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 highest latencies:

System rack7slot2.osadl.org (updated Fri Apr 17, 2026 12:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1452382	99	104	98,4	cyclictest	1483094	-21	kworker/u4:7+events_unbound	09:09:00	1
1452382	99	104	98,4	cyclictest	1483094	-21	kworker/u4:7+events_unbound	09:08:59	1
1452382	99	90	83,5	cyclictest	1564763	-21	kworker/u4:0+events_unbound	10:44:11	1
1452382	99	88	81,5	cyclictest	1490451	-21	kworker/u4:11+events_unbound	09:39:04	1
1452382	99	84	77,5	cyclictest	1573549	-21	kworker/u4:3+events_unbound	10:59:13	1
1452382	99	81	73,6	cyclictest	1638602	-21	kworker/u4:1+events_unbound	12:29:23	1
1452382	99	79	71,5	cyclictest	1467759	-21	kworker/u4:1+events_unbound	09:19:02	1
1452382	99	79	65,5	cyclictest	1469034	-21	kworker/u4:15+events_unbound	08:13:56	1
1452379	99	79	67,9	cyclictest	1638604	-21	kworker/u4:4+events_unbound	12:34:25	0
1452379	99	78	63,12	cyclictest	53	-21	kswapd0	12:00:02	0
1452379	99	76	67,5	cyclictest	1595099	-21	kworker/u4:5-nfsiod	11:25:07	0
1452379	99	72	61,8	cyclictest	53	-21	kswapd0	11:00:14	0
1452382	99	71	64,5	cyclictest	1480529	-21	kworker/u4:8+events_unbound	08:59:00	1
1452382	99	71	60,5	cyclictest	1458723	-21	kworker/u4:6+events_unbound	07:35:01	1
1452382	99	69	62,5	cyclictest	1564771	-21	kworker/u4:14+events_unbound	10:50:00	1
1452382	99	69	62,5	cyclictest	1477990	-21	kworker/u4:0+events_unbound	08:48:57	1
1452382	99	69	61,6	cyclictest	1651693	-21	kworker/u4:10+events_unbound	12:24:25	1
1452379	99	69	27,12	cyclictest	1632760	-21	ntpq	12:00:23	0
1452382	99	68	61,5	cyclictest	1453601	-21	kworker/u4:10+events_unbound	07:13:50	1
1452379	99	68	56,5	cyclictest	1662980	-21	ssh	12:35:29	0
1452379	99	68	26,14	cyclictest	1593645	-21	ntpq	11:15:25	0
1452379	99	67	59,6	cyclictest	1462650	-21	kworker/u4:14+events_unbound	08:03:54	0
1452382	99	66	59,5	cyclictest	1465192	-21	kworker/u4:18+events_unbound	07:58:54	1
1452382	99	65	47,6	cyclictest	1604062	-21	kworker/u4:6+events_unbound	11:40:03	1
1452379	99	65	53,9	cyclictest	0	-21	swapper/0	10:15:14	0
1452382	99	64	58,4	cyclictest	1459989	-21	kworker/u4:9+events_unbound	08:08:55	1
1452382	99	64	58,4	cyclictest	1449865	-21	kworker/u4:0+events_unbound	07:48:54	1
1452382	99	64	55,7	cyclictest	1475427	-21	systemd	08:38:55	1
1452379	99	64	51,8	cyclictest	1655440	-21	kthreadd	12:26:26	0
1452379	99	64	31,12	cyclictest	1598057	-21	ntpq	11:20:23	0
1452379	99	64	25,12	cyclictest	1467958	-21	apt-get	08:10:12	0
1452382	99	63	56,5	cyclictest	1595098	-21	kworker/u4:4+events_unbound	11:19:14	1
1452382	99	63	55,6	cyclictest	1525395	-21	kworker/u4:1+events_unbound	09:59:26	1
1452382	99	62	55,5	cyclictest	1617300	-21	kworker/u4:15+events_unbound	11:56:37	1
1452382	99	62	55,5	cyclictest	1459995	-21	kworker/u4:15+events_unbound	07:38:54	1
1452379	99	62	51,8	cyclictest	0	-21	swapper/0	12:10:33	0
1452382	99	61	55,5	cyclictest	1459993	-21	kworker/u4:12+events_unbound	07:53:55	1
1452379	99	61	52,7	cyclictest	1484654	-21	unixbench-2d	09:10:39	0
1452379	99	61	15,11	cyclictest	1612859	-21	ssh	11:37:24	0
1452379	99	61	15,11	cyclictest	1612859	-21	ssh	11:37:23	0
1452382	99	60	54,4	cyclictest	1471612	-21	kworker/u4:3+events_unbound	08:23:56	1
1452382	99	60	52,6	cyclictest	1662171	-21	apt-config	12:35:04	1
1452382	99	60	50,7	cyclictest	53	-21	kswapd0	10:15:00	1
1452382	99	60	46,11	cyclictest	1658986	-21	mailstats	12:30:38	1
1452382	99	60	2,51	cyclictest	1602643	-21	ssh	11:25:36	1
1452379	99	60	48,6	cyclictest	1501901	-21	ntpq	09:30:27	0
1452382	99	59	52,5	cyclictest	1469032	-21	kworker/u4:8+events_unbound	08:18:56	1
1452382	99	58	48,6	cyclictest	0	-21	swapper/1	12:00:22	1
1452379	99	58	18,34	cyclictest	0	-21	swapper/0	07:45:13	0
1452382	99	57	51,4	cyclictest	1469030	-21	kworker/u4:5+events_unbound	08:43:59	1
1452382	99	57	50,5	cyclictest	1449865	-21	kworker/u4:0+events_unbound	07:23:51	1
1452379	99	57	46,9	cyclictest	1576180	-21	ntp_kernel_pll_	10:55:27	0
1452379	99	57	21,10	cyclictest	1500343	-21	ssh	09:29:06	0
1452379	99	57	19,11	cyclictest	1516120	-21	ssh	09:46:22	0
1452379	99	57	18,14	cyclictest	1537455	-21	ssh	10:10:38	0
1452379	99	57	16,15	cyclictest	1525483	-21	ssh	09:57:20	0
1452382	99	56	49,5	cyclictest	1642944	-21	kworker/u4:7+events_unbound	12:12:42	1
1452382	99	56	48,6	cyclictest	1629834	-21	kworker/u4:6+events_unbound	12:05:04	1
1452379	99	56	44,9	cyclictest	1606182	-21	aten2__	11:30:16	0
1452379	99	56	30,20	cyclictest	256	50	irq/23-42890000.ethernet	09:40:29	0
1452379	99	56	22,8	cyclictest	1562468	-21	apt-get	10:40:13	0
1452379	99	56	18,11	cyclictest	1625103	-21	ssh	11:51:10	0
1452379	99	56	16,15	cyclictest	1592482	-21	ssh	11:14:43	0
1452379	99	56	16,12	cyclictest	1456995	-21	ntpq	07:25:31	0
1452379	99	56	15,16	cyclictest	1507506	-21	ssh	09:36:35	0
1452379	99	56	12,24	cyclictest	1491544	-21	ssh	09:19:14	0
1452379	99	55	8,25	cyclictest	0	-21	swapper/0	12:20:35	0
1452379	99	55	24,24	cyclictest	0	-21	swapper/0	12:05:24	0
1452379	99	55	16,15	cyclictest	1463418	-21	ntpq	07:50:28	0
1452379	99	55	14,19	cyclictest	0	-21	swapper/0	11:45:38	0
1452379	99	55	12,20	cyclictest	1458759	-21	munin-plugin-st	07:35:01	0
1452382	99	54	48,4	cyclictest	1453602	-21	kworker/u4:11+events_unbound	07:43:53	1
1452382	99	54	44,6	cyclictest	0	-21	swapper/1	09:30:40	1
1452379	99	54	34,14	cyclictest	1545829	-21	ssh	10:20:32	0
1452379	99	54	22,12	cyclictest	1473169	-21	basename	08:30:16	0
1452379	99	54	20,10	cyclictest	1575251	-21	latency_hist	10:55:01	0
1452379	99	54	13,17	cyclictest	1649068	-21	modprobe	12:20:01	0
1452379	99	54	13,14	cyclictest	1533281	-21	ssh	10:05:48	0
1452379	99	54	10,25	cyclictest	0	-21	swapper/0	10:35:20	0
1452382	99	53	41,6	cyclictest	1525397	-21	kworker/u4:3+events_unbound	10:20:42	1
1452382	99	53	40,11	cyclictest	1541124	-21	/usr/sbin/munin	10:15:25	1
1452379	99	53	42,6	cyclictest	1481842	-21	modprobe	09:05:00	0
1452379	99	53	18,10	cyclictest	1567572	-21	ntp_states	10:45:31	0
1452379	99	53	16,11	cyclictest	1471094	-21	ntpq	08:20:25	0
1452379	99	53	15,12	cyclictest	1556152	-21	ssh	10:32:24	0
1452382	99	52	46,4	cyclictest	1499420	-21	kworker/u4:12+events_unbound	09:40:02	1
1452382	99	52	46,4	cyclictest	1452309	-21	kworker/u4:4+events_unbound	07:18:49	1
1452382	99	52	44,5	cyclictest	1645648	-21	/usr/sbin/munin	12:15:22	1
1452382	99	52	36,5	cyclictest	1490451	-21	kworker/u4:11+events_unbound	09:24:53	1
1452382	99	52	26,14	cyclictest	1515212	-21	ssh	09:45:34	1
1452379	99	52	20,10	cyclictest	1480048	-21	ntpq	08:55:29	0
1452379	99	52	15,13	cyclictest	1615711	-21	ld	11:40:36	0
1452382	99	51	44,5	cyclictest	1469032	-21	kworker/u4:8+events_unbound	08:34:01	1
1452382	99	51	42,7	cyclictest	1552881	-21	sshd	10:29:08	1
1452382	99	51	35,5	cyclictest	1612869	-21	kworker/u4:8+events_unbound	11:48:43	1
1452379	99	51	19,10	cyclictest	0	-21	swapper/0	07:40:00	0
1452379	99	51	16,13	cyclictest	1521804	-21	ssh	09:53:26	0
1452379	99	51	15,10	cyclictest	1472448	-21	ntp_states	08:25:30	0
1452379	99	51	13,14	cyclictest	1477533	-21	ntpq	08:45:28	0
1452379	99	51	10,20	cyclictest	1475463	-21	munin-plugin-st	08:40:00	0
1452382	99	50	45,4	cyclictest	1612872	-21	kworker/u4:12+events_unbound	11:54:00	1
1452382	99	50	31,6	cyclictest	1551494	-21	kworker/u4:4+events_unbound	10:30:52	1
1452379	99	50	21,10	cyclictest	1466949	-21	fschecks_count	08:05:17	0
1452379	99	50	15,12	cyclictest	1493130	-21	ntpq	09:20:28	0
1452379	99	50	14,10	cyclictest	1527877	-21	perl	10:00:18	0
1452382	99	49	43,5	cyclictest	1577317	-21	kworker/u4:9+events_unbound	11:12:43	1
1452382	99	49	40,6	cyclictest	0	-21	swapper/1	11:30:11	1
1452382	99	49	38,5	cyclictest	1573550	-21	kworker/u4:8+events_unbound	10:53:01	1
1452379	99	49	12,10	cyclictest	1452355	-21	munin-run	07:10:00	0
1452379	99	49	11,15	cyclictest	1478842	-21	ntp_states	08:50:33	0
1452379	99	49	10,14	cyclictest	1552390	-21	ssh	10:28:21	0
1452379	99	48	40,6	cyclictest	1585362	-21	timerandwakeup	11:05:42	0
1452379	99	48	19,8	cyclictest	1460777	-21	ntpq	07:40:25	0
1452379	99	48	14,9	cyclictest	1482563	-21	ntpq	09:05:24	0
1452379	99	48	14,9	cyclictest	1482563	-21	ntpq	09:05:23	0
1452379	99	48	13,14	cyclictest	1454391	-21	ntpq	07:15:28	0
1452382	99	47	40,5	cyclictest	1453601	-21	kworker/u4:10+events_unbound	07:28:53	1
1452382	99	47	38,7	cyclictest	1530989	-21	sshd	10:04:06	1
1452382	99	47	38,6	cyclictest	0	-21	swapper/1	10:39:09	1
1452379	99	47	38,7	cyclictest	1470355	-21	munin-plugin-st	08:20:01	0
1452379	99	47	27,16	cyclictest	1464769	-21	ntpq	07:55:33	0
1452379	99	47	12,10	cyclictest	1455750	-21	ntp_states	07:20:30	0
1452379	99	46	15,10	cyclictest	1453143	-21	ntpq	07:10:28	0
1452382	99	45	38,4	cyclictest	0	-21	swapper/1	11:35:24	1
1452382	99	45	38,4	cyclictest	0	-21	swapper/1	11:35:24	1
1452382	99	45	37,6	cyclictest	1581737	-21	kworker/u4:17+events_unbound	11:01:59	1
1452382	99	45	32,5	cyclictest	1516557	-21	kworker/u4:8+events_unbound	10:06:59	1
1452382	99	44	37,5	cyclictest	1469030	-21	kworker/u4:5+events_unbound	09:10:41	1
1452382	99	44	36,6	cyclictest	1516558	-21	kworker/u4:9+events_unbound	09:50:15	1
1452382	99	44	35,6	cyclictest	0	-21	swapper/1	11:09:12	1
1452382	99	43	35,6	cyclictest	1463924	-21	kworker/u4:17+events_unbound	08:50:32	1
1452382	99	43	32,9	cyclictest	0	-21	swapper/1	11:20:28	1
1452382	99	43	31,10	cyclictest	0	-21	swapper/1	09:25:16	1
1452379	99	43	26,14	cyclictest	1475647	-21	apt-get	08:40:11	0
1452382	99	41	29,5	cyclictest	1477990	-21	kworker/u4:0+events_unbound	09:00:41	1
1452382	99	40	33,4	cyclictest	0	-21	swapper/1	08:00:11	1
1452382	99	39	25,5	cyclictest	1453601	-21	kworker/u4:10+events_unbound	08:26:02	1
1452382	99	28	13,9	cyclictest	17	1	rcu_preempt	07:10:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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