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2026-07-01 - 04:55
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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 Wed Jul 01, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
549221166,16sleep00-21swapper/018:55:580
58119910844,36cyclictest352-21runrttasks22:02:181
58169910150,11cyclictest181rcu_preempt23:46:292
5806991012,45cyclictest15-21ksoftirqd/023:53:190
5816999932,20cyclictest5796-21cyclictest00:08:332
5816999932,20cyclictest5796-21cyclictest00:08:332
581699992,66cyclictest31976-21apt-get22:23:172
581199982,33cyclictest26180-21runrttasks23:06:401
5811999739,30cyclictest9128-21ntp_kernel_pll_22:38:281
580699973,53cyclictest15-21ksoftirqd/020:13:220
580699973,53cyclictest15-21ksoftirqd/020:13:220
5816999674,14cyclictest5418-21awk20:33:302
5811999632,35cyclictest19026-21ssh21:08:091
581199962,26cyclictest352-21runrttasks23:34:391
581199962,26cyclictest352-21runrttasks23:34:391
5816999546,36cyclictest22552-21cat22:08:002
5816999546,36cyclictest22552-21cat22:08:002
5816999546,12cyclictest0-21swapper/223:51:192
5811999513,49cyclictest0-21swapper/121:23:121
5811999450,37cyclictest300-21rs:main1
5811999450,37cyclictest300-21rs:main1
5811999429,41cyclictest0-21swapper/121:30:141
5811999429,41cyclictest0-21swapper/121:30:141
5816999352,11cyclictest181rcu_preempt23:53:312
581199933,84cyclictest0-21swapper/121:13:091
5806999365,18cyclictest11159-21latency_hist19:13:010
581199923,76cyclictest0-21swapper/119:43:111
5811999219,62cyclictest14764-21apt-get22:48:231
5811999219,62cyclictest14764-21apt-get22:48:231
5811999147,37cyclictest15978-21sh21:03:091
5816999058,8cyclictest181rcu_preempt19:08:202
5816999042,13cyclictest181rcu_preempt23:25:122
5816999042,13cyclictest181rcu_preempt23:25:122
581199904,73cyclictest0-21swapper/118:58:141
580699908,55cyclictest15-21ksoftirqd/019:25:360
5816998965,15cyclictest32208-21ssh23:16:452
5816998965,15cyclictest32208-21ssh23:16:452
5816998942,12cyclictest181rcu_preempt23:04:222
581199893,71cyclictest0-21swapper/120:53:121
5816998855,12cyclictest181rcu_preempt22:58:322
5816998845,11cyclictest181rcu_preempt21:30:082
5816998845,11cyclictest181rcu_preempt21:30:082
581199884,71cyclictest0-21swapper/120:03:081
581199884,71cyclictest0-21swapper/120:03:081
581199884,69cyclictest0-21swapper/120:33:091
581199883,77cyclictest28782-21ssh22:18:131
581199883,77cyclictest28782-21ssh22:18:131
581199883,74cyclictest0-21swapper/119:38:101
581199883,71cyclictest0-21swapper/120:38:131
581199882,76cyclictest31976-21apt-get22:23:191
5806998868,14cyclictest13229-21mailstats23:38:310
5806998862,19cyclictest24328-21latency_hist19:53:010
5806998858,21cyclictest6383-21latency_hist20:38:000
582399873,58cyclictest0-21swapper/322:23:243
5816998745,17cyclictest0-21swapper/222:01:192
5816998742,17cyclictest181rcu_preempt23:38:202
5811998764,17cyclictest23824-21grep23:03:021
581199874,70cyclictest0-21swapper/119:33:101
5816998652,11cyclictest181rcu_preempt23:28:142
5816998650,13cyclictest181rcu_preempt00:03:162
5816998644,8cyclictest181rcu_preempt22:57:022
581199863,70cyclictest0-21swapper/121:18:111
5806998665,15cyclictest277-21dbus-daemon21:17:580
5806998661,16cyclictest2374-21systemd-journal22:37:170
5816998561,16cyclictest26647-21latency_hist00:03:012
5816998561,16cyclictest26647-21latency_hist00:03:012
5816998549,10cyclictest181rcu_preempt19:23:262
5816998548,11cyclictest181rcu_preempt22:14:272
5816998546,14cyclictest181rcu_preempt19:58:212
5816998545,8cyclictest181rcu_preempt19:31:562
5816998537,10cyclictest181rcu_preempt19:23:012
5816998533,12cyclictest181rcu_preempt21:10:512
581199853,72cyclictest352-21runrttasks23:48:101
581199852,75cyclictest6354-21ssh00:23:121
5806998513,44cyclictest15-21ksoftirqd/021:48:130
5816998455,9cyclictest181rcu_preempt00:17:592
5816998446,11cyclictest181rcu_preempt00:18:272
5816998443,14cyclictest181rcu_preempt23:22:342
5816998440,17cyclictest181rcu_preempt22:33:252
5816998440,12cyclictest181rcu_preempt21:53:222
5816998440,12cyclictest181rcu_preempt21:53:222
5816998421,31cyclictest0-21swapper/200:26:082
581199844,67cyclictest0-21swapper/119:18:131
581199844,67cyclictest0-21swapper/119:18:131
581199843,66cyclictest0-21swapper/120:48:081
581199843,36cyclictest14091-21/usr/sbin/munin21:53:201
581199843,36cyclictest14091-21/usr/sbin/munin21:53:201
581199842,6cyclictest0-21swapper/122:33:141
581199842,37cyclictest723-21seq23:18:191
581199842,37cyclictest17752-21apt-get22:53:091
5806998463,13cyclictest5796-21cyclictest22:04:440
5806998463,13cyclictest5796-21cyclictest22:04:440
5806998418,41cyclictest0-21swapper/021:43:370
5816998354,8cyclictest181rcu_preempt22:38:352
5816998334,8cyclictest181rcu_preempt20:43:202
581199834,73cyclictest0-21swapper/121:48:131
581199833,68cyclictest0-21swapper/120:43:101
581199833,34cyclictest20523-21swap22:03:301
581199833,34cyclictest20523-21swap22:03:301
581199832,35cyclictest7244-21grep23:28:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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