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 376 highest latencies:

System rack7slot2.osadl.org (updated Fri Jan 23, 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
1692636	99	115	101,6	cyclictest	1742815	-21	kworker/u4:7+events_unbound	21:47:33	0
1692639	99	99	90,6	cyclictest	1747135	-21	kworker/u4:8+events_unbound	21:37:31	1
1692639	99	92	84,6	cyclictest	1772518	-21	kworker/u4:5+events_unbound	22:17:44	1
1692639	99	92	84,6	cyclictest	1772518	-21	kworker/u4:5+events_unbound	22:17:44	1
1692639	99	91	83,6	cyclictest	1852476	-21	kworker/u4:1+events_unbound	00:08:01	1
1692636	99	90	82,6	cyclictest	1693841	-21	kworker/u4:4+events_unbound	19:27:12	0
1692636	99	90	76,6	cyclictest	1696397	-21	kworker/u4:5+events_unbound	19:22:11	0
1692636	99	88	76,9	cyclictest	54	-21	kswapd0	23:25:10	0
1692636	99	86	78,6	cyclictest	1702801	-21	kworker/u4:5+events_unbound	20:07:17	0
1692636	99	82	74,6	cyclictest	1698914	-21	kworker/u4:2+events_unbound	19:32:13	0
1692639	99	81	73,6	cyclictest	1823411	-21	kworker/u4:4+events_unbound	23:17:51	1
1692639	99	81	66,5	cyclictest	1802069	-21	kworker/u4:7+events_unbound	22:47:47	1
1692639	99	76	69,5	cyclictest	1890029	-21	kworker/u4:8+events_unbound	00:38:05	1
1692639	99	76	68,6	cyclictest	1763837	-21	kworker/u4:16+events_unbound	21:57:39	1
1692636	99	76	69,5	cyclictest	1718050	-21	kworker/u4:12+events_unbound	20:47:22	0
1692636	99	72	58,11	cyclictest	1750176	-21	sort	21:40:37	0
1692636	99	69	62,5	cyclictest	1718048	-21	kworker/u4:6+events_unbound	21:02:25	0
1692636	99	69	62,5	cyclictest	1715509	-21	kworker/u4:4+events_unbound	20:37:22	0
1692639	99	68	62,4	cyclictest	1718048	-21	kworker/u4:6+events_unbound	20:55:01	1
1692636	99	68	7,17	cyclictest	1723148	-21	diskmemload	22:50:13	0
1692639	99	67	60,5	cyclictest	1776865	-21	kworker/u4:10+events_unbound	22:37:45	1
1692636	99	67	56,7	cyclictest	1723221	-21	latency_hist	21:10:02	0
1692636	99	67	45,17	cyclictest	54	-21	kswapd0	22:45:08	0
1692636	99	65	58,5	cyclictest	1702802	-21	kworker/u4:7+events_unbound	19:57:18	0
1692636	99	64	43,17	cyclictest	1879303	-21	sh	00:15:00	0
1692639	99	63	42,11	cyclictest	1808635	-21	ssh	22:50:08	1
1692636	99	62	55,5	cyclictest	1863774	-21	proc_pri	23:55:35	0
1692636	99	62	40,9	cyclictest	0	-21	swapper/0	00:00:32	0
1692639	99	61	54,5	cyclictest	1772520	-21	kworker/u4:8+events_unbound	22:07:43	1
1692639	99	61	49,7	cyclictest	0	-21	swapper/1	21:45:29	1
1692639	99	61	45,5	cyclictest	1738445	-21	kworker/u4:0+events_unbound	21:42:32	1
1692636	99	61	53,5	cyclictest	1702797	-21	kworker/u4:0+events_unbound	19:50:01	0
1692639	99	60	54,4	cyclictest	1715514	-21	kworker/u4:10+events_unbound	20:45:01	1
1692636	99	60	42,15	cyclictest	1723148	-21	diskmemload	22:05:29	0
1692639	99	59	51,6	cyclictest	1742815	-21	kworker/u4:7+events_unbound	21:33:42	1
1692639	99	59	46,11	cyclictest	54	-21	kswapd0	00:15:12	1
1692636	99	59	24,26	cyclictest	255	50	irq/23-42890000.ethernet	22:15:29	0
1692636	99	59	24,26	cyclictest	255	50	irq/23-42890000.ethernet	22:15:29	0
1692636	99	58	48,5	cyclictest	0	-21	swapper/0	00:15:08	0
1692639	99	57	44,6	cyclictest	1738445	-21	kworker/u4:0+events_unbound	22:00:41	1
1692639	99	56	49,5	cyclictest	1776863	-21	kworker/u4:6+events_unbound	22:27:44	1
1692639	99	56	48,5	cyclictest	1863890	-21	switchtime	23:55:36	1
1692636	99	56	9,25	cyclictest	1830184	-21	ssh	23:15:24	0
1692636	99	56	49,5	cyclictest	1839749	-21	kworker/u4:13+events_unbound	23:51:43	0
1692636	99	56	49,5	cyclictest	1747137	-21	kworker/u4:10+events_unbound	21:37:59	0
1692636	99	56	44,5	cyclictest	1781193	-21	kworker/u4:3+events_unbound	23:06:00	0
1692636	99	56	43,9	cyclictest	1692635	-21	cyclictest	22:44:54	0
1692639	99	55	47,6	cyclictest	1719310	-21	kworker/u4:3+events_unbound	20:57:23	1
1692639	99	55	38,11	cyclictest	0	-21	swapper/1	22:10:31	1
1692636	99	55	49,5	cyclictest	1785496	-21	kworker/u4:2+events_unbound	22:28:00	0
1692636	99	55	49,4	cyclictest	1885779	-21	kworker/u4:14+events_unbound	00:37:59	0
1692639	99	54	46,6	cyclictest	1878098	-21	systemd	00:13:00	1
1692636	99	54	46,6	cyclictest	1738446	-21	kworker/u4:1+events_unbound	21:55:04	0
1692636	99	54	44,7	cyclictest	1823411	-21	kworker/u4:4-rpciod	23:30:14	0
1692636	99	54	44,4	cyclictest	1706603	-21	kworker/u4:6+events_unbound	20:03:43	0
1692636	99	54	40,6	cyclictest	1806363	-21	kworker/u4:8+events_unbound	23:02:00	0
1692639	99	53	47,4	cyclictest	1706598	-21	kworker/u4:0+events_unbound	20:30:01	1
1692639	99	53	47,4	cyclictest	1696399	-21	kworker/u4:9+events_unbound	19:35:01	1
1692639	99	53	46,5	cyclictest	1701455	-21	kworker/u4:13+events_unbound	20:00:01	1
1692639	99	53	45,6	cyclictest	1721848	-21	kworker/u4:10+events_unbound	21:07:25	1
1692639	99	53	41,7	cyclictest	0	-21	swapper/1	21:25:39	1
1692636	99	53	3,21	cyclictest	1760436	-21	ssh	21:53:03	0
1692636	99	53	28,20	cyclictest	1783798	-21	interrupts	22:20:21	0
1692639	99	52	45,5	cyclictest	1839749	-21	kworker/u4:13+events_unbound	23:30:01	1
1692639	99	52	45,5	cyclictest	1822094	-21	ssh	23:05:35	1
1692639	99	52	42,8	cyclictest	1700175	-21	systemd	19:37:13	1
1692636	99	52	5,14	cyclictest	54	-21	kswapd0	22:10:08	0
1692636	99	52	45,5	cyclictest	1789788	-21	kworker/u4:8+events_unbound	22:36:00	0
1692636	99	52	44,6	cyclictest	1827690	-21	kworker/u4:0+events_unbound	23:22:00	0
1692636	99	52	33,15	cyclictest	255	50	irq/23-42890000.ethernet	23:10:11	0
1692639	99	51	45,5	cyclictest	1719310	-21	kworker/u4:3+events_unbound	21:23:59	1
1692639	99	51	44,5	cyclictest	1701455	-21	kworker/u4:13+events_unbound	19:45:12	1
1692639	99	51	44,4	cyclictest	1680357	-21	kworker/u4:11+events_unbound	19:20:00	1
1692639	99	51	43,5	cyclictest	1781193	-21	kworker/u4:3+events_unbound	23:02:59	1
1692639	99	51	32,6	cyclictest	1806363	-21	kworker/u4:8+events_unbound	22:56:43	1
1692636	99	51	44,5	cyclictest	1814927	-21	kworker/u4:11+events_unbound	22:59:43	0
1692636	99	51	44,5	cyclictest	1737333	-21	mailstats	21:25:39	0
1692636	99	51	42,6	cyclictest	1875213	-21	latency_hist	00:10:01	0
1692639	99	50	43,5	cyclictest	1794080	-21	kworker/u4:12+events_unbound	22:40:59	1
1692639	99	50	43,5	cyclictest	1757969	-21	fschecks_count	21:50:19	1
1692636	99	50	43,5	cyclictest	1718048	-21	kworker/u4:6+events_unbound	20:53:59	0
1692636	99	50	42,6	cyclictest	1848227	-21	kworker/u4:17+events_unbound	23:41:00	0
1692636	99	50	40,8	cyclictest	1732916	-21	ntp_offset	21:20:34	0
1692636	99	50	39,7	cyclictest	1766196	-21	ssh	22:00:12	0
1692636	99	50	30,17	cyclictest	1720617	-21	munin-run	21:00:00	0
1692639	99	49	43,5	cyclictest	1718050	-21	kworker/u4:12+events_unbound	21:12:24	1
1692639	99	49	43,4	cyclictest	1784206	-21	sendmail_mailqu	22:20:35	1
1692639	99	49	40,7	cyclictest	1828001	-21	sshd	23:12:50	1
1692636	99	49	42,5	cyclictest	1792139	-21	gltestperf	22:30:21	0
1692636	99	49	42,5	cyclictest	1715509	-21	kworker/u4:4+events_unbound	20:40:43	0
1692636	99	49	41,5	cyclictest	1727427	-21	ssh	21:15:00	0
1692639	99	48	41,5	cyclictest	1792516	-21	ntp_offset	22:30:32	1
1692639	99	48	41,5	cyclictest	1728243	-21	gltestperf	21:15:22	1
1692636	99	48	39,7	cyclictest	1692831	-21	aten_r7power_cu	19:10:14	0
1692636	99	48	38,7	cyclictest	1694115	-21	aten_r7power_en	19:15:15	0
1692636	99	48	36,6	cyclictest	1709196	-21	kworker/u4:1+events_unbound	20:11:59	0
1692636	99	48	15,20	cyclictest	1718050	-21	kworker/u4:12+xprtiod	21:15:21	0
1692636	99	47	39,6	cyclictest	1703050	-21	aten_r7power_cu	19:50:14	0
1692636	99	47	33,10	cyclictest	0	-21	swapper/0	20:35:00	0
1692639	99	46	39,5	cyclictest	1896094	-21	latency_hist	00:35:01	1
1692639	99	46	39,5	cyclictest	1839749	-21	kworker/u4:13+events_unbound	23:39:43	1
1692639	99	46	38,6	cyclictest	1721933	-21	latency_hist	21:05:06	1
1692639	99	46	29,5	cyclictest	1852476	-21	kworker/u4:1+events_unbound	23:44:46	1
1692636	99	46	39,5	cyclictest	1702802	-21	kworker/u4:7+events_unbound	20:21:00	0
1692636	99	46	18,6	cyclictest	17	1	rcu_preempt	23:48:10	0
1692639	99	45	39,4	cyclictest	1889181	-21	diskmemload	00:25:39	1
1692639	99	45	38,5	cyclictest	1827690	-21	kworker/u4:0+events_unbound	23:32:33	1
1692639	99	45	37,6	cyclictest	1867144	-21	aten2__	00:00:17	1
1692639	99	45	36,6	cyclictest	0	-21	swapper/1	00:23:02	1
1692636	99	45	39,5	cyclictest	1696399	-21	kworker/u4:9+events_unbound	19:36:00	0
1692636	99	45	34,5	cyclictest	1869397	-21	kworker/u4:9+events_unbound	00:23:14	0
1692636	99	45	17,13	cyclictest	17	1	rcu_preempt	00:26:35	0
1692639	99	44	4,25	cyclictest	1834488	-21	ssh	23:20:30	1
1692639	99	44	35,7	cyclictest	0	-21	swapper/1	23:50:25	1
1692639	99	44	31,5	cyclictest	1698914	-21	kworker/u4:2+events_unbound	19:56:02	1
1692636	99	44	35,6	cyclictest	1719310	-21	kworker/u4:3-rpciod	21:30:34	0
1692639	99	43	36,5	cyclictest	1713439	-21	fschecks_count	20:30:19	1
1692639	99	43	27,6	cyclictest	1695103	-21	kworker/u4:7+events_unbound	19:40:20	1
1692636	99	43	35,6	cyclictest	1712234	-21	fschecks_time	20:25:19	0
1692636	99	43	34,7	cyclictest	1701588	-21	latency_hist	19:45:01	0
1692639	99	42	35,5	cyclictest	1708456	-21	fschecks_time	20:10:25	1
1692639	99	42	35,4	cyclictest	1693275	-21	kernelversion	19:10:20	1
1692639	99	42	32,7	cyclictest	1695476	-21	aten_r7power_vo	19:20:16	1
1692636	99	42	35,5	cyclictest	1847078	-21	ntpq	23:35:34	0
1692636	99	42	34,6	cyclictest	1710322	-21	unixbench-2d	20:15:37	0
1692639	99	41	35,4	cyclictest	0	-21	swapper/1	20:05:19	1
1692639	99	41	34,5	cyclictest	1855797	-21	unixbench_multi	23:45:40	1
1692639	99	41	34,5	cyclictest	1703346	-21	fschecks_time	19:50:18	1
1692639	99	41	32,6	cyclictest	0	-21	swapper/1	20:20:37	1
1692639	99	41	32,6	cyclictest	0	-21	swapper/1	19:10:01	1
1692639	99	41	31,8	cyclictest	1715575	-21	sendmail	20:40:00	1
1692639	99	41	31,7	cyclictest	0	-21	swapper/1	19:25:16	1
1692636	99	41	31,8	cyclictest	1892727	-21	if_eth0	00:30:25	0
1692636	99	40	31,7	cyclictest	1692671	-21	latency_hist	19:10:01	0
1692639	99	39	32,5	cyclictest	1718113	-21	grep	20:50:00	1
1692639	99	39	28,8	cyclictest	0	-21	swapper/1	20:15:20	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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