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 Sat May 30, 2026 12:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
366025	2	62	51,7	sleep4	0	-21	swapper/4	07:03:52	4
366549	99	60	59,0	cyclictest	0	-21	swapper/7	07:07:29	7
1108101	2	54	0,0	sleep7	1108100	-21	rm	12:36:19	7
366549	99	47	43,3	cyclictest	827	-21	dbus-daemon	08:26:58	7
366235	2	47	36,8	sleep5	0	-21	swapper/5	07:06:50	5
366549	99	41	36,4	cyclictest	987518	-21	latency_hist	11:46:57	7
366545	99	40	37,2	cyclictest	3579423	-21	kworker/u16:0+flush-8:0	07:12:14	6
365952	2	40	5,30	sleep7	0	-21	swapper/7	07:02:51	7
366549	99	38	32,5	cyclictest	485261	-21	latency_hist	08:06:59	7
366541	99	38	36,2	cyclictest	698435	-21	kworker/u16:3+events_unbound	11:07:12	5
366549	99	36	33,2	cyclictest	634134	-21	ssh	09:17:32	7
366541	99	36	34,2	cyclictest	684959	-21	kworker/u16:0+events_unbound	09:42:13	5
366549	99	35	33,1	cyclictest	0	-21	swapper/7	07:11:59	7
366545	99	35	33,2	cyclictest	963209	-21	kworker/u16:0+events_unbound	11:37:29	6
366549	99	34	32,1	cyclictest	0	-21	swapper/7	07:32:12	7
366549	99	34	29,4	cyclictest	878579	-21	latency_hist	11:01:58	7
366549	99	31	30,0	cyclictest	0	-21	swapper/7	10:30:53	7
366549	99	31	28,2	cyclictest	719185	-21	sh	09:53:08	7
366545	99	31	30,1	cyclictest	817535	-21	kworker/u16:1+events_unbound	11:00:29	6
366541	99	31	29,2	cyclictest	571597	-21	kworker/u16:0+events_unbound	09:22:21	5
366549	99	30	29,0	cyclictest	0	-21	swapper/7	11:37:00	7
366545	99	30	27,2	cyclictest	504842	-21	kworker/u16:5+events_unbound	08:32:10	6
366541	99	30	28,2	cyclictest	698435	-21	kworker/u16:3+flush-8:0	10:06:53	5
366545	99	29	27,2	cyclictest	937753	-21	kworker/u16:3+events_unbound	11:26:58	6
366545	99	29	26,2	cyclictest	937753	-21	kworker/u16:3+events_unbound	11:32:01	6
366536	99	29	28,1	cyclictest	3579423	-21	kworker/u16:0+flush-8:0	07:11:59	4
927093	2	28	0,1	chrt	927090	-21	awk	11:21:57	7
755237	2	28	0,1	chrt	755238	-21	sh	10:07:36	7
366545	99	28	26,2	cyclictest	504842	-21	kworker/u16:5+flush-8:0	08:42:29	6
366541	99	28	26,2	cyclictest	937753	-21	kworker/u16:3+events_unbound	12:32:19	5
366541	99	28	26,2	cyclictest	504842	-21	kworker/u16:5+events_unbound	09:07:14	5
851534	2	27	0,1	chrt	0	-21	swapper/6	10:47:26	6
366549	99	27	26,0	cyclictest	0	-21	swapper/7	12:07:00	7
366549	99	27	26,0	cyclictest	0	-21	swapper/7	10:41:52	7
366549	99	27	22,4	cyclictest	890708	-21	latency_hist	11:06:58	7
366545	99	27	25,2	cyclictest	3827495	-21	kworker/u16:3+flush-8:0	08:01:54	6
366541	99	27	25,2	cyclictest	363014	-21	kworker/u16:1+events_unbound	07:12:24	5
366536	99	27	24,2	cyclictest	648724	-21	kworker/u16:1+flush-8:0	09:42:29	4
366541	99	26	24,2	cyclictest	937753	-21	kworker/u16:3+events_unbound	12:31:57	5
366541	99	26	24,2	cyclictest	571597	-21	kworker/u16:0+events_unbound	08:52:23	5
366536	99	26	24,2	cyclictest	914971	-21	kworker/u16:2+events_unbound	12:07:25	4
366536	99	26	22,3	cyclictest	817535	-21	kworker/u16:1+flush-8:0	10:37:19	4
366536	99	26	21,4	cyclictest	876352	-21	packagekitd	10:58:09	4
366541	99	25	23,2	cyclictest	914971	-21	kworker/u16:2+events_unbound	11:42:17	5
366541	99	25	23,2	cyclictest	698435	-21	kworker/u16:3+events_unbound	10:43:29	5
366541	99	25	23,2	cyclictest	684959	-21	kworker/u16:0+events_unbound	10:55:25	5
366541	99	25	23,2	cyclictest	589629	-21	kworker/u16:2+events_unbound	09:57:14	5
366541	99	25	23,2	cyclictest	589629	-21	kworker/u16:2+events_unbound	09:15:21	5
366541	99	24	22,2	cyclictest	937753	-21	kworker/u16:3+events_unbound	11:47:24	5
366541	99	24	22,2	cyclictest	937753	-21	kworker/u16:3+events_unbound	11:28:40	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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