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2026-03-27 - 01:52

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 (updated Thu Mar 26, 2026 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1708990995448,4cyclictest1775429-21kworker/u8:1+events_unbound10:15:423
1708982995136,11cyclictest231ktimers/111:10:111
1708985994942,4cyclictest1731688-21munin-plugin-st08:15:002
1708985994940,5cyclictest1786036-21cron10:50:002
1708979994942,5cyclictest1710234-21kworker/u8:2+events_unbound07:15:030
1708985994838,6cyclictest204-21dbus-daemon07:15:022
1708979994640,4cyclictest1775429-21kworker/u8:1+events_unbound10:25:460
1708982994434,7cyclictest1740647-21sendmail08:40:011
1708990994334,7cyclictest391ktimers/311:05:113
1708985994333,6cyclictest1784337-21cron10:45:002
1708990994232,5cyclictest1753205-21cut09:15:173
1708985994228,10cyclictest311ktimers/210:10:112
1708982994234,5cyclictest1782621-21cron10:40:001
1708990994129,9cyclictest391ktimers/307:25:133
1708982994130,7cyclictest1711017-21sort07:15:031
1708979994033,4cyclictest1752789-21cron09:15:010
1708990993931,4cyclictest1740619-21cron08:40:013
1708990993931,4cyclictest0-21swapper/310:15:003
1708990993929,7cyclictest1770037-21grep10:00:243
1708982993916,14cyclictest0-21swapper/112:05:011
1708979993932,5cyclictest1816947-21auditctl12:20:000
1708990993829,6cyclictest1781344-21fschecks_time10:35:153
1708990993730,4cyclictest0-21swapper/309:50:263
1708985993725,8cyclictest1764952-21idleruntime-cro09:50:002
1708982993718,4cyclictest131rcu_preempt11:40:141
1708979993730,5cyclictest151rcuc/010:55:100
1708979993730,5cyclictest151rcuc/010:55:100
1708979993727,7cyclictest1740622-21cron08:40:020
1708985993628,4cyclictest0-21swapper/211:30:162
170898299367,18cyclictest24-21ksoftirqd/107:30:001
1708982993628,6cyclictest231ktimers/110:30:121
1708982993628,4cyclictest1779234-21munin-plugin-st10:30:001
1708979993628,5cyclictest1810130-21sendmail11:59:590
1708979993628,4cyclictest0-21swapper/010:10:150
170897999361,5cyclictest0-21swapper/007:50:130
170899099355,11cyclictest0-21swapper/307:15:013
1708990993527,4cyclictest0-21swapper/309:45:173
1708990993524,7cyclictest1743812-21grep08:45:243
170898299356,15cyclictest24-21ksoftirqd/112:35:241
1708982993528,3cyclictest0-21swapper/109:25:011
1708982993527,4cyclictest0-21swapper/107:30:241
1708982993525,6cyclictest1800932-21grep11:30:251
1708982993523,9cyclictest1796273-21cron11:20:001
1708982993523,5cyclictest131rcu_preempt07:59:271
1708982993522,5cyclictest131rcu_preempt12:06:531
1708979993529,4cyclictest1801047-21kworker/u8:3+events_unbound11:35:520
1708979993529,4cyclictest1757755-21kworker/u8:0+events_unbound10:05:440
1708979993526,6cyclictest1754520-21sendmail09:20:000
1708979993522,10cyclictest151rcuc/012:00:130
1708990993426,4cyclictest0-21swapper/311:35:253
1708985993425,6cyclictest1790744-21unixbench_singl11:00:252
1708985993424,7cyclictest1770490-21auditctl10:05:002
1708985993424,6cyclictest0-21swapper/208:20:002
170898299347,8cyclictest24-21ksoftirqd/109:25:201
1708982993427,4cyclictest0-21swapper/112:20:001
1708982993425,4cyclictest0-21swapper/108:20:001
1708979993426,4cyclictest0-21swapper/012:30:260
1708979993426,4cyclictest0-21swapper/008:30:000
1708979993426,4cyclictest0-21swapper/008:30:000
1708979993425,5cyclictest1742956-21fschecks_count08:45:150
1708979993424,6cyclictest0-21swapper/008:25:000
1708979993424,6cyclictest0-21swapper/008:25:000
1708979993419,12cyclictest13550irq/42-30be0000.ethernet07:45:120
170899099337,14cyclictest40-21ksoftirqd/312:05:003
170899099335,15cyclictest40-21ksoftirqd/307:40:243
1708990993326,4cyclictest0-21swapper/312:20:003
1708990993325,4cyclictest0-21swapper/308:20:333
1708990993325,4cyclictest0-21swapper/308:20:323
1708990993324,6cyclictest1772187-21sh10:10:003
1708990993317,5cyclictest131rcu_preempt11:57:223
1708990993314,6cyclictest1766645-21apt-get09:55:063
1708985993324,5cyclictest0-21swapper/207:45:162
170898299336,13cyclictest24-21ksoftirqd/108:25:011
170898299336,13cyclictest24-21ksoftirqd/108:25:011
1708982993326,4cyclictest0-21swapper/107:50:251
1708982993322,4cyclictest131rcu_preempt10:48:021
1708982993321,7cyclictest0-21swapper/109:15:181
1708982993321,5cyclictest131rcu_preempt11:46:461
1708982993321,4cyclictest131rcu_preempt08:34:151
1708982993317,4cyclictest131rcu_preempt10:02:081
1708982993316,5cyclictest131rcu_preempt08:10:231
1708982993316,4cyclictest131rcu_preempt10:50:251
1708982993316,4cyclictest131rcu_preempt10:50:251
1708979993322,7cyclictest0-21swapper/009:05:250
1708990993225,3cyclictest0-21swapper/312:10:253
1708990993222,6cyclictest1714173-21unixbench_multi07:20:243
1708985993223,6cyclictest1811840-21sh12:05:002
170898299327,5cyclictest24-21ksoftirqd/108:30:021
170898299327,4cyclictest231ktimers/109:10:011
1708982993224,4cyclictest0-21swapper/110:15:161
1708982993224,4cyclictest0-21swapper/107:50:001
1708982993224,4cyclictest0-21swapper/107:40:251
1708982993222,7cyclictest221rcuc/111:50:161
1708982993222,6cyclictest0-21swapper/110:10:241
1708982993217,5cyclictest131rcu_preempt11:39:011
1708982993217,5cyclictest131rcu_preempt10:55:141
1708982993217,5cyclictest131rcu_preempt10:55:131
1708982993216,10cyclictest131rcu_preempt10:20:111
1708982993213,5cyclictest131rcu_preempt11:55:101
1708982993213,10cyclictest131rcu_preempt08:45:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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