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 Jul 30, 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
1603109	99	103	56,43	cyclictest	0	-21	swapper/1	11:20:12	1
1603107	99	96	74,14	cyclictest	53	-21	kswapd0	10:50:12	0
1603107	99	94	67,22	cyclictest	53	-21	kswapd0	09:45:09	0
1603107	99	94	67,22	cyclictest	53	-21	kswapd0	09:45:08	0
1603107	99	88	80,6	cyclictest	1770562	-21	kworker/u4:6+events_unbound	12:25:48	0
1603107	99	88	63,18	cyclictest	53	-21	kswapd0	11:00:18	0
1603109	99	87	78,6	cyclictest	1730512	-21	kworker/u4:15+events_unbound	11:15:40	1
1603107	99	87	79,6	cyclictest	1621022	-21	kworker/u4:18+events_unbound	09:50:30	0
1603109	99	86	46,37	cyclictest	1630364	-21	basename	08:55:18	1
1603109	99	80	41,5	cyclictest	1769178	-21	sh	11:40:49	1
1603109	99	77	60,9	cyclictest	0	-21	swapper/1	10:55:20	1
1603109	99	76	43,5	cyclictest	1745296	-21	ssh	11:15:01	1
1603107	99	70	58,7	cyclictest	1766049	-21	kworker/u4:13+xprtiod	11:40:11	0
1603109	99	69	60,7	cyclictest	1677139	-21	kworker/u4:10+events_unbound	10:10:32	1
1603109	99	68	55,9	cyclictest	1772966	-21	if_eth0	11:45:18	1
1603107	99	67	57,7	cyclictest	1605610	-21	kworker/u4:13+events_unbound	07:24:53	0
1603107	99	65	3,59	cyclictest	1816176	-21	apt-get	12:35:07	0
1603109	99	64	56,6	cyclictest	1588997	-21	kworker/u4:9+events_unbound	07:49:58	1
1603107	99	63	55,6	cyclictest	1791242	-21	ssh	12:05:43	0
1603107	99	62	50,5	cyclictest	1603037	-21	kworker/u4:6+events_unbound	08:30:01	0
1603107	99	61	52,7	cyclictest	1706709	-21	/usr/sbin/munin	10:30:37	0
1603109	99	60	49,8	cyclictest	37	-21	kcompactd0	09:00:29	1
1603109	99	59	37,17	cyclictest	0	-21	swapper/1	11:55:37	1
1603109	99	58	46,8	cyclictest	53	-21	kswapd0	12:25:13	1
1603107	99	58	1,14	cyclictest	1727993	-21	apt-get	10:55:16	0
1603109	99	56	47,6	cyclictest	1634525	-21	diskstats	09:10:20	1
1603109	99	56	47,6	cyclictest	1634525	-21	diskstats	09:10:19	1
1603107	99	56	41,10	cyclictest	1713281	-21	ssh	10:38:19	0
1603107	99	55	41,9	cyclictest	1781054	-21	ssh	11:55:02	0
1603107	99	55	40,11	cyclictest	0	-21	swapper/0	10:20:30	0
1603109	99	54	8,27	cyclictest	1804076	-21	ssh	12:20:31	1
1603109	99	54	46,6	cyclictest	1712538	-21	kworker/u4:7+events_unbound	10:40:35	1
1603109	99	54	46,5	cyclictest	1663588	-21	kworker/u4:1+events_unbound	09:50:02	1
1603109	99	54	46,5	cyclictest	1663588	-21	kworker/u4:1+events_unbound	09:50:01	1
1603107	99	54	48,4	cyclictest	1617202	-21	kworker/u4:4+events_unbound	08:19:26	0
1603107	99	54	46,6	cyclictest	1632617	-21	kworker/u4:3+events_unbound	09:35:29	0
1603107	99	53	29,20	cyclictest	0	-21	swapper/0	11:30:37	0
1603109	99	52	45,5	cyclictest	1652428	-21	aten_r7power_cu	09:30:16	1
1603109	99	52	25,15	cyclictest	0	-21	swapper/1	10:20:30	1
1603107	99	52	45,4	cyclictest	0	-21	swapper/0	11:55:14	0
1603107	99	52	43,7	cyclictest	1778853	-21	kworker/u4:8+events_unbound	12:10:39	0
1603107	99	52	33,16	cyclictest	1621022	-21	kworker/u4:18-xprtiod	08:55:01	0
1603109	99	51	6,28	cyclictest	1648531	-21	ssh	09:25:27	1
1603109	99	51	44,5	cyclictest	1629718	-21	sendmail_mailqu	08:50:37	1
1603107	99	51	44,5	cyclictest	1742323	-21	timerwakeupswit	11:10:38	0
1603107	99	51	43,5	cyclictest	1702394	-21	mailstats	10:25:36	0
1603107	99	51	42,4	cyclictest	1395729	-21	kworker/u4:8+events_unbound	07:10:39	0
1603107	99	51	41,8	cyclictest	1754831	-21	df_abs	11:25:15	0
1603107	99	51	32,17	cyclictest	1603106	-21	cyclictest	09:30:28	0
1603109	99	50	44,5	cyclictest	1699015	-21	kworker/u4:4+events_unbound	10:30:34	1
1603109	99	50	40,7	cyclictest	1763357	-21	latency_hist	11:35:01	1
1603107	99	50	43,5	cyclictest	1679168	-21	apt-get	10:00:10	0
1603107	99	50	41,6	cyclictest	1802978	-21	ssh	12:20:01	0
1603107	99	50	30,16	cyclictest	1712536	-21	kworker/u4:2-rpciod	10:41:15	0
1603107	99	50	23,24	cyclictest	0	-21	swapper/0	11:35:26	0
1603109	99	49	43,4	cyclictest	1754923	-21	fschecks_count	11:25:19	1
1603109	99	49	42,5	cyclictest	1608522	-21	aten_r7power_cu	07:30:15	1
1603109	99	49	42,5	cyclictest	1605667	-21	idleruntime-cro	07:20:01	1
1603109	99	49	42,5	cyclictest	1605667	-21	idleruntime-cro	07:20:00	1
1603109	99	49	39,7	cyclictest	0	-21	swapper/1	09:15:28	1
1603109	99	49	35,9	cyclictest	1604349	-21	modprobe	07:15:00	1
1603107	99	49	41,6	cyclictest	256	50	irq/23-42890000.ethernet	11:05:42	0
1603107	99	49	35,9	cyclictest	1664304	-21	ssh	09:43:04	0
1603109	99	48	41,5	cyclictest	1803146	-21	sed	12:20:01	1
1603109	99	48	41,5	cyclictest	1795426	-21	ssh	12:10:38	1
1603109	99	48	41,5	cyclictest	1677137	-21	kworker/u4:6+events_unbound	10:10:03	1
1603109	99	48	40,6	cyclictest	1693239	-21	sh	10:15:29	1
1603109	99	48	39,6	cyclictest	1699014	-21	kworker/u4:3-rpciod	10:25:34	1
1603109	99	48	39,6	cyclictest	1657838	-21	ps	09:35:37	1
1603109	99	48	39,6	cyclictest	0	-21	swapper/1	10:50:37	1
1603109	99	48	34,9	cyclictest	0	-21	swapper/1	09:55:38	1
1603107	99	48	41,5	cyclictest	1719402	-21	fschecks_count	10:45:18	0
1603107	99	48	39,6	cyclictest	1644279	-21	ssh	09:20:38	0
1603107	99	48	3,41	cyclictest	0	-21	swapper/0	08:45:10	0
1603107	99	48	20,3	cyclictest	15	1	ktimers/0	12:30:28	0
1603109	99	47	40,5	cyclictest	1613854	-21	tune2fs	07:50:17	1
1603109	99	47	39,5	cyclictest	1714362	-21	modprobe	10:40:01	1
1603109	99	47	36,7	cyclictest	37	-21	kcompactd0	08:00:19	1
1603107	99	47	40,5	cyclictest	1807391	-21	cron	12:25:01	0
1603107	99	47	29,16	cyclictest	0	-21	swapper/0	10:15:24	0
1603109	99	46	40,4	cyclictest	1627424	-21	kworker/u4:10-rpciod	09:20:20	1
1603109	99	46	39,5	cyclictest	1813288	-21	grep	12:30:39	1
1603109	99	46	39,5	cyclictest	1733199	-21	sh	11:00:36	1
1603109	99	46	39,5	cyclictest	1633124	-21	fschecks_time	09:05:18	1
1603109	99	46	39,5	cyclictest	1603106	-21	cyclictest	07:39:54	1
1603109	99	46	38,6	cyclictest	1670553	-21	df_abs	09:50:17	1
1603109	99	46	36,7	cyclictest	0	-21	swapper/1	11:05:26	1
1603107	99	46	39,5	cyclictest	1677140	-21	kworker/u4:11+events_unbound	10:13:46	0
1603107	99	46	38,6	cyclictest	1750592	-21	grep	11:20:20	0
1603107	99	46	3,13	cyclictest	1674768	-21	apt-get	09:55:15	0
1603109	99	45	38,5	cyclictest	1816581	-21	cut	12:35:21	1
1603109	99	45	38,5	cyclictest	1756947	-21	kworker/u4:3+events_unbound	11:35:42	1
1603109	99	45	35,7	cyclictest	1720315	-21	unixbench-2d	10:45:38	1
1603107	99	45	38,5	cyclictest	1603037	-21	kworker/u4:6+events_unbound	08:28:47	0
1603107	99	45	31,9	cyclictest	1614197	-21	ntpq	07:50:29	0
1603109	99	44	38,4	cyclictest	0	-21	swapper/1	10:00:30	1
1603109	99	44	35,7	cyclictest	1621038	-21	kworker/u4:19	08:20:00	1
1603109	99	44	35,7	cyclictest	1608000	-21	switchtime	07:25:36	1
1603109	99	44	33,8	cyclictest	1603037	-21	kworker/u4:6-rpciod	07:55:37	1
1603107	99	44	9,3	cyclictest	15	1	ktimers/0	09:15:17	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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