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2026-03-18 - 23:18
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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 100 highest latencies:
System rackbslot7.osadl.org (updated Wed Mar 18, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6877212515,76sleep16894-21apt-key07:05:041
6877212515,76sleep16894-21apt-key07:05:041
7034991143,50cyclictest352-21runrttasks12:35:010
7034991133,29cyclictest28380-21latency_hist12:10:030
7034991133,29cyclictest28380-21latency_hist12:10:030
70349911153,7cyclictest0-21swapper/012:05:260
70349911153,7cyclictest0-21swapper/012:05:260
7034991094,54cyclictest352-21runrttasks09:01:230
7034991094,54cyclictest352-21runrttasks09:01:230
70659910859,41cyclictest0-21swapper/211:20:022
70659910859,41cyclictest0-21swapper/211:20:022
70659910857,43cyclictest0-21swapper/209:45:342
70579910864,39cyclictest7015-21cyclictest11:35:331
70659910757,43cyclictest14721-21diskmemload12:02:242
70659910757,43cyclictest14721-21diskmemload12:02:242
70349910554,9cyclictest7015-21cyclictest11:37:480
70659910448,49cyclictest24977-21sh10:15:212
70659910436,14cyclictest0-21swapper/210:30:352
70659910054,38cyclictest0-21swapper/208:05:252
7034991003,44cyclictest352-21runrttasks08:36:110
706599993,38cyclictest10288-21grep07:10:392
7065999916,33cyclictest21621-21latency_hist10:10:032
7065999747,44cyclictest5247-21apt-key12:25:032
7065999732,12cyclictest0-21swapper/212:25:092
7065999732,12cyclictest0-21swapper/212:25:092
706599963,38cyclictest20124-21ntp_kernel_err11:55:272
706599963,38cyclictest20124-21ntp_kernel_err11:55:272
7057999541,46cyclictest9658-21apt-key08:50:041
705799953,80cyclictest19595-21sshd11:55:151
705799953,80cyclictest19595-21sshd11:55:151
7057999527,43cyclictest0-21swapper/111:03:361
7065999436,11cyclictest0-21swapper/207:50:012
706599943,38cyclictest22729-21sshd07:50:152
705799943,67cyclictest25246-21apt-get11:10:191
609629413,54sleep06145-21ls07:00:430
609629413,54sleep06145-21ls07:00:430
137492940,7sleep10-21swapper/109:01:271
137492940,7sleep10-21swapper/109:01:271
706599933,52cyclictest13643-21runrttasks09:01:232
706599933,52cyclictest13643-21runrttasks09:01:232
7065999335,11cyclictest0-21swapper/211:11:322
706599933,41cyclictest13667-21cpuspeed11:45:142
7065999334,13cyclictest0-21swapper/211:05:212
7057999366,18cyclictest277-21dbus-daemon11:10:011
7057999361,22cyclictest27096-21sh09:25:151
7034999375,13cyclictest32757-21/usr/sbin/munin09:35:020
706599923,31cyclictest24582-21grep07:55:212
7065999140,11cyclictest24548-21latency09:20:262
7065999134,11cyclictest0-21swapper/210:25:242
706599904,35cyclictest18933-21latency_hist11:00:032
706599904,35cyclictest18933-21latency_hist11:00:032
7057999042,38cyclictest0-21swapper/108:10:361
7057999042,38cyclictest0-21swapper/108:10:361
7065998972,10cyclictest14721-21diskmemload10:40:212
7065998969,14cyclictest7015-21cyclictest09:25:192
706599893,37cyclictest9411-21apt-key08:50:012
706599892,38cyclictest11372-21latency_hist08:55:022
7034998965,17cyclictest9658-21apt-key08:50:040
7065998836,14cyclictest10291-21latency_hist11:40:022
706599883,36cyclictest11673-21switchtime07:15:332
7057998846,35cyclictest22221-21latency_hist07:50:031
705799883,63cyclictest7296-21apt-get07:05:191
7057998823,37cyclictest14721-21diskmemload09:19:401
7065998754,9cyclictest181rcu_preempt12:30:362
706599863,38cyclictest28687-21/usr/sbin/munin12:10:302
706599863,38cyclictest28687-21/usr/sbin/munin12:10:302
705799863,67cyclictest0-21swapper/108:20:121
706599853,37cyclictest15156-21cstates09:05:152
7057998563,15cyclictest200-21systemd-journal12:18:151
7057998539,38cyclictest0-21swapper/112:20:381
706599843,42cyclictest4759-21ssh10:35:282
7057998469,9cyclictest19235-21latency_hist11:54:591
705799843,66cyclictest0-21swapper/108:00:091
7034998412,26cyclictest58-21kcompactd007:50:230
110762840,6sleep111049-21ssh12:34:581
7065998362,11cyclictest0-21swapper/208:55:282
7057998353,21cyclictest7792-21sh10:40:301
7057998335,41cyclictest0-21swapper/108:50:101
7034998364,11cyclictest0-21swapper/008:34:590
7065998259,14cyclictest14084-21latency_hist07:25:022
7065998259,14cyclictest14084-21latency_hist07:25:022
7065998162,14cyclictest21880-21latency_hist11:05:022
706599813,38cyclictest352-21runrttasks07:43:242
706599813,38cyclictest352-21runrttasks07:43:242
706599813,37cyclictest4529-21modprobe08:34:592
705799812,67cyclictest0-21swapper/109:35:131
705799812,67cyclictest0-21swapper/109:35:131
7034998128,35cyclictest1902-21rm10:30:320
7065998032,24cyclictest0-21swapper/211:31:372
7065998032,24cyclictest0-21swapper/211:31:372
7057998041,34cyclictest0-21swapper/110:15:351
7057998040,34cyclictest1889-21sendmail_mailqu10:30:321
705799793,71cyclictest0-21swapper/107:20:151
705799793,71cyclictest0-21swapper/107:20:151
705799792,67cyclictest0-21swapper/111:40:121
7034997959,14cyclictest25019-21apt-key11:10:040
7034997950,14cyclictest14864-21ssh11:46:070
7065997861,11cyclictest7015-21cyclictest07:35:142
7065997861,11cyclictest7015-21cyclictest07:35:142
7065997859,9cyclictest0-21swapper/210:10:352
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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