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 Sun Mar 15, 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
1447601	99	101	94,5	cyclictest	1489607	-21	kworker/u4:11+events_unbound	21:22:47	1
1447599	99	98	89,5	cyclictest	1516995	-21	kworker/u4:9+events_unbound	21:52:54	0
1447599	99	97	90,5	cyclictest	1627224	-21	kworker/u4:4+events_unbound	00:13:24	0
1447601	99	93	63,27	cyclictest	1552833	-21	kworker/u4:2+xprtiod	22:35:13	1
1447599	99	91	83,6	cyclictest	1503278	-21	kworker/u4:2+events_unbound	21:37:53	0
1447599	99	90	80,8	cyclictest	53	-21	kswapd0	00:05:01	0
1447599	99	86	70,14	cyclictest	1587845	-21	kworker/u4:11+events_unbound	23:23:15	0
1447601	99	84	79,3	cyclictest	1583414	-21	kworker/u4:7+events_unbound	23:10:01	1
1447599	99	83	72,8	cyclictest	53	-21	kswapd0	23:30:01	0
1447599	99	83	72,8	cyclictest	53	-21	kswapd0	23:30:00	0
1447601	99	82	75,5	cyclictest	1605606	-21	kworker/u4:5+events_unbound	23:45:17	1
1447599	99	79	70,6	cyclictest	1459036	-21	kworker/u4:11+events_unbound	20:45:02	0
1447599	99	78	64,12	cyclictest	1474366	-21	kworker/u4:12+events_unbound	22:02:57	0
1447599	99	78	54,17	cyclictest	53	-21	kswapd0	22:35:07	0
1447599	99	74	64,7	cyclictest	1614528	-21	kworker/u4:10+events_unbound	23:43:18	0
1447601	99	73	68,3	cyclictest	1450106	-21	kworker/u4:14+events_unbound	20:37:36	1
1447601	99	71	64,4	cyclictest	53	-21	kswapd0	22:05:11	1
1447599	99	71	62,7	cyclictest	1539163	-21	kworker/u4:9+events_unbound	22:18:04	0
1447599	99	70	47,6	cyclictest	1581075	-21	latency_hist	23:05:02	0
1447601	99	69	62,5	cyclictest	53	-21	kswapd0	21:50:15	1
1447601	99	69	61,6	cyclictest	1475721	-21	kworker/u4:15+events_unbound	20:57:41	1
1447599	99	69	61,5	cyclictest	1431076	-21	kworker/u4:13+events_unbound	19:45:01	0
1447601	99	68	60,6	cyclictest	1474367	-21	kworker/u4:13+events_unbound	21:02:42	1
1447599	99	68	59,6	cyclictest	1548317	-21	kworker/u4:8+events_unbound	22:50:00	0
1447601	99	67	62,3	cyclictest	1605603	-21	kworker/u4:0+events_unbound	23:38:18	1
1447601	99	67	57,7	cyclictest	53	-21	kswapd0	22:55:01	1
1447601	99	67	2,51	cyclictest	1501774	-21	ssh	21:35:26	1
1447599	99	67	58,6	cyclictest	53	-21	kswapd0	00:20:00	0
1447599	99	67	58,6	cyclictest	53	-21	kswapd0	00:20:00	0
1447599	99	66	58,6	cyclictest	1570678	-21	kworker/u4:3+events_unbound	22:53:08	0
1447599	99	66	42,12	cyclictest	0	-21	swapper/0	00:00:01	0
1447601	99	65	56,6	cyclictest	1435108	-21	kworker/u4:9+events_unbound	19:10:00	1
1447599	99	65	54,8	cyclictest	1557274	-21	kworker/u4:1+events_unbound	22:40:35	0
1447599	99	65	54,8	cyclictest	1557274	-21	kworker/u4:1+events_unbound	22:40:34	0
1447601	99	64	57,5	cyclictest	1516993	-21	kworker/u4:3+events_unbound	22:12:58	1
1447601	99	64	55,7	cyclictest	1507889	-21	kworker/u4:5+events_unbound	21:47:53	1
1447601	99	64	55,6	cyclictest	1451403	-21	kworker/u4:15+events_unbound	19:27:22	1
1447599	99	64	55,7	cyclictest	1587842	-21	kworker/u4:8+events_unbound	23:33:17	0
1447601	99	63	55,6	cyclictest	1474366	-21	kworker/u4:12+events_unbound	21:57:54	1
1447599	99	63	56,5	cyclictest	1645058	-21	kworker/u4:2+events_unbound	00:20:02	0
1447599	99	63	56,5	cyclictest	1453931	-21	kworker/u4:0+events_unbound	20:22:32	0
1447599	99	61	52,7	cyclictest	1478287	-21	systemd	21:07:42	0
1447601	99	60	52,6	cyclictest	1467982	-21	kworker/u4:6+events_unbound	20:52:41	1
1447601	99	60	52,6	cyclictest	1467982	-21	kworker/u4:6+events_unbound	20:42:37	1
1447601	99	60	51,7	cyclictest	53	-21	kswapd0	00:00:21	1
1447601	99	60	51,6	cyclictest	1438949	-21	kworker/u4:2+events_unbound	19:12:19	1
1447599	99	59	52,5	cyclictest	1530027	-21	kworker/u4:8+events_unbound	22:07:57	0
1447599	99	59	50,7	cyclictest	1574468	-21	kworker/u4:4+events_unbound	22:58:09	0
1447601	99	58	52,4	cyclictest	53	-21	kswapd0	00:25:13	1
1447601	99	58	50,6	cyclictest	1618327	-21	kworker/u4:12+events_unbound	00:10:19	1
1447601	99	58	48,7	cyclictest	53	-21	kswapd0	23:20:17	1
1447599	99	58	50,6	cyclictest	53	-21	kswapd0	23:15:00	0
1447601	99	57	45,9	cyclictest	1525767	-21	sh	22:01:58	1
1447599	99	57	49,6	cyclictest	1631713	-21	kworker/u4:5+events_unbound	00:25:02	0
1447601	99	56	48,6	cyclictest	53	-21	kswapd0	23:05:01	1
1447601	99	56	48,6	cyclictest	1455205	-21	kworker/u4:4+events_unbound	19:57:26	1
1447601	99	56	46,5	cyclictest	1605605	-21	kworker/u4:4+events_unbound	23:35:01	1
1447601	99	55	47,6	cyclictest	1450105	-21	kworker/u4:12+events_unbound	20:07:28	1
1447601	99	55	46,6	cyclictest	1507889	-21	kworker/u4:5+events_unbound	22:25:13	1
1447601	99	55	35,16	cyclictest	1643061	-21	fschecks_count	00:15:21	1
1447601	99	55	35,16	cyclictest	1643061	-21	fschecks_count	00:15:20	1
1447599	99	55	46,7	cyclictest	1447597	-21	cyclictest	22:33:52	0
1447599	99	55	41,6	cyclictest	1548317	-21	kworker/u4:8+events_unbound	22:30:02	0
1447601	99	54	47,5	cyclictest	1561753	-21	kworker/u4:12+events_unbound	22:43:06	1
1447601	99	54	47,5	cyclictest	1561753	-21	kworker/u4:12+events_unbound	22:43:06	1
1447601	99	54	46,6	cyclictest	1537081	-21	ssh	22:15:16	1
1447601	99	54	40,11	cyclictest	0	-21	swapper/1	00:30:32	1
1447601	99	54	39,5	cyclictest	1450106	-21	kworker/u4:14+events_unbound	21:27:51	1
1447599	99	54	46,5	cyclictest	1468540	-21	gltestperf	20:30:20	0
1447599	99	53	46,5	cyclictest	1533163	-21	/usr/sbin/munin	22:10:21	0
1447599	99	53	40,5	cyclictest	1578964	-21	kworker/u4:2+events_unbound	23:05:19	0
1447601	99	52	42,7	cyclictest	1664431	-21	latency_hist	00:40:02	1
1447599	99	52	45,5	cyclictest	1587842	-21	kworker/u4:8+events_unbound	23:39:59	0
1447599	99	52	44,6	cyclictest	1520154	-21	/usr/sbin/munin	21:55:38	0
1447599	99	52	44,5	cyclictest	1661117	-21	/usr/sbin/munin	00:35:37	0
1447599	99	52	39,9	cyclictest	0	-21	swapper/0	23:15:15	0
1447601	99	51	46,3	cyclictest	1548317	-21	kworker/u4:8+events_unbound	22:55:01	1
1447601	99	51	44,5	cyclictest	1596749	-21	kworker/u4:6+events_unbound	23:41:00	1
1447601	99	51	43,6	cyclictest	1596749	-21	kworker/u4:6+events_unbound	23:25:12	1
1447601	99	51	43,6	cyclictest	1596749	-21	kworker/u4:6+events_unbound	23:25:12	1
1447601	99	51	43,5	cyclictest	1586976	-21	unixbench_multi	23:10:41	1
1447601	99	50	43,5	cyclictest	1466039	-21	gltestperf	20:20:18	1
1447601	99	50	42,6	cyclictest	1590214	-21	sh	23:15:20	1
1447601	99	50	41,7	cyclictest	1479941	-21	unixbench_singl	21:10:43	1
1447601	99	50	28,16	cyclictest	1629222	-21	modprobe	00:00:00	1
1447599	99	50	45,3	cyclictest	1453932	-21	kworker/u4:1+events_unbound	19:40:01	0
1447599	99	50	44,4	cyclictest	1474975	-21	fschecks_time	20:55:23	0
1447599	99	50	42,6	cyclictest	1616542	-21	/usr/sbin/munin	23:45:16	0
1447601	99	49	42,5	cyclictest	53	-21	kswapd0	22:45:12	1
1447601	99	49	42,5	cyclictest	1638022	-21	cron	00:10:00	1
1447601	99	49	41,6	cyclictest	1447597	-21	cyclictest	00:24:45	1
1447601	99	49	41,5	cyclictest	1554829	-21	apt-key	22:35:02	1
1447601	99	49	41,5	cyclictest	1542681	-21	timerandwakeup	22:20:38	1
1447599	99	48	41,5	cyclictest	1656346	-21	head	00:30:21	0
1447599	99	48	40,6	cyclictest	1474072	-21	cat	20:50:35	0
1447599	99	48	40,6	cyclictest	1464007	-21	unixbench-2d	20:10:38	0
1447601	99	47	39,6	cyclictest	1455510	-21	aten_r7power_en	19:40:15	1
1447601	99	47	38,7	cyclictest	1620873	-21	aten_r7power_en	23:50:16	1
1447599	99	47	40,5	cyclictest	1497093	-21	gltestperf	21:30:21	0
1447599	99	47	39,6	cyclictest	1466941	-21	cut	20:25:16	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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