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 100 highest latencies:

System rack7slot2.osadl.org (updated Tue May 12, 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
1498973	99	211	196,10	cyclictest	53	-21	kswapd0	09:55:11	0
1498973	99	98	91,5	cyclictest	1515787	-21	kworker/u4:1+events_unbound	09:45:10	0
1498973	99	97	80,6	cyclictest	1602676	-21	kworker/u4:13+events_unbound	10:40:22	0
1498973	99	96	87,6	cyclictest	1602676	-21	kworker/u4:13+events_unbound	10:45:24	0
1498973	99	89	82,5	cyclictest	1541252	-21	kworker/u4:11+events_unbound	09:30:06	0
1498973	99	88	79,7	cyclictest	1497696	-21	kworker/u4:12+events_unbound	09:15:06	0
1498975	99	86	64,16	cyclictest	1509453	-21	latency_hist	07:50:13	1
1498975	99	85	69,12	cyclictest	0	-21	swapper/1	09:15:25	1
1498973	99	85	77,6	cyclictest	1536722	-21	kworker/u4:7+events_unbound	09:35:09	0
1498973	99	81	64,4	cyclictest	1500280	-21	kworker/u4:15+events_unbound	07:30:00	0
1498973	99	76	68,6	cyclictest	1694434	-21	kworker/u4:1+events_unbound	12:25:47	0
1498973	99	76	67,6	cyclictest	1673140	-21	kworker/u4:2+events_unbound	12:05:43	0
1498973	99	75	66,6	cyclictest	1563854	-21	kworker/u4:7+events_unbound	09:50:12	0
1498973	99	69	57,9	cyclictest	1518380	-21	systemd	08:24:53	0
1498975	99	68	58,6	cyclictest	1659925	-21	kworker/u4:1-rpciod	11:40:11	1
1498973	99	67	51,10	cyclictest	1579863	-21	ssh	10:05:36	0
1498973	99	67	51,10	cyclictest	1579863	-21	ssh	10:05:35	0
1498973	99	66	58,5	cyclictest	1703200	-21	kworker/u4:12+events_unbound	12:30:49	0
1498973	99	66	57,7	cyclictest	1589998	-21	kworker/u4:2+events_unbound	10:20:17	0
1498973	99	66	1,21	cyclictest	1498946	-21	apt-get	07:10:08	0
1498973	99	65	59,4	cyclictest	15	1	ktimers/0	10:56:58	0
1498973	99	65	28,10	cyclictest	1585557	-21	kworker/u4:15+events_unbound	10:12:23	0
1498975	99	64	22,16	cyclictest	1689182	-21	sed	12:10:39	1
1498975	99	63	54,6	cyclictest	0	-21	swapper/1	10:50:21	1
1498975	99	62	20,14	cyclictest	1659221	-21	ssh	11:35:48	1
1498973	99	61	52,6	cyclictest	1536718	-21	kworker/u4:2+events_unbound	09:20:03	0
1498975	99	60	50,7	cyclictest	1497696	-21	kworker/u4:12+events_unbound	09:10:01	1
1498975	99	60	23,12	cyclictest	1599976	-21	ssh	10:29:07	1
1498975	99	60	21,13	cyclictest	1594560	-21	ssh	10:22:26	1
1498975	99	60	21,13	cyclictest	1540811	-21	ssh	09:21:10	1
1498975	99	60	20,14	cyclictest	1650494	-21	ssh	11:25:48	1
1498975	99	60	19,15	cyclictest	1608876	-21	ssh	10:39:23	1
1498975	99	60	18,15	cyclictest	1683225	-21	ssh	12:04:36	1
1498975	99	59	52,5	cyclictest	1515787	-21	kworker/u4:1+events_unbound	10:15:16	1
1498975	99	59	47,9	cyclictest	1497693	-21	kworker/u4:7+events_unbound	07:34:44	1
1498975	99	59	21,13	cyclictest	1713510	-21	ssh	12:39:52	1
1498975	99	59	21,13	cyclictest	1624585	-21	ssh	10:56:27	1
1498975	99	59	20,11	cyclictest	1704468	-21	ssh	12:29:08	1
1498975	99	59	19,15	cyclictest	1617523	-21	ssh	10:49:11	1
1498975	99	59	19,15	cyclictest	1565699	-21	ssh	09:50:05	1
1498973	99	59	42,12	cyclictest	0	-21	swapper/0	09:10:38	0
1498975	99	58	41,11	cyclictest	1574632	-21	apt-get	10:00:16	1
1498975	99	58	20,10	cyclictest	1698493	-21	ssh	12:21:22	1
1498975	99	58	18,15	cyclictest	1647958	-21	ssh	11:23:43	1
1498975	99	58	18,15	cyclictest	1629575	-21	ssh	11:02:20	1
1498975	99	58	18,14	cyclictest	1573797	-21	ssh	09:59:14	1
1498975	99	58	18,13	cyclictest	1565473	-21	ssh	09:49:59	1
1498973	99	58	49,6	cyclictest	15	1	ktimers/0	10:17:07	0
1498975	99	57	20,11	cyclictest	1707558	-21	ssh	12:32:09	1
1498975	99	57	20,11	cyclictest	1634668	-21	ssh	11:08:27	1
1498975	99	57	19,14	cyclictest	1555173	-21	ssh	09:37:50	1
1498975	99	57	19,12	cyclictest	1559350	-21	ssh	09:42:25	1
1498975	99	57	18,14	cyclictest	1639950	-21	ssh	11:14:51	1
1498975	99	57	18,14	cyclictest	1582066	-21	ssh	10:08:27	1
1498975	99	57	18,14	cyclictest	1582066	-21	ssh	10:08:26	1
1498975	99	57	18,11	cyclictest	1532503	-21	ssh	09:12:10	1
1498973	99	57	7,39	cyclictest	0	-21	swapper/0	07:50:13	0
1498973	99	57	39,16	cyclictest	1529895	-21	munin-plugin-st	09:10:00	0
1498975	99	56	18,14	cyclictest	1685359	-21	ssh	12:06:04	1
1498975	99	56	18,14	cyclictest	1677252	-21	ssh	11:56:59	1
1498975	99	56	17,15	cyclictest	1656335	-21	ssh	11:33:08	1
1498975	99	56	15,16	cyclictest	1521646	-21	ntpq	08:35:23	1
1498975	99	55	21,9	cyclictest	1550159	-21	ssh	09:31:55	1
1498975	99	55	20,22	cyclictest	0	-21	swapper/1	11:50:41	1
1498975	99	55	18,14	cyclictest	1602374	-21	ssh	10:30:59	1
1498975	99	55	18,14	cyclictest	1545722	-21	ssh	09:26:58	1
1498975	99	55	17,14	cyclictest	1696239	-21	ssh	12:19:45	1
1498975	99	55	17,13	cyclictest	1642081	-21	ssh	11:16:17	1
1498973	99	55	48,5	cyclictest	1676257	-21	timerandwakeup	11:55:40	0
1498973	99	55	12,21	cyclictest	1498971	-21	cyclictest	07:10:00	0
1498975	99	54	18,13	cyclictest	1669434	-21	ssh	11:48:14	1
1498975	99	54	17,12	cyclictest	1611038	-21	ssh	10:40:49	1
1498973	99	54	35,5	cyclictest	1515789	-21	kworker/u4:3+events_unbound	08:40:01	0
1498975	99	53	38,8	cyclictest	1500304	-21	modprobe	07:15:00	1
1498975	99	53	22,6	cyclictest	1510246	-21	ntpq	07:50:39	1
1498975	99	53	17,11	cyclictest	1524271	-21	ntpq	08:45:27	1
1498975	99	53	17,10	cyclictest	1526810	-21	ntpq	08:55:28	1
1498973	99	53	44,7	cyclictest	1681293	-21	kworker/u4:10+events_unbound	12:21:01	0
1498973	99	53	44,7	cyclictest	1505410	-21	systemd	07:34:45	0
1498975	99	52	44,6	cyclictest	1508064	-21	systemd	07:44:46	1
1498975	99	51	44,5	cyclictest	1500856	-21	gltestperf	07:15:19	1
1498975	99	51	37,9	cyclictest	1519661	-21	modprobe	08:30:00	1
1498973	99	51	43,6	cyclictest	1620501	-21	kworker/u4:16+events_unbound	11:25:59	0
1498975	99	50	14,13	cyclictest	1517893	-21	ld	08:20:29	1
1498973	99	50	43,5	cyclictest	1632316	-21	gcc	11:05:28	0
1498973	99	50	43,4	cyclictest	0	-21	swapper/0	09:25:05	0
1498975	99	49	39,7	cyclictest	1516688	-21	ps	08:15:35	1
1498975	99	49	33,11	cyclictest	1583355	-21	apt-get	10:10:12	1
1498973	99	49	38,7	cyclictest	1498971	-21	cyclictest	12:17:45	0
1498975	99	48	40,5	cyclictest	1526074	-21	grep	08:55:01	1
1498975	99	48	34,9	cyclictest	1506312	-21	ntpq	07:35:36	1
1498973	99	48	41,5	cyclictest	1574939	-21	fschecks_count	10:00:20	0
1498973	99	48	40,5	cyclictest	1514802	-21	aten_r7power_po	08:10:15	0
1498973	99	48	37,7	cyclictest	0	-21	swapper/0	11:45:40	0
1498973	99	48	32,6	cyclictest	1659927	-21	kworker/u4:4+events_unbound	11:43:34	0
1498975	99	47	29,14	cyclictest	1503059	-21	apt-get	07:25:18	1
1498973	99	47	41,4	cyclictest	1619396	-21	diskmemload	10:50:37	0
1498973	99	47	36,9	cyclictest	1561062	-21	idleruntime-cro	09:45:00	0
1498973	99	47	29,5	cyclictest	1497693	-21	kworker/u4:7+events_unbound	08:10:00	0
1498973	99	47	26,18	cyclictest	1520908	-21	kworker/u4:15-rpciod	09:01:47	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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