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2025-10-23 - 22:44

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, 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 
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  Phytec
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: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot5s.osadl.org (updated Thu Oct 23, 2025 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3947397994834,10cyclictest121ktimers/011:25:130
3947406994736,6cyclictest0-21swapper/209:35:162
3947406994736,6cyclictest0-21swapper/209:35:162
3947411994532,10cyclictest391ktimers/307:25:143
3947411994532,10cyclictest391ktimers/307:25:143
3947406994332,7cyclictest4020432-21sendmail10:40:002
3947406994332,5cyclictest3983794-21kworker/u8:1+events_unbound09:05:552
3947402994336,4cyclictest4056863-21cron12:25:001
3947397994336,4cyclictest3999737-21munin-plugin-st09:40:000
3947397994336,4cyclictest3999737-21munin-plugin-st09:40:000
3947411994230,7cyclictest0-21swapper/311:30:263
3947411994230,7cyclictest0-21swapper/311:30:263
3947411994229,10cyclictest391ktimers/310:45:173
3947411994227,11cyclictest4034068-21idleruntime-cro11:20:003
3947402994235,5cyclictest4024048-21kworker/u8:1+events_unbound11:06:141
3947411994130,8cyclictest391ktimers/307:30:123
3947411994111,14cyclictest4031016-21/usr/sbin/munin11:10:203
3947406994132,4cyclictest3975229-21idleruntime-cro08:30:012
3947406994132,4cyclictest3975229-21idleruntime-cro08:30:002
3947411994029,7cyclictest4017382-21fschecks_count10:30:163
3947406994030,7cyclictest0-21swapper/210:00:012
394740299404,6cyclictest24-21ksoftirqd/108:55:121
3947411993910,10cyclictest4027855-21grep11:00:183
3947411993910,10cyclictest3961865-21cpuspeed07:50:153
394741199389,10cyclictest3952064-21sed07:20:203
394741199386,15cyclictest4036203-21grep11:25:173
3947411993830,4cyclictest0-21swapper/310:00:013
3947411993827,8cyclictest391ktimers/311:55:103
3947397993830,5cyclictest3983479-21unixbench_multi08:50:250
3947411993710,10cyclictest3983450-21timerwakeupswit08:50:253
3947406993727,6cyclictest0-21swapper/208:55:002
3947406993727,6cyclictest0-21swapper/208:35:262
3947406993726,6cyclictest0-21swapper/212:10:162
3947402993726,7cyclictest3981768-21grep08:45:251
3947402993718,6cyclictest3969877-21kworker/u8:1+events_unbound08:24:251
3947402993718,5cyclictest3987456-21kworker/u8:2+events_unbound09:15:461
394741199367,11cyclictest4019052-21/usr/sbin/munin10:35:133
3947411993628,4cyclictest0-21swapper/309:50:173
3947411993625,6cyclictest0-21swapper/309:45:003
3947406993628,6cyclictest3931003-21kworker/u8:0+events_unbound07:15:292
3947406993626,6cyclictest0-21swapper/212:40:002
3947402993625,6cyclictest0-21swapper/107:20:251
3947411993527,4cyclictest0-21swapper/309:30:293
3947411993526,4cyclictest0-21swapper/310:05:253
3947411993523,8cyclictest0-21swapper/308:05:163
3947411993510,6cyclictest40-21ksoftirqd/310:30:013
3947411993510,6cyclictest3969704-21users08:10:263
3947406993524,6cyclictest0-21swapper/207:55:262
3947406993515,6cyclictest4010412-21kworker/u8:0+events_unbound10:17:082
3947402993529,4cyclictest4037124-21kworker/u8:1+events_unbound11:46:191
3947402993526,6cyclictest0-21swapper/110:00:261
3947402993526,5cyclictest0-21swapper/111:55:241
3947402993525,6cyclictest0-21swapper/108:10:261
3947402993516,5cyclictest3983794-21kworker/u8:1+events_unbound09:05:201
3947397993528,5cyclictest4026851-21kworker/u8:2+events_unbound11:11:140
3947397993528,3cyclictest0-21swapper/007:20:000
3947397993525,7cyclictest3964994-21sendmail08:00:010
3947411993426,4cyclictest0-21swapper/308:00:293
3947411993423,8cyclictest391ktimers/312:20:153
3947406993426,4cyclictest0-21swapper/208:40:522
3947402993417,6cyclictest4034088-21kworker/u8:2+events_unbound11:24:301
3947397993426,4cyclictest0-21swapper/011:40:260
3947397993424,6cyclictest0-21swapper/010:40:000
3947397993423,6cyclictest0-21swapper/008:40:000
394741199337,10cyclictest4059533-21missed_timers12:30:203
394741199336,10cyclictest3987815-21/usr/sbin/munin09:05:233
3947411993323,5cyclictest0-21swapper/311:50:163
3947411993322,7cyclictest0-21swapper/307:45:273
3947411993320,10cyclictest1-21systemd12:16:203
3947406993326,3cyclictest0-21swapper/210:20:162
3947406993323,6cyclictest0-21swapper/210:45:002
3947406993322,6cyclictest0-21swapper/211:45:262
3947406993322,6cyclictest0-21swapper/211:40:252
3947402993326,4cyclictest0-21swapper/107:45:271
3947402993325,5cyclictest3973895-21fschecks_count08:25:171
3947402993325,5cyclictest3973895-21fschecks_count08:25:171
3947402993324,5cyclictest0-21swapper/109:55:261
3947397993326,4cyclictest0-21swapper/011:25:000
3947397993325,4cyclictest0-21swapper/008:40:260
3947397993324,5cyclictest0-21swapper/010:10:260
3947397993323,6cyclictest0-21swapper/011:55:140
3947411993223,6cyclictest4049449-21sort12:05:013
3947411993221,7cyclictest4013108-21grep10:15:293
3947411993218,10cyclictest4061874-21sshd12:36:203
3947406993224,4cyclictest0-21swapper/212:30:162
3947406993224,4cyclictest0-21swapper/211:55:242
3947406993224,4cyclictest0-21swapper/209:25:172
3947406993223,4cyclictest0-21swapper/209:40:152
3947406993222,6cyclictest0-21swapper/210:00:272
3947406993222,6cyclictest0-21swapper/209:30:292
3947406993221,6cyclictest0-21swapper/207:35:252
3947402993225,5cyclictest4037124-21kworker/u8:1+events_unbound11:28:231
3947402993224,4cyclictest0-21swapper/111:35:251
3947402993223,6cyclictest231ktimers/109:20:121
394740299321,8cyclictest24-21ksoftirqd/111:40:121
3947402993212,11cyclictest24-21ksoftirqd/112:05:261
3947397993225,4cyclictest4006988-21fschecks_count10:00:170
3947397993224,4cyclictest0-21swapper/008:10:010
3947397993222,6cyclictest0-21swapper/011:40:000
3947397993222,6cyclictest0-21swapper/010:45:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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