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2026-09-22 - 14:12
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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 Tue Sep 22, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146334099154142,8cyclictest1213033-21systemd-journal00:04:001
146333799142124,12cyclictest1496909-21true20:54:590
146334099141124,14cyclictest510-21rs:main1
146333799135127,5cyclictest1485479-21latency_hist20:20:010
146333799135123,9cyclictest1213033-21systemd-journal19:50:010
146334099134119,12cyclictest1539032-21kworker/u8:2+events_unbound23:05:271
146333799132121,8cyclictest1513356-21kworker/u8:2+flush-179:022:00:230
146333799132121,8cyclictest1513356-21kworker/u8:2+flush-179:022:00:230
146334099130118,9cyclictest1466391-21latency_hist19:20:011
146333799128121,5cyclictest1487118-21kworker/u8:2+flush-179:020:30:240
146334099126113,10cyclictest1554931-21kworker/u8:0+flush-179:000:15:231
146334099123113,7cyclictest1479166-21kworker/u8:3+flush-179:020:10:151
146333799123114,7cyclictest1540866-21kworker/u8:0+flush-179:023:15:250
146334099121115,4cyclictest1534311-21kworker/u8:1+flush-179:023:05:001
146334099121113,6cyclictest1490246-21kworker/u8:0+flush-179:022:30:271
146333799120113,5cyclictest1524761-21kworker/u8:3+events_unbound22:30:000
146334099118111,4cyclictest1490246-21kworker/u8:0+flush-179:022:45:171
146334099118103,12cyclictest1213033-21systemd-journal20:05:001
146333799117103,9cyclictest1480751-21true20:04:590
146333799116109,5cyclictest1496925-21kworker/u8:3+flush-179:021:05:230
146334099112106,4cyclictest1516472-21kworker/u8:3+flush-179:021:55:231
146334099112106,4cyclictest1490246-21kworker/u8:0+flush-179:021:35:221
146334099112105,5cyclictest1475971-21kworker/u8:2+events_unbound19:55:221
146334099111104,5cyclictest1464840-21kworker/u8:0+flush-179:019:20:201
146334099111104,4cyclictest1487118-21kworker/u8:2+events_unbound20:35:261
14633379910999,7cyclictest1213033-21systemd-journal23:50:210
14633409910799,6cyclictest1554931-21kworker/u8:0+flush-179:000:30:181
14633409910780,23cyclictest1487083-21latency_hist20:25:021
146334099107102,4cyclictest1513356-21kworker/u8:2+events_unbound22:10:001
14633379910799,6cyclictest1474354-21latency_hist19:45:000
14633379910696,8cyclictest1500332-21latency_hist21:05:010
146333799106100,4cyclictest1540866-21kworker/u8:0+flush-179:023:20:170
14633379910598,5cyclictest1547235-21kworker/u8:3+flush-179:023:45:210
14633379910496,6cyclictest1518083-21latency_hist22:00:020
14633379910396,5cyclictest1554931-21kworker/u8:0+flush-179:000:15:250
14633409910296,4cyclictest1507619-21kworker/u8:1+flush-179:021:50:221
14633409910296,4cyclictest1468018-21kworker/u8:1+flush-179:019:25:181
14633409910093,5cyclictest1563203-21kworker/u8:1+flush-179:000:20:271
14633409910092,5cyclictest1547235-21kworker/u8:3+flush-179:023:45:211
14633409910088,9cyclictest1492120-21apt-get20:40:121
14633379910093,5cyclictest1468018-21kworker/u8:1+flush-179:019:25:210
14633379910090,7cyclictest1213033-21systemd-journal20:15:010
1463340999989,8cyclictest510-21rs:main1
1463337999992,5cyclictest1539032-21kworker/u8:2+flush-179:023:05:250
1463337999991,6cyclictest1496925-21kworker/u8:3+flush-179:021:20:220
1463337999991,5cyclictest1490246-21kworker/u8:0+events_unbound22:35:180
1463337999989,7cyclictest1490246-21kworker/u8:0+flush-179:022:25:010
1463340999892,4cyclictest1554931-21kworker/u8:0+flush-179:000:10:241
1463337999891,5cyclictest1563203-21kworker/u8:1+flush-179:000:20:260
1463340999791,4cyclictest1527931-21kworker/u8:2+flush-179:022:40:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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