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 Sat Aug 15, 2026 12:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1522736	99	108	100,5	cyclictest	1525236	-21	kworker/u4:7+events_unbound	07:30:02	1
1522735	99	107	79,18	cyclictest	1618263	-21	kworker/u4:5+events_unbound	11:40:54	0
1522736	99	92	5,32	cyclictest	1735632	-21	ssh	12:35:28	1
1522736	99	90	2,49	cyclictest	1656504	-21	ssh	11:05:35	1
1522736	99	87	75,9	cyclictest	1540734	-21	kworker/u4:14+events_unbound	08:55:25	1
1522735	99	87	75,10	cyclictest	53	-21	kswapd0	09:55:34	0
1522735	99	76	27,21	cyclictest	1678486	-21	ntpq	11:30:32	0
1522736	99	75	67,6	cyclictest	1540734	-21	kworker/u4:14+events_unbound	08:40:22	1
1522735	99	75	63,9	cyclictest	1613734	-21	kworker/u4:1+events_unbound	10:25:38	0
1522735	99	74	35,14	cyclictest	1537126	-21	apt-get	08:05:12	0
1522735	99	73	32,14	cyclictest	1704111	-21	apt-get	12:00:13	0
1522735	99	73	32,12	cyclictest	1542238	-21	apt-get	08:25:12	0
1522735	99	73	31,15	cyclictest	1533291	-21	apt-get	07:50:13	0
1522735	99	72	64,6	cyclictest	1307947	-21	kworker/u4:5+events_unbound	07:25:00	0
1522735	99	72	58,8	cyclictest	1646538	-21	awk	10:55:00	0
1522735	99	71	34,11	cyclictest	1544866	-21	apt-get	08:35:12	0
1522735	99	70	63,5	cyclictest	1582966	-21	kworker/u4:6+events_unbound	09:49:59	0
1522735	99	70	56,11	cyclictest	53	-21	kswapd0	12:10:10	0
1522735	99	69	20,23	cyclictest	1543572	-21	munin-node	08:30:11	0
1522736	99	66	59,5	cyclictest	1525236	-21	kworker/u4:7+events_unbound	07:40:03	1
1522736	99	66	53,7	cyclictest	1726159	-21	wget	12:25:15	1
1522735	99	65	34,4	cyclictest	1539665	-21	apt-get	08:15:13	0
1522735	99	65	34,4	cyclictest	1539665	-21	apt-get	08:15:13	0
1522735	99	64	22,16	cyclictest	1674093	-21	ntpq	11:25:33	0
1522736	99	63	55,5	cyclictest	1627176	-21	kworker/u4:0+events_unbound	10:40:42	1
1522736	99	63	47,7	cyclictest	1569501	-21	kworker/u4:12+events_unbound	09:30:31	1
1522736	99	62	52,6	cyclictest	1526539	-21	kworker/u4:2+events_unbound	07:50:05	1
1522735	99	62	38,19	cyclictest	1616904	-21	ssh	10:20:37	0
1522735	99	62	36,20	cyclictest	1589973	-21	ssh	09:50:22	0
1522735	99	62	28,6	cyclictest	1660036	-21	apt-get	11:10:16	0
1522735	99	62	25,11	cyclictest	1530391	-21	apt-get	07:40:09	0
1522735	99	61	41,15	cyclictest	1599296	-21	ps	10:00:40	0
1522735	99	61	23,13	cyclictest	1639890	-21	ssh	10:46:28	0
1522735	99	61	21,16	cyclictest	1571672	-21	ssh	09:30:02	0
1522735	99	60	50,6	cyclictest	256	50	irq/23-42890000.ethernet	12:20:12	0
1522735	99	60	23,17	cyclictest	1669630	-21	ntpq	11:20:32	0
1522735	99	60	21,11	cyclictest	1605800	-21	ssh	10:08:23	0
1522735	99	60	19,21	cyclictest	1576905	-21	ntpq	09:35:27	0
1522735	99	60	19,21	cyclictest	1576905	-21	ntpq	09:35:26	0
1522735	99	60	17,25	cyclictest	1554939	-21	ntpq	09:10:34	0
1522735	99	60	17,25	cyclictest	1554939	-21	ntpq	09:10:34	0
1522735	99	60	15,23	cyclictest	1727019	-21	/usr/sbin/munin	12:25:37	0
1522736	99	59	51,5	cyclictest	1540735	-21	kworker/u4:15+events_unbound	08:35:19	1
1522735	99	59	50,7	cyclictest	1587452	-21	kworker/u4:3-rpciod	10:15:40	0
1522735	99	59	20,20	cyclictest	1717538	-21	ssh	12:15:18	0
1522735	99	59	20,15	cyclictest	1648531	-21	ssh	10:56:18	0
1522735	99	59	20,14	cyclictest	1657282	-21	ssh	11:06:10	0
1522735	99	59	19,15	cyclictest	1560375	-21	ssh	09:16:25	0
1522736	99	58	50,5	cyclictest	0	-21	swapper/1	12:20:14	1
1522735	99	58	23,10	cyclictest	1536486	-21	ntpq	08:00:32	0
1522735	99	58	21,14	cyclictest	1552935	-21	df_inode	09:05:22	0
1522735	99	58	21,12	cyclictest	1532653	-21	ntpq	07:45:36	0
1522735	99	58	21,11	cyclictest	1565610	-21	ssh	09:22:40	0
1522735	99	58	21,10	cyclictest	1732568	-21	ssh	12:31:48	0
1522736	99	57	41,10	cyclictest	0	-21	swapper/1	07:25:01	1
1522735	99	57	22,12	cyclictest	1735779	-21	ssh	12:35:35	0
1522735	99	57	19,19	cyclictest	1625767	-21	find	10:30:38	0
1522735	99	57	19,14	cyclictest	1651175	-21	/usr/sbin/munin	11:00:37	0
1522735	99	57	14,20	cyclictest	1525237	-21	kworker/u4:8+rpciod	07:20:01	0
1522736	99	56	49,4	cyclictest	0	-21	swapper/1	09:40:44	1
1522736	99	56	47,6	cyclictest	37	-21	kcompactd0	10:25:30	1
1522736	99	56	40,11	cyclictest	1615755	-21	date	10:20:01	1
1522735	99	56	35,17	cyclictest	1551913	-21	ntpq	09:00:33	0
1522735	99	56	35,15	cyclictest	1665178	-21	ssh	11:15:30	0
1522735	99	56	22,12	cyclictest	1542077	-21	munin-run	08:25:00	0
1522735	99	56	19,11	cyclictest	1546705	-21	ntpq	08:40:25	0
1522735	99	56	18,14	cyclictest	1636022	-21	ssh	10:42:20	0
1522735	99	56	17,12	cyclictest	1073	-21	snmpd	11:52:18	0
1522735	99	56	13,23	cyclictest	1570567	-21	ssh	09:28:34	0
1522736	99	55	7,30	cyclictest	0	-21	swapper/1	07:40:09	1
1522736	99	55	48,5	cyclictest	1643704	-21	unixbench_multi	10:50:43	1
1522736	99	55	46,6	cyclictest	0	-21	swapper/1	10:55:13	1
1522735	99	55	39,13	cyclictest	1682073	-21	apt-get	11:35:14	0
1522735	99	55	22,12	cyclictest	1607857	-21	ntpq	10:10:30	0
1522735	99	55	22,11	cyclictest	1700311	-21	memory	11:55:24	0
1522735	99	55	20,10	cyclictest	1529829	-21	ntpq	07:35:26	0
1522735	99	55	15,21	cyclictest	1581374	-21	ssh	09:40:29	0
1522736	99	54	6,32	cyclictest	1696045	-21	ssh	11:50:28	1
1522736	99	54	47,5	cyclictest	1717555	-21	/usr/sbin/munin	12:15:20	1
1522736	99	54	47,5	cyclictest	1662375	-21	kworker/u4:4+events_unbound	11:15:48	1
1522736	99	54	45,6	cyclictest	1613737	-21	kworker/u4:9+events_unbound	10:30:40	1
1522735	99	54	49,3	cyclictest	0	-21	swapper/0	12:05:29	0
1522735	99	54	37,11	cyclictest	1538931	-21	ntpq	08:10:23	0
1522735	99	54	33,16	cyclictest	1550584	-21	ntpq	08:55:31	0
1522735	99	54	24,9	cyclictest	0	-21	swapper/0	08:50:00	0
1522736	99	53	45,5	cyclictest	1713927	-21	/usr/sbin/munin	12:10:44	1
1522735	99	53	27,9	cyclictest	1523107	-21	df_inode	07:10:17	0
1522735	99	53	27,7	cyclictest	1534787	-21	diskstats	07:55:18	0
1522735	99	53	24,12	cyclictest	1691854	-21	wc	11:45:37	0
1522735	99	53	18,10	cyclictest	1527192	-21	if_eth0	07:25:20	0
1522736	99	52	45,5	cyclictest	1669261	-21	fschecks_time	11:20:20	1
1522736	99	52	41,8	cyclictest	1585401	-21	fschecks_count	09:45:20	1
1522736	99	52	32,12	cyclictest	0	-21	swapper/1	11:55:27	1
1522736	99	51	6,34	cyclictest	1704929	-21	ssh	12:00:33	1
1522736	99	51	43,6	cyclictest	1587450	-21	kworker/u4:1+events_unbound	10:07:46	1
1522736	99	51	43,6	cyclictest	1526538	-21	kworker/u4:0+events_unbound	07:55:05	1
1522736	99	51	43,6	cyclictest	1522732	-21	cyclictest	11:35:41	1
1522736	99	51	42,6	cyclictest	53	-21	kswapd0	11:05:01	1
1522736	99	51	41,7	cyclictest	1523585	-21	ps	07:10:35	1
1522736	99	51	40,6	cyclictest	0	-21	swapper/1	08:10:30	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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