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2026-04-27 - 04:17
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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 Mon Apr 27, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
52289912859,62cyclictest297-21systemd-logind00:17:220
52289912655,63cyclictest298-21in:imuxsock23:12:210
52289912158,55cyclictest0-21swapper/019:07:350
52289912158,55cyclictest0-21swapper/019:07:350
52289912042,12cyclictest0-21swapper/021:37:590
52289911847,9cyclictest0-21swapper/022:42:430
52289911847,9cyclictest0-21swapper/022:42:430
52289911741,12cyclictest0-21swapper/021:32:540
52289911741,12cyclictest0-21swapper/021:32:540
5241991165,95cyclictest25205-21apt-get22:17:371
52509911259,45cyclictest0-21swapper/220:07:492
52509911052,11cyclictest0-21swapper/200:27:382
5241991103,73cyclictest16051-21sh21:07:511
5228991104,33cyclictest352-21runrttasks00:05:210
5228991104,33cyclictest30352-21latency_hist00:12:240
5241991098,90cyclictest3264-21apt-get23:27:391
5241991093,84cyclictest1290-21kworker/u19:3+ext4-rsv-conversion00:18:211
52509910853,8cyclictest0-21swapper/220:17:512
52509910841,19cyclictest0-21swapper/219:37:222
52509910457,40cyclictest567-21kworker/u17:3-xprtiod22:57:482
52509910444,12cyclictest0-21swapper/223:37:242
52509910444,12cyclictest0-21swapper/223:37:242
52419910486,10cyclictest0-21swapper/122:47:561
484821037,79sleep00-21swapper/018:59:180
52509910248,12cyclictest0-21swapper/221:27:492
5241991003,71cyclictest22801-21fschecks_time19:53:401
39262989,58sleep13956-21fschecks_count18:57:491
5250999749,10cyclictest298-21in:imuxsock20:27:212
5228999758,8cyclictest181rcu_preempt22:02:370
5228999758,8cyclictest181rcu_preempt22:02:370
5228999667,20cyclictest28637-21latency_hist22:22:240
5228999574,15cyclictest27128-21latency_hist20:07:230
5228999574,15cyclictest27128-21latency_hist20:07:230
5250999357,8cyclictest181rcu_preempt22:02:482
5250999357,8cyclictest181rcu_preempt22:02:482
5228999378,9cyclictest6143-21apt-key23:32:230
524199928,58cyclictest18168-21munin-run23:52:211
5250999170,10cyclictest0-21swapper/219:47:252
5250999170,10cyclictest0-21swapper/219:47:252
5228999167,19cyclictest5219-21cyclictest23:02:440
5250999070,10cyclictest0-21swapper/221:57:242
5250999070,10cyclictest0-21swapper/221:57:242
5250998868,9cyclictest0-21swapper/219:02:262
5250998767,10cyclictest0-21swapper/221:09:132
5250998766,11cyclictest0-21swapper/200:22:452
5250998766,11cyclictest0-21swapper/200:22:452
5228998758,13cyclictest181rcu_preempt19:12:330
5241998610,53cyclictest6526-21apt-get23:32:381
5241998610,53cyclictest6526-21apt-get23:32:381
5250998567,12cyclictest19676-21snmpd21:48:422
5250998539,11cyclictest181rcu_preempt23:57:352
5228998570,8cyclictest0-21swapper/022:02:250
5250998430,12cyclictest181rcu_preempt22:51:042
5228998463,10cyclictest0-21swapper/023:47:230
5228998463,10cyclictest0-21swapper/023:47:230
5228998460,16cyclictest5128-21latency_hist22:37:240
5241998362,13cyclictest15484-21cron19:32:211
5241998361,15cyclictest5219-21cyclictest23:47:251
5241998361,15cyclictest5219-21cyclictest23:47:251
5228998364,10cyclictest0-21swapper/020:27:530
5241998261,14cyclictest0-21swapper/119:02:431
5228998266,9cyclictest0-21swapper/021:22:200
5228998266,9cyclictest0-21swapper/021:22:200
5228998249,26cyclictest0-21swapper/023:17:240
5228998249,26cyclictest0-21swapper/023:17:240
151072820,8sleep30-21swapper/319:27:583
5250998167,8cyclictest0-21swapper/200:08:002
5250998165,10cyclictest5094-21ntp_offset21:42:522
5250998163,13cyclictest5219-21cyclictest19:57:432
5250998154,21cyclictest4163-21sh21:42:212
5241998133,35cyclictest17073-21sshd22:57:061
5241998123,35cyclictest0-21swapper/123:08:571
5228998162,14cyclictest26684-21kworker/u19:1+events_unbound21:32:220
5228998160,9cyclictest181rcu_preempt19:47:580
5250998055,17cyclictest0-21swapper/219:52:252
5250998052,11cyclictest181rcu_preempt19:27:372
5228998056,18cyclictest2374-21systemd-journal20:12:230
5250997957,12cyclictest0-21swapper/219:22:242
5250997956,11cyclictest0-21swapper/220:12:572
5241997928,18cyclictest12390-21diskmemload22:40:321
5241997928,18cyclictest12390-21diskmemload22:40:321
5228997965,7cyclictest0-21swapper/022:07:370
5228997961,11cyclictest25545-21apt-key22:17:250
5228997961,11cyclictest25545-21apt-key22:17:250
5228997958,14cyclictest21652-21sh21:17:210
5250997864,8cyclictest0-21swapper/220:52:572
5250997863,9cyclictest0-21swapper/200:02:542
5250997849,7cyclictest181rcu_preempt23:38:432
5250997844,25cyclictest23824-21modprobe19:57:222
5250997844,11cyclictest5219-21cyclictest21:06:562
5241997863,10cyclictest5219-21cyclictest20:42:411
5241997857,13cyclictest1-21systemd19:12:221
5241997857,13cyclictest1-21systemd19:12:221
5250997760,10cyclictest0-21swapper/219:22:452
5250997758,11cyclictest0-21swapper/220:42:452
5250997723,8cyclictest0-21swapper/220:27:432
5241997753,16cyclictest5219-21cyclictest00:31:321
5228997763,7cyclictest0-21swapper/020:52:570
5228997734,26cyclictest9981-21rm21:51:530
5250997659,10cyclictest0-21swapper/219:08:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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