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 Wed Dec 10, 2025 12:44:07)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1375776	99	147	125,10	cyclictest	1404419	-21	kworker/u4:5+events_unbound	08:59:10	0
1375776	99	144	124,8	cyclictest	1439977	-21	kworker/u4:3+events_unbound	10:24:27	0
1375776	99	139	132,5	cyclictest	1423848	-21	kworker/u4:13+events_unbound	09:39:18	0
1375777	99	134	127,5	cyclictest	1427195	-21	kworker/u4:4+events_unbound	10:04:21	1
1375776	99	124	116,6	cyclictest	1531167	-21	kworker/u4:8+events_unbound	12:29:47	0
1375776	99	124	114,7	cyclictest	1439977	-21	kworker/u4:3+events_unbound	10:09:23	0
1375776	99	121	111,7	cyclictest	1449276	-21	kworker/u4:16+events_unbound	10:34:28	0
1375777	99	118	109,7	cyclictest	1514918	-21	kworker/u4:2+events_unbound	12:14:45	1
1375776	99	118	111,5	cyclictest	1417637	-21	kworker/u4:0+events_unbound	09:29:15	0
1375776	99	117	96,7	cyclictest	1430486	-21	kworker/u4:1+events_unbound	09:59:20	0
1375776	99	117	110,5	cyclictest	1362902	-21	kworker/u4:15+events_unbound	07:33:58	0
1375776	99	117	109,6	cyclictest	1470119	-21	kworker/u4:2+events_unbound	10:54:28	0
1375776	99	116	108,6	cyclictest	1393923	-21	kworker/u4:5+events_unbound	08:34:07	0
1375777	99	106	89,6	cyclictest	1414620	-21	kworker/u4:8+events_unbound	09:24:16	1
1375777	99	105	85,5	cyclictest	1478543	-21	kworker/u4:6+events_unbound	11:29:37	1
1375776	99	105	96,7	cyclictest	1383526	-21	kworker/u4:0+events_unbound	08:14:02	0
1375776	99	101	92,7	cyclictest	1433678	-21	kworker/u4:6+events_unbound	09:54:20	0
1375776	99	100	92,6	cyclictest	1384833	-21	kworker/u4:8+events_unbound	08:54:10	0
1375776	99	99	90,7	cyclictest	1386121	-21	kworker/u4:14+events_unbound	09:04:11	0
1375777	99	98	90,5	cyclictest	1417638	-21	kworker/u4:1+events_unbound	09:34:17	1
1375776	99	94	86,6	cyclictest	1427191	-21	kworker/u4:0+events_unbound	09:49:20	0
1375777	99	92	83,7	cyclictest	1475697	-21	kworker/u4:9+events_unbound	11:14:34	1
1375777	99	92	83,7	cyclictest	1475697	-21	kworker/u4:9+events_unbound	11:14:34	1
1375776	99	92	84,6	cyclictest	1362902	-21	kworker/u4:15+events_unbound	07:23:58	0
1375776	99	90	82,6	cyclictest	1384833	-21	kworker/u4:8+events_unbound	08:04:03	0
1375777	99	88	79,7	cyclictest	1393927	-21	kworker/u4:20+events_unbound	08:54:09	1
1375776	99	88	79,6	cyclictest	1383526	-21	kworker/u4:0+events_unbound	07:38:59	0
1375776	99	88	75,6	cyclictest	1386121	-21	kworker/u4:14+events_unbound	08:49:09	0
1375776	99	87	79,6	cyclictest	1521093	-21	kworker/u4:5+events_unbound	12:24:47	0
1375776	99	87	79,6	cyclictest	1383526	-21	kworker/u4:0+events_unbound	08:29:04	0
1375776	99	87	79,6	cyclictest	1375693	-21	kworker/u4:1+events_unbound	08:19:03	0
1375776	99	87	79,6	cyclictest	1375693	-21	kworker/u4:1+events_unbound	08:19:03	0
1375777	99	86	78,6	cyclictest	1487918	-21	kworker/u4:10+events_unbound	11:34:38	1
1375776	99	86	73,5	cyclictest	1375693	-21	kworker/u4:1+events_unbound	08:24:05	0
1375777	99	85	77,6	cyclictest	1387403	-21	kworker/u4:17+events_unbound	08:05:01	1
1375776	99	84	77,5	cyclictest	1386121	-21	kworker/u4:14+events_unbound	08:44:08	0
1375776	99	84	76,6	cyclictest	1383526	-21	kworker/u4:0+events_unbound	07:54:02	0
1375777	99	82	6,9	cyclictest	17	1	rcu_preempt	12:20:29	1
1375777	99	80	64,8	cyclictest	1508384	-21	kworker/u4:7+events_unbound	11:54:41	1
1375777	99	78	70,6	cyclictest	1534737	-21	kworker/u4:15+events_unbound	12:34:49	1
1375776	99	78	72,3	cyclictest	1494894	-21	kworker/u4:15+events_unbound	11:34:37	0
1375777	99	76	68,6	cyclictest	1475697	-21	kworker/u4:9+events_unbound	11:24:37	1
1375777	99	76	68,6	cyclictest	1387403	-21	kworker/u4:17+events_unbound	08:14:05	1
1375776	99	75	67,6	cyclictest	1386120	-21	kworker/u4:12+events_unbound	07:49:02	0
1375777	99	72	63,6	cyclictest	1399178	-21	kworker/u4:6+events_unbound	08:44:05	1
1375776	99	72	64,6	cyclictest	1451957	-21	kworker/u4:23+events_unbound	10:44:30	0
1375777	99	71	63,6	cyclictest	1511622	-21	kworker/u4:8+events_unbound	11:59:43	1
1375776	99	71	61,8	cyclictest	1478540	-21	kworker/u4:0+events_unbound	11:09:31	0
1375776	99	70	62,6	cyclictest	1399178	-21	kworker/u4:6+events_unbound	08:39:06	0
1375776	99	69	61,6	cyclictest	1387408	-21	kworker/u4:18+events_unbound	07:59:02	0
1375776	99	68	61,5	cyclictest	1378365	-21	kworker/u4:10+events_unbound	07:30:01	0
1375776	99	68	60,6	cyclictest	1454885	-21	kworker/u4:24+events_unbound	10:29:27	0
1375777	99	67	58,6	cyclictest	1386121	-21	kworker/u4:14+events_unbound	08:15:02	1
1375777	99	67	58,6	cyclictest	1386121	-21	kworker/u4:14+events_unbound	08:15:01	1
1375776	99	67	60,5	cyclictest	1375693	-21	kworker/u4:1+events_unbound	08:09:04	0
1375776	99	67	55,7	cyclictest	0	-21	swapper/0	12:15:54	0
1375777	99	66	58,6	cyclictest	1446184	-21	kworker/u4:1+events_unbound	10:24:25	1
1375777	99	66	57,6	cyclictest	1378365	-21	kworker/u4:10+events_unbound	07:28:57	1
1375776	99	66	16,29	cyclictest	1375775	-21	modprobe	07:09:59	0
1375777	99	65	61,3	cyclictest	1407007	-21	kworker/u4:7+events_unbound	09:09:14	1
1375776	99	65	55,6	cyclictest	0	-21	swapper/0	07:15:06	0
1375776	99	65	55,6	cyclictest	0	-21	swapper/0	07:15:05	0
1375776	99	65	47,13	cyclictest	53	-21	kswapd0	11:00:08	0
1375777	99	62	49,6	cyclictest	1505095	-21	kworker/u4:11+events_unbound	11:49:40	1
1375777	99	61	45,6	cyclictest	1393927	-21	kworker/u4:20+events_unbound	08:49:07	1
1375776	99	61	52,7	cyclictest	1408718	-21	kworker/u4:4+events_unbound	09:12:23	0
1375776	99	61	52,7	cyclictest	1408718	-21	kworker/u4:4+events_unbound	09:12:23	0
1375776	99	61	51,8	cyclictest	1498196	-21	kworker/u4:4+events_unbound	11:39:37	0
1375776	99	60	52,6	cyclictest	1451957	-21	kworker/u4:23+events_unbound	10:39:29	0
1375776	99	59	2,14	cyclictest	1489431	-21	apt-get	11:25:06	0
1375777	99	58	50,6	cyclictest	1386121	-21	kworker/u4:14+events_unbound	08:30:04	1
1375777	99	58	50,6	cyclictest	1384833	-21	kworker/u4:8+events_unbound	08:24:04	1
1375777	99	57	50,4	cyclictest	1467515	-21	kworker/u4:7+events_unbound	11:00:00	1
1375777	99	57	45,8	cyclictest	0	-21	swapper/1	09:50:40	1
1375776	99	57	45,7	cyclictest	1478543	-21	kworker/u4:6+events_unbound	11:17:00	0
1375776	99	57	45,6	cyclictest	1451957	-21	kworker/u4:23+events_unbound	10:45:02	0
1375777	99	56	48,6	cyclictest	1373148	-21	kworker/u4:0+events_unbound	07:18:57	1
1375777	99	56	48,6	cyclictest	1373148	-21	kworker/u4:0+events_unbound	07:18:57	1
1375777	99	55	47,6	cyclictest	1534728	-21	kworker/u4:3+events_unbound	12:39:49	1
1375777	99	55	45,7	cyclictest	1473532	-21	apt-get	11:00:12	1
1375776	99	55	46,5	cyclictest	1376963	-21	unixbench_singl	07:10:40	0
1375776	99	55	45,4	cyclictest	1439977	-21	kworker/u4:3+events_unbound	10:11:36	0
1375777	99	54	46,6	cyclictest	398	-21	systemd-logind	09:19:12	1
1375777	99	53	46,5	cyclictest	1451957	-21	kworker/u4:23+events_unbound	10:34:26	1
1375776	99	53	4,40	cyclictest	1498196	-21	kworker/u4:4+rpciod	11:45:12	0
1375776	99	53	37,7	cyclictest	1531165	-21	kworker/u4:4+events_unbound	12:31:36	0
1375777	99	52	44,6	cyclictest	1427196	-21	kworker/u4:5+events_unbound	09:44:18	1
1375777	99	52	44,5	cyclictest	1483800	-21	ssh	11:15:36	1
1375777	99	52	42,7	cyclictest	1384833	-21	kworker/u4:8+events_unbound	08:55:35	1
1375776	99	52	45,5	cyclictest	1511623	-21	kworker/u4:9+events_unbound	12:06:37	0
1375776	99	52	34,15	cyclictest	1520521	-21	grep	12:10:39	0
1375777	99	51	45,4	cyclictest	1378365	-21	kworker/u4:10+events_unbound	07:45:00	1
1375777	99	51	44,5	cyclictest	1453784	-21	grep	10:25:21	1
1375777	99	51	43,6	cyclictest	1423849	-21	kworker/u4:14+events_unbound	09:40:01	1
1375777	99	50	43,5	cyclictest	1383526	-21	kworker/u4:0+events_unbound	08:09:02	1
1375776	99	50	42,6	cyclictest	1411696	-21	kworker/u4:3+events_unbound	09:35:01	0
1375776	99	50	40,7	cyclictest	1500125	-21	fschecks_count	11:40:19	0
1375777	99	49	42,5	cyclictest	1383526	-21	kworker/u4:0+events_unbound	08:30:01	1
1375777	99	49	41,5	cyclictest	1466073	-21	aten_r7power_vo	10:45:20	1
1375776	99	49	43,5	cyclictest	1485043	-21	kworker/u4:0+events_unbound	11:23:36	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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