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2026-04-27 - 20:52

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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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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
Compare latency of primary with shadow system
Characteristics of the 376 highest latencies:
System rackeslot4s.osadl.org (updated Mon Apr 27, 2026 12:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4010690994842,5cyclictest252-21systemd-journal10:25:000
4010690994337,4cyclictest117094-21cp12:00:000
4010690994336,5cyclictest4073582-21latency_hist08:10:010
4010698994236,4cyclictest80806-21latency_hist11:25:012
4010700993934,3cyclictest4026433-21cp07:25:003
4010690993833,4cyclictest1949870-21kworker/u8:0+flush-259:007:15:210
4010694993732,4cyclictest44924-21kworker/u8:3+flush-259:011:10:001
4010690993732,3cyclictest1949870-21kworker/u8:0+flush-259:007:40:240
4010690993730,5cyclictest4165242-21ntpq09:35:230
4010690993632,3cyclictest8654-21kworker/u8:0+events_unbound11:55:000
4010700993422,4cyclictest101686-21apt-get11:45:123
4010694993427,4cyclictest252-21systemd-journal08:10:421
4010690993428,5cyclictest153908-21cat12:35:010
4010690993427,5cyclictest105666-21ntpq11:45:210
4010690993329,3cyclictest4160957-21kworker/u8:0+flush-259:009:45:000
4010700993227,4cyclictest116927-21http12:00:003
4010698993228,3cyclictest4042583-21apt-get07:40:112
4010698993226,4cyclictest252-21systemd-journal11:35:002
4010690993227,4cyclictest39978-21diskstats10:45:130
4010694993127,3cyclictest111952-21kworker/u8:4+flush-259:011:55:251
4010690993125,5cyclictest4150947-21apt-get09:25:110
4010690993124,5cyclictest4109548-21latency_hist08:45:020
4010690993123,5cyclictest4130529-21diskstats09:05:140
4010698993026,3cyclictest127882-21kworker/u8:0+flush-259:012:20:162
4010694993025,3cyclictest4119868-21kworker/u8:2+flush-259:009:30:201
4010690993026,3cyclictest55304-21apt-get11:00:110
4010690993026,3cyclictest4083862-21kworker/u8:3+flush-259:008:45:170
4010690993026,3cyclictest4021103-21kworker/u8:1+events_unbound08:00:210
4010690993023,5cyclictest4160073-21ntpq09:30:210
401069099301,27cyclictest4036776-21true07:35:000
4010698992925,3cyclictest4021103-21kworker/u8:1+flush-259:007:20:132
4010694992925,3cyclictest148519-21apt-get12:30:111
4010690992925,3cyclictest4021103-21kworker/u8:1+flush-259:009:10:220
4010690992925,3cyclictest1949870-21kworker/u8:0+flush-259:007:35:170
4010690992922,5cyclictest252-21systemd-journal09:15:180
4010698992823,4cyclictest34207-21apt-get10:38:192
4010698992823,4cyclictest122488-21latency_hist12:05:002
4010698992823,3cyclictest4130100-21latency_hist09:05:022
4010694992824,3cyclictest4021103-21kworker/u8:1+flush-259:007:25:171
4010690992824,3cyclictest4109574-21kworker/u8:0+events_unbound08:50:020
4010690992824,3cyclictest1949870-21kworker/u8:0+flush-259:007:10:240
4010690992823,3cyclictest4119868-21kworker/u8:2+flush-259:010:15:010
4010698992722,4cyclictest4057743-21apt-get07:55:012
4010694992723,3cyclictest8654-21kworker/u8:0+flush-259:011:30:261
4010694992723,3cyclictest4021103-21kworker/u8:1+flush-259:007:50:251
4010694992723,2cyclictest4119868-21kworker/u8:2+flush-259:009:45:251
4010694992722,4cyclictest4160957-21kworker/u8:0+events_unbound09:55:151
4010694992722,4cyclictest143355-21apt-get12:25:091
4010694992722,3cyclictest8654-21kworker/u8:0+events_unbound11:10:331
4010690992718,6cyclictest38640-21ntpq10:40:230
4010700992622,3cyclictest4119868-21kworker/u8:2+flush-259:010:00:163
4010700992622,3cyclictest4119868-21kworker/u8:2+flush-259:010:00:163
4010694992623,2cyclictest4119868-21kworker/u8:2+flush-259:009:24:591
4010694992622,3cyclictest4119868-21kworker/u8:2+events_unbound09:40:231
4010694992620,4cyclictest4042556-21/usr/sbin/munin07:40:221
4010694992620,4cyclictest13770-21latency_hist10:20:011
4010690992622,3cyclictest4021103-21kworker/u8:1+flush-259:007:30:000
4010700992519,4cyclictest106822-21/usr/sbin/munin11:50:193
4010694992522,2cyclictest4021103-21kworker/u8:1+flush-259:009:19:591
4010694992520,4cyclictest8654-21kworker/u8:0+flush-259:011:45:161
4010694992520,4cyclictest4119868-21kworker/u8:2+events_unbound11:00:251
4010690992521,3cyclictest70709-21kworker/u8:1+flush-259:011:25:240
4010690992521,3cyclictest1949870-21kworker/u8:0+flush-259:008:10:200
4010690992520,3cyclictest4181528-21kworker/u8:1+events_unbound10:05:190
4010690992519,4cyclictest4176611-21/usr/sbin/munin09:50:150
4010700992419,4cyclictest4078988-21apt-get08:15:123
4010700992418,4cyclictest252-21systemd-journal10:40:013
4010694992420,3cyclictest127882-21kworker/u8:0+events_unbound12:25:011
4010690992421,2cyclictest4119868-21kworker/u8:2+events_unbound10:00:220
4010690992421,2cyclictest4119868-21kworker/u8:2+events_unbound10:00:220
4010690992420,3cyclictest85963-21kworker/u8:3+flush-259:011:40:200
4010690992420,3cyclictest4109574-21kworker/u8:0+events_unbound09:00:010
4010690992420,3cyclictest4021103-21kworker/u8:1+events_unbound08:15:190
4010690992420,3cyclictest1949870-21kworker/u8:0+events_unbound07:55:200
4010690992420,3cyclictest111952-21kworker/u8:4+flush-259:012:05:190
4010698992319,3cyclictest127882-21kworker/u8:0+flush-259:012:25:152
4010698992317,4cyclictest252-21systemd-journal11:31:132
4010694992319,3cyclictest4021103-21kworker/u8:1+flush-259:009:00:201
4010694992319,3cyclictest4021103-21kworker/u8:1+events_unbound08:50:241
4010694992318,3cyclictest85963-21kworker/u8:3+flush-259:012:04:591
4010694992318,3cyclictest70709-21kworker/u8:1+flush-259:011:15:211
4010690992319,3cyclictest44924-21kworker/u8:3+events_unbound11:05:210
4010700992217,3cyclictest4149714-21needreboot09:20:193
4010698992219,2cyclictest4083862-21kworker/u8:3+events_unbound08:35:012
4010698992218,3cyclictest4119868-21kworker/u8:2+flush-259:011:20:012
4010698992218,3cyclictest1949870-21kworker/u8:0+flush-259:007:30:132
4010694992218,3cyclictest70709-21kworker/u8:1+flush-259:011:55:001
4010694992218,3cyclictest1949870-21kworker/u8:0+flush-259:007:10:121
4010694992217,4cyclictest127882-21kworker/u8:0+flush-259:012:35:211
4010690992219,2cyclictest8654-21kworker/u8:0+flush-259:010:35:160
4010690992219,2cyclictest70709-21kworker/u8:1+events_unbound11:15:230
4010690992219,2cyclictest4083862-21kworker/u8:3+flush-259:008:25:220
4010690992218,3cyclictest4119868-21kworker/u8:2+events_unbound10:30:210
4010690992218,3cyclictest4119868-21kworker/u8:2+events_unbound09:20:190
4010690992217,4cyclictest1949870-21kworker/u8:0+events_unbound07:10:000
4010700992117,3cyclictest4160957-21kworker/u8:0+flush-259:009:50:163
4010700992117,3cyclictest4114955-21apt-get08:50:143
4010700992117,3cyclictest127882-21kworker/u8:0+flush-259:012:30:203
4010700992115,4cyclictest121623-21ntpq12:00:223
4010700992114,5cyclictest69567-21ntpq11:10:193
4010698992117,3cyclictest4119868-21kworker/u8:2+flush-259:009:35:002
4010698992117,3cyclictest4083862-21kworker/u8:3+flush-259:008:25:192
4010698992117,3cyclictest4021103-21kworker/u8:1+flush-259:009:10:172
4010698992115,5cyclictest252-21systemd-journal09:24:592
401069899210,19cyclictest1-21systemd10:45:002
4010694992118,2cyclictest18554-21kworker/u8:3+events_unbound10:25:251
4010694992115,4cyclictest509-21rs:main1
4010690992115,4cyclictest4021103-21kworker/u8:1+flush-259:009:00:240
4010690992114,6cyclictest4026059-21apt-get07:25:000
4010700992017,2cyclictest24094-21kworker/u8:1+flush-259:010:45:003
4010700992016,2cyclictest70741-21apt-get11:15:113
4010698992017,2cyclictest4021103-21kworker/u8:1+flush-259:008:35:152
4010694992017,2cyclictest8654-21kworker/u8:0+events_unbound10:38:191
4010694992014,4cyclictest4135264-21latency_hist09:10:001
4010690992016,3cyclictest4181528-21kworker/u8:1+flush-259:010:15:160
4010690992016,3cyclictest1949870-21kworker/u8:0+flush-259:008:20:190
4010690992015,4cyclictest44924-21kworker/u8:3+events_unbound10:50:230
4010690992015,3cyclictest127882-21kworker/u8:0+events_unbound12:10:170
4010690992013,5cyclictest252-21systemd-journal11:25:010
4010700991915,3cyclictest4119868-21kworker/u8:2+flush-259:011:00:233
4010700991915,3cyclictest4021103-21kworker/u8:1+flush-259:008:00:263
4010700991913,4cyclictest4057938-21cp07:55:003
4010698991915,3cyclictest44924-21kworker/u8:3+flush-259:010:55:172
4010694991916,2cyclictest1949870-21kworker/u8:0+events_unbound07:45:231
4010694991915,3cyclictest70709-21kworker/u8:1+flush-259:011:20:161
4010694991915,3cyclictest4021103-21kworker/u8:1+flush-259:008:55:151
4010694991915,3cyclictest4021103-21kworker/u8:1+events_unbound09:25:171
4010694991915,3cyclictest127882-21kworker/u8:0+events_unbound12:10:211
4010690991916,2cyclictest18554-21kworker/u8:3+events_unbound10:25:280
4010690991915,3cyclictest4021103-21kworker/u8:1+events_unbound08:30:160
4010690991914,3cyclictest44924-21kworker/u8:3+events_unbound11:10:210
401069099191,16cyclictest4186698-21munin-run10:00:000
401070099189,2cyclictest4104419-21idleruntime-cro08:40:013
4010700991812,4cyclictest4171661-21diskstats09:45:153
4010698991815,2cyclictest509-21rs:main2
4010694991814,3cyclictest44924-21kworker/u8:3+flush-259:010:50:251
4010694991814,3cyclictest24094-21kworker/u8:1+flush-259:010:45:261
4010690991814,3cyclictest70709-21kworker/u8:1+events_unbound11:35:210
4010690991814,3cyclictest127882-21kworker/u8:0+events_unbound12:20:430
4010700991713,3cyclictest44924-21kworker/u8:3+flush-259:011:05:253
4010700991712,4cyclictest4042012-21gpgv07:40:003
4010700991712,3cyclictest158961-21latency_hist12:40:013
4010698991711,4cyclictest252-21systemd-journal10:30:542
4010698991711,4cyclictest252-21systemd-journal08:05:442
4010694991714,2cyclictest4160957-21kworker/u8:0+flush-259:009:50:201
4010694991713,3cyclictest4181528-21kworker/u8:1+events_unbound10:05:231
4010694991713,3cyclictest1949870-21kworker/u8:0+flush-259:007:30:211
4010694991713,3cyclictest122515-21kworker/u8:1+events_unbound12:15:201
4010694991712,4cyclictest50117-21/usr/sbin/munin10:55:161
4010694991711,5cyclictest0-21swapper/108:45:001
401069099178,7cyclictest90245-21ntpq11:30:210
4010690991713,3cyclictest127882-21kworker/u8:0+flush-259:012:17:370
4010690991713,3cyclictest127882-21kworker/u8:0+events_unbound12:25:140
4010690991712,4cyclictest44924-21kworker/u8:3+events_unbound10:55:240
4010690991712,3cyclictest4052857-21/usr/sbin/munin07:50:140
4010690991712,3cyclictest153435-21systemd-run12:35:000
4010700991610,4cyclictest252-21systemd-journal09:00:003
4010698991613,2cyclictest1949870-21kworker/u8:0+flush-259:007:10:162
4010698991613,2cyclictest0-21swapper/207:40:002
4010698991612,3cyclictest8654-21kworker/u8:0+flush-259:011:50:122
4010694991613,2cyclictest4119868-21kworker/u8:2+flush-259:010:40:181
4010694991613,2cyclictest4026308-21apt-config07:25:011
4010694991613,2cyclictest4021103-21kworker/u8:1+flush-259:008:00:201
4010690991611,4cyclictest4119868-21kworker/u8:2+events_unbound09:45:180
4010700991512,2cyclictest96967-21irqcore11:40:163
4010700991511,3cyclictest4021103-21kworker/u8:1+flush-259:007:25:273
4010700991511,3cyclictest1949870-21kworker/u8:0+flush-259:008:20:483
4010700991510,4cyclictest252-21systemd-journal08:48:413
4010698991512,2cyclictest85963-21kworker/u8:3+flush-259:012:05:132
4010698991512,2cyclictest152493-21ntp_kernel_pll_12:30:192
4010698991511,3cyclictest252-21systemd-journal09:55:002
401069499157,6cyclictest85946-21munin-plugin-st11:30:011
4010694991512,1cyclictest0-21swapper/112:10:001
4010694991511,3cyclictest4021103-21kworker/u8:1+events_unbound08:05:121
4010690991512,2cyclictest60350irq/132-enp0s29f1:rx-012:00:250
401070099148,4cyclictest4104682-21apt-get08:40:133
4010700991411,2cyclictest91117-21turbostat.cron11:35:003
4010700991411,2cyclictest4032878-21tr07:30:153
4010700991411,2cyclictest3042-21unixbench_singl10:05:273
401069899148,4cyclictest4120093-21apt-get08:55:132
4010698991412,1cyclictest4145546-21idleruntime-cro09:20:002
4010698991412,1cyclictest0-21swapper/210:00:012
4010698991411,2cyclictest127981-21cpuspeed_turbos12:10:132
4010694991410,3cyclictest70709-21kworker/u8:1+flush-259:011:35:161
4010694991410,3cyclictest4119868-21kworker/u8:2+flush-259:010:00:141
4010694991410,3cyclictest4119868-21kworker/u8:2+flush-259:010:00:131
4010690991412,1cyclictest60350irq/132-enp0s29f1:rx-007:48:450
4010700991310,2cyclictest43679-21needreboot10:45:193
401069899139,3cyclictest252-21systemd-journal10:00:012
401069899139,3cyclictest252-21systemd-journal10:00:002
4010698991310,2cyclictest4082916-21ntp_kernel_err08:15:212
4010698991310,2cyclictest4021103-21kworker/u8:1+flush-259:008:23:132
401069499139,3cyclictest4119868-21kworker/u8:2+flush-259:010:30:111
4010694991310,2cyclictest1949870-21kworker/u8:0+events_unbound07:15:211
4010690991310,2cyclictest60350irq/132-enp0s29f1:rx-008:35:210
401070099129,2cyclictest4139952-21unixbench_multi09:10:253
401070099129,2cyclictest4094819-21irqcore08:30:173
401070099129,2cyclictest4010968-21cpuspeed_turbos07:10:123
401070099129,2cyclictest147240-21needreboot12:25:183
401070099129,2cyclictest133118-21cpuspeed_turbos12:15:133
401070099128,3cyclictest50451-21smartctl10:55:163
401069899129,2cyclictest85963-21kworker/u8:3+flush-259:012:18:122
401069899129,2cyclictest4050017-21kthreadcore07:45:172
401069899128,3cyclictest4020825-21journal-offline07:19:442
401069899126,4cyclictest513-21gdbus08:45:002
401069899120,3cyclictest65377-21awk11:10:002
401069499128,3cyclictest4021103-21kworker/u8:1+flush-259:008:15:211
401070099119,1cyclictest128008-21cpuspeed_turbos12:10:133
401070099119,1cyclictest0-21swapper/310:15:163
401070099119,1cyclictest0-21swapper/310:10:163
401070099118,2cyclictest83351-21kthreadcore11:25:183
401070099118,2cyclictest4021103-21kworker/u8:1+flush-259:007:44:533
401070099118,2cyclictest23593-21unixbench_multi10:25:263
401069899115,4cyclictest153395-21apt-get12:35:012
401069499117,3cyclictest4094406-21apt-get08:30:131
401069499115,4cyclictest8654-21kworker/u8:0+flush-259:011:40:161
401070099105,3cyclictest4161466-21fw_forwarded_lo09:35:153
401069499107,2cyclictest4037430-21irqcore07:35:171
401069499104,4cyclictest252-21systemd-journal08:45:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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