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 792 highest latencies:

System rack7slot2.osadl.org (updated Fri Mar 27, 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
1299777	99	193	179,8	cyclictest	1402213	-21	kworker/u4:2+events_unbound	23:50:13	0
1299777	99	105	97,5	cyclictest	1330481	-21	kworker/u4:6+events_unbound	21:18:03	0
1299777	99	105	97,5	cyclictest	1330481	-21	kworker/u4:6+events_unbound	21:18:03	0
1299778	99	100	74,12	cyclictest	1318913	-21	kworker/u4:1+xprtiod	20:25:10	1
1299777	99	98	90,6	cyclictest	1450341	-21	kworker/u4:7+events_unbound	23:38:32	0
1299778	99	80	32,29	cyclictest	1409824	-21	sendmail_mailqu	22:45:38	1
1299777	99	80	72,6	cyclictest	1486329	-21	kworker/u4:5+events_unbound	00:33:43	0
1299778	99	76	67,7	cyclictest	1330480	-21	kworker/u4:5+events_unbound	21:23:04	1
1299778	99	76	43,30	cyclictest	1426249	-21	idleruntime-cro	23:05:00	1
1299777	99	75	58,6	cyclictest	53	-21	kswapd0	00:30:01	0
1299778	99	72	38,31	cyclictest	0	-21	swapper/1	22:20:17	1
1299777	99	72	64,6	cyclictest	1312504	-21	kworker/u4:10+events_unbound	20:42:58	0
1299777	99	72	55,13	cyclictest	53	-21	kswapd0	22:35:20	0
1299777	99	72	49,7	cyclictest	1312504	-21	kworker/u4:10+events_unbound	20:58:00	0
1299777	99	70	61,6	cyclictest	1330844	-21	ssh	21:10:10	0
1299778	99	69	39,28	cyclictest	1436620	-21	unixbench-2d	23:15:42	1
1299778	99	69	38,29	cyclictest	1339406	-21	cron	21:20:00	1
1299778	99	69	38,29	cyclictest	1339406	-21	cron	21:20:00	1
1299778	99	69	38,28	cyclictest	1331720	-21	ntpq	21:10:38	1
1299778	99	68	33,32	cyclictest	1391548	-21	gltestperf	22:25:22	1
1299778	99	67	35,29	cyclictest	0	-21	swapper/1	00:30:33	1
1299777	99	67	56,8	cyclictest	53	-21	kswapd0	23:05:08	0
1299778	99	66	33,31	cyclictest	1457072	-21	sh	23:40:00	1
1299778	99	66	33,30	cyclictest	0	-21	swapper/1	00:20:40	1
1299778	99	66	3,14	cyclictest	1344130	-21	apt-get	21:25:10	1
1299778	99	66	3,14	cyclictest	1344130	-21	apt-get	21:25:10	1
1299777	99	66	58,6	cyclictest	1406744	-21	kworker/u4:6+events_unbound	22:50:19	0
1299778	99	64	54,7	cyclictest	1299708	-21	kworker/u4:4+events_unbound	19:17:36	1
1299778	99	64	32,29	cyclictest	1311273	-21	idleruntime-cro	19:55:00	1
1299777	99	64	53,9	cyclictest	0	-21	swapper/0	22:55:15	0
1299777	99	64	47,9	cyclictest	1326672	-21	kworker/u4:4	20:54:59	0
1299778	99	63	58,3	cyclictest	1308693	-21	kworker/u4:14+events_unbound	19:47:49	1
1299778	99	63	27,32	cyclictest	0	-21	swapper/1	20:55:29	1
1299778	99	62	29,31	cyclictest	0	-21	swapper/1	00:25:27	1
1299778	99	62	27,32	cyclictest	0	-21	swapper/1	20:10:26	1
1299777	99	62	45,14	cyclictest	1492998	-21	cpu	00:20:17	0
1299778	99	61	4,10	cyclictest	1461772	-21	apt-get	23:45:11	1
1299778	99	61	28,30	cyclictest	0	-21	swapper/1	23:05:28	1
1299778	99	61	28,29	cyclictest	0	-21	swapper/1	00:00:37	1
1299778	99	61	1,16	cyclictest	1328770	-21	ntpq	21:00:29	1
1299777	99	61	48,9	cyclictest	1382946	-21	modprobe	22:15:00	0
1299777	99	61	47,9	cyclictest	1299774	-21	cyclictest	21:37:12	0
1299778	99	60	51,6	cyclictest	0	-21	swapper/1	00:15:26	1
1299778	99	60	3,10	cyclictest	1479527	-21	apt-get	00:05:16	1
1299778	99	60	30,28	cyclictest	1373252	-21	timerwakeupswit	22:00:38	1
1299778	99	60	26,31	cyclictest	0	-21	swapper/1	21:35:35	1
1299778	99	60	25,30	cyclictest	1319098	-21	latency_hist	20:25:02	1
1299777	99	60	50,7	cyclictest	1344962	-21	/usr/sbin/munin	21:25:30	0
1299777	99	60	50,7	cyclictest	1344962	-21	/usr/sbin/munin	21:25:29	0
1299778	99	59	52,5	cyclictest	1301004	-21	kworker/u4:11+events_unbound	20:07:52	1
1299778	99	59	33,24	cyclictest	1380795	-21	kworker/u4:1-rpciod	22:15:01	1
1299778	99	59	3,21	cyclictest	1349275	-21	ssh	21:30:25	1
1299778	99	59	30,26	cyclictest	0	-21	swapper/1	22:35:12	1
1299778	99	59	29,28	cyclictest	1445179	-21	mailstats	23:25:37	1
1299778	99	59	29,27	cyclictest	0	-21	swapper/1	23:35:00	1
1299778	99	59	26,31	cyclictest	1485119	-21	timerwakeupswit	00:10:39	1
1299778	99	59	24,32	cyclictest	0	-21	swapper/1	23:10:20	1
1299778	99	59	22,34	cyclictest	0	-21	swapper/1	23:20:17	1
1299778	99	59	19,37	cyclictest	1300087	-21	cpu	19:10:15	1
1299777	99	59	50,7	cyclictest	1299774	-21	cyclictest	23:42:14	0
1299778	99	58	44,11	cyclictest	1312253	-21	switchtime	19:55:34	1
1299778	99	58	27,28	cyclictest	0	-21	swapper/1	22:33:16	1
1299778	99	58	27,27	cyclictest	0	-21	swapper/1	22:50:32	1
1299778	99	58	26,29	cyclictest	0	-21	swapper/1	21:40:21	1
1299778	99	58	25,30	cyclictest	0	-21	swapper/1	19:25:14	1
1299777	99	58	44,10	cyclictest	1301027	-21	modprobe	19:15:01	0
1299778	99	57	3,12	cyclictest	1466184	-21	apt-get	23:50:11	1
1299778	99	57	28,27	cyclictest	0	-21	swapper/1	00:35:28	1
1299778	99	57	25,29	cyclictest	0	-21	swapper/1	20:50:24	1
1299778	99	57	25,28	cyclictest	0	-21	swapper/1	22:40:11	1
1299778	99	57	22,32	cyclictest	0	-21	swapper/1	23:55:40	1
1299778	99	57	1,14	cyclictest	1457684	-21	diskstats	23:40:18	1
1299778	99	56	25,29	cyclictest	1305077	-21	aten2__	19:30:15	1
1299778	99	56	2,17	cyclictest	1329964	-21	ntpq	21:05:23	1
1299778	99	55	32,21	cyclictest	1386357	-21	sendmail	22:20:00	1
1299777	99	55	34,19	cyclictest	1310457	-21	fschecks_time	19:50:18	0
1299778	99	54	3,9	cyclictest	1321118	-21	ntpq	20:30:32	1
1299778	99	54	24,28	cyclictest	0	-21	swapper/1	19:10:01	1
1299778	99	54	19,31	cyclictest	0	-21	swapper/1	22:57:37	1
1299778	99	54	1,15	cyclictest	1364166	-21	ssh	21:48:41	1
1299777	99	54	46,6	cyclictest	1349886	-21	unixbench_singl	21:30:40	0
1299777	99	54	42,9	cyclictest	1444236	-21	aten_r7power_cu	23:25:14	0
1299777	99	54	42,7	cyclictest	1435090	-21	munin-run	23:15:01	0
1299777	99	54	36,16	cyclictest	1492493	-21	sendmail	00:20:00	0
1299778	99	53	22,29	cyclictest	1312502	-21	kworker/u4:6+rpciod	20:45:25	1
1299778	99	53	21,29	cyclictest	0	-21	swapper/1	20:40:01	1
1299778	99	53	21,29	cyclictest	0	-21	swapper/1	20:40:01	1
1299778	99	53	18,32	cyclictest	0	-21	swapper/1	22:09:38	1
1299778	99	53	15,8	cyclictest	1369343	-21	ssh	21:56:17	1
1299777	99	53	44,7	cyclictest	315	-21	systemd-journal	00:12:41	0
1299778	99	52	2,13	cyclictest	1365794	-21	ssh	21:50:59	1
1299777	99	52	8,38	cyclictest	1358313	-21	ssh	21:40:29	0
1299777	99	52	43,7	cyclictest	1393223	-21	kworker/u4:0+events_unbound	22:28:16	0
1299778	99	51	4,11	cyclictest	1323574	-21	ntpq	20:40:22	1
1299778	99	51	15,6	cyclictest	1316997	-21	if_eth0	20:15:22	1
1299777	99	51	42,6	cyclictest	1479238	-21	latency_hist	00:05:01	0
1299777	99	51	41,6	cyclictest	1436317	-21	/usr/sbin/munin	23:15:38	0
1299778	99	50	23,25	cyclictest	0	-21	swapper/1	19:35:20	1
1299777	99	50	41,5	cyclictest	1330481	-21	kworker/u4:6+events_unbound	21:08:03	0
1299777	99	49	40,6	cyclictest	1312533	-21	kworker/u4:9	20:00:01	0
1299777	99	49	36,8	cyclictest	1454813	-21	kworker/u4:14-xprtiod	23:45:34	0
1299777	99	49	26,20	cyclictest	256	50	irq/23-42890000.ethernet	20:25:10	0
1299777	99	49	22,24	cyclictest	0	-21	swapper/0	19:45:34	0
1299778	99	48	39,7	cyclictest	1308669	-21	unixbench_singl	19:40:38	1
1299777	99	48	39,7	cyclictest	1330480	-21	kworker/u4:5+events_unbound	21:20:59	0
1299777	99	48	39,6	cyclictest	1320500	-21	aten2__	20:30:15	0
1299777	99	48	39,6	cyclictest	1312503	-21	kworker/u4:9+events_unbound	20:22:52	0
1299777	99	48	38,6	cyclictest	1302345	-21	tr	19:20:01	0
1299777	99	48	37,8	cyclictest	1406744	-21	kworker/u4:6+events_unbound	23:00:35	0
1299777	99	48	35,9	cyclictest	1325316	-21	unixbench_singl	20:45:39	0
1299777	99	48	31,14	cyclictest	1409167	-21	ssh	22:45:20	0
1299778	99	47	1,14	cyclictest	1313270	-21	ntpq	20:00:23	1
1299777	99	47	39,6	cyclictest	1287173	-21	kworker/u4:10+events_unbound	19:30:01	0
1299777	99	47	39,5	cyclictest	1506214	-21	aten_r7power_vo	00:35:17	0
1299777	99	47	39,5	cyclictest	1480368	-21	/usr/sbin/munin	00:05:33	0
1299778	99	46	15,28	cyclictest	0	-21	swapper/1	19:20:17	1
1299777	99	46	38,6	cyclictest	1326643	-21	kworker/u4:8+events_unbound	21:03:00	0
1299777	99	46	37,7	cyclictest	1314048	-21	aten_r7power_cu	20:05:17	0
1299777	99	46	36,7	cyclictest	1448557	-21	acpi	23:30:12	0
1299777	99	46	36,7	cyclictest	1312923	-21	df	20:00:16	0
1299777	99	46	35,6	cyclictest	1468277	-21	kworker/u4:19-rpciod	23:55:31	0
1299777	99	45	38,5	cyclictest	1372247	-21	aten_r7power_vo	22:00:16	0
1299777	99	45	37,6	cyclictest	1359694	-21	kworker/u4:0+events_unbound	21:58:11	0
1299777	99	44	37,5	cyclictest	1062	-21	lldpd	20:11:29	0
1299777	99	44	36,6	cyclictest	1365926	-21	kworker/u4:2+events_unbound	22:08:59	0
1299777	99	44	36,6	cyclictest	1306648	-21	fschecks_time	19:35:20	0
1299777	99	44	35,6	cyclictest	1302888	-21	gltestperf	19:20:17	0
1299777	99	43	36,5	cyclictest	1317666	-21	munin-plugin-st	20:20:01	0
1299777	99	43	33,7	cyclictest	0	-21	swapper/0	22:20:29	0
1299777	99	42	34,5	cyclictest	1396177	-21	ntp_kernel_err	22:30:25	0
1299777	99	42	2,18	cyclictest	1386340	-21	munin-run	22:20:00	0
1299777	99	41	34,5	cyclictest	1439936	-21	aten_r7power_vo	23:20:16	0
1299777	99	41	33,5	cyclictest	0	-21	swapper/0	22:40:22	0
1299777	99	41	31,8	cyclictest	1322857	-21	munin-run	20:40:00	0
1299777	99	41	31,8	cyclictest	1322857	-21	munin-run	20:40:00	0
1299777	99	40	32,6	cyclictest	1359700	-21	kworker/u4:9+events_unbound	21:49:59	0
1299777	99	40	19,17	cyclictest	0	-21	swapper/0	19:30:19	0
1299777	99	39	31,6	cyclictest	1306124	-21	kworker/u4:5+events_unbound	19:42:46	0
1299777	99	39	31,5	cyclictest	1365923	-21	ssh	21:51:11	0
1299777	99	33	24,6	cyclictest	0	-21	swapper/0	19:10:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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