575532	99	48	38,7	cyclictest	0	-21	swapper/1	08:25:29	1
1575531	99	48	42,4	cyclictest	1576620	-21	kworker/u4:8+events_unbound	08:15:02	0
1575531	99	48	41,5	cyclictest	1644196	-21	kworker/u4:5+events_unbound	09:55:01	0
1575531	99	48	40,5	cyclictest	1666856	-21	kworker/u4:15+events_unbound	10:19:53	0
1575531	99	48	32,13	cyclictest	1674694	-21	processes	10:25:41	0
1575531	99	48	30,15	cyclictest	0	-21	swapper/0	10:55:23	0
1575531	99	48	13,30	cyclictest	1732175	-21	ntpq	11:30:32	0
1575532	99	47	38,7	cyclictest	1599045	-21	df_abs	08:40:17	1
1575532	99	47	31,10	cyclictest	1605812	-21	ntpq	09:05:28	1
1575532	99	47	11,13	cyclictest	1586652	-21	ps	07:50:34	1
1575531	99	47	40,5	cyclictest	1598607	-21	kworker/u4:0+events_unbound	08:39:37	0
1575531	99	47	39,5	cyclictest	53	-21	kswapd0	11:10:01	0
1575531	99	47	38,7	cyclictest	1784321	-21	sshd	12:30:17	0
1575531	99	47	38,6	cyclictest	1589450	-21	threads	08:00:37	0
1575531	99	47	35,10	cyclictest	0	-21	swapper/0	08:30:00	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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