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2026-04-18 - 19:41
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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 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
861199943,28cyclictest5269-21cstates10:33:120
8611999423,8cyclictest0-21swapper/008:22:550
861199942,22cyclictest28943-21perl10:18:170
795829412,51sleep18036-21grep06:58:431
8611999339,49cyclictest16370-21kworker/u17:4+rpciod10:28:330
861199933,37cyclictest27051-21ssh09:21:110
861199933,37cyclictest27051-21ssh09:21:110
861199933,28cyclictest20383-21/usr/sbin/munin10:58:130
861199933,25cyclictest23369-21/usr/sbin/munin10:08:290
8623999245,41cyclictest2827-21idleruntime-cro12:17:552
861199923,29cyclictest25009-21ssh11:05:210
861199923,29cyclictest25009-21ssh11:05:210
8611999227,8cyclictest0-21swapper/012:09:540
8611999227,8cyclictest0-21swapper/008:08:150
8611999227,8cyclictest0-21swapper/008:08:150
8611999226,10cyclictest0-21swapper/012:23:240
8611999224,8cyclictest0-21swapper/008:52:580
8611999224,8cyclictest0-21swapper/007:13:330
8623999152,32cyclictest24851-21kworker/u17:1-nfsiod12:18:302
8623999152,32cyclictest24851-21kworker/u17:1-nfsiod12:18:302
8623999149,36cyclictest0-21swapper/211:28:202
8623999149,36cyclictest0-21swapper/211:28:202
8611999135,49cyclictest0-21swapper/010:53:120
861199913,24cyclictest16872-21/usr/sbin/munin07:23:580
861199913,23cyclictest25639-21/usr/sbin/munin10:13:320
861199913,23cyclictest25639-21/usr/sbin/munin10:13:320
861199913,23cyclictest16378-21/usr/sbin/munin09:03:260
8611999125,7cyclictest0-21swapper/009:28:340
861199912,26cyclictest20809-21taskset10:03:390
861199912,26cyclictest20809-21taskset10:03:390
8623999053,30cyclictest0-21swapper/210:53:322
8615999044,39cyclictest0-21swapper/112:31:381
8615999029,8cyclictest0-21swapper/110:32:551
861199903,25cyclictest32268-21fschecks_count08:13:160
8623998949,33cyclictest0-21swapper/209:45:302
8623998939,44cyclictest32550-21fschecks_time11:18:182
8623998938,44cyclictest5939-21latency_hist08:32:582
8615998932,50cyclictest0-21swapper/111:18:261
861199893,26cyclictest29032-21fschecks_count08:03:170
861199892,24cyclictest11210-21/usr/sbin/munin09:48:220
8611998922,10cyclictest161ktimers/007:28:110
8611998917,21cyclictest19319-21fschecks_count07:33:180
8611998915,14cyclictest0-21swapper/008:53:310
8623998850,31cyclictest0-21swapper/210:23:312
8623998850,31cyclictest0-21swapper/208:08:322
8623998850,31cyclictest0-21swapper/208:08:322
8623998838,44cyclictest0-21swapper/211:23:202
8615998847,34cyclictest29431-21df_inode11:13:131
8615998847,34cyclictest29431-21df_inode11:13:131
8615998847,34cyclictest0-21swapper/111:23:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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