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2026-05-08 - 03:57

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 
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  Intel
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 Fri May 08, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15550012810,3chrt0-21swapper/221:11:042
1433273996561,3cyclictest1593699-21kworker/u8:1+events_unbound23:30:591
1433273996460,3cyclictest1433129-21kworker/u8:0+events_unbound20:05:571
1433273996258,3cyclictest1717755-21kworker/u8:1+events_unbound00:06:171
1433273996258,3cyclictest1575924-21kworker/u8:2+events_unbound21:31:141
1433273996157,3cyclictest1697502-21kworker/u8:3+events_unbound23:36:131
1433273996157,3cyclictest1433129-21kworker/u8:0+events_unbound21:55:581
1433273996157,3cyclictest1433129-21kworker/u8:0+events_unbound21:26:121
16786712600,1sleep01678674-21basename23:16:020
1433273996056,3cyclictest1433129-21kworker/u8:0+events_unbound20:25:581
1433270996054,4cyclictest1717755-21kworker/u8:1+events_unbound00:26:180
1433273995950,7cyclictest1548972-21latency_hist21:05:011
1433275995849,6cyclictest280-21systemd-journal20:05:012
1433273995854,3cyclictest609401-21kworker/u8:2+events_unbound19:41:121
1433273995854,3cyclictest1433129-21kworker/u8:0+events_unbound21:46:181
1433273995854,3cyclictest1433129-21kworker/u8:0+events_unbound19:36:111
1433270995750,4cyclictest1534158-21latency_hist20:50:010
1433273995652,3cyclictest1433129-21kworker/u8:0+events_unbound20:45:031
1433273995648,6cyclictest1514464-21apt-get20:30:551
1433273995648,5cyclictest1653274-21latency_hist22:50:011
1433273995646,8cyclictest1721823-21ntpq23:56:081
1433270995650,4cyclictest1433129-21kworker/u8:0+events_unbound22:46:120
1433270995547,5cyclictest1433129-21kworker/u8:0+events_unbound23:55:540
1433270995449,3cyclictest1423560-21kworker/u8:1+flush-8:019:11:150
1433273995350,2cyclictest1756744-21kworker/u8:0+events_unbound00:36:161
1433273995349,3cyclictest1697502-21kworker/u8:3+events_unbound23:45:581
1433270995348,4cyclictest1423560-21kworker/u8:1+flush-8:019:46:090
1433275995244,5cyclictest1722679-40logrotate00:00:002
1433273995246,4cyclictest1534479-21apt-get20:50:561
1433270995248,3cyclictest1423560-21kworker/u8:1+flush-8:020:06:120
1433273995145,4cyclictest1594308-21apt-get21:50:561
1433270995146,4cyclictest609401-21kworker/u8:2+flush-8:020:31:120
1433270995145,4cyclictest1593699-21kworker/u8:1+events_unbound22:36:180
1433270995045,3cyclictest1604140-21kworker/u8:2+events_unbound22:31:120
1433273994940,6cyclictest1691920-21ntpq23:26:091
1433270994945,3cyclictest1697502-21kworker/u8:3+events_unbound23:51:030
1433270994944,3cyclictest609401-21kworker/u8:2+flush-8:019:16:150
1433270994943,4cyclictest1568465-21kworker/u8:3+flush-8:021:41:150
1433270994938,9cyclictest280-21systemd-journal21:55:010
1433273994844,3cyclictest1593699-21kworker/u8:1+events_unbound22:31:001
1433273994844,3cyclictest1433129-21kworker/u8:0+events_unbound19:26:191
1433273994842,4cyclictest1742840-21apt-get00:20:551
1433273994839,6cyclictest1707846-21latency_hist23:45:011
1433270994843,4cyclictest1604140-21kworker/u8:2+flush-8:000:11:150
1433270994843,3cyclictest1697502-21kworker/u8:3+flush-8:023:36:100
1433270994743,3cyclictest1544064-21kworker/u8:1+events_unbound21:21:110
1433275994640,4cyclictest1529247-21gpgv20:45:012
1433273994642,3cyclictest1575924-21kworker/u8:2+events_unbound21:37:511
1433273994642,3cyclictest1575924-21kworker/u8:2+events_unbound21:37:501
1433270994640,4cyclictest1717755-21kworker/u8:1+events_unbound00:40:010
1433270994637,7cyclictest280-21systemd-journal23:50:010
1433273994541,3cyclictest609401-21kworker/u8:2+events_unbound20:21:081
1433273994540,3cyclictest1638771-21apt-get22:35:571
1433270994540,4cyclictest1433129-21kworker/u8:0+events_unbound22:26:130
1433270994540,3cyclictest1593699-21kworker/u8:1+events_unbound23:15:000
1433273994440,3cyclictest1604140-21kworker/u8:2+events_unbound23:03:551
1433273994440,3cyclictest1433129-21kworker/u8:0+events_unbound21:40:571
1433270994440,3cyclictest1604140-21kworker/u8:2+events_unbound22:06:130
1433270994439,3cyclictest1449097-21ntpq19:21:100
1433270994439,3cyclictest1449097-21ntpq19:21:100
1433270994435,6cyclictest1479597-21latency_hist19:55:010
1433273994340,2cyclictest1604140-21kworker/u8:2+events_unbound00:02:561
1433273994339,3cyclictest1604140-21kworker/u8:2+events_unbound23:24:031
1433273994339,3cyclictest1604140-21kworker/u8:2+events_unbound23:24:031
1433273994339,3cyclictest1604140-21kworker/u8:2+events_unbound00:14:141
1433273994339,3cyclictest1433129-21kworker/u8:0+events_unbound21:21:001
1433273994339,3cyclictest1433129-21kworker/u8:0+events_unbound20:40:591
1433273994336,5cyclictest280-21systemd-journal20:13:491
1433273994238,3cyclictest609401-21kworker/u8:2+events_unbound19:30:021
1433273994238,3cyclictest1756744-21kworker/u8:0+events_unbound00:32:551
1433273994238,3cyclictest1433129-21kworker/u8:0+events_unbound22:13:491
1433270994238,3cyclictest1604140-21kworker/u8:2+events_unbound22:56:180
1433270994237,4cyclictest1433129-21kworker/u8:0+flush-8:021:11:150
1433270994236,4cyclictest1433129-21kworker/u8:0+events_unbound19:56:120
1433270994231,8cyclictest1539093-21latency_hist20:55:010
1433273994137,3cyclictest1604140-21kworker/u8:2+events_unbound23:19:551
1433273994137,3cyclictest1593699-21kworker/u8:1+events_unbound22:56:021
1433270994137,3cyclictest1433129-21kworker/u8:0+flush-8:021:06:150
1433270994137,3cyclictest1433129-21kworker/u8:0+flush-8:021:06:140
1433270994134,5cyclictest1575924-21kworker/u8:2+flush-8:021:31:110
1433270994132,6cyclictest1648319-21latency_hist22:45:010
1433273994036,3cyclictest1433129-21kworker/u8:0+events_unbound20:38:491
1433270994036,3cyclictest1593699-21kworker/u8:1+events_unbound22:51:130
1433270994036,3cyclictest1433129-21kworker/u8:0+flush-8:019:26:160
1433270994035,3cyclictest1604140-21kworker/u8:2+flush-8:000:01:170
1433270994033,5cyclictest1604140-21kworker/u8:2+flush-8:022:11:090
1433270994031,4cyclictest1604140-21kworker/u8:2+events_unbound23:31:150
1433273993935,3cyclictest1697502-21kworker/u8:3+events_unbound23:50:541
1433270993933,4cyclictest609401-21kworker/u8:2+flush-8:019:41:150
1433270993933,4cyclictest1604140-21kworker/u8:2+flush-8:022:01:080
1433270993933,4cyclictest1433129-21kworker/u8:0+events_unbound19:36:000
1433275993831,5cyclictest1702905-21cp23:40:012
1433275993831,5cyclictest1598942-21awk21:55:002
1433273993834,3cyclictest609401-21kworker/u8:2+events_unbound20:18:181
1433273993834,3cyclictest609401-21kworker/u8:2+events_unbound19:16:211
1433273993834,3cyclictest609401-21kworker/u8:2+events_unbound19:12:371
1433273993834,3cyclictest1433129-21kworker/u8:0+events_unbound21:08:511
1433273993834,3cyclictest1433129-21kworker/u8:0+events_unbound21:08:511
1433273993834,3cyclictest1433129-21kworker/u8:0+events_unbound19:48:271
1433273993832,4cyclictest1737884-21apt-get00:15:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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