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 Mar 03, 2026 00:44:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1101160	99	125	106,5	cyclictest	1207795	-21	kworker/u4:11+events_unbound	22:42:59	1
1101160	99	107	95,6	cyclictest	1284374	-21	kworker/u4:10+events_unbound	00:08:09	1
1101160	99	106	98,6	cyclictest	1237772	-21	kworker/u4:4+events_unbound	23:28:05	1
1101160	99	97	89,6	cyclictest	1203446	-21	kworker/u4:2+events_unbound	23:03:02	1
1101158	99	94	86,6	cyclictest	1172938	-21	kworker/u4:1+events_unbound	21:57:51	0
1101158	99	86	81,3	cyclictest	1164882	-21	kworker/u4:12+events_unbound	21:47:49	0
1101160	99	80	73,5	cyclictest	1098654	-21	kworker/u4:0+events_unbound	20:07:35	1
1101160	99	80	71,6	cyclictest	1099880	-21	kworker/u4:8+events_unbound	19:52:33	1
1101158	99	80	50,18	cyclictest	0	-21	swapper/0	23:10:36	0
1101160	99	77	68,7	cyclictest	1110070	-21	kworker/u4:14+events_unbound	19:45:00	1
1101160	99	76	68,6	cyclictest	1242104	-21	kworker/u4:11+events_unbound	23:23:04	1
1101160	99	76	64,9	cyclictest	0	-21	swapper/1	20:45:08	1
1101158	99	76	69,5	cyclictest	1124092	-21	kworker/u4:16+events_unbound	21:12:44	0
1101158	99	75	67,5	cyclictest	0	-21	swapper/0	23:15:15	0
1101158	99	74	3,59	cyclictest	1261766	-21	ssh	23:40:28	0
1101158	99	74	3,59	cyclictest	1261766	-21	ssh	23:40:28	0
1101160	99	71	64,5	cyclictest	1097438	-21	kworker/u4:2+events_unbound	19:12:27	1
1101160	99	71	63,6	cyclictest	1147403	-21	kworker/u4:2+events_unbound	21:35:03	1
1101158	99	71	59,5	cyclictest	1280132	-21	kworker/u4:2+events_unbound	00:38:14	0
1101158	99	71	33,19	cyclictest	0	-21	swapper/0	19:10:01	0
1101160	99	67	51,5	cyclictest	1106226	-21	kworker/u4:7+events_unbound	19:37:30	1
1101160	99	67	51,5	cyclictest	1106226	-21	kworker/u4:7+events_unbound	19:37:30	1
1101160	99	67	43,16	cyclictest	1115193	-21	modprobe	20:05:01	1
1101158	99	65	56,7	cyclictest	1164252	-21	kworker/u4:10+events_unbound	21:52:50	0
1101158	99	65	56,7	cyclictest	1164252	-21	kworker/u4:10+events_unbound	21:52:50	0
1101158	99	64	57,5	cyclictest	1212174	-21	kworker/u4:18+events_unbound	22:48:00	0
1101158	99	64	57,5	cyclictest	1207795	-21	kworker/u4:11+events_unbound	22:53:01	0
1101158	99	64	54,7	cyclictest	1122825	-21	kworker/u4:13+events_unbound	20:37:40	0
1101158	99	64	54,7	cyclictest	1122825	-21	kworker/u4:13+events_unbound	20:37:40	0
1101158	99	64	17,42	cyclictest	15	1	ktimers/0	22:40:37	0
1101160	99	63	55,6	cyclictest	1181668	-21	kworker/u4:1+events_unbound	22:07:51	1
1101160	99	63	54,7	cyclictest	1263073	-21	kworker/u4:6+events_unbound	23:55:03	1
1101158	99	63	55,6	cyclictest	1275828	-21	kworker/u4:4+events_unbound	00:18:11	0
1101158	99	62	38,11	cyclictest	54	-21	kswapd0	23:55:08	0
1101160	99	61	53,6	cyclictest	1280132	-21	kworker/u4:2+events_unbound	00:20:00	1
1101160	99	61	44,10	cyclictest	1302792	-21	kworker/u4:3	00:30:00	1
1101158	99	61	53,6	cyclictest	1115169	-21	kworker/u4:1+events_unbound	20:02:35	0
1101160	99	60	53,5	cyclictest	1098654	-21	kworker/u4:0+events_unbound	19:57:34	1
1101160	99	60	45,11	cyclictest	0	-21	swapper/1	21:20:12	1
1101158	99	60	50,7	cyclictest	1118975	-21	kworker/u4:8+events_unbound	21:22:46	0
1101158	99	60	44,5	cyclictest	1203451	-21	kworker/u4:9+events_unbound	22:32:57	0
1101158	99	59	51,6	cyclictest	1190353	-21	kworker/u4:9+events_unbound	22:20:59	0
1101160	99	58	51,5	cyclictest	1190348	-21	kworker/u4:2+events_unbound	22:26:00	1
1101160	99	58	47,9	cyclictest	1238272	-21	systemd	23:13:02	1
1101160	99	58	39,14	cyclictest	0	-21	swapper/1	22:15:26	1
1101160	99	57	49,6	cyclictest	1207796	-21	kworker/u4:12+events_unbound	22:37:58	1
1101160	99	57	49,4	cyclictest	1203448	-21	kworker/u4:6+events_unbound	22:32:45	1
1101160	99	57	47,7	cyclictest	1126749	-21	kworker/u4:3+events_unbound	20:55:00	1
1101158	99	57	50,5	cyclictest	1229022	-21	kworker/u4:0+events_unbound	23:38:07	0
1101160	99	56	49,5	cyclictest	1131852	-21	kworker/u4:4+events_unbound	21:07:43	1
1101160	99	56	45,6	cyclictest	1147403	-21	kworker/u4:2+events_unbound	21:31:44	1
1101160	99	56	44,8	cyclictest	37	-21	kcompactd0	23:15:18	1
1101160	99	56	41,9	cyclictest	0	-21	swapper/1	23:45:31	1
1101158	99	56	48,6	cyclictest	1124092	-21	kworker/u4:16+events_unbound	20:57:41	0
1101158	99	56	48,6	cyclictest	1110068	-21	kworker/u4:10+events_unbound	20:47:42	0
1101158	99	56	48,6	cyclictest	1098654	-21	kworker/u4:0+events_unbound	20:17:36	0
1101160	99	55	45,6	cyclictest	1203447	-21	kworker/u4:3+events_unbound	22:49:59	1
1101160	99	55	39,10	cyclictest	0	-21	swapper/1	21:55:37	1
1101158	99	55	48,5	cyclictest	1222820	-21	/usr/sbin/munin	22:55:17	0
1101160	99	54	47,5	cyclictest	1203446	-21	kworker/u4:2+events_unbound	23:07:59	1
1101160	99	54	43,7	cyclictest	1267296	-21	kworker/u4:0+events_unbound	23:50:13	1
1101160	99	54	43,7	cyclictest	1255057	-21	kworker/u4:8+events_unbound	23:33:46	1
1101160	99	54	43,7	cyclictest	1255057	-21	kworker/u4:8+events_unbound	23:33:46	1
1101160	99	54	2,6	cyclictest	17	1	rcu_preempt	21:50:32	1
1101160	99	54	2,6	cyclictest	17	1	rcu_preempt	21:50:32	1
1101158	99	54	43,9	cyclictest	1149950	-21	fschecks_count	21:30:19	0
1101160	99	53	46,5	cyclictest	1097439	-21	kworker/u4:3+events_unbound	19:35:00	1
1101160	99	53	45,6	cyclictest	1131848	-21	kworker/u4:1+events_unbound	21:17:03	1
1101160	99	53	45,6	cyclictest	1131848	-21	kworker/u4:1+events_unbound	21:17:03	1
1101160	99	53	38,10	cyclictest	0	-21	swapper/1	21:40:30	1
1101160	99	52	42,6	cyclictest	1187898	-21	cron	22:15:00	1
1101158	99	52	45,5	cyclictest	1102390	-21	kworker/u4:10+events_unbound	19:17:28	0
1101158	99	52	33,16	cyclictest	0	-21	swapper/0	21:15:16	0
1101158	99	52	33,16	cyclictest	0	-21	swapper/0	21:15:16	0
1101158	99	52	32,17	cyclictest	0	-21	swapper/0	22:15:17	0
1101158	99	52	29,21	cyclictest	1277903	-21	aten2__	00:00:14	0
1101160	99	51	46,4	cyclictest	1212173	-21	kworker/u4:17+events_unbound	22:51:00	1
1101160	99	51	44,5	cyclictest	1110068	-21	kworker/u4:10+events_unbound	20:22:37	1
1101160	99	51	44,5	cyclictest	1097438	-21	kworker/u4:2+events_unbound	19:47:32	1
1101160	99	51	43,6	cyclictest	1275828	-21	kworker/u4:4+events_unbound	00:01:00	1
1101160	99	51	30,15	cyclictest	1131896	-21	diskmemload	23:35:27	1
1101158	99	51	41,8	cyclictest	1255055	-21	sh	23:32:38	0
1101158	99	51	41,8	cyclictest	1255055	-21	sh	23:32:38	0
1101158	99	51	38,10	cyclictest	54	-21	kswapd0	23:20:08	0
1101160	99	50	35,6	cyclictest	1098657	-21	kworker/u4:6+events_unbound	20:37:00	1
1101160	99	50	35,6	cyclictest	1098657	-21	kworker/u4:6+events_unbound	20:37:00	1
1101160	99	50	32,8	cyclictest	1098654	-21	kworker/u4:0+events_unbound	19:16:13	1
1101160	99	50	32,6	cyclictest	1275829	-21	kworker/u4:5+events_unbound	00:13:42	1
1101158	99	50	42,6	cyclictest	1160525	-21	kworker/u4:8+events_unbound	21:42:49	0
1101158	99	50	42,6	cyclictest	1147404	-21	kworker/u4:3+events_unbound	21:27:47	0
1101158	99	50	41,6	cyclictest	0	-21	swapper/0	22:37:57	0
1101160	99	49	42,5	cyclictest	1310159	-21	ssh	00:38:12	1
1101160	99	49	37,8	cyclictest	1192915	-21	fschecks_time	22:20:19	1
1101160	99	49	31,14	cyclictest	0	-21	swapper/1	22:55:35	1
1101158	99	49	42,5	cyclictest	1241474	-21	kworker/u4:9+events_unbound	23:27:00	0
1101160	99	48	42,4	cyclictest	1175466	-21	aten_r7power_po	22:00:16	1
1101160	99	48	38,7	cyclictest	1121555	-21	kworker/u4:5+events_unbound	20:30:14	1
1101158	99	48	41,5	cyclictest	1265255	-21	aten2__	23:45:15	0
1101158	99	48	28,6	cyclictest	0	-21	swapper/0	23:00:26	0
1101158	99	48	27,19	cyclictest	1110525	-21	fschecks_count	19:45:18	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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