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 50 highest latencies:

System rack0slot2.osadl.org (updated Thu Jun 18, 2026 12:43:29)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1262921	2	58	48,7	sleep4	0	-21	swapper/4	07:07:21	4
1262913	2	54	43,8	sleep5	0	-21	swapper/5	07:07:14	5
1262841	2	54	19,30	sleep7	0	-21	swapper/7	07:06:11	7
1262990	2	40	29,8	sleep6	0	-21	swapper/6	07:08:19	6
1263377	99	35	28,7	cyclictest	1856609	-21	kworker/u16:0+events_unbound	12:27:25	6
1263377	99	34	32,2	cyclictest	1489910	-21	kworker/u16:3+events_unbound	09:39:54	6
1263377	99	33	31,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	10:36:54	6
1263377	99	32	30,2	cyclictest	1773407	-21	kworker/u16:2+events_unbound	11:12:34	6
1263377	99	32	25,6	cyclictest	1394083	-21	kworker/u16:0+events_unbound	09:14:57	6
1263377	99	31	29,2	cyclictest	1634583	-21	kworker/u16:3+flush-8:0	10:32:50	6
1263377	99	31	29,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	11:33:54	6
1263377	99	31	29,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	10:42:30	6
1263377	99	31	29,2	cyclictest	1575398	-21	kworker/u16:0+events_unbound	11:01:43	6
1263377	99	31	29,2	cyclictest	1575398	-21	kworker/u16:0+events_unbound	09:49:58	6
1263377	99	31	29,2	cyclictest	1526620	-21	kworker/u16:6+events_unbound	09:32:09	6
1263377	99	31	29,2	cyclictest	1523060	-21	kworker/u16:2+flush-8:0	09:40:49	6
1263377	99	31	28,2	cyclictest	1856609	-21	kworker/u16:0+events_unbound	11:59:57	6
1263377	99	30	28,2	cyclictest	1897112	-21	kworker/u16:4+flush-8:0	12:20:25	6
1263377	99	30	28,2	cyclictest	1897111	-21	kworker/u16:2+events_unbound	11:56:42	6
1263377	99	30	28,2	cyclictest	1897111	-21	kworker/u16:2+events_unbound	11:56:42	6
1263377	99	30	28,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	10:09:30	6
1263377	99	30	28,2	cyclictest	1575398	-21	kworker/u16:0+events_unbound	10:24:10	6
1263377	99	30	28,2	cyclictest	1575398	-21	kworker/u16:0+events_unbound	10:04:19	6
1263377	99	30	28,2	cyclictest	1526620	-21	kworker/u16:6+events_unbound	09:22:38	6
1263372	99	30	27,2	cyclictest	1301864	-21	kworker/u16:1+flush-8:0	07:35:11	4
1263381	99	29	0,27	cyclictest	1748643	-21	dnf	10:50:01	7
1263377	99	29	27,2	cyclictest	1897111	-21	kworker/u16:2+events_unbound	12:33:34	6
1263377	99	29	27,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	11:46:22	6
1263377	99	29	27,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	11:44:46	6
1263377	99	29	27,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	11:28:31	6
1263377	99	29	27,2	cyclictest	1575399	-21	kworker/u16:1+events_unbound	10:19:05	6
1263377	99	29	27,2	cyclictest	1575398	-21	kworker/u16:0+events_unbound	10:54:58	6
1263377	99	29	27,2	cyclictest	1575398	-21	kworker/u16:0+events_unbound	10:54:02	6
1263374	99	29	26,2	cyclictest	1301864	-21	kworker/u16:1+events_unbound	08:00:10	5
1263377	99	28	26,2	cyclictest	1856609	-21	kworker/u16:0+events_unbound	12:13:30	6
1263377	99	28	26,2	cyclictest	1723682	-21	kworker/u16:4+events_unbound	10:48:59	6
1263377	99	28	26,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	11:39:30	6
1263377	99	28	26,2	cyclictest	1523060	-21	kworker/u16:2+flush-8:0	09:25:54	6
1263377	99	28	25,2	cyclictest	1209647	-21	kworker/u16:0+events_unbound	07:09:58	6
1263377	99	27	25,2	cyclictest	1971299	-21	kworker/u16:1+events_unbound	12:36:26	6
1263377	99	27	25,2	cyclictest	1897111	-21	kworker/u16:2+events_unbound	12:17:50	6
1263377	99	27	25,2	cyclictest	1810565	-21	kworker/u16:4+events_unbound	11:16:18	6
1263377	99	27	25,2	cyclictest	1773407	-21	kworker/u16:2+flush-8:0	11:22:50	6
1263377	99	27	25,2	cyclictest	1773407	-21	kworker/u16:2+events_unbound	11:08:55	6
1263377	99	27	25,2	cyclictest	1634583	-21	kworker/u16:3+events_unbound	11:53:46	6
1263372	99	27	25,2	cyclictest	1526620	-21	kworker/u16:6+flush-8:0	09:39:55	4
1263377	99	26	24,2	cyclictest	1897112	-21	kworker/u16:4+events_unbound	12:07:11	6
1263374	99	26	23,2	cyclictest	1856609	-21	kworker/u16:0+flush-8:0	11:50:13	5
1263377	99	25	23,2	cyclictest	1575399	-21	kworker/u16:1+events_unbound	09:48:26	6
1263377	99	25	23,2	cyclictest	1523060	-21	kworker/u16:2+events_unbound	09:57:35	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