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 Jan 22, 2026 12:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1019950	99	126	117,6	cyclictest	1025047	-21	kworker/u4:4+events_unbound	07:35:01	0
1019950	99	118	109,6	cyclictest	1116783	-21	kworker/u4:6+events_unbound	10:45:57	0
1019950	99	103	96,5	cyclictest	1124359	-21	kworker/u4:11+events_unbound	11:16:01	0
1019950	99	99	94,3	cyclictest	1116782	-21	kworker/u4:4+events_unbound	10:40:55	0
1019951	99	97	88,6	cyclictest	1031354	-21	kworker/u4:17+events_unbound	08:15:21	1
1019950	99	96	89,5	cyclictest	1022500	-21	kworker/u4:11+events_unbound	07:45:06	0
1019951	99	87	79,6	cyclictest	1025049	-21	kworker/u4:6+events_unbound	07:30:00	1
1019951	99	82	73,7	cyclictest	1036485	-21	kworker/u4:7+events_unbound	08:45:29	1
1019951	99	82	10,30	cyclictest	1163939	-21	sh	11:45:13	1
1019951	99	80	71,6	cyclictest	1027563	-21	kworker/u4:15+events_unbound	08:35:26	1
1019950	99	78	71,5	cyclictest	1149168	-21	kworker/u4:10+events_unbound	11:31:05	0
1019950	99	77	69,6	cyclictest	1089267	-21	kworker/u4:0+events_unbound	11:11:00	0
1019951	99	76	65,7	cyclictest	1061603	-21	kworker/u4:1+events_unbound	09:25:32	1
1019951	99	75	68,5	cyclictest	1170333	-21	kworker/u4:4+events_unbound	11:56:06	1
1019951	99	73	42,6	cyclictest	1032862	-21	aten2__	08:00:17	1
1019951	99	73	42,6	cyclictest	1032862	-21	aten2__	08:00:17	1
1019951	99	72	64,6	cyclictest	1016194	-21	kworker/u4:3+events_unbound	07:25:00	1
1019950	99	72	56,8	cyclictest	1183034	-21	kworker/u4:14+events_unbound	12:09:43	0
1019951	99	71	61,7	cyclictest	1016198	-21	kworker/u4:9+events_unbound	07:20:00	1
1019950	99	70	61,6	cyclictest	1174580	-21	kworker/u4:0+events_unbound	12:16:09	0
1019950	99	70	61,6	cyclictest	1174580	-21	kworker/u4:0+events_unbound	12:16:09	0
1019950	99	69	63,5	cyclictest	1016193	-21	kworker/u4:2+events_unbound	07:50:08	0
1019950	99	68	46,14	cyclictest	54	-21	kswapd0	11:40:10	0
1019950	99	66	58,6	cyclictest	1157642	-21	kworker/u4:4+events_unbound	11:46:06	0
1019950	99	66	50,7	cyclictest	1080641	-21	kworker/u4:8+events_unbound	10:54:00	0
1019950	99	65	53,5	cyclictest	1016193	-21	kworker/u4:2+events_unbound	08:10:20	0
1019951	99	64	57,5	cyclictest	1084940	-21	kworker/u4:2+events_unbound	10:05:38	1
1019950	99	64	52,7	cyclictest	0	-21	swapper/0	10:05:28	0
1019950	99	63	60,2	cyclictest	1077039	-21	kworker/u4:15+events_unbound	09:45:01	0
1019950	99	63	56,5	cyclictest	1128581	-21	kworker/u4:2+events_unbound	11:09:44	0
1019950	99	63	56,5	cyclictest	1036484	-21	kworker/u4:6+events_unbound	08:40:02	0
1019951	99	62	45,8	cyclictest	1027563	-21	kworker/u4:15+events_unbound	08:05:20	1
1019950	99	62	55,5	cyclictest	1046762	-21	kworker/u4:9+events_unbound	09:09:43	0
1019950	99	62	54,6	cyclictest	1089267	-21	kworker/u4:0+events_unbound	10:20:02	0
1019951	99	61	53,6	cyclictest	1119441	-21	kworker/u4:3+events_unbound	11:21:02	1
1019950	99	59	48,9	cyclictest	1038480	-21	systemd	08:20:22	0
1019950	99	58	51,5	cyclictest	1199330	-21	kworker/u4:4+events_unbound	12:37:44	0
1019950	99	58	50,6	cyclictest	1183034	-21	kworker/u4:14+events_unbound	12:11:07	0
1019950	99	56	43,10	cyclictest	1100900	-21	/usr/sbin/munin	10:15:38	0
1019950	99	56	36,17	cyclictest	1078517	-21	ssh	09:50:17	0
1019951	99	55	6,25	cyclictest	1079175	-21	ssh	09:50:28	1
1019951	99	55	45,6	cyclictest	1087784	-21	ld	10:00:32	1
1019950	99	55	47,6	cyclictest	1174583	-21	kworker/u4:8+events_unbound	11:58:00	0
1019950	99	55	44,9	cyclictest	1137065	-21	kworker/u4:12+events_unbound	11:22:59	0
1019950	99	55	41,5	cyclictest	1084939	-21	kworker/u4:1+events_unbound	09:57:43	0
1019951	99	54	44,8	cyclictest	1096701	-21	uptime	10:10:38	1
1019950	99	54	46,6	cyclictest	1193311	-21	/usr/sbin/munin	12:20:15	0
1019951	99	53	46,5	cyclictest	1144934	-21	kworker/u4:0+events_unbound	11:36:04	1
1019950	99	53	46,5	cyclictest	1072591	-21	/usr/sbin/munin	09:35:18	0
1019950	99	53	12,11	cyclictest	1168984	-21	ps	11:50:34	0
1019951	99	52	5,39	cyclictest	1100406	-21	sh	10:15:30	1
1019951	99	52	46,4	cyclictest	1074621	-21	kworker/u4:14+events_unbound	09:50:02	1
1019951	99	52	46,4	cyclictest	1016193	-21	kworker/u4:2+events_unbound	08:15:00	1
1019951	99	52	44,6	cyclictest	1045508	-21	kworker/u4:5+events_unbound	09:10:32	1
1019951	99	52	40,9	cyclictest	0	-21	swapper/1	11:25:14	1
1019950	99	52	6,19	cyclictest	1112471	-21	ssh	10:30:17	0
1019950	99	52	45,5	cyclictest	1195104	-21	kworker/u4:2+events_unbound	12:25:02	0
1019950	99	52	39,6	cyclictest	1080641	-21	kworker/u4:8+events_unbound	10:58:43	0
1019950	99	52	39,6	cyclictest	1080641	-21	kworker/u4:8+events_unbound	10:58:43	0
1019950	99	51	44,5	cyclictest	1016194	-21	kworker/u4:3+events_unbound	08:09:01	0
1019950	99	51	43,6	cyclictest	1199334	-21	kworker/u4:8+events_unbound	12:32:01	0
1019950	99	51	38,6	cyclictest	1080641	-21	kworker/u4:8+events_unbound	10:37:02	0
1019951	99	50	43,5	cyclictest	1039631	-21	/usr/sbin/munin	08:25:22	1
1019951	99	50	42,6	cyclictest	1193431	-21	fschecks_count	12:20:19	1
1019951	99	50	37,10	cyclictest	0	-21	swapper/1	11:10:32	1
1019951	99	50	34,11	cyclictest	0	-21	swapper/1	12:10:34	1
1019950	99	50	43,5	cyclictest	1147616	-21	fschecks_time	11:25:20	0
1019950	99	50	37,10	cyclictest	1060354	-21	ntpq	09:20:35	0
1019950	99	50	33,15	cyclictest	0	-21	swapper/0	10:15:01	0
1019950	99	50	31,16	cyclictest	0	-21	swapper/0	09:30:00	0
1019951	99	49	42,5	cyclictest	1123130	-21	sendmail_mailqu	10:55:35	1
1019951	99	49	42,5	cyclictest	1123130	-21	sendmail_mailqu	10:55:35	1
1019951	99	49	34,11	cyclictest	37	-21	kcompactd0	12:30:33	1
1019950	99	49	42,5	cyclictest	1069680	-21	kworker/u4:10+events_unbound	09:49:00	0
1019950	99	49	42,5	cyclictest	1037756	-21	kworker/u4:0+events_unbound	09:16:00	0
1019950	99	49	42,5	cyclictest	1019948	-21	cyclictest	07:35:01	0
1019950	99	49	41,6	cyclictest	1027563	-21	kworker/u4:15+events_unbound	08:03:01	0
1019950	99	49	41,6	cyclictest	1027563	-21	kworker/u4:15+events_unbound	08:03:01	0
1019951	99	48	42,4	cyclictest	1073203	-21	proc_pri	09:35:35	1
1019951	99	48	40,6	cyclictest	1117037	-21	systemd	10:40:54	1
1019951	99	48	39,7	cyclictest	1104335	-21	fschecks_time	10:20:18	1
1019951	99	48	38,7	cyclictest	1122067	-21	latency_hist	10:55:03	1
1019950	99	48	7,33	cyclictest	0	-21	swapper/0	07:10:12	0
1019950	99	48	42,5	cyclictest	1037756	-21	kworker/u4:0+events_unbound	09:31:00	0
1019950	99	48	42,4	cyclictest	1045504	-21	kworker/u4:1+events_unbound	08:55:02	0
1019950	99	48	41,5	cyclictest	1027562	-21	kworker/u4:14+events_unbound	07:55:02	0
1019950	99	48	38,7	cyclictest	1177704	-21	unixbench_multi	12:00:40	0
1019951	99	47	5,28	cyclictest	1127139	-21	ssh	11:00:29	1
1019951	99	47	40,5	cyclictest	1209608	-21	latency_hist	12:40:04	1
1019951	99	47	39,6	cyclictest	0	-21	swapper/1	09:55:27	1
1019951	99	47	37,8	cyclictest	1047947	-21	unixbench_multi	08:55:36	1
1019950	99	47	40,5	cyclictest	1159470	-21	munin-run	11:40:00	0
1019950	99	47	39,6	cyclictest	1025047	-21	kworker/u4:4+events_unbound	07:28:33	0
1019950	99	47	36,9	cyclictest	1051256	-21	fschecks_time	09:10:19	0
1019950	99	47	35,5	cyclictest	1016194	-21	kworker/u4:3+events_unbound	07:23:04	0
1019950	99	47	11,27	cyclictest	1019948	-21	cyclictest	07:10:00	0
1019950	99	47	11,27	cyclictest	1019948	-21	cyclictest	07:10:00	0
1019951	99	46	41,4	cyclictest	1037756	-21	kworker/u4:0+events_unbound	09:15:31	1
1019951	99	46	40,4	cyclictest	1132017	-21	systemd	11:05:59	1
1019951	99	46	39,5	cyclictest	1188994	-21	aten_r7power_en	12:15:16	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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