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 Wed May 27, 2026 00:44:14)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2032768	2	194	0,5	sleep3	0	-21	swapper/3	19:50:39	3
2093302	2	84	0,4	chrt	0	-21	swapper/1	20:50:49	1
1991053	99	68	57,7	cyclictest	1704890	-21	systemd-journal	19:45:47	0
1991055	99	65	55,7	cyclictest	2082049	-21	latency_hist	20:40:01	1
1991055	99	65	55,7	cyclictest	2082049	-21	latency_hist	20:40:00	1
1991053	99	61	57,3	cyclictest	2076901	-21	kworker/u8:1+events_unbound	23:55:59	0
1991053	99	61	54,5	cyclictest	2017546	-21	kworker/u8:0+flush-8:0	19:41:00	0
1991053	99	59	56,2	cyclictest	2304567	-21	kworker/u8:3+events_unbound	00:30:05	0
1991055	99	58	48,8	cyclictest	2026602	-21	ntpq	19:40:52	1
1991053	99	58	54,3	cyclictest	2131712	-21	kworker/u8:0+events_unbound	23:45:56	0
1991053	99	58	48,8	cyclictest	2186565	-21	/usr/sbin/munin	22:25:59	0
1991055	99	57	50,5	cyclictest	2017546	-21	kworker/u8:0+flush-8:0	19:45:52	1
1991053	99	56	52,3	cyclictest	1971342	-21	kworker/u8:2+events_unbound	21:45:46	0
1991053	99	55	51,3	cyclictest	2190600	-21	kworker/u8:3+events_unbound	22:50:43	0
1991053	99	55	51,3	cyclictest	2076901	-21	kworker/u8:1+events_unbound	23:05:45	0
1991053	99	54	50,3	cyclictest	1971342	-21	kworker/u8:2+events_unbound	20:30:44	0
1991053	99	54	50,3	cyclictest	1971342	-21	kworker/u8:2+events_unbound	19:25:42	0
1991053	99	53	49,3	cyclictest	2076901	-21	kworker/u8:1+events_unbound	23:15:47	0
1991053	99	53	44,7	cyclictest	2265288	-21	latency_hist	23:45:02	0
1991055	99	52	43,6	cyclictest	1704890	-21	systemd-journal	22:50:47	1
1991053	99	52	49,2	cyclictest	2076901	-21	kworker/u8:1+events_unbound	00:25:47	0
1991053	99	51	48,2	cyclictest	1971342	-21	kworker/u8:2+events_unbound	21:40:49	0
1991053	99	51	47,3	cyclictest	1971342	-21	kworker/u8:2+events_unbound	20:50:49	0
1991053	99	51	44,5	cyclictest	1971342	-21	kworker/u8:2+flush-8:0	22:20:53	0
1991053	99	50	47,2	cyclictest	1938639	-21	kworker/u8:3+events_unbound	19:11:04	0
1991053	99	49	45,3	cyclictest	2190600	-21	kworker/u8:3+events_unbound	23:00:58	0
1991053	99	49	45,3	cyclictest	2190600	-21	kworker/u8:3+events_unbound	22:56:03	0
1991053	99	49	45,3	cyclictest	1938639	-21	kworker/u8:3+events_unbound	19:31:03	0
1991053	99	48	45,2	cyclictest	2076901	-21	kworker/u8:1+events_unbound	22:19:48	0
1991053	99	47	44,2	cyclictest	2131712	-21	kworker/u8:0+events_unbound	22:41:01	0
1991053	99	47	40,3	cyclictest	2304567	-21	kworker/u8:3+events_unbound	00:36:48	0
1991053	99	46	43,2	cyclictest	2017546	-21	kworker/u8:0+events_unbound	19:52:49	0
1991053	99	46	42,3	cyclictest	2279669	-21	kworker/u8:2+events_unbound	00:09:49	0
1991053	99	46	42,3	cyclictest	2131712	-21	kworker/u8:0+events_unbound	23:30:57	0
1991053	99	46	41,4	cyclictest	1938639	-21	kworker/u8:3+flush-8:0	21:15:54	0
1991053	99	46	40,2	cyclictest	2279669	-21	kworker/u8:2+events_unbound	00:14:48	0
1991053	99	46	39,5	cyclictest	2017546	-21	kworker/u8:0+events_unbound	20:05:02	0
1991053	99	45	42,2	cyclictest	2076901	-21	kworker/u8:1+events_unbound	21:22:48	0
1991053	99	45	41,3	cyclictest	2131712	-21	kworker/u8:0+events_unbound	22:07:29	0
1991053	99	45	41,3	cyclictest	2131712	-21	kworker/u8:0+events_unbound	22:07:29	0
1991053	99	45	41,3	cyclictest	2131712	-21	kworker/u8:0+events_unbound	21:52:48	0
1991053	99	45	41,3	cyclictest	1938639	-21	kworker/u8:3+events_unbound	21:27:49	0
1991053	99	45	41,3	cyclictest	1938639	-21	kworker/u8:3+events_unbound	20:39:49	0
1991053	99	45	41,3	cyclictest	1938639	-21	kworker/u8:3+events_unbound	20:39:49	0
1991053	99	45	38,5	cyclictest	2006824	-21	ntpq	19:20:54	0
1991053	99	44	41,2	cyclictest	2076901	-21	kworker/u8:1+events_unbound	23:27:43	0
1991053	99	44	40,3	cyclictest	2131712	-21	kworker/u8:0+events_unbound	21:34:48	0
1991053	99	44	40,3	cyclictest	2076901	-21	kworker/u8:1+events_unbound	22:14:48	0
1991053	99	44	40,3	cyclictest	1971342	-21	kworker/u8:2+events_unbound	21:07:49	0
1991053	99	44	40,3	cyclictest	1971342	-21	kworker/u8:2+events_unbound	20:56:06	0
1991053	99	44	40,3	cyclictest	1938639	-21	kworker/u8:3+events_unbound	20:12:10	0
1991055	99	43	33,8	cyclictest	2072422	-21	/usr/sbin/munin	20:30:59	1
1991053	99	43	40,2	cyclictest	2017546	-21	kworker/u8:0+events_unbound	20:17:10	0
1991053	99	43	40,2	cyclictest	1938639	-21	kworker/u8:3+events_unbound	20:22:10	0
1991053	99	43	39,3	cyclictest	2131712	-21	kworker/u8:0+events_unbound	23:21:49	0
1991053	99	43	39,3	cyclictest	2131712	-21	kworker/u8:0+events_unbound	00:18:00	0
1991053	99	43	39,3	cyclictest	2076901	-21	kworker/u8:1+events_unbound	00:01:01	0
1991053	99	43	39,3	cyclictest	1971342	-21	kworker/u8:2+events_unbound	21:57:49	0
1991053	99	43	39,3	cyclictest	1938639	-21	kworker/u8:3+events_unbound	21:03:46	0
1991053	99	43	39,3	cyclictest	1938639	-21	kworker/u8:3+events_unbound	20:27:48	0
1991061	99	42	34,6	cyclictest	1704890	-21	systemd-journal	21:15:47	2
1991055	99	42	26,9	cyclictest	2052688	-21	/usr/sbin/munin	20:11:00	1
1991053	99	42	38,3	cyclictest	2190600	-21	kworker/u8:3+events_unbound	22:46:01	0
1991053	99	42	38,3	cyclictest	2131712	-21	kworker/u8:0+events_unbound	23:36:03	0
1991053	99	42	38,3	cyclictest	2076901	-21	kworker/u8:1+events_unbound	22:31:49	0
1991053	99	42	38,3	cyclictest	1938639	-21	kworker/u8:3+events_unbound	19:56:49	0
1990765	2	42	28,9	sleep1	0	-21	swapper/1	19:08:38	1
1991061	99	41	30,9	cyclictest	2240615	-21	awk	23:20:00	2
1991061	99	41	24,14	cyclictest	2315011	-21	apt-get	00:35:00	2
1991055	99	41	32,7	cyclictest	2146571	-21	/usr/sbin/munin	21:45:58	1
1991053	99	41	37,3	cyclictest	2304567	-21	kworker/u8:3+events_unbound	00:23:47	0
1991053	99	41	37,3	cyclictest	2190600	-21	kworker/u8:3+events_unbound	23:53:54	0
1991053	99	41	37,3	cyclictest	2017546	-21	kworker/u8:0+events_unbound	19:39:49	0
1991053	99	41	37,3	cyclictest	1971342	-21	kworker/u8:2+events_unbound	21:37:22	0
1991053	99	41	37,3	cyclictest	1971342	-21	kworker/u8:2+events_unbound	20:47:49	0
1991053	99	41	37,3	cyclictest	1971342	-21	kworker/u8:2+events_unbound	20:41:48	0
1991053	99	41	37,3	cyclictest	1938639	-21	kworker/u8:3+events_unbound	20:03:48	0
1991061	99	40	21,16	cyclictest	1704890	-21	systemd-journal	21:35:46	2
1991055	99	40	31,7	cyclictest	2111988	-21	/usr/sbin/munin	21:10:53	1
1991055	99	40	31,7	cyclictest	1991225	-21	/usr/sbin/munin	19:10:55	1
1991053	99	40	37,2	cyclictest	2076901	-21	kworker/u8:1+events_unbound	23:14:47	0
1991061	99	39	2,16	cyclictest	2186590	-21	apt-get	22:25:44	2
1991055	99	39	31,6	cyclictest	2226120	-21	apt-get	23:05:40	1
1991053	99	39	35,3	cyclictest	2131712	-21	kworker/u8:0+events_unbound	22:04:28	0
1991053	99	39	35,3	cyclictest	2131712	-21	kworker/u8:0+events_unbound	22:04:27	0
1991053	99	38	34,3	cyclictest	2131712	-21	kworker/u8:0+events_unbound	22:37:06	0
1991053	99	38	34,3	cyclictest	1938639	-21	kworker/u8:3+events_unbound	21:12:39	0
1991061	99	37	1,17	cyclictest	2260655	-21	apt-get	23:40:43	2
1991055	99	37	31,4	cyclictest	2240919	-21	apt-get	23:20:40	1
1991055	99	37	30,5	cyclictest	2047273	-21	latency_hist	20:05:00	1
1991061	99	36	21,13	cyclictest	2122123	-21	cpuspeed_turbos	21:20:43	2
1991061	99	36	20,14	cyclictest	2201141	-21	cron	22:40:01	2
1991055	99	36	28,6	cyclictest	2225830	-21	latency_hist	23:05:00	1
1991055	99	36	28,5	cyclictest	1704890	-21	systemd-journal	21:31:47	1
1991053	99	36	32,3	cyclictest	1938639	-21	kworker/u8:3+events_unbound	19:16:20	0
1991061	99	35	23,10	cyclictest	2018172	-21	fschecks_time	19:35:44	2
1991061	99	35	21,12	cyclictest	2022887	-21	aten2_r5power_c	19:40:42	2
1991055	99	35	29,4	cyclictest	1971342	-21	kworker/u8:2+flush-8:0	20:41:52	1
1991055	99	35	21,7	cyclictest	401	-21	dbus-daemon	00:05:01	1
2043528	2	34	0,2	sleep3	75	-21	kworker/3:1+events	20:00:47	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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