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 all highest latencies:

System rack7slot2.osadl.org (updated Sun Jan 11, 2026 00:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1861351	99	109	101,6	cyclictest	1849065	-21	kworker/u4:13+events_unbound	20:57:58	0
1861351	99	106	98,6	cyclictest	1865112	-21	kworker/u4:7+events_unbound	20:12:50	0
1861351	99	101	92,7	cyclictest	1884293	-21	kworker/u4:2+events_unbound	21:08:01	0
1861352	99	95	88,5	cyclictest	1860088	-21	kworker/u4:5+events_unbound	21:13:02	1
1861352	99	95	86,6	cyclictest	1958714	-21	kworker/u4:13+events_unbound	22:28:12	1
1861352	99	91	77,4	cyclictest	1980299	-21	kworker/u4:5+events_unbound	23:23:19	1
1861352	99	91	74,5	cyclictest	1898803	-21	kworker/u4:4+events_unbound	21:38:05	1
1861352	99	89	80,7	cyclictest	1971722	-21	kworker/u4:9+events_unbound	22:53:14	1
1861352	99	82	75,5	cyclictest	2022988	-21	kworker/u4:6+events_unbound	23:58:24	1
1861352	99	82	75,5	cyclictest	1898802	-21	kworker/u4:3+events_unbound	21:18:03	1
1861352	99	81	60,6	cyclictest	1928733	-21	kworker/u4:5+events_unbound	21:53:07	1
1861352	99	76	68,6	cyclictest	1889429	-21	kworker/u4:11+events_unbound	21:03:00	1
1861351	99	75	69,5	cyclictest	1598366	-21	kworker/u4:6+events_unbound	19:17:39	0
1861351	99	72	3,51	cyclictest	1931603	-21	ssh	21:55:25	0
1861352	99	70	60,8	cyclictest	1862560	-21	kworker/u4:11+events_unbound	19:39:59	1
1861352	99	69	52,5	cyclictest	1967387	-21	kworker/u4:3+events_unbound	22:48:13	1
1861351	99	68	33,30	cyclictest	0	-21	swapper/0	23:05:09	0
1861352	99	67	50,6	cyclictest	1976021	-21	kworker/u4:0+events_unbound	23:00:01	1
1861351	99	67	37,18	cyclictest	255	50	irq/23-42890000.ethernet	20:50:10	0
1861351	99	65	57,6	cyclictest	1906942	-21	kworker/u4:8+events_unbound	21:40:00	0
1861351	99	64	57,5	cyclictest	2034493	-21	mailstats	23:55:36	0
1861351	99	64	56,6	cyclictest	2050962	-21	fschecks_count	00:15:19	0
1861351	99	64	56,6	cyclictest	2050962	-21	fschecks_count	00:15:19	0
1861352	99	62	54,6	cyclictest	1865112	-21	kworker/u4:7+events_unbound	20:37:55	1
1861352	99	62	53,6	cyclictest	2021415	-21	ld	23:40:28	1
1861352	99	62	45,5	cyclictest	1865109	-21	kworker/u4:0+events_unbound	20:27:51	1
1861351	99	62	7,49	cyclictest	1882987	-21	apt-get	20:35:09	0
1861351	99	62	3,23	cyclictest	1956773	-21	ssh	22:25:15	0
1861352	99	61	54,5	cyclictest	1993241	-21	kworker/u4:3+events_unbound	23:08:18	1
1861352	99	61	53,6	cyclictest	2056633	-21	ssh	00:21:16	1
1861352	99	61	52,6	cyclictest	1958714	-21	kworker/u4:13+events_unbound	22:38:13	1
1861352	99	60	49,7	cyclictest	0	-21	swapper/1	21:45:36	1
1861351	99	59	51,6	cyclictest	2052767	-21	kworker/u4:9+events_unbound	00:21:44	0
1861351	99	59	1,19	cyclictest	15	1	ktimers/0	21:45:26	0
1861352	99	58	53,3	cyclictest	1870160	-21	kworker/u4:8+events_unbound	20:02:48	1
1861352	99	58	51,5	cyclictest	1865112	-21	kworker/u4:7+events_unbound	19:52:48	1
1861352	99	58	51,5	cyclictest	1598366	-21	kworker/u4:6+events_unbound	19:42:44	1
1861352	99	58	4,11	cyclictest	17	1	rcu_preempt	00:05:30	1
1861351	99	58	52,5	cyclictest	2022349	-21	kworker/u4:5+events_unbound	23:49:43	0
1861351	99	58	51,5	cyclictest	1954334	-21	kworker/u4:12+events_unbound	22:21:44	0
1861352	99	57	48,7	cyclictest	1946717	-21	sshd	22:13:10	1
1861351	99	57	49,6	cyclictest	1898806	-21	kworker/u4:9+events_unbound	21:21:01	0
1861351	99	57	47,7	cyclictest	2047022	-21	ld	00:10:25	0
1861352	99	56	49,5	cyclictest	2065825	-21	kworker/u4:10+events_unbound	00:38:27	1
1861352	99	56	47,7	cyclictest	0	-21	swapper/1	23:50:12	1
1861351	99	56	35,18	cyclictest	0	-21	swapper/0	20:05:11	0
1861352	99	55	48,5	cyclictest	1874015	-21	kworker/u4:17+events_unbound	20:47:55	1
1861352	99	55	48,5	cyclictest	1862561	-21	kworker/u4:12+events_unbound	19:12:39	1
1861352	99	55	39,6	cyclictest	1862561	-21	kworker/u4:12+events_unbound	19:27:41	1
1861351	99	55	47,6	cyclictest	2027323	-21	kworker/u4:3+events_unbound	23:55:00	0
1861351	99	55	47,5	cyclictest	1944703	-21	diskmemload	22:10:35	0
1861351	99	55	44,7	cyclictest	2012690	-21	sed	23:30:23	0
1861352	99	54	45,7	cyclictest	2049339	-21	sshd	00:13:25	1
1861351	99	54	44,7	cyclictest	1861350	-21	cyclictest	23:35:32	0
1861352	99	52	46,4	cyclictest	1941842	-21	kworker/u4:6+events_unbound	22:08:10	1
1861352	99	52	45,5	cyclictest	1997582	-21	kworker/u4:12+events_unbound	23:13:58	1
1861352	99	52	44,5	cyclictest	0	-21	swapper/1	23:40:01	1
1861351	99	52	44,5	cyclictest	2063609	-21	aten_r7power_en	00:30:18	0
1861351	99	52	40,7	cyclictest	1849067	-21	kworker/u4:15-rpciod	19:15:00	0
1861352	99	51	45,4	cyclictest	2022988	-21	kworker/u4:6+events_unbound	23:48:24	1
1861351	99	51	45,4	cyclictest	1880956	-21	fschecks_time	20:25:20	0
1861351	99	51	44,6	cyclictest	2031034	-21	kworker/u4:9+events_unbound	00:02:00	0
1861351	99	51	43,6	cyclictest	1997582	-21	kworker/u4:12+events_unbound	23:21:43	0
1861351	99	51	43,6	cyclictest	1874015	-21	kworker/u4:17+events_unbound	20:41:44	0
1861351	99	51	43,5	cyclictest	1892843	-21	if_eth0	21:10:24	0
1861351	99	51	41,7	cyclictest	314	-21	systemd-journal	00:28:26	0
1861351	99	51	38,10	cyclictest	54	-21	kswapd0	22:30:09	0
1861351	99	51	37,8	cyclictest	0	-21	swapper/0	23:19:25	0
1861351	99	51	30,6	cyclictest	1982999	-21	gcc	22:55:29	0
1861351	99	51	30,12	cyclictest	0	-21	swapper/0	19:50:11	0
1861352	99	50	40,8	cyclictest	0	-21	swapper/1	23:00:36	1
1861351	99	50	43,5	cyclictest	1915652	-21	kworker/u4:10+events_unbound	22:00:59	0
1861351	99	50	40,7	cyclictest	1861350	-21	cyclictest	23:27:12	0
1861351	99	50	39,8	cyclictest	1939571	-21	aten2__	22:05:15	0
1861351	99	50	31,17	cyclictest	1995516	-21	gltestperf	23:10:21	0
1861352	99	49	43,4	cyclictest	1888171	-21	kworker/u4:8+events_unbound	21:10:02	1
1861352	99	49	40,6	cyclictest	2044065	-21	kworker/u4:3+events_unbound	00:25:59	1
1861351	99	49	42,6	cyclictest	1865112	-21	kworker/u4:7+events_unbound	20:47:59	0
1861351	99	49	42,5	cyclictest	1872758	-21	kworker/u4:14+events_unbound	21:02:58	0
1861351	99	49	33,10	cyclictest	0	-21	swapper/0	22:18:51	0
1861352	99	48	39,7	cyclictest	1906430	-21	unixbench_singl	21:25:40	1
1861352	99	48	39,5	cyclictest	0	-21	swapper/1	22:20:29	1
1861352	99	48	37,8	cyclictest	1999907	-21	/usr/sbin/munin	23:15:23	1
1861352	99	48	33,6	cyclictest	1872757	-21	kworker/u4:10+events_unbound	19:56:59	1
1861351	99	48	38,7	cyclictest	1905556	-21	diskmemload	21:25:19	0
1861352	99	47	40,5	cyclictest	1961486	-21	fschecks_time	22:30:24	1
1861352	99	47	39,6	cyclictest	2007831	-21	apt-get	23:25:10	1
1861352	99	47	37,7	cyclictest	0	-21	swapper/1	22:00:37	1
1861351	99	47	39,6	cyclictest	1970151	-21	/usr/sbin/munin	22:40:23	0
1861351	99	47	39,6	cyclictest	1926799	-21	aten_r7power_vo	21:50:17	0
1861351	99	47	26,18	cyclictest	0	-21	swapper/0	21:30:30	0
1861352	99	46	39,5	cyclictest	1866983	-21	gltestperf	19:30:23	1
1861351	99	46	39,6	cyclictest	1862561	-21	kworker/u4:12+events_unbound	19:27:43	0
1861351	99	46	39,5	cyclictest	1978800	-21	ntp_kernel_pll_	22:50:29	0
1861352	99	45	39,4	cyclictest	2038703	-21	proc_pri	00:00:36	1
1861352	99	45	39,4	cyclictest	1928733	-21	kworker/u4:5+events_unbound	21:56:59	1
1861352	99	45	35,7	cyclictest	0	-21	swapper/1	22:15:32	1
1861351	99	45	39,5	cyclictest	2014257	-21	kworker/u4:4+events_unbound	23:41:00	0
1861351	99	45	38,5	cyclictest	2043069	-21	grep	00:05:37	0
1861351	99	45	38,5	cyclictest	1868879	-21	kworker/u4:3+events_unbound	20:33:01	0
1861351	99	45	38,5	cyclictest	1849065	-21	kworker/u4:13+events_unbound	19:45:02	0
1861351	99	45	37,6	cyclictest	1865109	-21	kworker/u4:0+events_unbound	20:04:02	0
1861351	99	45	36,7	cyclictest	1896691	-21	aten_r7power_po	21:15:16	0
1861351	99	45	25,14	cyclictest	21	1	irq_work/0	21:40:28	0
1861352	99	44	36,5	cyclictest	1910686	-21	unixbench_multi	21:30:38	1
1861351	99	44	8,5	cyclictest	15	1	ktimers/0	20:20:00	0
1861351	99	44	37,6	cyclictest	1862561	-21	kworker/u4:12+events_unbound	19:36:01	0
1861351	99	44	37,5	cyclictest	1966482	-21	timerandwakeup	22:35:44	0
1861351	99	44	37,5	cyclictest	1849065	-21	kworker/u4:13+events_unbound	19:41:57	0
1861351	99	44	37,5	cyclictest	0	-21	swapper/0	00:35:16	0
1861351	99	44	34,8	cyclictest	1872980	-21	aten2__	19:55:16	0
1861352	99	43	36,5	cyclictest	2016210	-21	latency_hist	23:35:02	1
1861352	99	43	35,6	cyclictest	2048404	-21	kworker/u4:7+events_unbound	00:30:36	1
1861352	99	43	35,6	cyclictest	0	-21	swapper/1	22:40:41	1
1861352	99	43	34,6	cyclictest	1849065	-21	kworker/u4:13-rpciod	20:15:41	1
1861352	99	43	33,8	cyclictest	1901581	-21	ntp_kernel_pll_	21:20:27	1
1861351	99	43	36,5	cyclictest	1862560	-21	kworker/u4:11+events_unbound	19:30:30	0
1861351	99	43	33,8	cyclictest	1974081	-21	df_abs	22:45:16	0
1861351	99	43	22,19	cyclictest	0	-21	swapper/0	23:00:14	0
1861352	99	42	35,5	cyclictest	2050745	-21	basename	00:15:16	1
1861352	99	42	35,5	cyclictest	2050745	-21	basename	00:15:16	1
1861352	99	42	35,5	cyclictest	1887442	-21	fschecks_time	20:50:27	1
1861352	99	42	35,5	cyclictest	1875613	-21	aten2__	20:05:19	1
1861352	99	42	35,5	cyclictest	1871562	-21	apt-key	19:50:02	1
1861352	99	42	35,5	cyclictest	1863122	-21	gltestperf	19:15:19	1
1861352	99	42	34,5	cyclictest	1879149	-21	kworker/u4:9+rpciod	20:20:20	1
1861352	99	41	34,5	cyclictest	1877803	-21	unixbench_multi	20:10:38	1
1861352	99	41	32,6	cyclictest	0	-21	swapper/1	21:40:31	1
1861352	99	41	30,8	cyclictest	0	-21	swapper/1	19:20:16	1
1861351	99	41	34,5	cyclictest	1879652	-21	fschecks_count	20:20:19	0
1861352	99	40	33,4	cyclictest	0	-21	swapper/1	20:40:38	1
1861352	99	40	32,5	cyclictest	1880439	-21	kworker/u4:20+rpciod	20:30:20	1
1861351	99	40	31,6	cyclictest	0	-21	swapper/0	19:20:35	0
1861352	99	39	31,6	cyclictest	1889449	-21	cron	20:59:59	1
1861351	99	39	29,7	cyclictest	0	-21	swapper/0	19:10:02	0
1861352	99	37	31,4	cyclictest	1860087	-21	kworker/u4:4-rpciod	19:10:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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