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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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 792 highest latencies:

System rack7slot2.osadl.org (updated Fri Nov 13, 2026 12:44:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1372239	99	103	88,7	cyclictest	1387517	-21	kworker/u4:0+events_unbound	08:09:09	1
1372239	99	101	94,5	cyclictest	1363187	-21	kworker/u4:5+events_unbound	07:18:59	1
1372238	99	98	5,35	cyclictest	1372214	-21	munin-run	07:10:01	0
1372239	99	96	88,6	cyclictest	1178473	-21	kworker/u4:9+events_unbound	07:13:58	1
1372239	99	95	88,5	cyclictest	1178473	-21	kworker/u4:9+events_unbound	07:59:04	1
1372238	99	94	84,7	cyclictest	1423247	-21	kworker/u4:16+events_unbound	09:34:24	0
1372239	99	93	86,5	cyclictest	1374742	-21	kworker/u4:6+events_unbound	07:39:01	1
1372239	99	88	81,5	cyclictest	1370965	-21	kworker/u4:4+events_unbound	07:34:01	1
1372238	99	82	34,45	cyclictest	1416820	-21	aten_r7power_en	09:25:15	0
1372238	99	80	53,23	cyclictest	1434668	-21	aten_r7power_po	09:45:15	0
1372238	99	79	68,8	cyclictest	1390072	-21	kworker/u4:14+events_unbound	08:34:10	0
1372239	99	77	61,10	cyclictest	1474433	-21	ls	10:30:17	1
1372239	99	77	50,14	cyclictest	0	-21	swapper/1	09:30:35	1
1372238	99	77	29,44	cyclictest	1451904	-21	munin-plugin-st	10:05:00	0
1372238	99	76	57,13	cyclictest	53	-21	kswapd0	11:40:08	0
1372238	99	75	36,36	cyclictest	1558175	-21	/usr/sbin/munin	12:05:23	0
1372238	99	73	64,6	cyclictest	1401660	-21	kworker/u4:0+events_unbound	09:14:20	0
1372238	99	73	35,35	cyclictest	1457782	-21	unixbench-2d	10:10:43	0
1372238	99	72	34,35	cyclictest	1399427	-21	aten_r7power_vo	08:55:15	0
1372238	99	71	61,7	cyclictest	0	-21	swapper/0	07:55:23	0
1372238	99	71	44,22	cyclictest	53	-21	kswapd0	09:50:08	0
1372238	99	71	21,10	cyclictest	1531206	-21	apt-get	11:35:11	0
1372239	99	70	63,5	cyclictest	1361888	-21	kworker/u4:11+events_unbound	08:34:13	1
1372238	99	70	65,3	cyclictest	1564293	-21	kworker/u4:1+events_unbound	12:34:59	0
1372238	99	69	36,30	cyclictest	1487375	-21	aten_r7power_en	10:45:15	0
1372239	99	67	55,8	cyclictest	0	-21	swapper/1	09:40:12	1
1372238	99	67	38,27	cyclictest	1372235	-21	cyclictest	11:50:36	0
1372238	99	67	33,31	cyclictest	0	-21	swapper/0	10:15:28	0
1372238	99	67	32,32	cyclictest	1372786	-21	gltestperf	07:10:18	0
1372238	99	67	32,31	cyclictest	1562490	-21	kernelversion	12:10:22	0
1372238	99	67	27,37	cyclictest	1431424	-21	unixbench_singl	09:40:44	0
1372238	99	67	26,36	cyclictest	1386270	-21	modprobe	08:05:00	0
1372238	99	67	24,5	cyclictest	256	50	irq/23-42890000.ethernet	10:35:16	0
1372238	99	66	32,32	cyclictest	1500990	-21	if_err_eth0	11:00:20	0
1372238	99	66	32,31	cyclictest	1398356	-21	fschecks_time	08:50:24	0
1372238	99	66	3,20	cyclictest	1571483	-21	ssh	12:20:28	0
1372238	99	66	31,31	cyclictest	0	-21	swapper/0	09:58:57	0
1372238	99	66	23,39	cyclictest	0	-21	swapper/0	10:40:36	0
1372239	99	65	43,17	cyclictest	317	-21	systemd-journal	12:29:56	1
1372238	99	65	31,31	cyclictest	0	-21	swapper/0	12:25:27	0
1372238	99	65	29,32	cyclictest	0	-21	swapper/0	11:45:42	0
1372238	99	65	29,32	cyclictest	0	-21	swapper/0	11:30:32	0
1372238	99	65	27,35	cyclictest	1519289	-21	/usr/sbin/munin	11:20:41	0
1372238	99	65	25,37	cyclictest	1387203	-21	mailstats	08:05:37	0
1372238	99	64	28,33	cyclictest	0	-21	swapper/0	11:10:28	0
1372238	99	64	28,33	cyclictest	0	-21	swapper/0	08:25:37	0
1372238	99	64	26,35	cyclictest	1376038	-21	kworker/u4:10-rpciod	07:50:22	0
1372238	99	64	25,36	cyclictest	1492974	-21	unixbench_singl	10:50:40	0
1372238	99	63	55,4	cyclictest	0	-21	swapper/0	10:20:38	0
1372238	99	63	30,30	cyclictest	1505551	-21	netstat	11:05:28	0
1372238	99	63	30,30	cyclictest	0	-21	swapper/0	12:00:35	0
1372238	99	63	28,32	cyclictest	0	-21	swapper/0	09:20:31	0
1372238	99	63	27,34	cyclictest	1452803	-21	netstat	10:05:23	0
1372238	99	63	26,33	cyclictest	0	-21	swapper/0	09:35:19	0
1372238	99	63	23,5	cyclictest	0	-21	swapper/0	11:25:23	0
1372238	99	63	2,11	cyclictest	1474090	-21	apt-get	10:30:10	0
1372238	99	63	14,12	cyclictest	1515825	-21	kworker/u4:1-rpciod	11:20:01	0
1372239	99	62	55,5	cyclictest	1485280	-21	kworker/u4:10+events_unbound	10:47:45	1
1372238	99	62	32,27	cyclictest	1411999	-21	diskmemload	09:20:00	0
1372238	99	62	28,31	cyclictest	1356734	-21	kworker/u4:3-xprtiod	08:10:37	0
1372238	99	62	27,33	cyclictest	256	50	irq/23-42890000.ethernet	11:55:25	0
1372239	99	61	6,39	cyclictest	1562712	-21	ssh	12:10:31	1
1372239	99	61	54,5	cyclictest	53	-21	kswapd0	10:55:01	1
1372239	99	61	54,4	cyclictest	0	-21	swapper/1	12:00:20	1
1372239	99	61	47,6	cyclictest	1356734	-21	kworker/u4:3+events_unbound	08:20:03	1
1372238	99	61	29,30	cyclictest	1564294	-21	kworker/u4:2-rpciod	12:15:17	0
1372239	99	60	53,5	cyclictest	1559819	-21	kworker/u4:5+events_unbound	12:09:54	1
1372238	99	60	27,30	cyclictest	0	-21	swapper/0	10:55:28	0
1372238	99	60	25,32	cyclictest	0	-21	swapper/0	09:05:16	0
1372238	99	60	25,31	cyclictest	0	-21	swapper/0	12:35:28	0
1372238	99	60	24,34	cyclictest	1372235	-21	cyclictest	08:20:38	0
1372239	99	59	50,7	cyclictest	378	-21	dbus-daemon	10:14:36	1
1372238	99	59	23,32	cyclictest	0	-21	swapper/0	07:40:39	0
1372238	99	58	25,28	cyclictest	0	-21	swapper/0	10:25:18	0
1372238	99	58	22,6	cyclictest	0	-21	swapper/0	08:35:37	0
1372239	99	57	45,8	cyclictest	37	-21	kcompactd0	12:35:01	1
1372238	99	57	22,32	cyclictest	1376336	-21	aten_r7power_po	07:25:14	0
1372238	99	57	21,34	cyclictest	1400700	-21	aten_r7power_po	09:00:15	0
1372238	99	57	20,5	cyclictest	0	-21	swapper/0	07:35:00	0
1372239	99	56	46,7	cyclictest	1470925	-21	unixbench-2d	10:25:39	1
1372238	99	56	21,6	cyclictest	0	-21	swapper/0	08:15:35	0
1372238	99	55	45,6	cyclictest	0	-21	swapper/0	07:35:26	0
1372239	99	54	48,4	cyclictest	1408243	-21	gltestperf	09:15:20	1
1372239	99	54	44,7	cyclictest	0	-21	swapper/1	09:50:40	1
1372239	99	53	38,8	cyclictest	53	-21	kswapd0	11:05:06	1
1372239	99	52	45,5	cyclictest	1528074	-21	unixbench_singl	11:30:36	1
1372239	99	52	42,8	cyclictest	1375324	-21	gltestperf	07:20:20	1
1372239	99	52	42,6	cyclictest	0	-21	swapper/1	09:49:30	1
1372239	99	51	44,5	cyclictest	1573228	-21	kworker/u4:11+events_unbound	12:38:45	1
1372239	99	51	44,5	cyclictest	1426847	-21	unixbench-2d	09:35:38	1
1372239	99	51	44,5	cyclictest	1387519	-21	kworker/u4:2+events_unbound	08:35:45	1
1372239	99	51	43,5	cyclictest	1382956	-21	fschecks_time	07:50:21	1
1372239	99	51	40,8	cyclictest	1402153	-21	fschecks_count	09:05:20	1
1372239	99	50	43,5	cyclictest	1480786	-21	kworker/u4:6+events_unbound	11:00:51	1
1372239	99	50	40,6	cyclictest	1513622	-21	dpkg	11:15:11	1
1372239	99	49	42,5	cyclictest	1469147	-21	ssh	10:24:36	1
1372239	99	49	41,6	cyclictest	1400374	-21	systemd	08:59:16	1
1372239	99	48	42,5	cyclictest	1387518	-21	kworker/u4:1+events_unbound	08:15:09	1
1372239	99	48	41,5	cyclictest	1417551	-21	ldconfig	09:25:31	1
1372239	99	48	39,7	cyclictest	0	-21	swapper/1	10:40:33	1
1372239	99	47	40,5	cyclictest	1465160	-21	latency_hist	10:20:02	1
1372239	99	47	39,5	cyclictest	1570452	-21	sendmail	12:20:01	1
1372239	99	47	34,10	cyclictest	0	-21	swapper/1	11:27:10	1
1372239	99	46	39,5	cyclictest	1532379	-21	timerwakeupswit	11:35:38	1
1372239	99	46	39,5	cyclictest	1519054	-21	sendmail_mailqu	11:20:39	1
1372239	99	46	39,5	cyclictest	1478983	-21	gltestperf	10:35:22	1
1372239	99	46	39,5	cyclictest	1448130	-21	fschecks_count	10:00:20	1
1372239	99	46	39,5	cyclictest	1407015	-21	sshd	09:14:19	1
1372239	99	46	39,5	cyclictest	1396985	-21	fschecks_time	08:45:17	1
1372239	99	46	36,7	cyclictest	1380209	-21	aten_r7power_vo	07:40:15	1
1372238	99	46	36,8	cyclictest	1372235	-21	cyclictest	07:47:21	0
1372239	99	45	38,5	cyclictest	0	-21	swapper/1	11:10:15	1
1372239	99	45	37,6	cyclictest	1447505	-21	rm	10:00:01	1
1372239	99	45	36,5	cyclictest	0	-21	swapper/1	09:25:00	1
1372238	99	45	36,7	cyclictest	1373928	-21	fschecks_count	07:15:18	0
1372239	99	44	36,5	cyclictest	1540162	-21	df_abs	11:45:19	1
1372238	99	44	37,5	cyclictest	1395428	-21	aten2__	08:40:14	0
1372239	99	43	34,7	cyclictest	1496133	-21	/usr/sbin/munin	10:55:15	1
1372239	99	43	32,9	cyclictest	1399138	-21	munin-run	08:55:01	1
1372239	99	43	10,19	cyclictest	0	-21	swapper/1	11:50:20	1
1372239	99	42	35,5	cyclictest	1549169	-21	gltestperf	11:55:19	1
1372239	99	42	35,5	cyclictest	1452172	-21	/usr/sbin/munin	10:05:11	1
1372239	99	42	33,6	cyclictest	0	-21	swapper/1	12:25:02	1
1372239	99	41	33,5	cyclictest	1391854	-21	fschecks_count	08:25:19	1
1372239	99	41	32,6	cyclictest	0	-21	swapper/1	11:40:39	1
1372238	99	41	32,7	cyclictest	1396797	-21	aten_r7power_vo	08:45:13	0
1372239	99	40	34,4	cyclictest	0	-21	swapper/1	07:45:24	1
1372239	99	40	30,7	cyclictest	0	-21	swapper/1	08:40:17	1
1372239	99	39	29,7	cyclictest	1372323	-21	latency_hist	07:10:02	1
1372238	99	39	20,16	cyclictest	0	-21	swapper/0	07:25:00	0
1372239	99	38	30,5	cyclictest	0	-21	swapper/1	09:00:15	1
1372239	99	38	29,7	cyclictest	0	-21	swapper/1	08:00:41	1
1372239	99	38	29,6	cyclictest	0	-21	swapper/1	08:10:19	1
1372239	99	37	25,9	cyclictest	1376450	-21	df_abs	07:25:15	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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