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 Sep 16, 2025 12:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1310134	99	123	113,8	cyclictest	1316517	-21	kworker/u4:13+events_unbound	07:35:19	1
1310134	99	99	87,9	cyclictest	1320374	-21	kworker/u4:15+events_unbound	08:35:33	1
1310133	99	97	88,6	cyclictest	1355196	-21	kworker/u4:17+events_unbound	09:40:44	0
1310133	99	95	31,57	cyclictest	0	-21	swapper/0	07:10:01	0
1310134	99	94	86,5	cyclictest	1404309	-21	kworker/u4:1+events_unbound	10:51:00	1
1310134	99	94	86,5	cyclictest	1404309	-21	kworker/u4:1+events_unbound	10:50:59	1
1310134	99	93	83,6	cyclictest	1315245	-21	kworker/u4:12+events_unbound	08:45:36	1
1310133	99	93	80,7	cyclictest	19	1	rcuc/0	10:51:00	0
1310133	99	93	80,7	cyclictest	19	1	rcuc/0	10:50:59	0
1310134	99	92	84,5	cyclictest	1313961	-21	kworker/u4:7+events_unbound	07:25:17	1
1310134	99	89	80,6	cyclictest	1407747	-21	kworker/u4:11+events_unbound	11:01:13	1
1310134	99	87	74,9	cyclictest	1312661	-21	kworker/u4:2+events_unbound	07:55:27	1
1310134	99	86	79,5	cyclictest	1443960	-21	kworker/u4:2+events_unbound	12:11:20	1
1310134	99	85	75,7	cyclictest	1349498	-21	kworker/u4:15+events_unbound	09:40:47	1
1310134	99	82	73,7	cyclictest	1337233	-21	kworker/u4:5+events_unbound	08:55:37	1
1310133	99	80	34,5	cyclictest	1435352	-21	aten2__	11:35:17	0
1310134	99	78	68,7	cyclictest	1312661	-21	kworker/u4:2+events_unbound	07:45:22	1
1310134	99	76	66,8	cyclictest	1338508	-21	kworker/u4:7+events_unbound	09:00:40	1
1310134	99	76	44,30	cyclictest	1345648	-21	unixbench_singl	09:15:41	1
1310134	99	76	44,30	cyclictest	1345648	-21	unixbench_singl	09:15:40	1
1310134	99	75	41,30	cyclictest	0	-21	swapper/1	12:25:29	1
1310133	99	75	67,6	cyclictest	1341087	-21	kworker/u4:11+events_unbound	09:20:41	0
1310134	99	72	63,7	cyclictest	1308859	-21	kworker/u4:5+events_unbound	08:00:27	1
1310134	99	72	39,30	cyclictest	0	-21	swapper/1	11:40:31	1
1310134	99	72	39,29	cyclictest	1324767	-21	fschecks_time	08:05:19	1
1310133	99	72	42,28	cyclictest	1366971	-21	ssh	09:50:47	0
1310133	99	72	34,9	cyclictest	1458749	-21	aten_r7power_cu	12:10:16	0
1310134	99	71	63,6	cyclictest	1430375	-21	kworker/u4:5+events_unbound	11:31:17	1
1310134	99	71	39,6	cyclictest	1389568	-21	uname	10:25:35	1
1310134	99	71	37,31	cyclictest	0	-21	swapper/1	11:15:26	1
1310134	99	70	60,7	cyclictest	1308859	-21	kworker/u4:5+events_unbound	07:10:14	1
1310133	99	70	34,6	cyclictest	0	-21	swapper/0	11:05:37	0
1310134	99	69	35,4	cyclictest	0	-21	swapper/1	12:15:22	1
1310133	99	69	64,4	cyclictest	1410566	-21	kworker/u4:5+events_unbound	11:04:59	0
1310133	99	69	49,14	cyclictest	1353744	-21	/usr/sbin/munin	09:30:13	0
1310133	99	69	49,14	cyclictest	1353744	-21	/usr/sbin/munin	09:30:12	0
1310133	99	69	31,5	cyclictest	0	-21	swapper/0	12:15:39	0
1310133	99	69	30,5	cyclictest	1315245	-21	kworker/u4:12-rpciod	07:55:37	0
1310133	99	68	33,6	cyclictest	1432424	-21	gltestperf	11:30:27	0
1310133	99	68	30,9	cyclictest	1449241	-21	fschecks_count	11:55:23	0
1310134	99	67	54,9	cyclictest	37	-21	kcompactd0	12:02:49	1
1310133	99	67	58,6	cyclictest	1312661	-21	kworker/u4:2+events_unbound	07:50:23	0
1310133	99	67	34,31	cyclictest	1394088	-21	kworker/u4:14-rpciod	10:35:16	0
1310133	99	67	30,5	cyclictest	0	-21	swapper/0	11:45:29	0
1310134	99	66	58,6	cyclictest	1324230	-21	kworker/u4:13+events_unbound	09:45:47	1
1310134	99	66	33,7	cyclictest	0	-21	swapper/1	07:50:23	1
1310133	99	66	36,5	cyclictest	1429449	-21	rm	11:25:32	0
1310134	99	65	57,6	cyclictest	1315243	-21	kworker/u4:3+events_unbound	09:55:48	1
1310133	99	65	36,26	cyclictest	1316517	-21	kworker/u4:13-rpciod	07:35:36	0
1310133	99	65	32,5	cyclictest	1447335	-21	kworker/u4:6-xprtiod	12:05:41	0
1310134	99	64	55,6	cyclictest	1349498	-21	kworker/u4:15+events_unbound	09:25:42	1
1310133	99	64	32,4	cyclictest	0	-21	swapper/0	08:35:19	0
1310133	99	64	31,5	cyclictest	0	-21	swapper/0	07:40:29	0
1310133	99	64	26,6	cyclictest	1392468	-21	aten_r7power_po	10:30:17	0
1310134	99	63	51,8	cyclictest	37	-21	kcompactd0	12:22:15	1
1310133	99	63	30,6	cyclictest	1357194	-21	fschecks_count	09:35:21	0
1310133	99	63	29,5	cyclictest	0	-21	swapper/0	09:55:34	0
1310134	99	62	52,8	cyclictest	1315243	-21	kworker/u4:3+events_unbound	07:40:21	1
1310133	99	62	54,6	cyclictest	1308860	-21	kworker/u4:6+events_unbound	07:15:15	0
1310133	99	62	27,5	cyclictest	1332144	-21	latency_hist	08:35:02	0
1310133	99	61	56,3	cyclictest	1467465	-21	kworker/u4:1+events_unbound	12:36:24	0
1310133	99	61	28,5	cyclictest	0	-21	swapper/0	11:20:01	0
1310134	99	60	50,7	cyclictest	1373936	-21	kworker/u4:6+events_unbound	10:45:58	1
1310133	99	59	51,6	cyclictest	1420342	-21	kworker/u4:12+events_unbound	11:41:14	0
1310133	99	58	50,5	cyclictest	1370613	-21	kworker/u4:11+events_unbound	10:00:48	0
1310133	99	58	48,7	cyclictest	1315243	-21	kworker/u4:3+events_unbound	08:50:39	0
1310133	99	57	47,7	cyclictest	1363507	-21	mailstats	09:45:39	0
1310134	99	56	49,5	cyclictest	1341607	-21	/usr/sbin/munin	09:10:19	1
1310134	99	56	49,5	cyclictest	1341607	-21	/usr/sbin/munin	09:10:19	1
1310133	99	56	51,3	cyclictest	1370603	-21	kworker/u4:0+events_unbound	10:05:51	0
1310133	99	56	36,18	cyclictest	1383178	-21	sed	10:15:41	0
1310134	99	55	46,6	cyclictest	1407745	-21	kworker/u4:9+events_unbound	11:11:13	1
1310134	99	55	37,11	cyclictest	1326801	-21	modprobe	08:15:00	1
1310134	99	54	46,6	cyclictest	1341087	-21	kworker/u4:11+events_unbound	09:20:44	1
1310134	99	54	44,5	cyclictest	0	-21	swapper/1	10:35:35	1
1310134	99	54	41,10	cyclictest	1308860	-21	kworker/u4:6+events_unbound	07:30:17	1
1310133	99	54	45,7	cyclictest	1416934	-21	kworker/u4:8+events_unbound	11:21:15	0
1310134	99	53	44,6	cyclictest	1313961	-21	kworker/u4:7+events_unbound	08:25:33	1
1310133	99	53	45,6	cyclictest	1443960	-21	kworker/u4:2+events_unbound	12:26:22	0
1310133	99	53	45,6	cyclictest	1397477	-21	kworker/u4:16+events_unbound	10:46:00	0
1310133	99	53	45,6	cyclictest	1344687	-21	/usr/sbin/munin	09:15:20	0
1310133	99	53	45,6	cyclictest	1344687	-21	/usr/sbin/munin	09:15:20	0
1310133	99	53	38,11	cyclictest	1467144	-21	sh	12:21:09	0
1310134	99	52	44,6	cyclictest	1407745	-21	kworker/u4:9+events_unbound	11:06:14	1
1310134	99	52	41,9	cyclictest	1354587	-21	sshd	09:30:43	1
1310134	99	52	41,9	cyclictest	1354587	-21	sshd	09:30:43	1
1310133	99	52	45,5	cyclictest	1319620	-21	fschecks_time	07:45:22	0
1310134	99	51	43,6	cyclictest	1366561	-21	grep	09:50:41	1
1310134	99	51	42,5	cyclictest	0	-21	swapper/1	10:15:25	1
1310134	99	51	40,9	cyclictest	1477747	-21	diskmemload	12:35:41	1
1310133	99	51	42,7	cyclictest	1328906	-21	sshd	08:20:31	0
1310133	99	51	42,6	cyclictest	1328072	-21	kworker/u4:4+events_unbound	09:05:40	0
1310134	99	50	44,5	cyclictest	1310130	-21	cyclictest	11:21:15	1
1310134	99	50	43,5	cyclictest	1334551	-21	head	08:40:36	1
1310134	99	50	42,5	cyclictest	0	-21	swapper/1	08:15:30	1
1310134	99	50	40,7	cyclictest	0	-21	swapper/1	11:45:31	1
1310133	99	50	44,4	cyclictest	1386203	-21	cat	10:20:38	0
1310133	99	50	44,4	cyclictest	1386203	-21	cat	10:20:37	0
1310133	99	50	42,6	cyclictest	1311404	-21	awk	07:15:01	0
1310133	99	50	41,7	cyclictest	1419939	-21	systemd	11:11:13	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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