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 Fri Mar 06, 2026 12:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1740393	99	106	96,8	cyclictest	1919014	-21	kworker/u4:11+events_unbound	12:04:47	1
1740393	99	106	96,8	cyclictest	1919014	-21	kworker/u4:11+events_unbound	12:04:46	1
1740393	99	91	84,5	cyclictest	1859342	-21	kworker/u4:6+events_unbound	11:14:40	1
1740393	99	75	65,7	cyclictest	1949022	-21	kworker/u4:5+events_unbound	12:39:50	1
1740392	99	71	58,10	cyclictest	54	-21	kswapd0	10:40:32	0
1740392	99	69	60,7	cyclictest	1777965	-21	kworker/u4:0+events_unbound	09:24:27	0
1740392	99	66	55,8	cyclictest	1753204	-21	kworker/u4:13+events_unbound	08:19:15	0
1740392	99	66	50,14	cyclictest	1876750	-21	kworker/u4:7+events_unbound	11:14:59	0
1740392	99	65	57,6	cyclictest	1838233	-21	kworker/u4:9+events_unbound	10:34:35	0
1740393	99	64	58,4	cyclictest	1750664	-21	kworker/u4:9+events_unbound	09:14:27	1
1740393	99	64	54,7	cyclictest	1803508	-21	kworker/u4:4+events_unbound	10:04:30	1
1740392	99	64	55,6	cyclictest	1759618	-21	kworker/u4:17+events_unbound	09:19:28	0
1740392	99	63	55,5	cyclictest	1859344	-21	kworker/u4:10+events_unbound	10:54:37	0
1740392	99	62	54,5	cyclictest	1940519	-21	kworker/u4:3+events_unbound	12:29:48	0
1740393	99	61	53,5	cyclictest	1745459	-21	kworker/u4:5+events_unbound	08:15:00	1
1740392	99	61	51,7	cyclictest	1876750	-21	kworker/u4:7+events_unbound	11:19:39	0
1740392	99	60	51,6	cyclictest	1791085	-21	kworker/u4:12+events_unbound	09:54:31	0
1740392	99	59	51,5	cyclictest	0	-21	swapper/0	12:10:38	0
1740392	99	59	38,19	cyclictest	1836471	-21	kernelversion	10:25:25	0
1740393	99	58	49,6	cyclictest	1934093	-21	latency_hist	12:20:02	1
1740393	99	58	48,8	cyclictest	1796745	-21	systemd	09:39:29	1
1740393	99	58	47,7	cyclictest	37	-21	kcompactd0	11:55:20	1
1740392	99	58	50,6	cyclictest	1838232	-21	kworker/u4:8+events_unbound	10:47:59	0
1740392	99	58	49,6	cyclictest	1764809	-21	kworker/u4:1+events_unbound	08:49:21	0
1740393	99	57	50,5	cyclictest	1862079	-21	/usr/sbin/munin	10:55:21	1
1740393	99	57	48,7	cyclictest	314	-21	systemd-journal	11:54:43	1
1740392	99	57	48,7	cyclictest	1786728	-21	kworker/u4:8+events_unbound	09:44:30	0
1740393	99	56	48,6	cyclictest	1745459	-21	kworker/u4:5+events_unbound	07:35:02	1
1740392	99	56	47,6	cyclictest	1759619	-21	kworker/u4:18+events_unbound	08:24:15	0
1740392	99	56	46,7	cyclictest	1715324	-21	kworker/u4:0+events_unbound	07:24:08	0
1740393	99	55	48,5	cyclictest	1810824	-21	awk	09:55:22	1
1740393	99	55	46,7	cyclictest	1928286	-21	kworker/u4:12+events_unbound	12:13:43	1
1740393	99	55	43,10	cyclictest	1866231	-21	fschecks_count	11:00:19	1
1740392	99	55	45,8	cyclictest	314	-21	systemd-journal	11:34:42	0
1740392	99	54	46,6	cyclictest	1820819	-21	kworker/u4:1+events_unbound	10:09:32	0
1740392	99	54	34,18	cyclictest	1891268	-21	cron	11:30:00	0
1740393	99	53	5,38	cyclictest	1806693	-21	ntpq	09:50:29	1
1740393	99	53	45,6	cyclictest	1896095	-21	/usr/sbin/munin	11:35:16	1
1740393	99	53	45,5	cyclictest	1751973	-21	idleruntime-cro	07:55:00	1
1740393	99	53	45,5	cyclictest	1751973	-21	idleruntime-cro	07:54:59	1
1740393	99	53	29,8	cyclictest	1833885	-21	kworker/u4:7+events_unbound	10:50:39	1
1740392	99	53	45,6	cyclictest	1896426	-21	/usr/sbin/munin	11:35:21	0
1740392	99	53	44,7	cyclictest	1912483	-21	sshd	11:54:44	0
1740392	99	53	44,6	cyclictest	1844809	-21	/usr/sbin/munin	10:35:22	0
1740392	99	53	44,6	cyclictest	1758310	-21	kworker/u4:16+events_unbound	08:44:18	0
1740392	99	53	44,6	cyclictest	0	-21	swapper/0	12:00:00	0
1740392	99	53	42,8	cyclictest	1931949	-21	kthreadd	12:16:44	0
1740393	99	52	45,5	cyclictest	1803509	-21	kworker/u4:6+events_unbound	09:46:43	1
1740393	99	52	44,6	cyclictest	1885477	-21	kworker/u4:10+events_unbound	11:45:59	1
1740393	99	52	43,7	cyclictest	1852430	-21	sshd	10:44:34	1
1740393	99	52	31,5	cyclictest	1759619	-21	kworker/u4:18+events_unbound	08:25:01	1
1740393	99	52	30,6	cyclictest	1881120	-21	kworker/u4:2+events_unbound	11:18:43	1
1740392	99	52	45,5	cyclictest	1870406	-21	sed	11:05:17	0
1740392	99	52	43,7	cyclictest	1751933	-21	kworker/u4:11+events_unbound	08:39:19	0
1740392	99	52	43,6	cyclictest	1861832	-21	/usr/sbin/munin	10:55:18	0
1740393	99	51	40,7	cyclictest	0	-21	swapper/1	11:30:37	1
1740393	99	51	38,11	cyclictest	1828180	-21	open_inodes	10:15:36	1
1740392	99	51	30,7	cyclictest	0	-21	swapper/0	08:55:01	0
1740393	99	50	43,5	cyclictest	1749391	-21	kworker/u4:2+events_unbound	07:50:01	1
1740393	99	50	42,5	cyclictest	1823618	-21	/usr/sbin/munin	10:10:22	1
1740393	99	50	42,5	cyclictest	1823618	-21	/usr/sbin/munin	10:10:21	1
1740392	99	50	43,5	cyclictest	1777965	-21	kworker/u4:0+events_unbound	09:29:27	0
1740392	99	50	39,8	cyclictest	1797245	-21	latency_hist	09:40:01	0
1740392	99	50	38,9	cyclictest	1900266	-21	aten_r7power_po	11:40:15	0
1740392	99	50	33,15	cyclictest	1934363	-21	aten_r7power_po	12:20:15	0
1740392	99	50	33,15	cyclictest	1742943	-21	idleruntime-cro	07:20:01	0
1740392	99	49	42,5	cyclictest	1949024	-21	kworker/u4:9+events_unbound	12:38:59	0
1740392	99	49	42,5	cyclictest	1804133	-21	kworker/u4:13+events_unbound	09:59:59	0
1740392	99	49	41,6	cyclictest	1825141	-21	kworker/u4:3+events_unbound	10:14:33	0
1740392	99	49	41,6	cyclictest	1825141	-21	kworker/u4:3+events_unbound	10:14:32	0
1740392	99	49	40,7	cyclictest	1943424	-21	ssh	12:30:34	0
1740392	99	49	39,7	cyclictest	1859343	-21	kworker/u4:9-rpciod	11:00:12	0
1740392	99	49	27,19	cyclictest	0	-21	swapper/0	11:20:41	0
1740393	99	48	5,33	cyclictest	1831876	-21	diskstats	10:20:18	1
1740393	99	48	42,4	cyclictest	1900228	-21	aten_r7power_en	11:40:15	1
1740393	99	48	41,5	cyclictest	1934624	-21	fschecks_time	12:20:20	1
1740393	99	48	41,5	cyclictest	1775879	-21	apt-get	09:15:14	1
1740393	99	48	40,6	cyclictest	1884183	-21	cat	11:20:40	1
1740393	99	48	39,6	cyclictest	1887396	-21	aten_r7power_en	11:25:16	1
1740393	99	48	39,6	cyclictest	1870991	-21	ntpq	11:05:34	1
1740392	99	48	39,7	cyclictest	1745459	-21	kworker/u4:5+events_unbound	07:34:45	0
1740392	99	48	39,6	cyclictest	1764809	-21	kworker/u4:1+events_unbound	08:59:22	0
1740392	99	48	38,8	cyclictest	1760041	-21	aten_r7power_vo	08:25:21	0
1740392	99	48	38,7	cyclictest	1753205	-21	kworker/u4:14+events_unbound	08:34:19	0
1740392	99	48	37,8	cyclictest	1748331	-21	aten2__	07:40:14	0
1740392	99	48	33,13	cyclictest	0	-21	swapper/0	09:46:43	0
1740392	99	48	25,21	cyclictest	1751962	-21	modprobe	07:55:00	0
1740392	99	48	25,21	cyclictest	1751962	-21	modprobe	07:54:59	0
1740393	99	47	40,5	cyclictest	1942474	-21	latency_hist	12:30:01	1
1740393	99	47	38,6	cyclictest	1753693	-21	grep	08:00:19	1
1740393	99	47	37,7	cyclictest	0	-21	swapper/1	09:40:34	1
1740392	99	47	41,4	cyclictest	1745509	-21	modprobe	07:30:00	0
1740392	99	47	38,7	cyclictest	1753292	-21	latency_hist	08:00:01	0
1740392	99	47	37,8	cyclictest	1789165	-21	fschecks_count	09:30:20	0
1740392	99	47	36,8	cyclictest	0	-21	swapper/0	11:45:36	0
1740392	99	47	28,17	cyclictest	0	-21	swapper/0	10:15:30	0
1740393	99	46	40,4	cyclictest	1836446	-21	irqstats	10:25:25	1
1740393	99	46	39,5	cyclictest	1742550	-21	sendmail_mailqu	07:15:34	1
1740393	99	46	38,6	cyclictest	1838230	-21	kworker/u4:4+events_unbound	10:35:23	1
1740393	99	46	38,5	cyclictest	1782425	-21	kworker/u4:4-nfsiod	09:25:36	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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