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2026-04-19 - 00:58
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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 Sat Apr 18, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
86119911949,65cyclictest20724-21kworker/u19:1+events_unbound07:52:550
842721166,16sleep20-21swapper/207:02:432
86119911357,49cyclictest0-21swapper/007:18:310
8611991114,46cyclictest29267-21ssh11:13:090
8611991114,46cyclictest29267-21ssh11:13:090
2015021100,8sleep10-21swapper/110:57:581
2655321090,11sleep0161ktimers/011:08:180
86119910755,45cyclictest0-21swapper/007:03:280
86119910755,45cyclictest0-21swapper/007:03:280
8611991072,27cyclictest14495-21taskset09:53:300
8611991072,27cyclictest14495-21taskset09:53:300
86119910542,55cyclictest298-21in:imuxsock08:42:570
86119910451,46cyclictest0-21swapper/007:08:300
86119910330,8cyclictest0-21swapper/012:18:160
86119910330,8cyclictest0-21swapper/012:18:160
86119910255,37cyclictest0-21swapper/011:57:280
86119910236,55cyclictest0-21swapper/009:47:590
86119910138,56cyclictest0-21swapper/011:22:540
86119910137,57cyclictest0-21swapper/011:48:230
86119910137,57cyclictest0-21swapper/011:48:230
8611991012,27cyclictest12277-21ntpq11:38:230
86119910118,23cyclictest6949-21ssh11:28:530
86119910118,23cyclictest6949-21ssh11:28:530
86239910062,33cyclictest8603-21cyclictest10:28:312
86119910046,47cyclictest0-21swapper/007:38:130
86119910036,55cyclictest0-21swapper/010:47:580
8611991003,26cyclictest21719-21cat09:12:580
8611999945,46cyclictest0-21swapper/009:58:200
8611999936,53cyclictest0-21swapper/009:27:580
861199993,24cyclictest22607-21fschecks_time07:43:180
8611999838,53cyclictest0-21swapper/010:48:080
861199983,25cyclictest2807-21/usr/sbin/munin08:23:250
8611999747,44cyclictest0-21swapper/009:38:280
861199973,27cyclictest11806-21basename12:32:550
861199973,26cyclictest23687-21runrttasks11:58:120
861199973,26cyclictest23687-21runrttasks11:58:120
8611999729,60cyclictest0-21swapper/009:02:560
861199972,43cyclictest784-21ssh12:13:260
8611999716,25cyclictest10678-21runrttasks10:42:380
8611999716,25cyclictest10678-21runrttasks10:42:380
861199963,22cyclictest1607-21ssh10:27:210
8611999629,7cyclictest0-21swapper/009:17:570
8611999621,20cyclictest1742-21fschecks_count09:33:170
8611999538,50cyclictest0-21swapper/012:03:290
861199953,31cyclictest6355-21idleruntime08:33:170
861199953,25cyclictest15111-21/usr/sbin/munin11:43:210
8611999525,11cyclictest0-21swapper/011:27:580
8615999443,43cyclictest0-21swapper/112:13:311
8611999449,40cyclictest0-21swapper/007:53:210
8611999434,52cyclictest0-21swapper/011:33:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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