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2026-07-27 - 19:21
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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 Jul 27, 2026 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2318521390,5sleep017558-1kworker/0:2H+kblockd06:56:140
23139991246,111cyclictest10371-21apt-get11:56:250
231399912036,74cyclictest0-21swapper/010:06:130
23139991195,109cyclictest0-21swapper/011:11:300
23139991195,109cyclictest0-21swapper/011:11:300
231399911632,78cyclictest0-21swapper/009:12:130
231399911632,78cyclictest0-21swapper/009:12:130
2158921127,17sleep10-21swapper/106:52:001
231399911121,52cyclictest5553-21rm10:55:170
231399911121,52cyclictest5553-21rm10:55:170
231399910854,48cyclictest30601-21latency_hist08:56:120
23139991073,95cyclictest0-21swapper/009:46:220
231399910655,45cyclictest31334-21sendmail_mailqu11:36:450
231399910655,45cyclictest31334-21sendmail_mailqu11:36:450
231499910553,14cyclictest1389-21cut09:01:111
23139991053,63cyclictest26797-21cron07:06:090
231399910438,50cyclictest4775-21ssh09:06:260
23139991043,84cyclictest23428-21apt-get06:56:450
23139991032,66cyclictest8955-21rm11:00:470
231399910317,69cyclictest0-21swapper/011:06:480
231399910317,69cyclictest0-21swapper/011:06:480
23139991024,86cyclictest27627-21apt-get11:31:220
231399910237,57cyclictest0-21swapper/007:31:090
231399910220,52cyclictest0-21swapper/009:32:260
231399910218,55cyclictest12048-21sh11:06:030
23139991013,67cyclictest10119-21apt-config11:56:120
23139991009,77cyclictest4187-21ssh11:46:240
231399910040,55cyclictest23116-21cyclictest10:31:310
231399910017,66cyclictest4172-21ssh09:05:360
2313999984,61cyclictest22747-21grep08:31:340
23139999835,54cyclictest0-21swapper/012:01:410
23139999835,54cyclictest0-21swapper/012:01:410
2313999982,59cyclictest23805-21taskset12:17:450
23139999734,53cyclictest0-21swapper/008:41:360
23139999631,55cyclictest0-21swapper/010:01:120
23139999625,63cyclictest0-21swapper/010:21:470
23159999545,43cyclictest0-21swapper/209:26:402
2313999953,86cyclictest0-21swapper/011:26:230
23139999537,50cyclictest0-21swapper/009:16:360
23139999534,54cyclictest0-21swapper/010:41:110
2313999952,65cyclictest10232-21ssh10:07:580
2313999952,65cyclictest10232-21ssh10:07:580
2313999952,59cyclictest0-21swapper/007:16:290
2313999952,59cyclictest0-21swapper/007:16:290
23159999428,9cyclictest0-21swapper/207:46:202
2313999943,55cyclictest0-21swapper/007:36:350
23139999435,51cyclictest0-21swapper/009:51:470
23139999435,51cyclictest0-21swapper/009:51:470
23139999327,56cyclictest0-21swapper/008:01:130
2285329313,55sleep222869-21cron06:56:092
2315999924,37cyclictest24676-21ssh11:26:262
2315999923,33cyclictest7627-21latency_hist07:46:132
23159999225,25cyclictest12993-21seq09:19:272
23159999219,27cyclictest277-21dbus-daemon11:16:102
23159999219,27cyclictest277-21dbus-daemon11:16:102
23139999263,20cyclictest28644-21latency_hist07:11:120
23139999263,20cyclictest28644-21latency_hist07:11:120
23139999239,46cyclictest300-21rs:main0
2313999923,52cyclictest0-21swapper/010:41:390
23139999212,52cyclictest19972-21ntp_states12:11:380
23159999147,37cyclictest0-21swapper/210:06:092
2315999913,33cyclictest9178-21latency_hist11:01:112
23159999130,53cyclictest0-21swapper/211:26:122
23159999130,53cyclictest0-21swapper/211:26:122
2313999913,61cyclictest20918-21expr10:26:310
2313999913,61cyclictest20918-21expr10:26:310
23159999039,44cyclictest0-21swapper/210:41:112
2315999903,42cyclictest10390-21ssh11:56:242
23159999027,55cyclictest0-21swapper/207:56:402
23139999031,49cyclictest0-21swapper/007:31:380
2315999894,34cyclictest19691-21fschecks_time12:11:322
23159998941,40cyclictest0-21swapper/210:06:252
23159998941,40cyclictest0-21swapper/210:06:252
2315999893,38cyclictest1987-21switchtime11:41:472
2313999893,77cyclictest0-21swapper/011:16:210
23139998931,52cyclictest0-21swapper/010:21:120
23139998925,58cyclictest0-21swapper/009:42:080
2315999884,40cyclictest28692-21/usr/sbin/munin07:11:282
2315999884,40cyclictest28692-21/usr/sbin/munin07:11:282
23159998840,41cyclictest0-21swapper/208:21:442
23159998840,41cyclictest0-21swapper/208:21:442
23159998835,43cyclictest0-21swapper/210:56:122
23159998835,43cyclictest0-21swapper/210:56:122
23159998830,7cyclictest0-21swapper/209:21:422
23159998826,12cyclictest0-21swapper/208:31:352
2315999882,28cyclictest30517-21find10:41:462
2313999883,77cyclictest15671-21ssh09:23:350
2313999882,58cyclictest0-21swapper/008:21:200
2313999882,58cyclictest0-21swapper/008:21:200
2313999882,55cyclictest32325-21latency07:21:370
23159998772,8cyclictest0-21swapper/208:57:422
2315999874,34cyclictest24756-21seq09:38:092
23159998738,42cyclictest0-21swapper/209:01:362
23159998734,46cyclictest0-21swapper/207:06:462
23159998734,46cyclictest0-21swapper/207:06:462
2315999873,38cyclictest14410-21grep12:01:482
2315999873,38cyclictest14410-21grep12:01:482
2315999873,35cyclictest3506-21wc07:31:482
2315999873,33cyclictest3096-21latency_hist10:51:132
23159998727,8cyclictest0-21swapper/208:17:292
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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