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2026-07-11 - 16:09
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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 Jul 11, 2026 12:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
180045399143126,7cyclictest1811666-21kworker/u8:1+events_unbound08:04:011
180045199136125,8cyclictest1871854-21latency_hist10:50:010
180045399129115,5cyclictest1834197-21kworker/u8:1+events_unbound09:30:011
180045199124112,9cyclictest1816406-21latency_hist08:00:010
180045399123117,5cyclictest1884836-21kworker/u8:0+events_unbound11:30:001
180045399123117,5cyclictest1884836-21kworker/u8:0+events_unbound11:30:001
180045199120110,7cyclictest1805243-21latency_hist07:25:010
180045399116107,7cyclictest1897613-21kworker/u8:3+flush-179:012:35:011
180045199116102,10cyclictest1213033-21systemd-journal12:05:000
180045399113104,7cyclictest1892789-21kworker/u8:0+flush-179:012:10:251
180045399112108,3cyclictest1849299-21kworker/u8:3+flush-179:009:40:251
180045399112103,7cyclictest1831074-21kworker/u8:3+events_unbound09:15:031
18004539911197,6cyclictest1888079-21kworker/u8:1+events_unbound12:00:251
18004539910999,7cyclictest1878458-21kworker/u8:0+events_unbound11:20:261
18004519910899,6cyclictest1827846-21latency_hist08:35:000
180045399105100,3cyclictest1873734-21kworker/u8:2+flush-179:011:05:251
18004539910398,4cyclictest1816453-21kworker/u8:3+events_unbound08:05:251
18004539910393,7cyclictest1802036-21kworker/u8:3+events_unbound07:45:241
18004539910391,8cyclictest1897613-21kworker/u8:3+events_unbound12:20:201
18004539910195,4cyclictest1902597-21kworker/u8:0+events_unbound12:30:001
18004539910194,5cyclictest1892789-21kworker/u8:0+flush-179:012:05:231
18004539910094,4cyclictest1802036-21kworker/u8:3+events_unbound07:20:221
18004539910092,5cyclictest1855644-21kworker/u8:0+events_unbound10:20:151
18004539910092,5cyclictest1855644-21kworker/u8:0+events_unbound10:20:151
1800451999885,10cyclictest1213033-21systemd-journal08:55:010
1800453999789,5cyclictest1855644-21kworker/u8:0+flush-179:010:30:211
1800453999781,5cyclictest1859154-21kworker/u8:3+events_unbound10:25:191
1800453999690,4cyclictest1855644-21kworker/u8:0+flush-179:010:35:211
1800453999688,5cyclictest1888009-21kworker/u8:0+flush-179:011:45:231
1800453999587,5cyclictest1805279-21kworker/u8:1+flush-179:007:30:201
1800453999587,5cyclictest1805279-21kworker/u8:1+flush-179:007:30:201
1800453999585,7cyclictest1213033-21systemd-journal07:10:171
1800453999489,3cyclictest1855644-21kworker/u8:0+events_unbound10:05:251
1800453999488,4cyclictest1798717-21kworker/u8:1+events_unbound07:15:191
1800453999484,7cyclictest1846168-21kworker/u8:0+flush-179:009:35:211
1800453999480,5cyclictest1834197-21kworker/u8:1+events_unbound09:20:141
1800453999187,3cyclictest1855662-21kworker/u8:1+events_unbound10:10:261
1800453999185,4cyclictest1823129-21kworker/u8:0+events_unbound08:25:201
1800453998883,4cyclictest1802036-21kworker/u8:3+events_unbound07:35:241
1800453998882,4cyclictest1876869-21kworker/u8:3+flush-179:011:10:211
1800453998882,4cyclictest1855644-21kworker/u8:0+flush-179:010:00:211
1800453998872,5cyclictest1888079-21kworker/u8:1+events_unbound12:15:241
180045399881,85cyclictest1-21systemd08:20:011
1800453998783,3cyclictest1873683-21kworker/u8:1+flush-179:011:00:261
1800451998781,4cyclictest1831074-21kworker/u8:3+flush-179:009:05:210
1800453998575,7cyclictest1829420-21kworker/u8:1+events_unbound08:40:191
1800453998575,7cyclictest1827831-21kworker/u8:0+events_unbound08:50:141
1800453998479,3cyclictest1814787-21kworker/u8:0+events_unbound07:55:231
1800453998476,5cyclictest1871839-21kworker/u8:0+events_unbound10:55:201
1800451998475,7cyclictest1213033-21systemd-journal09:05:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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