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2026-05-09 - 12:24
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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 rack6slot0.osadl.org (updated Sat May 09, 2026 01:01:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2751199254242,10cyclictest13018-21kworker/u81:3+events_unbound22:25:1015
2751199254242,10cyclictest13018-21kworker/u81:3+events_unbound22:25:1015
27511992471,243cyclictest755-21systemd-journal23:04:0915
27511992471,243cyclictest755-21systemd-journal23:04:0915
27511992470,3cyclictest1442-21gdbus21:51:5715
27511992470,3cyclictest1442-21gdbus21:51:5615
27511992470,3cyclictest1442-21gdbus21:51:5615
27511992451,240cyclictest4398-21qemu-system-x8622:40:2415
27511992451,240cyclictest4398-21qemu-system-x8622:40:2415
27511992441,232cyclictest0-21swapper/2221:13:5615
27511992441,232cyclictest0-21swapper/2221:13:5615
27511992441,232cyclictest0-21swapper/2221:13:5515
27511992411,4cyclictest755-21systemd-journal21:40:2015
27511992411,4cyclictest755-21systemd-journal21:40:2015
27511992411,4cyclictest755-21systemd-journal21:40:2015
27511992391,5cyclictest28908-21bash22:36:5415
27511992391,5cyclictest28908-21bash22:36:5415
27511992361,4cyclictest35865-21sshd00:31:2915
27511992361,4cyclictest35865-21sshd00:31:2815
27511992341,3cyclictest0-21swapper/2221:20:0115
27511992341,3cyclictest0-21swapper/2221:20:0115
27511992312,223cyclictest3543-21CPU15
27511992312,223cyclictest3543-21CPU15
27511992311,227cyclictest0-21swapper/2223:31:2415
27511992311,227cyclictest0-21swapper/2223:31:2315
27511992281,2cyclictest0-21swapper/2200:05:1315
27511992281,2cyclictest0-21swapper/2200:05:1315
27511992270,3cyclictest39926-21systemd-cgroups23:57:4515
27511992270,3cyclictest39926-21systemd-cgroups23:57:4515
27511992270,3cyclictest39926-21systemd-cgroups23:57:4415
27511992261,18cyclictest755-21systemd-journal22:20:2115
27511992261,18cyclictest755-21systemd-journal22:20:2115
27511992241,3cyclictest0-21swapper/2221:55:0915
27511992241,3cyclictest0-21swapper/2221:55:0915
27511992231,2cyclictest0-21swapper/2223:41:1815
27511992231,2cyclictest0-21swapper/2223:41:1815
27511992230,2cyclictest30800-21sshd23:11:0415
27511992230,2cyclictest30800-21sshd23:11:0415
27511992230,2cyclictest30800-21sshd23:11:0415
27511992221,3cyclictest0-21swapper/2219:55:2215
27511992221,3cyclictest0-21swapper/2219:55:2215
27511992212,6cyclictest3544-21CPU15
27511992204,212cyclictest3535-21qemu-system-x8600:00:3515
27511992204,212cyclictest3535-21qemu-system-x8600:00:3415
27511992192,211cyclictest2456-21CPU15
27511992192,211cyclictest2456-21CPU15
27511992191,2cyclictest0-21swapper/2221:39:4915
27511992191,2cyclictest0-21swapper/2221:39:4915
27511992191,2cyclictest0-21swapper/2221:31:3215
27511992191,2cyclictest0-21swapper/2221:31:3215
27511992191,2cyclictest0-21swapper/2221:31:3215
27511992180,2cyclictest0-21swapper/2222:08:1515
27511992180,2cyclictest0-21swapper/2222:08:1515
27511992180,2cyclictest0-21swapper/2222:08:1515
27511992172,209cyclictest37267-21CPU15
27511992172,209cyclictest37267-21CPU15
27511992171,11cyclictest3535-21qemu-system-x8623:24:3815
27511992171,11cyclictest3535-21qemu-system-x8623:24:3815
27511992141,4cyclictest1367-21dbus-daemon00:20:1215
27511992141,4cyclictest1367-21dbus-daemon00:20:1115
27511992131,2cyclictest0-21swapper/2222:59:0015
27511992131,2cyclictest0-21swapper/2222:59:0015
27511992131,2cyclictest0-21swapper/2222:59:0015
27511992121,207cyclictest0-21swapper/2200:37:2415
27511992121,207cyclictest0-21swapper/2200:37:2315
27511992120,2cyclictest0-21swapper/2222:31:1215
27511992120,2cyclictest0-21swapper/2222:31:1215
27511992120,2cyclictest0-21swapper/2222:03:3715
27511992120,2cyclictest0-21swapper/2222:03:3615
27511992091,2cyclictest0-21swapper/2221:24:4815
27511992091,2cyclictest0-21swapper/2221:24:4815
27511992080,2cyclictest0-21swapper/2222:15:5915
27511992080,2cyclictest0-21swapper/2222:15:5915
27511992080,193cyclictest0-21swapper/2220:20:0015
27511992080,193cyclictest0-21swapper/2220:20:0015
27511992061,5cyclictest35085-21sshd23:19:3315
27511992061,5cyclictest35085-21sshd23:19:3215
27511992020,2cyclictest0-21swapper/2221:25:1915
27511992020,2cyclictest0-21swapper/2221:25:1815
27511992011,2cyclictest0-21swapper/2223:51:2915
27511992011,2cyclictest0-21swapper/2223:51:2915
27511992005,188cyclictest0-21swapper/2223:26:5515
27511992005,188cyclictest0-21swapper/2223:26:5415
27511992005,188cyclictest0-21swapper/2223:26:5415
27511992001,3cyclictest0-21swapper/2223:48:5415
27511992001,3cyclictest0-21swapper/2223:48:5415
27511992001,194cyclictest0-21swapper/2220:45:1115
27511991981,2cyclictest0-21swapper/2221:47:1115
27511991981,2cyclictest0-21swapper/2221:47:1115
27511991981,2cyclictest0-21swapper/2221:47:1115
27511991954,182cyclictest2466-21CPU15
27511991954,182cyclictest2466-21CPU15
27511991942,4cyclictest37270-21CPU15
27511991942,4cyclictest37270-21CPU15
27511991941,3cyclictest0-21swapper/2222:10:5315
27511991941,3cyclictest0-21swapper/2222:10:5215
27511991925,176cyclictest0-21swapper/2200:16:4315
27511991925,176cyclictest0-21swapper/2200:16:4215
27511991912,3cyclictest3541-21CPU15
27511991912,3cyclictest3541-21CPU15
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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