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2026-06-27 - 17:41
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot6.osadl.org (updated Sat Jun 27, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
165462999127117,7cyclictest1762226-21latency_hist12:40:000
165462999127117,7cyclictest1712121-21latency_hist10:05:020
165463399123115,6cyclictest1697767-21kworker/u8:2+events_unbound09:45:011
165462999123113,7cyclictest1666250-21kworker/u8:3+flush-179:008:50:010
165463399114106,6cyclictest1686384-21kworker/u8:0+events_unbound08:50:271
165463399114103,8cyclictest1717111-21kworker/u8:1+events_unbound10:20:231
165462999114102,9cyclictest1720331-21latency_hist10:30:010
16546339911094,6cyclictest1733818-21kworker/u8:1+flush-179:011:15:201
16546339911094,6cyclictest1733818-21kworker/u8:1+flush-179:011:15:201
165463399110102,5cyclictest1717195-21kworker/u8:3+flush-179:011:35:241
16546339910991,7cyclictest1744764-21kworker/u8:1+events_unbound12:05:231
165463399109104,3cyclictest1717111-21kworker/u8:1+events_unbound10:35:241
16546339910697,6cyclictest1659341-21kworker/u8:1+events_unbound07:40:021
165463399105100,4cyclictest1654573-21kworker/u8:2+events_unbound07:25:241
165463399104100,3cyclictest1725608-21kworker/u8:0+flush-179:011:05:261
16546339910398,4cyclictest1713825-21kworker/u8:0+events_unbound10:15:251
16546339910395,6cyclictest1720316-21kworker/u8:2+events_unbound10:40:021
16546339910393,6cyclictest1692783-21kworker/u8:3+events_unbound09:45:221
16546339910295,4cyclictest1747934-21kworker/u8:3+events_unbound12:35:181
16546339910293,6cyclictest1666250-21kworker/u8:3+flush-179:008:25:021
16546339910195,4cyclictest1666250-21kworker/u8:3+flush-179:008:20:211
16546339910191,7cyclictest1694370-21apt-get09:10:001
16546339910094,4cyclictest1754312-21kworker/u8:1+flush-179:012:20:191
16546299910092,6cyclictest1752679-21latency_hist12:10:010
1654633999991,5cyclictest1717195-21kworker/u8:3+events_unbound10:25:171
1654633999888,7cyclictest1686403-21latency_hist08:45:011
1654633999690,5cyclictest1754247-21kworker/u8:0+events_unbound12:25:251
1654633999688,5cyclictest1702541-21kworker/u8:0+events_unbound09:35:251
1654633999684,4cyclictest1669674-21kworker/u8:1+events_unbound08:15:011
1654629999588,5cyclictest1677119-21kworker/u8:2+flush-179:008:55:000
1654633999485,6cyclictest1666250-21kworker/u8:3+events_unbound07:50:201
1654633999387,4cyclictest1733818-21kworker/u8:1+flush-179:011:30:191
1654629999384,6cyclictest1747899-21latency_hist11:55:010
1654633999186,4cyclictest1717195-21kworker/u8:3+events_unbound11:10:251
1654629999080,8cyclictest1699646-21apt-get09:25:120
1654633998986,2cyclictest0-21swapper/111:53:591
1654633998984,4cyclictest1692783-21kworker/u8:3+events_unbound09:25:261
1654633998983,4cyclictest1717195-21kworker/u8:3+flush-179:011:25:171
1654633998983,4cyclictest1697767-21kworker/u8:2+flush-179:010:05:211
1654633998980,6cyclictest1697767-21kworker/u8:2+events_unbound09:30:171
1654633998879,7cyclictest1686384-21kworker/u8:0+events_unbound08:45:151
1654633998858,26cyclictest1659302-21apt-get07:24:591
1654633998781,4cyclictest1659341-21kworker/u8:1+events_unbound07:30:241
1654629998675,7cyclictest1671306-21apt-get08:00:010
1654633998579,4cyclictest1686384-21kworker/u8:0+flush-179:009:00:201
1654633998578,4cyclictest1725608-21kworker/u8:0+events_unbound10:45:211
1654629998575,7cyclictest1678189-21latency_hist08:20:010
1654629998575,6cyclictest1213033-21systemd-journal10:15:000
1654629998477,5cyclictest1669674-21kworker/u8:1+flush-179:008:10:180
1654629998475,6cyclictest1-21systemd11:20:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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