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 Thu Jul 09, 2026 00:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1341576	99	108	99,7	cyclictest	1450685	-21	kworker/u4:4+events_unbound	23:06:31	0
1341576	99	102	88,6	cyclictest	1481318	-21	kworker/u4:4+events_unbound	23:16:31	0
1341576	99	98	87,8	cyclictest	53	-21	kswapd0	22:15:12	0
1341576	99	97	89,6	cyclictest	1411019	-21	kworker/u4:6+events_unbound	22:06:20	0
1341577	99	96	87,6	cyclictest	1538536	-21	kworker/u4:12+events_unbound	00:18:22	1
1341576	99	88	81,5	cyclictest	1338985	-21	kworker/u4:9+events_unbound	19:30:50	0
1341576	99	88	73,6	cyclictest	1337781	-21	kworker/u4:6+events_unbound	19:25:50	0
1341576	99	87	79,6	cyclictest	1349279	-21	kworker/u4:8+events_unbound	20:15:59	0
1341576	99	87	75,9	cyclictest	53	-21	kswapd0	23:55:11	0
1341577	99	86	79,5	cyclictest	1499178	-21	kworker/u4:2+events_unbound	23:46:56	1
1341576	99	82	74,6	cyclictest	1100960	-21	kworker/u4:0+events_unbound	19:15:46	0
1341576	99	81	74,5	cyclictest	1349275	-21	kworker/u4:3+events_unbound	19:50:53	0
1341576	99	79	71,6	cyclictest	1346739	-21	kworker/u4:4+events_unbound	21:06:09	0
1341576	99	78	70,6	cyclictest	1354470	-21	kworker/u4:0+events_unbound	20:00:58	0
1341576	99	77	70,5	cyclictest	1542957	-21	kworker/u4:11+events_unbound	00:25:51	0
1341577	99	75	9,38	cyclictest	1461574	-21	ssh	22:50:14	1
1341576	99	74	66,6	cyclictest	1375205	-21	kworker/u4:10+events_unbound	22:21:23	0
1341576	99	71	56,12	cyclictest	1479448	-21	fschecks_count	23:10:19	0
1341577	99	70	63,5	cyclictest	1424497	-21	kworker/u4:9+events_unbound	22:31:26	1
1341577	99	69	62,5	cyclictest	1490281	-21	kworker/u4:2+events_unbound	23:26:33	1
1341577	99	67	61,4	cyclictest	1516307	-21	kworker/u4:1+events_unbound	23:58:14	1
1341576	99	67	48,14	cyclictest	1501382	-21	ssh	23:35:18	0
1341576	99	65	57,6	cyclictest	1351928	-21	kworker/u4:13+events_unbound	20:11:00	0
1341576	99	65	57,6	cyclictest	1351928	-21	kworker/u4:13+events_unbound	20:10:59	0
1341577	99	63	56,5	cyclictest	1499180	-21	kworker/u4:6+events_unbound	23:41:37	1
1341577	99	62	56,4	cyclictest	1392850	-21	kworker/u4:2+events_unbound	21:40:01	1
1341577	99	62	54,6	cyclictest	1355764	-21	kworker/u4:7+events_unbound	20:31:01	1
1341577	99	62	48,5	cyclictest	1485798	-21	kworker/u4:5+events_unbound	23:20:03	1
1341576	99	62	47,10	cyclictest	1450684	-21	kworker/u4:0-xprtiod	22:59:57	0
1341576	99	59	51,6	cyclictest	1081167	-21	kworker/u4:1+events_unbound	19:55:54	0
1341576	99	59	3,50	cyclictest	0	-21	swapper/0	21:45:10	0
1341577	99	58	51,5	cyclictest	1414868	-21	kworker/u4:8+events_unbound	22:01:19	1
1341576	99	58	7,39	cyclictest	1372712	-21	ssh	21:10:13	0
1341576	99	58	48,6	cyclictest	0	-21	swapper/0	22:00:31	0
1341576	99	58	44,9	cyclictest	1415513	-21	kworker/u4:9-rpciod	21:57:46	0
1341577	99	57	45,6	cyclictest	1379760	-21	kworker/u4:3+events_unbound	21:21:12	1
1341577	99	57	42,8	cyclictest	1459633	-21	kworker/u4:15-rpciod	22:48:01	1
1341576	99	57	37,18	cyclictest	1515297	-21	timerandwakeup	23:50:39	0
1341576	99	57	37,17	cyclictest	1448755	-21	fschecks_time	22:35:21	0
1341577	99	56	45,6	cyclictest	1420016	-21	kworker/u4:4+events_unbound	22:10:00	1
1341577	99	55	47,6	cyclictest	378	-21	dbus-daemon	00:23:25	1
1341577	99	55	47,6	cyclictest	1411017	-21	kworker/u4:1+events_unbound	22:20:03	1
1341576	99	55	48,5	cyclictest	1346739	-21	kworker/u4:4+events_unbound	19:37:44	0
1341576	99	55	46,7	cyclictest	1355764	-21	kworker/u4:7+events_unbound	20:40:07	0
1341576	99	55	45,7	cyclictest	1549981	-21	ssh	00:30:33	0
1341576	99	55	45,7	cyclictest	1549981	-21	ssh	00:30:33	0
1341577	99	54	46,5	cyclictest	1375210	-21	kworker/u4:18+events_unbound	21:15:04	1
1341577	99	54	45,6	cyclictest	1352409	-21	fschecks_count	19:50:18	1
1341577	99	53	45,5	cyclictest	0	-21	swapper/1	23:05:13	1
1341577	99	53	44,7	cyclictest	1532303	-21	/usr/sbin/munin	00:10:22	1
1341577	99	53	36,6	cyclictest	1354470	-21	kworker/u4:0+events_unbound	20:45:01	1
1341576	99	53	1,7	cyclictest	53	-21	kswapd0	23:25:09	0
1341577	99	52	36,5	cyclictest	1534129	-21	kworker/u4:3+events_unbound	00:28:28	1
1341576	99	52	8,31	cyclictest	1444831	-21	rm	22:30:36	0
1341576	99	52	44,6	cyclictest	1525244	-21	kworker/u4:2+events_unbound	00:08:20	0
1341576	99	52	41,8	cyclictest	0	-21	swapper/0	21:31:12	0
1341577	99	51	43,6	cyclictest	1313843	-21	kworker/u4:8+events_unbound	19:10:45	1
1341577	99	51	41,8	cyclictest	1485795	-21	kworker/u4:0+events_unbound	23:36:36	1
1341577	99	51	36,11	cyclictest	1500766	-21	modprobe	23:35:00	1
1341576	99	51	44,5	cyclictest	1529676	-21	kworker/u4:9+events_unbound	00:17:46	0
1341576	99	51	43,6	cyclictest	1459633	-21	kworker/u4:15+events_unbound	22:47:45	0
1341576	99	51	43,6	cyclictest	1377415	-21	/usr/sbin/munin	21:15:17	0
1341577	99	50	38,7	cyclictest	0	-21	swapper/1	00:32:44	1
1341577	99	50	38,7	cyclictest	0	-21	swapper/1	00:32:44	1
1341576	99	50	7,39	cyclictest	0	-21	swapper/0	19:45:12	0
1341576	99	50	38,5	cyclictest	1354470	-21	kworker/u4:0+events_unbound	20:55:03	0
1341576	99	50	38,5	cyclictest	1354470	-21	kworker/u4:0+events_unbound	20:55:03	0
1341576	99	50	36,9	cyclictest	1489919	-21	ssh	23:21:40	0
1341577	99	49	42,5	cyclictest	1450684	-21	kworker/u4:0+events_unbound	23:01:31	1
1341577	99	49	42,5	cyclictest	1431844	-21	switchtime	22:15:44	1
1341577	99	49	41,5	cyclictest	1484196	-21	ssh	23:15:26	1
1341576	99	49	43,4	cyclictest	1382977	-21	grep	21:20:39	0
1341576	99	49	42,5	cyclictest	1523674	-21	ssh	00:00:29	0
1341576	99	49	41,5	cyclictest	1430464	-21	latency_hist	22:15:01	0
1341576	99	49	40,7	cyclictest	1556543	-21	sd-accept	00:38:29	0
1341577	99	48	41,5	cyclictest	1453809	-21	diskmemload	22:40:39	1
1341577	99	48	40,6	cyclictest	1349279	-21	kworker/u4:8+events_unbound	19:45:53	1
1341577	99	48	40,5	cyclictest	1371864	-21	ntp_kernel_pll_	21:05:25	1
1341577	99	48	33,10	cyclictest	1364707	-21	modprobe	20:40:00	1
1341576	99	48	40,6	cyclictest	1337781	-21	kworker/u4:6+rpciod	19:25:02	0
1341576	99	48	38,7	cyclictest	1497329	-21	/usr/sbin/munin	23:30:23	0
1341576	99	48	38,7	cyclictest	1404091	-21	latency_hist	21:45:02	0
1341576	99	48	38,5	cyclictest	53	-21	kswapd0	22:40:14	0
1341576	99	48	37,8	cyclictest	1346739	-21	kworker/u4:4-rpciod	19:40:38	0
1341576	99	48	29,6	cyclictest	17	1	rcu_preempt	23:40:40	0
1341576	99	48	27,19	cyclictest	1370341	-21	fschecks_time	21:00:19	0
1341577	99	47	40,5	cyclictest	1349689	-21	df_abs	19:40:16	1
1341577	99	47	38,7	cyclictest	1404369	-21	aten_r7power_cu	21:45:21	1
1341576	99	47	40,5	cyclictest	1395294	-21	aten_r7power_en	21:35:15	0
1341577	99	46	39,5	cyclictest	1476857	-21	kworker/u4:2+events_unbound	23:11:30	1
1341577	99	46	39,5	cyclictest	1390405	-21	grep	21:30:00	1
1341577	99	46	39,5	cyclictest	1369464	-21	sendmail_mailqu	20:55:36	1
1341577	99	46	39,5	cyclictest	1369464	-21	sendmail_mailqu	20:55:36	1
1341577	99	46	38,5	cyclictest	1400733	-21	mailstats	21:40:37	1
1341577	99	46	37,7	cyclictest	1344592	-21	fschecks_count	19:20:18	1
1341576	99	46	39,5	cyclictest	1440289	-21	diskmemload	22:25:31	0
1341576	99	46	39,5	cyclictest	1440289	-21	diskmemload	22:25:30	0
1341576	99	46	35,8	cyclictest	1357139	-21	latency_hist	20:10:01	0
1341576	99	46	26,17	cyclictest	0	-21	swapper/0	21:50:34	0
1341576	99	46	23,14	cyclictest	1473007	-21	ssh	23:02:46	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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