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2026-07-17 - 21:20
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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 Fri Jul 17, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
123954599150142,5cyclictest1312214-21kworker/u8:1+events_unbound11:30:011
123954499136126,7cyclictest1246116-21kworker/u8:1+events_unbound07:45:250
123954499130119,8cyclictest510-21rs:main0
123954499128118,7cyclictest1290950-21kworker/u8:1+flush-179:010:00:000
123954599127120,5cyclictest1295727-21kworker/u8:2+flush-179:010:10:001
123954599125118,4cyclictest1234939-21kworker/u8:3+flush-179:007:35:251
123954599124115,7cyclictest1343344-21kworker/u8:1+events_unbound12:30:241
123954599124115,7cyclictest1343344-21kworker/u8:1+events_unbound12:30:231
123954599124112,8cyclictest1266882-21kworker/u8:3+flush-179:009:35:221
123954499124113,7cyclictest1246113-21kworker/u8:0+events_unbound07:30:000
123954499123116,5cyclictest1304216-21kworker/u8:1+events_unbound10:45:010
123954499123113,8cyclictest1268437-21latency_hist08:40:000
123954599121114,5cyclictest1337937-21kworker/u8:2+events_unbound12:25:001
123954599121114,5cyclictest1252506-21kworker/u8:2+flush-179:007:50:261
123954599121108,10cyclictest510-21rs:main1
123954599120110,7cyclictest1324891-21kworker/u8:3+flush-179:011:35:191
123954499120111,7cyclictest1304216-21kworker/u8:1+events_unbound10:35:000
123954599119107,9cyclictest1273463-21apt-get08:55:121
123954599119107,9cyclictest1273463-21apt-get08:55:121
123954599118109,6cyclictest1266882-21kworker/u8:3+flush-179:008:45:251
123954499115109,4cyclictest1266882-21kworker/u8:3+flush-179:009:25:240
123954599114105,6cyclictest1283027-21latency_hist09:25:011
123954499114105,6cyclictest1312214-21kworker/u8:1+flush-179:011:25:200
123954499114101,10cyclictest1213033-21systemd-journal08:30:010
123954599113104,6cyclictest1328083-21kworker/u8:0+events_unbound12:10:261
123954599113104,5cyclictest1234939-21kworker/u8:3+events_unbound07:25:151
123954599113103,7cyclictest1290950-21kworker/u8:1+events_unbound10:00:201
123954599113103,7cyclictest1281434-21latency_hist09:20:011
123954499113105,6cyclictest1304227-21latency_hist10:30:010
123954599112104,6cyclictest1270082-21kworker/u8:1+events_unbound08:55:011
123954599111104,4cyclictest1332600-21kworker/u8:1+flush-179:011:55:231
123954599111102,6cyclictest1304216-21kworker/u8:1+events_unbound10:30:161
123954499111105,3cyclictest191rcuc/008:10:010
12395449911095,5cyclictest1321783-21kworker/u8:2+events_unbound11:40:260
123954599109100,6cyclictest1257338-21kworker/u8:3+flush-179:008:10:011
12395449910996,10cyclictest1329692-21latency_hist11:50:010
123954499109103,4cyclictest1310572-21kworker/u8:3+flush-179:011:20:000
123954599108101,5cyclictest1234939-21kworker/u8:3+flush-179:007:20:211
123954599108101,5cyclictest1234939-21kworker/u8:3+flush-179:007:20:201
123954599108100,5cyclictest1234939-21kworker/u8:3+events_unbound07:10:201
123954599107100,5cyclictest1324891-21kworker/u8:3+flush-179:011:45:231
12395449910799,6cyclictest1310572-21kworker/u8:3+events_unbound10:55:000
12395449910798,6cyclictest1328083-21kworker/u8:0+flush-179:012:25:200
12395449910796,7cyclictest1304216-21kworker/u8:1+flush-179:010:45:270
12395459910695,8cyclictest1291495-21latency_hist09:50:011
12395449910699,5cyclictest1321783-21kworker/u8:2+events_unbound11:35:010
12395449910699,5cyclictest1246113-21kworker/u8:0+flush-179:007:30:250
12395449910698,6cyclictest1266882-21kworker/u8:3+flush-179:009:00:010
12395449910698,6cyclictest1266882-21kworker/u8:3+flush-179:009:00:000
12395449910598,5cyclictest1310572-21kworker/u8:3+flush-179:010:55:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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