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2026-08-30 - 00:59
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Sat Aug 29, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28527992118,2cyclictest6814-21invoke-rc.d08:25:001
2852899204,1cyclictest20271-21sort10:40:182
2852899204,15cyclictest0-21swapper/210:10:132
2852799200,18cyclictest16780-21fschecks_count07:45:141
2852699201,18cyclictest28111-21fschecks_time10:55:150
2852899193,15cyclictest28-21ksoftirqd/210:59:172
2852899192,15cyclictest0-21swapper/207:54:452
28528991916,2cyclictest19148-21cpuspeed_turbos08:45:142
28528991914,3cyclictest0-21swapper/208:33:462
28528991914,2cyclictest4035-21H222:10:212
2852899190,18cyclictest0-21swapper/211:52:262
2852899190,18cyclictest0-21swapper/209:30:002
2852899190,16cyclictest3989-21H222:10:212
2852899190,16cyclictest3985-21H222:10:212
2852899190,16cyclictest3981-21H222:10:212
28527991914,3cyclictest3987-21H222:10:211
2852799191,15cyclictest12218-21tr09:30:121
2852799190,2cyclictest3983-21H222:10:211
2852799190,16cyclictest3989-21H222:10:211
2852799190,16cyclictest3976-21H222:10:211
2852799190,16cyclictest3976-21H222:10:211
28526991917,1cyclictest0-21swapper/008:03:240
2852699190,2cyclictest3985-21H222:10:210
2852699190,17cyclictest3981-21H222:10:210
2852699190,16cyclictest3983-21H222:10:210
2852699190,16cyclictest3983-21H222:10:210
2852699190,16cyclictest3981-21H222:10:210
2852699190,16cyclictest3979-21H222:10:210
2852899183,1cyclictest0-21swapper/211:11:332
2852899182,15cyclictest3987-21H222:10:212
28528991816,1cyclictest0-21swapper/211:18:142
28528991816,1cyclictest0-21swapper/208:20:162
28528991815,2cyclictest8040-21cut10:20:002
28528991814,3cyclictest1515-21lxd11:30:442
2852899181,16cyclictest3984-21H222:10:212
2852899181,16cyclictest3750-21taskset08:18:502
2852899181,15cyclictest0-21swapper/207:19:462
2852899180,3cyclictest3989-21H222:10:212
2852899180,2cyclictest3987-21H222:10:212
2852899180,2cyclictest3985-21H222:10:212
2852899180,2cyclictest3976-21H222:10:212
2852899180,2cyclictest10480-21latency_hist12:20:012
2852899180,17cyclictest870-21systemd-logind11:36:512
2852899180,17cyclictest4099-21H222:10:212
2852899180,17cyclictest4035-21H222:10:212
2852899180,16cyclictest9408-21lxd10:06:442
2852899180,16cyclictest4035-21H222:10:212
2852899180,15cyclictest3991-21H222:10:212
2852899180,15cyclictest3976-21H222:10:212
2852799182,15cyclictest13169-21smartctl11:25:141
2852799182,15cyclictest0-21swapper/110:14:371
2852799182,15cyclictest0-21swapper/109:15:151
28527991815,2cyclictest3976-21H222:10:211
28527991814,3cyclictest3987-21H222:10:211
28527991814,3cyclictest3983-21H222:10:211
28527991814,3cyclictest3981-21H222:10:211
2852799181,15cyclictest12286-21taskset08:33:061
2852799180,2cyclictest3991-21H222:10:211
2852799180,2cyclictest3989-21H222:10:211
2852799180,2cyclictest3979-21H222:10:211
2852799180,17cyclictest3981-21H222:10:211
2852799180,17cyclictest3979-21H222:10:211
2852799180,17cyclictest1523-21lxd11:30:431
2852799180,15cyclictest3989-21H222:10:211
2852699182,15cyclictest9-21ksoftirqd/008:09:300
2852699182,15cyclictest0-21swapper/009:46:000
28526991816,1cyclictest15208-21mailstats10:30:210
2852699181,16cyclictest24261-21timerwakeupswit07:55:230
2852699180,2cyclictest4099-21H222:10:210
2852699180,2cyclictest4099-21H222:10:210
2852699180,2cyclictest3976-21H222:10:210
2852699180,17cyclictest4035-21H222:10:210
2852699180,17cyclictest3991-21H222:10:210
2852699180,17cyclictest3981-21H222:10:210
2852699180,17cyclictest3976-21H222:10:210
2852699180,16cyclictest4367-21cpuspeed_turbos11:10:150
2852699180,15cyclictest3989-21H222:10:210
2852699180,15cyclictest3985-21H222:10:210
28528991714,2cyclictest9119-21grep07:30:172
28528991714,2cyclictest4099-21H222:10:212
28528991714,2cyclictest1289-21cstates11:05:122
28528991714,2cyclictest11138-21grep10:25:152
2852899170,2cyclictest9223-21/usr/sbin/munin10:20:192
2852899170,2cyclictest9223-21/usr/sbin/munin10:20:182
2852899170,2cyclictest870-21systemd-logind09:06:512
2852899170,2cyclictest7103-21cstates09:20:132
2852899170,2cyclictest4693-21if_enp1s009:15:172
2852899170,2cyclictest3991-21H222:10:212
2852899170,2cyclictest3989-21H222:10:212
2852899170,2cyclictest3989-21H222:10:212
2852899170,2cyclictest3087-21postgres07:14:482
2852899170,2cyclictest18041-21needreboot12:30:192
2852899170,2cyclictest12977-21cpuspeed_turbos08:35:162
2852899170,2cyclictest12977-21cpuspeed_turbos08:35:152
2852899170,1cyclictest3985-21H222:10:212
2852899170,1cyclictest0-21swapper/209:00:142
2852899170,16cyclictest8708-21awk08:25:202
2852899170,16cyclictest5679-21cut07:25:172
2852899170,16cyclictest3987-21H222:10:212
2852899170,16cyclictest3979-21H222:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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