OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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: ondemand
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack5slot4s.osadl.org (updated Thu Aug 13, 2026 00:44:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2214102	2	62	0,3	sleep0	20	1	rcuc/0	22:22:48	0
2282762	2	61	0,2	sleep3	47	1	rcuc/3	23:32:45	3
2021569	99	61	51,7	cyclictest	2342020	-21	latency_hist	00:30:00	0
2021569	99	56	52,3	cyclictest	2276751	-21	kworker/u8:3+events_unbound	23:42:59	0
2021569	99	56	45,4	cyclictest	2002214	-21	kworker/u8:1+events_unbound	19:43:01	0
2021613	2	55	0,3	chrt	0	-21	swapper/1	19:10:01	1
2021569	99	55	51,3	cyclictest	2257075	-21	kworker/u8:1+events_unbound	23:28:00	0
2021569	99	54	50,3	cyclictest	2202377	-21	kworker/u8:3+events_unbound	22:48:00	0
2021569	99	54	50,3	cyclictest	2202377	-21	kworker/u8:3+events_unbound	22:48:00	0
2021569	99	54	46,6	cyclictest	2351941	-21	latency_hist	00:40:01	0
2298391	2	52	0,4	chrt	0	-21	swapper/3	23:47:50	3
2021569	99	52	42,3	cyclictest	2257075	-21	kworker/u8:1+events_unbound	23:37:46	0
2021569	99	50	46,3	cyclictest	2296798	-21	kworker/u8:2+events_unbound	23:52:58	0
2021569	99	50	46,3	cyclictest	2296798	-21	kworker/u8:2+events_unbound	23:48:02	0
2021569	99	50	46,3	cyclictest	2016518	-21	kworker/u8:2+events_unbound	19:22:59	0
2021569	99	50	45,4	cyclictest	2016518	-21	kworker/u8:2+events_unbound	19:17:45	0
2215112	2	49	0,4	chrt	0	-21	swapper/1	22:22:49	1
2021574	99	49	40,7	cyclictest	2276217	-21	ntpq	23:22:56	1
2021569	99	49	45,3	cyclictest	2242532	-21	kworker/u8:2+events_unbound	22:56:00	0
2021569	99	49	45,3	cyclictest	2073099	-21	kworker/u8:2+events_unbound	20:12:33	0
2021569	99	48	44,3	cyclictest	2257075	-21	kworker/u8:1+events_unbound	00:13:04	0
2021569	99	48	43,4	cyclictest	2276751	-21	kworker/u8:3+events_unbound	00:00:01	0
2021569	99	47	43,3	cyclictest	2242532	-21	kworker/u8:2+events_unbound	23:31:00	0
2021569	99	47	43,3	cyclictest	2073099	-21	kworker/u8:2+events_unbound	20:23:00	0
2021569	99	47	43,3	cyclictest	2073099	-21	kworker/u8:2+events_unbound	20:16:21	0
2021569	99	47	42,3	cyclictest	2317489	-21	kworker/u8:2+events_unbound	00:07:51	0
2021569	99	46	42,3	cyclictest	677580	-21	kworker/u8:4+events_unbound	20:31:23	0
2021569	99	46	42,3	cyclictest	2317489	-21	kworker/u8:2+events_unbound	00:23:55	0
2021569	99	46	37,4	cyclictest	677580	-21	kworker/u8:4+events_unbound	20:06:16	0
2021574	99	45	36,6	cyclictest	2287447	-21	/usr/sbin/munin	23:37:54	1
2021569	99	45	41,3	cyclictest	2202377	-21	kworker/u8:3+events_unbound	22:40:00	0
2021569	99	45	41,3	cyclictest	2187653	-21	kworker/u8:1+flush-8:0	21:59:59	0
2021569	99	45	41,3	cyclictest	2142055	-21	kworker/u8:1+events_unbound	21:38:59	0
2021569	99	45	41,3	cyclictest	2113144	-21	kworker/u8:0+events_unbound	21:06:46	0
2021578	99	44	37,5	cyclictest	275	-21	systemd-journal	20:15:00	2
2021574	99	44	35,7	cyclictest	2033279	-21	latency_hist	19:20:01	1
2021574	99	44	34,8	cyclictest	2211517	-21	ntpq	22:17:53	1
2021574	99	44	34,7	cyclictest	275	-21	systemd-journal	21:42:52	1
2021569	99	44	40,3	cyclictest	2257075	-21	kworker/u8:1+events_unbound	00:19:54	0
2021569	99	44	40,3	cyclictest	2142055	-21	kworker/u8:1+flush-8:0	21:23:02	0
2021569	99	44	40,3	cyclictest	2073099	-21	kworker/u8:2+events_unbound	21:04:46	0
2021569	99	44	37,3	cyclictest	2257075	-21	kworker/u8:1+events_unbound	00:02:46	0
2021569	99	44	35,7	cyclictest	2072847	-21	latency_hist	20:00:01	0
2021574	99	43	35,6	cyclictest	2043599	-21	/usr/sbin/munin	19:33:00	1
2021569	99	43	39,3	cyclictest	677580	-21	kworker/u8:4+events_unbound	20:46:25	0
2021569	99	43	39,3	cyclictest	2257075	-21	kworker/u8:1+events_unbound	23:19:00	0
2021569	99	43	39,3	cyclictest	2187653	-21	kworker/u8:1+events_unbound	22:12:45	0
2021569	99	43	39,3	cyclictest	2113144	-21	kworker/u8:0+events_unbound	21:45:08	0
2021569	99	43	38,4	cyclictest	2182251	-21	kworker/u8:2+events_unbound	22:02:56	0
2021569	99	43	35,3	cyclictest	2182251	-21	kworker/u8:2+events_unbound	22:07:45	0
2021569	99	42	39,2	cyclictest	2002214	-21	kworker/u8:1+events_unbound	19:37:46	0
2021569	99	42	38,3	cyclictest	2113144	-21	kworker/u8:0+events_unbound	20:58:02	0
2021569	99	42	37,4	cyclictest	2336904	-21	kworker/u8:3+events_unbound	00:32:45	0
2021569	99	42	36,2	cyclictest	2058265	-21	kworker/u8:2+events_unbound	19:52:49	0
2021574	99	41	32,7	cyclictest	2093107	-21	apt-get	20:22:42	1
2021574	99	41	32,6	cyclictest	2307486	-21	/usr/sbin/munin	23:57:52	1
2021569	99	41	37,3	cyclictest	677580	-21	kworker/u8:4+events_unbound	19:25:17	0
2021569	99	41	37,3	cyclictest	2113144	-21	kworker/u8:0+events_unbound	21:17:49	0
2021569	99	41	34,3	cyclictest	2216538	-21	kworker/u8:0+events_unbound	22:42:47	0
2021574	99	40	35,4	cyclictest	2336904	-21	kworker/u8:3+events_unbound	00:35:58	1
2021574	99	40	31,7	cyclictest	2113336	-21	/usr/sbin/munin	20:42:55	1
2021569	99	40	36,3	cyclictest	677580	-21	kworker/u8:4+events_unbound	20:29:22	0
2021569	99	40	36,3	cyclictest	2113144	-21	kworker/u8:0+events_unbound	21:43:20	0
2021569	99	40	30,8	cyclictest	2277012	-21	cp	23:25:01	0
2021569	99	39	35,3	cyclictest	2216538	-21	kworker/u8:0+events_unbound	23:01:00	0
2021569	99	39	35,3	cyclictest	2113144	-21	kworker/u8:0+events_unbound	20:42:23	0
2021569	99	39	35,3	cyclictest	2073099	-21	kworker/u8:2+events_unbound	21:25:56	0
2021569	99	39	35,3	cyclictest	2073099	-21	kworker/u8:2+events_unbound	21:11:45	0
2021569	99	39	32,3	cyclictest	677580	-21	kworker/u8:4+events_unbound	19:47:59	0
2021574	99	38	28,7	cyclictest	2086999	-21	ntpq	20:12:56	1
2021574	99	38	11,14	cyclictest	573	-21	runrttasks	00:17:43	1
2021569	99	38	35,2	cyclictest	2073099	-21	kworker/u8:2+events_unbound	20:35:03	0
2021569	99	38	34,3	cyclictest	2073099	-21	kworker/u8:2+events_unbound	20:02:33	0
2021569	99	38	34,3	cyclictest	2016518	-21	kworker/u8:2+events_unbound	19:10:25	0
2021569	99	38	31,5	cyclictest	2167336	-21	latency_hist	21:35:01	0
2021569	99	38	31,3	cyclictest	2182251	-21	kworker/u8:2+events_unbound	22:27:45	0
2021574	99	37	31,4	cyclictest	2282536	-21	apt-get	23:32:42	1
2021569	99	37	33,3	cyclictest	2202377	-21	kworker/u8:3+events_unbound	22:15:59	0
2021569	99	37	33,3	cyclictest	2002214	-21	kworker/u8:1+events_unbound	19:31:09	0
2021574	99	36	28,6	cyclictest	2072093	-21	ntpq	19:57:54	1
2021574	99	36	27,6	cyclictest	2271940	-21	latency_hist	23:20:01	1
2021574	99	36	27,6	cyclictest	2192287	-21	latency_hist	22:00:01	1
2021574	99	36	23,9	cyclictest	275	-21	systemd-journal	22:48:04	1
2021574	99	36	23,9	cyclictest	275	-21	systemd-journal	22:48:04	1
2021569	99	36	32,3	cyclictest	677580	-21	kworker/u8:4+events_unbound	20:52:41	0
2021569	99	36	32,3	cyclictest	2257075	-21	kworker/u8:1+events_unbound	23:14:01	0
2021569	99	36	32,3	cyclictest	2202377	-21	kworker/u8:3+flush-8:0	22:31:59	0
2021574	99	35	32,2	cyclictest	2321430	-21	needreboot	00:07:54	1
2021574	99	35	28,5	cyclictest	2053536	-21	apt-get	19:42:41	1
2021569	99	35	32,2	cyclictest	2242532	-21	kworker/u8:2+events_unbound	22:53:59	0
2021569	99	35	31,3	cyclictest	2257075	-21	kworker/u8:1+events_unbound	23:06:06	0
2021569	99	35	31,3	cyclictest	2113144	-21	kworker/u8:0+events_unbound	21:52:47	0
2021578	99	34	27,5	cyclictest	2277344	-21	base64	23:25:01	2
2021574	99	33	28,3	cyclictest	2232141	-21	unixbench_singl	22:38:01	1
2021574	99	33	28,3	cyclictest	2167332	-21	cron	21:35:00	1
2021574	99	33	27,4	cyclictest	2058704	-21	cpuspeed_turbos	19:47:45	1
2021574	99	33	23,8	cyclictest	2226625	-21	ntpq	22:32:54	1
2021574	99	32	25,5	cyclictest	412	-21	smartd	20:07:17	1
2021574	99	32	25,5	cyclictest	2098300	-21	apt-get	20:27:42	1
2021574	99	32	25,5	cyclictest	2042404	-21	ntpq	19:27:53	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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