OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of system in rack #0, 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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack0slot2.osadl.org (updated Sat Jun 13, 2026 12:43:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2314395	2	98	0,1	sleep7	2314393	-21	ssh	10:54:23	7
2314395	2	98	0,1	sleep7	2314393	-21	ssh	10:54:23	7
1815088	2	58	48,7	sleep4	0	-21	swapper/4	07:02:54	4
1815051	2	58	47,8	sleep5	0	-21	swapper/5	07:02:23	5
1815619	99	45	39,5	cyclictest	1886420	-21	latency_hist	07:41:03	7
1815619	99	42	37,4	cyclictest	2267075	-21	latency_hist	10:36:02	7
1815610	99	42	41,1	cyclictest	2144297	-21	kworker/u16:0+flush-8:0	09:46:02	5
1815614	99	40	38,2	cyclictest	2170536	-21	kworker/u16:2+events_unbound	10:53:29	6
1815614	99	40	38,2	cyclictest	2170536	-21	kworker/u16:2+events_unbound	10:53:29	6
1806043	2	39	3,30	sleep7	0	-21	swapper/7	07:01:04	7
1815614	99	38	36,2	cyclictest	2482361	-21	kworker/u16:3+events_unbound	12:13:24	6
1815614	99	38	36,2	cyclictest	2352726	-21	kworker/u16:1+events_unbound	11:45:53	6
1815614	99	38	36,2	cyclictest	2204441	-21	kworker/u16:0+events_unbound	10:30:29	6
1815614	99	38	36,2	cyclictest	2170536	-21	kworker/u16:2+events_unbound	10:12:18	6
1815614	99	37	35,2	cyclictest	2482361	-21	kworker/u16:3+events_unbound	12:31:54	6
1815614	99	37	35,2	cyclictest	2352726	-21	kworker/u16:1+events_unbound	12:00:34	6
1815614	99	37	35,2	cyclictest	2148134	-21	kworker/u16:4+events_unbound	10:05:49	6
1815614	99	37	35,2	cyclictest	2083983	-21	kworker/u16:0+events_unbound	09:31:28	6
1815614	99	37	35,2	cyclictest	2040331	-21	kworker/u16:5+events_unbound	09:15:38	6
1815619	99	36	34,1	cyclictest	2049906	-21	diskmemload	10:45:20	7
1815619	99	36	0,34	cyclictest	1924532	-21	pool-/usr/libex	07:57:12	7
1815614	99	36	34,2	cyclictest	2352726	-21	kworker/u16:1+events_unbound	11:35:00	6
1815614	99	36	34,2	cyclictest	2352726	-21	kworker/u16:1+events_unbound	11:35:00	6
1815614	99	36	34,2	cyclictest	2204441	-21	kworker/u16:0+events_unbound	10:23:54	6
1815614	99	36	34,2	cyclictest	2170536	-21	kworker/u16:2+events_unbound	10:48:53	6
1815614	99	36	34,2	cyclictest	2030775	-21	kworker/u16:3+events_unbound	09:07:33	6
1815602	99	36	33,2	cyclictest	2352726	-21	kworker/u16:1+events_unbound	12:26:16	4
1815619	99	35	34,0	cyclictest	0	-21	swapper/7	12:03:44	7
1815619	99	35	34,0	cyclictest	0	-21	swapper/7	11:35:20	7
1815619	99	35	34,0	cyclictest	0	-21	swapper/7	11:35:20	7
1815619	99	35	34,0	cyclictest	0	-21	swapper/7	08:06:04	7
1815614	99	35	33,2	cyclictest	2457522	-21	kworker/u16:0+events_unbound	12:02:08	6
1815614	99	35	33,2	cyclictest	2352726	-21	kworker/u16:1+events_unbound	12:30:48	6
1815614	99	35	33,2	cyclictest	2352726	-21	kworker/u16:1+events_unbound	11:28:24	6
1815614	99	35	33,2	cyclictest	2325056	-21	kworker/u16:3+events_unbound	11:03:44	6
1815614	99	35	33,2	cyclictest	2148134	-21	kworker/u16:4+events_unbound	11:17:33	6
1815614	99	35	33,2	cyclictest	2148134	-21	kworker/u16:4+events_unbound	09:57:33	6
1815614	99	35	33,2	cyclictest	2096662	-21	kworker/u16:2+events_unbound	09:40:49	6
1815614	99	35	32,2	cyclictest	2352726	-21	kworker/u16:1+events_unbound	11:36:03	6
1815619	99	34	33,0	cyclictest	0	-21	swapper/7	11:55:33	7
1815619	99	34	33,0	cyclictest	0	-21	swapper/7	11:29:05	7
1815619	99	34	33,0	cyclictest	0	-21	swapper/7	10:22:09	7
1815614	99	34	32,2	cyclictest	2352726	-21	kworker/u16:1+events_unbound	11:48:53	6
1815614	99	34	32,2	cyclictest	2325056	-21	kworker/u16:3+events_unbound	11:23:44	6
1815614	99	34	32,2	cyclictest	2148134	-21	kworker/u16:4+flush-8:0	11:13:25	6
1815614	99	34	32,2	cyclictest	2144297	-21	kworker/u16:0+flush-8:0	09:54:44	6
1815614	99	34	32,2	cyclictest	2083983	-21	kworker/u16:0+flush-8:0	09:30:41	6
1815614	99	34	32,2	cyclictest	2083983	-21	kworker/u16:0+events_unbound	09:24:24	6
1815614	99	34	31,2	cyclictest	2148134	-21	kworker/u16:4+flush-8:0	11:06:05	6
1815602	99	34	30,3	cyclictest	1896214	-21	kworker/u16:1+flush-8:0	07:57:14	4
1815619	99	33	32,0	cyclictest	0	-21	swapper/7	12:17:25	7
1815619	99	33	32,0	cyclictest	0	-21	swapper/7	12:17:25	7
1815619	99	33	32,0	cyclictest	0	-21	swapper/7	12:09:49	7
1815619	99	33	32,0	cyclictest	0	-21	swapper/7	09:31:49	7
1815619	99	33	32,0	cyclictest	0	-21	swapper/7	09:15:01	7
1815614	99	33	31,2	cyclictest	2482361	-21	kworker/u16:3+flush-8:0	12:24:45	6
1815614	99	33	31,2	cyclictest	2325056	-21	kworker/u16:3+events_unbound	11:52:12	6
1815614	99	33	31,2	cyclictest	2280440	-21	kworker/u16:0+events_unbound	10:43:17	6
1815614	99	33	31,2	cyclictest	2204441	-21	kworker/u16:0+events_unbound	10:31:45	6
1815614	99	33	31,2	cyclictest	2204441	-21	kworker/u16:0+events_unbound	10:09:44	6
1815619	99	32	31,0	cyclictest	0	-21	swapper/7	11:19:05	7
1815619	99	32	31,0	cyclictest	0	-21	swapper/7	09:10:04	7
1815614	99	32	30,2	cyclictest	2148134	-21	kworker/u16:4+flush-8:0	09:48:05	6
1815614	99	32	30,2	cyclictest	2148134	-21	kworker/u16:4+events_unbound	10:38:49	6
1815614	99	32	30,2	cyclictest	2083983	-21	kworker/u16:0+events_unbound	09:17:57	6
1815614	99	32	30,2	cyclictest	1924541	-21	kworker/u16:2+events_unbound	08:41:02	6
1815610	99	32	30,2	cyclictest	2411720	-21	kworker/u16:5+events_unbound	11:36:26	5
1815602	99	32	30,2	cyclictest	2132166	-21	kworker/u16:3+flush-8:0	09:41:28	4
1815619	99	31	30,0	cyclictest	0	-21	swapper/7	11:58:16	7
1815619	99	31	30,0	cyclictest	0	-21	swapper/7	11:15:41	7
1815619	99	31	30,0	cyclictest	0	-21	swapper/7	10:20:17	7
1815619	99	31	30,0	cyclictest	0	-21	swapper/7	10:07:49	7
1815619	99	31	30,0	cyclictest	0	-21	swapper/7	09:25:52	7
1815614	99	31	29,2	cyclictest	2325056	-21	kworker/u16:3+flush-8:0	10:57:53	6
1815614	99	31	29,2	cyclictest	2096662	-21	kworker/u16:2+flush-8:0	09:42:37	6
1815610	99	31	29,2	cyclictest	2352726	-21	kworker/u16:1+flush-8:0	12:26:02	5
1815602	99	31	28,2	cyclictest	2030775	-21	kworker/u16:3+events_unbound	09:26:17	4
1815090	2	31	21,7	sleep6	0	-21	swapper/6	07:02:56	6
1815619	99	30	29,0	cyclictest	0	-21	swapper/7	10:46:56	7
1815619	99	30	28,1	cyclictest	2049906	-21	diskmemload	10:38:00	7
1815619	99	30	24,4	cyclictest	635	-21	systemd-journal	10:31:02	7
1815614	99	30	28,2	cyclictest	2501700	-21	kworker/u16:0+events_unbound	12:20:21	6
1815614	99	30	28,2	cyclictest	2501700	-21	kworker/u16:0+events_unbound	12:20:21	6
1815610	99	30	28,2	cyclictest	2218874	-21	kworker/u16:1+flush-8:0	10:30:57	5
1815610	99	30	28,2	cyclictest	1896214	-21	kworker/u16:1+flush-8:0	07:57:22	5
1838509	2	29	0,1	chrt	1838510	-21	latency_hist	07:16:02	7
1815619	99	29	28,0	cyclictest	0	-21	swapper/7	09:41:53	7
1815619	99	29	28,0	cyclictest	0	-21	swapper/7	07:16:36	7
1815619	99	28	27,0	cyclictest	0	-21	swapper/7	12:13:03	7
1815619	99	28	27,0	cyclictest	0	-21	swapper/7	11:40:46	7
1815619	99	28	26,1	cyclictest	2049906	-21	diskmemload	11:08:22	7
1815619	99	28	26,1	cyclictest	2049906	-21	diskmemload	09:52:42	7
1815614	99	28	26,2	cyclictest	2469910	-21	kworker/u16:2+events_unbound	12:09:06	6
1815614	99	28	25,2	cyclictest	1954140	-21	kworker/u16:0+events_unbound	08:51:04	6
1815610	99	28	24,3	cyclictest	2083983	-21	kworker/u16:0+flush-8:0	09:31:07	5
2085746	2	27	0,1	chrt	2085744	-21	ssh	09:20:22	7
1815619	99	27	26,0	cyclictest	0	-21	swapper/7	07:49:13	7
1815619	99	27	25,1	cyclictest	2109474	-21	ssh	09:29:39	7
1815619	99	27	24,2	cyclictest	2326589	-21	ssh	10:59:38	7
1815614	99	27	25,2	cyclictest	2204441	-21	kworker/u16:0+flush-8:0	10:20:20	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17