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 #3, slot #4

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, lowest P state: performance

Characteristics of the 50 highest latencies:

System rack3slot4.osadl.org (updated Fri Jun 13, 2025 12:46:44)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1844088	2	3442	3415,8	sleep2	1839070	-21	kworker/2:1+events@ dbs_work_handler	07:05:20	2
1844503	2	2313	2288,16	sleep4	0	-21	swapper/4	07:05:27	4
1845634	99	143	115,10	cyclictest	2078251	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:06:56	1
1845634	99	133	119,7	cyclictest	1855362	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	07:39:53	1
1845634	99	128	100,9	cyclictest	1889820	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	09:15:10	1
1845653	99	119	113,2	cyclictest	0	-21	swapper/5	07:14:52	5
1845634	99	113	98,8	cyclictest	2078251	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:46:54	1
1845639	99	112	97,8	cyclictest	1898748	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:15:23	2
1845630	99	108	83,6	cyclictest	2103202	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	12:21:58	0
1845630	99	108	83,6	cyclictest	2103202	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	12:21:58	0
1845639	99	107	94,6	cyclictest	1859344	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:54:58	2
1845639	99	106	85,9	cyclictest	2009106	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:11:47	2
1845639	99	104	90,7	cyclictest	1849446	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:29:52	2
2047547	2	99	0,16	sleep0	13	-21	ksoftirqd/0	11:23:40	0
1845639	99	95	81,7	cyclictest	1853339	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	07:49:57	2
1845644	99	94	80,7	cyclictest	1879463	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	08:40:07	3
1845649	99	93	86,3	cyclictest	0	-21	swapper/4	10:26:40	4
1845653	99	89	82,3	cyclictest	0	-21	swapper/5	10:26:40	5
1845630	99	89	2,41	cyclictest	2139719	-21	ssh	12:33:54	0
1845634	99	87	77,7	cyclictest	210	-21	kswapd0	10:10:21	1
1845634	99	87	77,7	cyclictest	210	-21	kswapd0	10:10:21	1
1845653	99	86	69,11	cyclictest	2121776	-21	chrt	12:20:19	5
1845653	99	86	69,11	cyclictest	2121776	-21	chrt	12:20:19	5
1845630	99	85	37,36	cyclictest	642	50	irq/527-eth0-Tx	07:30:37	0
1845630	99	85	1,3	cyclictest	0	-21	swapper/0	11:55:35	0
1845630	99	84	68,7	cyclictest	1971166	-21	kworker/u12:5+events_unbound@ flush_memcg_stats_dwork	10:21:04	0
1845653	99	83	76,3	cyclictest	0	-21	swapper/5	12:31:58	5
1845634	99	83	68,8	cyclictest	1898748	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:21:53	1
1845630	99	82	27,11	cyclictest	1895230	-21	grep	09:10:41	0
1845630	99	82	27,11	cyclictest	1895230	-21	grep	09:10:41	0
1845630	99	82	1,53	cyclictest	0	-21	swapper/0	07:44:45	0
1845630	99	82	1,53	cyclictest	0	-21	swapper/0	07:44:45	0
1845634	99	81	68,6	cyclictest	2009106	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:06:45	1
1845630	99	81	66,8	cyclictest	2085924	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:00:24	0
1845630	99	81	66,8	cyclictest	2085924	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:00:23	0
1845639	99	79	64,7	cyclictest	1898748	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:40:16	2
1845630	99	79	21,3	cyclictest	0	-21	swapper/0	09:51:46	0
1845653	99	78	71,3	cyclictest	0	-21	swapper/5	10:55:48	5
1845639	99	78	63,7	cyclictest	1994467	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:56:46	2
1845639	99	78	62,8	cyclictest	2035751	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:31:52	2
1845639	99	78	62,8	cyclictest	2035751	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:31:51	2
1845634	99	78	65,7	cyclictest	1865275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:41:57	1
1845630	99	78	35,6	cyclictest	642	50	irq/527-eth0-Tx	11:25:25	0
1845634	99	77	65,6	cyclictest	2061403	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:51:55	1
1845634	99	77	65,6	cyclictest	2061403	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:51:54	1
1845630	99	77	8,5	cyclictest	645	50	irq/530-eth0-Tx	10:35:23	0
1845630	99	77	40,5	cyclictest	642	50	irq/527-eth0-Tx	11:00:37	0
1845630	99	77	1,4	cyclictest	142	50	irq/98-imx_mu_c	10:09:16	0
1845653	99	76	70,3	cyclictest	0	-21	swapper/5	08:55:39	5
1845653	99	76	70,3	cyclictest	0	-21	swapper/5	08:55:39	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