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2026-05-15 - 11:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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 
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Fri May 15, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
109762118106,6sleep30-21swapper/319:09:533
10933211593,16sleep00-21swapper/019:09:190
10829211496,12sleep10-21swapper/119:08:001
10851210594,6sleep20-21swapper/219:08:172
7902750,0sleep20-21swapper/220:05:002
272382750,1sleep337-21rcuc/323:31:293
56772700,0sleep30-21swapper/321:21:533
36112700,0sleep00-21swapper/021:20:140
11016993833,1cyclictest0-21swapper/222:55:122
1101499240,2cyclictest0-21swapper/022:25:060
281712220,0sleep00-21swapper/021:47:070
1101499220,3cyclictest4467-21ssh22:31:270
1101499220,3cyclictest13905-21ssh22:06:190
1101499220,3cyclictest10264-21ssh23:48:590
1101499220,3cyclictest0-21swapper/023:32:150
1101499220,2cyclictest0-21swapper/020:15:190
1101499220,12cyclictest0-21swapper/022:49:500
1101699210,19cyclictest0-21swapper/221:45:122
1101699210,19cyclictest0-21swapper/219:40:122
1101499219,10cyclictest24250-21sh23:29:060
1101499211,18cyclictest25944-21diskmemload23:16:010
11014992110,9cyclictest6494-21expr00:20:130
1101499210,3cyclictest4151-21ssh23:06:310
1101499210,3cyclictest27873-21ssh22:57:310
1101499210,3cyclictest0-21swapper/023:24:030
1101499210,3cyclictest0-21swapper/022:35:580
1101499210,3cyclictest0-21swapper/021:55:430
1101499210,2cyclictest0-21swapper/023:51:540
1101499210,2cyclictest0-21swapper/023:36:160
1101499210,2cyclictest0-21swapper/023:03:420
1101499210,2cyclictest0-21swapper/022:51:020
1101499210,2cyclictest0-21swapper/022:44:470
1101499210,2cyclictest0-21swapper/021:31:550
1101499210,2cyclictest0-21swapper/000:16:340
136142200,1sleep229-21rcuc/222:41:222
1101799200,16cyclictest0-21swapper/322:49:543
1101699200,18cyclictest0-21swapper/221:05:112
1101499200,3cyclictest28700-21unixbench_multi19:51:030
1101499200,2cyclictest25944-21diskmemload23:55:470
1101499200,2cyclictest23898-21smartctl19:40:150
1101499200,2cyclictest0-21swapper/023:41:580
1101499200,2cyclictest0-21swapper/023:12:470
1101499200,2cyclictest0-21swapper/022:23:510
1101499200,2cyclictest0-21swapper/022:15:590
1101499200,2cyclictest0-21swapper/022:10:170
1101499200,2cyclictest0-21swapper/022:02:580
1101499200,2cyclictest0-21swapper/021:50:190
1101499200,2cyclictest0-21swapper/021:40:110
1101499200,2cyclictest0-21swapper/021:35:180
1101499200,2cyclictest0-21swapper/021:27:390
1101499200,2cyclictest0-21swapper/021:16:110
1101499200,2cyclictest0-21swapper/021:11:030
1101499200,2cyclictest0-21swapper/021:11:020
1101499200,2cyclictest0-21swapper/020:45:150
1101499200,2cyclictest0-21swapper/000:35:430
1101499200,2cyclictest0-21swapper/000:30:460
1101499200,2cyclictest0-21swapper/000:25:230
1101499200,2cyclictest0-21swapper/000:10:190
1101499200,2cyclictest0-21swapper/000:06:140
1101499200,2cyclictest0-21swapper/000:01:150
31642190,0sleep10-21swapper/123:05:381
113312190,0sleep30-21swapper/323:50:123
11015991912,5cyclictest0-21swapper/123:42:301
1101499190,2cyclictest6671-21apt-get20:20:070
1101499190,2cyclictest32402-21pzem_power20:00:380
1101499190,2cyclictest0-21swapper/021:05:590
1101499190,2cyclictest0-21swapper/021:00:140
1101499190,2cyclictest0-21swapper/020:50:140
1101499190,2cyclictest0-21swapper/020:40:110
1101499190,2cyclictest0-21swapper/020:10:110
1101499190,2cyclictest0-21swapper/019:55:150
1101499190,2cyclictest0-21swapper/019:35:140
1101499190,2cyclictest0-21swapper/019:15:110
1101499190,2cyclictest0-21swapper/019:11:020
11017991811,5cyclictest0-21swapper/322:30:123
1101599180,16cyclictest0-21swapper/123:10:141
1101499182,13cyclictest0-21swapper/019:30:020
1101499180,2cyclictest0-21swapper/020:59:550
1101499180,2cyclictest0-21swapper/020:38:590
1101499180,2cyclictest0-21swapper/020:25:140
1101499180,2cyclictest0-21swapper/020:05:190
1101499180,2cyclictest0-21swapper/019:25:100
1101499180,2cyclictest0-21swapper/019:20:110
1101499180,1cyclictest0-21swapper/020:30:110
11017991712,3cyclictest12098-21turbostat21:30:013
11016991714,2cyclictest25668-21kworker/u8:021:57:042
11016991714,2cyclictest22452-21kworker/u8:221:34:042
11015991714,2cyclictest7286-21kworker/u8:200:23:051
11015991714,2cyclictest25668-21kworker/u8:021:52:051
1101499170,2cyclictest0-21swapper/019:45:030
1101799161,5cyclictest4562-21gdm-simple-gree20:53:593
11016991613,2cyclictest25260-21kworker/u8:223:58:062
11016991613,2cyclictest22452-21kworker/u8:221:39:052
11016991613,2cyclictest19556-21kworker/u8:023:30:052
1101699161,2cyclictest0-21swapper/222:45:042
1101599161,3cyclictest0-21swapper/121:31:241
11015991613,2cyclictest23300-21kworker/u8:100:19:041
11015991612,2cyclictest6024-21kworker/u8:121:25:051
1101599161,13cyclictest28632-21cat19:51:031
1101599161,13cyclictest23088-21munin-node1
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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