OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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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 Sun Apr 05, 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
1759768	99	102	41,53	cyclictest	1759766	-21	awk	07:09:59	0
1759768	99	98	90,6	cyclictest	1937096	-21	kworker/u4:1+events_unbound	12:09:50	0
1759768	99	92	83,6	cyclictest	1889060	-21	kworker/u4:13+events_unbound	11:19:45	0
1759768	99	91	83,5	cyclictest	1958763	-21	kworker/u4:7+events_unbound	12:24:56	0
1759768	99	91	83,5	cyclictest	1958763	-21	kworker/u4:7+events_unbound	12:24:56	0
1759769	99	89	68,18	cyclictest	53	-21	kswapd0	12:25:08	1
1759769	99	83	75,6	cyclictest	1863237	-21	kworker/u4:6+events_unbound	10:34:36	1
1759768	99	78	68,7	cyclictest	1776329	-21	kworker/u4:0+events_unbound	08:15:01	0
1759769	99	76	41,32	cyclictest	0	-21	swapper/1	08:35:30	1
1759768	99	72	65,5	cyclictest	1760987	-21	kworker/u4:2+events_unbound	08:05:01	0
1759768	99	72	64,6	cyclictest	1789213	-21	kworker/u4:17+events_unbound	09:20:01	0
1759768	99	71	62,5	cyclictest	1963183	-21	kworker/u4:2+events_unbound	12:30:01	0
1759768	99	70	42,25	cyclictest	256	50	irq/23-42890000.ethernet	09:05:10	0
1759769	99	68	35,31	cyclictest	1925961	-21	aten_r7power_cu	11:45:15	1
1759769	99	68	35,31	cyclictest	1925961	-21	aten_r7power_cu	11:45:15	1
1759769	99	67	43,21	cyclictest	315	-21	systemd-journal	12:34:57	1
1759768	99	67	54,10	cyclictest	53	-21	kswapd0	10:10:09	0
1759769	99	66	4,15	cyclictest	1943399	-21	ssh	12:05:13	1
1759769	99	66	28,35	cyclictest	0	-21	swapper/1	11:00:19	1
1759769	99	66	26,36	cyclictest	0	-21	swapper/1	10:10:41	1
1759769	99	65	34,28	cyclictest	0	-21	swapper/1	12:00:30	1
1759769	99	65	34,27	cyclictest	0	-21	swapper/1	08:00:23	1
1759769	99	65	31,31	cyclictest	0	-21	swapper/1	12:35:29	1
1759769	99	65	28,34	cyclictest	0	-21	swapper/1	09:40:34	1
1759768	99	65	57,6	cyclictest	1849247	-21	kworker/u4:9+events_unbound	10:20:00	0
1759769	99	64	31,30	cyclictest	0	-21	swapper/1	11:35:20	1
1759769	99	64	1,17	cyclictest	1878903	-21	ssh	10:50:30	1
1759768	99	64	6,51	cyclictest	1790613	-21	diskmemload	10:45:10	0
1759769	99	63	51,9	cyclictest	1768692	-21	systemd	07:44:13	1
1759769	99	63	30,30	cyclictest	1934694	-21	aten_r7power_cu	11:55:14	1
1759769	99	63	28,31	cyclictest	0	-21	swapper/1	10:35:26	1
1759769	99	63	28,31	cyclictest	0	-21	swapper/1	10:05:29	1
1759769	99	63	27,32	cyclictest	0	-21	swapper/1	09:10:14	1
1759769	99	63	26,33	cyclictest	0	-21	swapper/1	09:50:30	1
1759769	99	63	2,20	cyclictest	1830869	-21	ntpq	09:55:26	1
1759768	99	63	55,6	cyclictest	1801878	-21	kworker/u4:7+events_unbound	09:29:27	0
1759769	99	62	33,25	cyclictest	1893397	-21	kworker/u4:0-rpciod	11:25:20	1
1759769	99	62	30,29	cyclictest	0	-21	swapper/1	10:30:01	1
1759769	99	62	29,30	cyclictest	0	-21	swapper/1	11:40:28	1
1759769	99	62	25,34	cyclictest	1819600	-21	kworker/u4:13+rpciod	10:00:16	1
1759768	99	62	54,5	cyclictest	1914882	-21	kworker/u4:4+events_unbound	11:34:45	0
1759768	99	62	29,21	cyclictest	1790617	-21	apt-get	09:10:10	0
1759769	99	61	50,7	cyclictest	1948639	-21	ntp_states	12:10:33	1
1759769	99	61	4,10	cyclictest	1891022	-21	ssh	11:05:11	1
1759769	99	61	31,27	cyclictest	0	-21	swapper/1	09:15:15	1
1759769	99	61	27,31	cyclictest	0	-21	swapper/1	09:45:39	1
1759769	99	61	23,35	cyclictest	0	-21	swapper/1	09:35:11	1
1759769	99	61	22,34	cyclictest	0	-21	swapper/1	10:55:31	1
1759769	99	60	52,5	cyclictest	1777602	-21	kworker/u4:5+events_unbound	08:20:02	1
1759769	99	60	25,32	cyclictest	0	-21	swapper/1	09:20:33	1
1759769	99	60	24,33	cyclictest	0	-21	swapper/1	10:40:29	1
1759768	99	60	52,6	cyclictest	1941588	-21	kworker/u4:3+events_unbound	12:19:55	0
1759769	99	59	28,28	cyclictest	0	-21	swapper/1	12:20:04	1
1759769	99	59	28,28	cyclictest	0	-21	swapper/1	12:20:04	1
1759769	99	59	27,29	cyclictest	0	-21	swapper/1	09:30:23	1
1759769	99	59	25,31	cyclictest	1788457	-21	fschecks_time	09:00:19	1
1759769	99	59	22,34	cyclictest	0	-21	swapper/1	12:15:28	1
1759768	99	59	48,6	cyclictest	1889061	-21	kworker/u4:14+events_unbound	11:25:00	0
1759769	99	58	47,9	cyclictest	1786654	-21	systemd	08:54:22	1
1759769	99	58	33,22	cyclictest	1745785	-21	kworker/u4:10-rpciod	07:10:18	1
1759769	99	58	30,25	cyclictest	1889061	-21	kworker/u4:14-nfsiod	11:35:01	1
1759769	99	58	26,29	cyclictest	0	-21	swapper/1	11:18:16	1
1759769	99	58	19,37	cyclictest	1904179	-21	cpu	11:20:15	1
1759768	99	58	51,5	cyclictest	1784532	-21	fschecks_time	08:45:19	0
1759769	99	57	47,8	cyclictest	1781460	-21	systemd	08:34:19	1
1759769	99	57	25,28	cyclictest	0	-21	swapper/1	10:20:33	1
1759769	99	57	2,16	cyclictest	1804058	-21	/usr/sbin/munin	09:25:31	1
1759769	99	56	27,27	cyclictest	0	-21	swapper/1	10:45:41	1
1759769	99	56	26,27	cyclictest	0	-21	swapper/1	10:15:27	1
1759768	99	56	44,7	cyclictest	0	-21	swapper/0	11:40:25	0
1759769	99	55	22,31	cyclictest	0	-21	swapper/1	08:50:01	1
1759769	99	55	22,29	cyclictest	0	-21	swapper/1	07:15:25	1
1759768	99	55	48,5	cyclictest	1949861	-21	kworker/u4:16+events_unbound	12:14:54	0
1759768	99	55	46,7	cyclictest	1932670	-21	kworker/u4:0+events_unbound	11:59:49	0
1759768	99	55	42,11	cyclictest	1824005	-21	kworker/u4:3+events_unbound	09:50:14	0
1759769	99	54	24,27	cyclictest	0	-21	swapper/1	08:20:37	1
1759769	99	54	21,30	cyclictest	0	-21	swapper/1	07:50:16	1
1759769	99	54	18,4	cyclictest	0	-21	swapper/1	07:20:17	1
1759769	99	54	17,6	cyclictest	0	-21	swapper/1	07:55:20	1
1759768	99	54	46,5	cyclictest	1845458	-21	kworker/u4:4+events_unbound	10:28:59	0
1759768	99	54	45,6	cyclictest	1816835	-21	latency_hist	09:40:01	0
1759769	99	53	24,26	cyclictest	0	-21	swapper/1	09:05:25	1
1759769	99	53	22,28	cyclictest	0	-21	swapper/1	08:45:01	1
1759768	99	53	47,4	cyclictest	1928219	-21	kworker/u4:9+events_unbound	12:35:00	0
1759768	99	53	44,6	cyclictest	1871506	-21	kworker/u4:1+events_unbound	10:44:36	0
1759768	99	53	4,34	cyclictest	1830875	-21	ssh	09:55:25	0
1759769	99	52	19,4	cyclictest	0	-21	swapper/1	08:10:38	1
1759769	99	52	16,4	cyclictest	0	-21	swapper/1	07:45:24	1
1759769	99	52	14,7	cyclictest	1779594	-21	uname	08:25:20	1
1759768	99	52	44,6	cyclictest	1836639	-21	kworker/u4:9+events_unbound	10:04:57	0
1759768	99	52	44,6	cyclictest	1810728	-21	kworker/u4:3+events_unbound	09:32:59	0
1759769	99	51	23,25	cyclictest	0	-21	swapper/1	11:50:14	1
1759769	99	51	18,7	cyclictest	0	-21	swapper/1	07:40:02	1
1759769	99	51	18,7	cyclictest	0	-21	swapper/1	07:40:01	1
1759769	99	51	15,7	cyclictest	1895911	-21	ssh	11:10:23	1
1759769	99	51	15,7	cyclictest	1895911	-21	ssh	11:10:23	1
1759768	99	51	42,6	cyclictest	1800793	-21	diskmemload	09:20:37	0
1759768	99	51	21,20	cyclictest	256	50	irq/23-42890000.ethernet	08:50:09	0
1759769	99	50	2,17	cyclictest	1766100	-21	awk	07:30:39	1
1759768	99	50	43,5	cyclictest	1930498	-21	sed	11:50:17	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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