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2025-11-24 - 05:55
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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, lowest P state: performance
Characteristics of the 50 highest latencies:
System rackbslot1.osadl.org (updated Sun Nov 23, 2025 12:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20700212221165,14sleep10-21swapper/107:08:151
20699862220192,18sleep30-21swapper/307:07:483
20700892188165,13sleep00-21swapper/007:09:050
20699332186156,20sleep20-21swapper/207:07:112
209713921340,1sleep1271rcuc/107:35:051
2070355991011,98cyclictest2231737-21chrome09:45:012
2070353997061,6cyclictest2200040-31munin-html09:10:341
2070353996860,6cyclictest2293369-21/usr/share/muni10:45:211
2070355996663,2cyclictest2344444-21kworker/u8:0+flush-179:012:00:152
2070355996258,3cyclictest2138447-21kworker/u8:3+flush-179:009:05:112
2070352996157,3cyclictest2252188-21cat10:05:010
2070355995956,2cyclictest2344444-21kworker/u8:0+flush-179:011:40:352
2070355995955,3cyclictest2179523-21kworker/u8:0+flush-179:009:10:312
2070352995752,3cyclictest2279241-21ntpq10:30:140
2070352995749,6cyclictest2267728-21/usr/share/muni10:20:200
2070355995651,4cyclictest2205440-21kworker/u8:5+flush-179:009:45:012
207035299565,51cyclictest2028984-21kworker/u8:1+efi_rts_wq08:08:170
2070355995551,3cyclictest2169438-21kworker/u8:4+flush-179:009:30:092
2070352995552,2cyclictest2276690-21kworker/u8:1+flush-179:010:30:000
2070355995451,2cyclictest2344444-21kworker/u8:0+flush-179:012:20:202
2070355995450,3cyclictest2231099-21kworker/u8:0+flush-179:010:10:382
2070355995450,3cyclictest2231099-21kworker/u8:0+events_unbound10:55:012
2070352995448,5cyclictest2112631-21/usr/share/muni07:50:090
2070358995343,8cyclictest2408253-21/usr/share/muni12:35:113
2070355995349,3cyclictest2231099-21kworker/u8:0+flush-179:009:50:322
2070358995246,4cyclictest2086843-21/usr/share/muni07:25:143
2070355995250,2cyclictest2028984-21kworker/u8:1+flush-179:007:55:292
2070355995249,2cyclictest2344444-21kworker/u8:0+flush-179:012:15:282
2070355995249,2cyclictest2231099-21kworker/u8:0+flush-179:010:15:422
2070355995248,3cyclictest2085671-21kworker/u8:3+flush-179:007:40:202
2070355995247,3cyclictest2145451-21apt-get08:20:142
2070355995247,3cyclictest2145451-21apt-get08:20:142
2070353995248,3cyclictest2303260-21kworker/u8:1+flush-179:011:00:151
2070358995148,2cyclictest2169438-21kworker/u8:4+flush-179:008:55:333
2070358995147,3cyclictest2074624-31munin-html07:10:353
2070358995147,2cyclictest2231771-21/usr/share/muni09:45:013
2070355995148,2cyclictest2179523-21kworker/u8:0+flush-179:009:25:372
2070355995147,3cyclictest2344444-21kworker/u8:0+flush-179:012:10:222
2070355995147,3cyclictest2080419-21kworker/u8:0+events_unbound08:25:072
2070353995147,3cyclictest2360774-21kworker/u8:4+events_unbound11:55:181
2070353995146,3cyclictest2231099-21kworker/u8:0+events_unbound10:30:101
2070352995148,2cyclictest2329808-21kworker/u8:3+flush-179:011:20:350
207035899503,46cyclictest2028984-21kworker/u8:1+efi_rts_wq08:08:153
2070355995048,2cyclictest2256838-21kworker/u8:3+flush-179:010:47:582
2070355995047,2cyclictest2096412-21kworker/u8:4+flush-179:007:47:562
2070355995047,2cyclictest2080419-21kworker/u8:0+flush-179:008:30:322
207035599503,47cyclictest2028984-21kworker/u8:1+efi_rts_wq08:08:172
2070352995045,4cyclictest2323571-31munin-html11:10:350
2070358994944,4cyclictest2216358-21/usr/share/muni09:30:133
2070355994946,2cyclictest2072053-21kworker/u8:2+events_unbound07:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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