OSADL QA Farm on Real-time of Mainline Linux

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

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.
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 100 highest latencies:

System rackeslot5s.osadl.org (updated Thu Jan 01, 2026 00:44:22)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
29464	99	25	0,24	cyclictest	3122	-21	cron	21:35:01	1
29471	99	23	20,2	cyclictest	7947	-21	awk	21:45:00	3
29471	99	23	20,2	cyclictest	7137	-21	sleep	00:00:01	3
29469	99	23	22,1	cyclictest	0	-21	swapper/2	00:05:51	2
29469	99	23	0,2	cyclictest	30760	-21	perf	21:25:01	2
29469	99	23	0,22	cyclictest	605	-21	avahi-daemon	00:00:01	2
29464	99	23	20,2	cyclictest	23862	-21	cron	20:05:01	1
29464	99	23	0,22	cyclictest	21969	-21	apt-get	23:20:49	1
29461	99	23	0,22	cyclictest	622	-21	gdbus	20:30:01	0
29471	99	22	22,0	cyclictest	0	-21	swapper/3	23:25:51	3
29471	99	22	20,1	cyclictest	17003	-21	apt	19:50:50	3
29471	99	22	20,1	cyclictest	15212	-21	munin-plugin-st	22:00:00	3
29471	99	22	20,1	cyclictest	0	-21	swapper/3	20:25:00	3
29471	99	22	19,2	cyclictest	11430	-21	apt-get	19:40:01	3
29471	99	22	0,1	cyclictest	29758	-21	apt-get	19:10:51	3
29469	99	22	21,1	cyclictest	17159	-21	apt-get	23:10:50	2
29469	99	22	20,1	cyclictest	4415	-21	munin-run	22:45:00	2
29469	99	22	20,1	cyclictest	25916	-21	sh	21:15:00	2
29469	99	22	0,21	cyclictest	6202	-21	apt-get	20:35:51	2
29469	99	22	0,21	cyclictest	24821	-21	awk	22:20:01	2
29469	99	22	0,21	cyclictest	1811	-21	dump-pmu-power	19:20:00	2
29469	99	22	0,21	cyclictest	0	-21	swapper/2	23:30:00	2
29469	99	22	0,21	cyclictest	0	-21	swapper/2	20:15:50	2
29464	99	22	22,0	cyclictest	14764	-21	apt-get	23:05:51	1
29464	99	22	21,1	cyclictest	0	-21	swapper/1	22:35:01	1
29464	99	22	20,1	cyclictest	9016	-21	apt-get	20:40:50	1
29464	99	22	0,21	cyclictest	11447	-21	grep	19:40:01	1
29464	99	22	0,21	cyclictest	0	-21	swapper/1	22:45:51	1
29464	99	22	0,21	cyclictest	0	-21	swapper/1	22:35:50	1
29464	99	22	0,21	cyclictest	0	-21	swapper/1	22:10:49	1
29464	99	22	0,1	cyclictest	2015	-21	apt-get	23:45:52	1
29464	99	22	0,1	cyclictest	0	-21	swapper/1	22:50:02	1
29464	99	22	0,0	cyclictest	0	-21	swapper/1	00:10:51	1
29461	99	22	22,0	cyclictest	0	-21	swapper/0	22:56:06	0
29461	99	22	20,1	cyclictest	313	-21	systemd-journal	21:25:01	0
29461	99	22	20,1	cyclictest	0	-21	swapper/0	23:15:01	0
29461	99	22	20,1	cyclictest	0	-21	swapper/0	19:15:01	0
29461	99	22	0,21	cyclictest	27200	-21	sh	22:25:01	0
29461	99	22	0,21	cyclictest	21140	-21	grep	21:05:00	0
29461	99	22	0,21	cyclictest	16677	-21	basename	19:50:01	0
29461	99	22	0,21	cyclictest	1292	-21	munin-run	23:45:01	0
29461	99	22	0,21	cyclictest	0	-21	swapper/0	22:40:00	0
29461	99	22	0,21	cyclictest	0	-21	swapper/0	21:35:48	0
29461	99	22	0,21	cyclictest	0	-21	swapper/0	20:45:51	0
29461	99	22	0,21	cyclictest	0	-21	swapper/0	20:40:51	0
29471	99	21	21,0	cyclictest	17918	-21	apt-get	22:05:51	3
29471	99	21	21,0	cyclictest	0	-21	swapper/3	19:50:01	3
29471	99	21	19,1	cyclictest	31309	-21	dump-pmu-power	23:40:00	3
29471	99	21	19,1	cyclictest	28690	-21	munin-run	20:15:00	3
29471	99	21	0,21	cyclictest	0	-21	swapper/3	22:30:52	3
29471	99	21	0,20	cyclictest	28667	-21	apt-get	21:20:51	3
29471	99	21	0,20	cyclictest	2326	-21	apt-get	22:40:50	3
29471	99	21	0,20	cyclictest	22741	-21	apt-get	00:30:50	3
29471	99	21	0,20	cyclictest	0	-21	swapper/3	21:00:53	3
29471	99	21	0,20	cyclictest	0	-21	swapper/3	00:25:51	3
29471	99	21	0,0	cyclictest	21816	-21	apt-get	20:00:50	3
29471	99	21	0,0	cyclictest	0	-21	swapper/3	00:05:51	3
29469	99	21	21,0	cyclictest	26604	-21	apt-get	20:10:51	2
29469	99	21	20,1	cyclictest	3808	-21	apt-get	20:30:50	2
29469	99	21	20,0	cyclictest	0	-21	swapper/2	23:00:53	2
29469	99	21	19,1	cyclictest	9579	-21	dump-pmu-power	22:55:01	2
29469	99	21	0,20	cyclictest	0	-21	swapper/2	22:20:50	2
29469	99	21	0,20	cyclictest	0	-21	swapper/2	21:05:52	2
29469	99	21	0,20	cyclictest	0	-21	swapper/2	19:55:53	2
29469	99	21	0,20	cyclictest	0	-21	swapper/2	19:35:00	2
29469	99	21	0,0	cyclictest	0	-21	swapper/2	22:05:51	2
29464	99	21	21,0	cyclictest	6952	-21	apt-get	19:30:50	1
29464	99	21	21,0	cyclictest	0	-21	swapper/1	19:55:53	1
29464	99	21	20,1	cyclictest	31429	-21	apt-get	20:20:52	1
29464	99	21	20,1	cyclictest	14612	-21	apt-get	19:45:52	1
29464	99	21	20,1	cyclictest	0	-21	swapper/1	20:50:51	1
29464	99	21	20,1	cyclictest	0	-21	swapper/1	20:05:50	1
29464	99	21	20,0	cyclictest	25134	-21	apt-get	00:35:51	1
29464	99	21	19,1	cyclictest	7158	-21	idleruntime-cro	00:00:01	1
29464	99	21	19,1	cyclictest	0	-21	swapper/1	22:05:00	1
29464	99	21	19,1	cyclictest	0	-21	swapper/1	20:50:01	1
29464	99	21	18,2	cyclictest	29611	-21	perf	22:30:01	1
29464	99	21	0,21	cyclictest	0	-21	swapper/1	23:40:49	1
29464	99	21	0,20	cyclictest	5551	-21	perf	21:40:01	1
29464	99	21	0,20	cyclictest	0	-21	swapper/1	22:20:50	1
29464	99	21	0,1	cyclictest	29159	-21	apt-get	23:35:52	1
29464	99	21	0,0	cyclictest	0	-21	swapper/1	22:05:51	1
29464	99	21	0,0	cyclictest	0	-21	swapper/1	21:50:50	1
29461	99	21	21,0	cyclictest	0	-21	swapper/0	23:00:53	0
29461	99	21	20,0	cyclictest	24364	-21	apt-get	23:25:51	0
29461	99	21	20,0	cyclictest	22400	-21	munin-run	22:15:01	0
29461	99	21	19,1	cyclictest	5049	-21	apt-get	23:55:48	0
29461	99	21	0,20	cyclictest	26762	-21	apt-get	23:30:50	0
29461	99	21	0,20	cyclictest	0	-21	swapper/0	23:35:52	0
29461	99	21	0,20	cyclictest	0	-21	swapper/0	22:45:51	0
29461	99	21	0,20	cyclictest	0	-21	swapper/0	22:05:51	0
29461	99	21	0,20	cyclictest	0	-21	swapper/0	19:20:53	0
29461	99	21	0,1	cyclictest	11430	-21	apt-get	19:40:02	0
29461	99	21	0,0	cyclictest	0	-21	swapper/0	20:05:51	0
29471	99	20	20,0	cyclictest	0	-21	swapper/3	23:30:50	3
29471	99	20	20,0	cyclictest	0	-21	swapper/3	22:56:06	3
29471	99	20	20,0	cyclictest	0	-21	swapper/3	21:05:52	3
29471	99	20	20,0	cyclictest	0	-21	swapper/3	00:35:51	3
29471	99	20	20,0	cyclictest	0	-21	swapper/3	00:15:51	3
29471	99	20	19,1	cyclictest	0	-21	swapper/3	21:25:51	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2020-09-17 - 11:29