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2026-03-16 - 19:48
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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 rackbslot7.osadl.org (updated Mon Mar 16, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9424214811,48sleep29469-21sensors_temp07:00:512
8782212423,51sleep00-21swapper/007:00:240
102529910333,12cyclictest0-21swapper/111:30:111
102529910333,12cyclictest0-21swapper/111:30:111
102529910143,9cyclictest0-21swapper/107:45:291
10252991002,88cyclictest30947-21ssh11:15:251
10252991002,88cyclictest30947-21ssh11:15:251
10259999974,16cyclictest30336-21apt-get11:15:072
10252999836,12cyclictest0-21swapper/112:05:311
10252999836,12cyclictest0-21swapper/112:05:311
10252999835,13cyclictest0-21swapper/111:35:251
10252999835,13cyclictest0-21swapper/111:35:251
10252999829,23cyclictest277-21dbus-daemon07:10:091
1025299973,38cyclictest22325-21ntp_offset11:00:371
1025299963,31cyclictest0-21swapper/110:02:211
10246999556,30cyclictest0-21swapper/007:10:420
93692938,56sleep19422-21mailstats07:00:501
1025299934,35cyclictest30073-21/usr/sbin/munin10:20:421
10252999336,10cyclictest0-21swapper/110:15:311
1025299923,68cyclictest352-21runrttasks10:25:301
1025299923,42cyclictest17002-21wc11:45:391
10246999244,8cyclictest181rcu_preempt08:10:220
1025299912,40cyclictest7833-21latency11:30:321
10259999013,67cyclictest509-21apt-get09:30:252
10246999013,67cyclictest904-21modprobe10:25:310
10259998958,23cyclictest8629-21sh10:37:492
10252998966,17cyclictest6537-21sh09:40:291
10259998813,30cyclictest1093-21sh12:14:032
10259998813,30cyclictest1093-21sh12:14:032
10252998839,15cyclictest4241-21kworker/u17:1-rpciod09:05:101
1025999873,74cyclictest30986-21sh11:15:312
1025999873,74cyclictest30986-21sh11:15:312
1025299876,37cyclictest13512-21ssh12:35:091
10259998658,21cyclictest13698-21latency_hist12:35:102
10252998668,12cyclictest24137-21sh09:16:211
10246998644,12cyclictest181rcu_preempt07:45:360
10259998569,12cyclictest10236-21cyclictest11:55:452
10259998569,12cyclictest10236-21cyclictest11:55:452
10259998568,10cyclictest11462-21unixbench_singl11:35:462
10259998568,10cyclictest11462-21unixbench_singl11:35:462
10259998563,16cyclictest25794-21sh11:05:462
10252998570,7cyclictest0-21swapper/112:20:231
10246998563,16cyclictest1466-21cpu11:20:240
10246998461,14cyclictest6912-21rm11:29:440
10246998461,14cyclictest6912-21rm11:29:440
10246998459,17cyclictest13263-21latency_hist11:40:110
10246998459,17cyclictest13263-21latency_hist11:40:110
10259998363,13cyclictest10236-21cyclictest08:17:152
10259998355,19cyclictest24750-21sh10:10:392
10259998313,24cyclictest29387-21ntp_states08:00:372
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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