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2026-08-16 - 19:09
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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 rack3slot6.osadl.org (updated Sun Aug 16, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
524899967,71cyclictest0-21swapper/010:05:150
281302960,6chrt28132-21if_err_enp3s009:40:341
5256999368,12cyclictest26-21ksoftirqd/111:35:111
384129341,37sleep10-21swapper/107:05:211
5256999142,44cyclictest0-21swapper/108:45:141
5248999050,24cyclictest14-21ksoftirqd/011:40:100
5248999050,24cyclictest14-21ksoftirqd/011:40:100
74952820,5sleep0171rcuc/010:15:130
74952820,5sleep0171rcuc/010:15:130
434228221,44sleep00-21swapper/007:05:300
5256998148,22cyclictest26-21ksoftirqd/110:10:141
180112790,5sleep10-21swapper/112:15:281
5256997711,60cyclictest0-21swapper/109:20:241
5256997521,14cyclictest26-21ksoftirqd/111:45:051
5256997441,20cyclictest26-21ksoftirqd/110:35:151
5256997417,14cyclictest26-21ksoftirqd/107:35:001
5248997435,15cyclictest14-21ksoftirqd/008:45:160
5248997433,28cyclictest0-21swapper/010:50:130
5256997241,18cyclictest26-21ksoftirqd/111:30:131
524899725,33cyclictest0-21swapper/011:00:380
5256997143,16cyclictest0-21swapper/107:25:151
5256997142,18cyclictest26-21ksoftirqd/108:15:141
5256997126,39cyclictest26-21ksoftirqd/112:30:291
5256997122,14cyclictest26-21ksoftirqd/109:35:051
524899718,20cyclictest151rcu_preempt07:15:130
5248997142,8cyclictest14-21ksoftirqd/011:10:000
266472710,6chrt26650-21unixbench_singl08:05:361
5256997041,18cyclictest0-21swapper/109:25:141
5248997038,16cyclictest14-21ksoftirqd/009:55:120
5248997033,18cyclictest14-21ksoftirqd/011:20:350
5256996939,19cyclictest26-21ksoftirqd/110:40:131
5256996938,18cyclictest0-21swapper/108:35:151
5256996921,14cyclictest26-21ksoftirqd/108:30:051
5256996921,14cyclictest26-21ksoftirqd/108:30:051
5256996920,13cyclictest26-21ksoftirqd/107:39:011
5248996937,27cyclictest14-21ksoftirqd/011:31:260
5248996935,19cyclictest14-21ksoftirqd/011:25:170
5256996842,16cyclictest0-21swapper/112:35:111
5256996842,15cyclictest0-21swapper/110:00:131
5256996842,15cyclictest0-21swapper/110:00:131
5256996823,39cyclictest26-21ksoftirqd/107:50:241
5256996821,20cyclictest19551-21diskstats12:20:211
101912680,11sleep014-21ksoftirqd/007:20:340
5256996739,17cyclictest0-21swapper/110:55:151
5256996737,19cyclictest0-21swapper/111:55:131
5256996736,18cyclictest0-21swapper/108:25:121
525699673,15cyclictest26-21ksoftirqd/108:55:001
5256996724,17cyclictest26-21ksoftirqd/109:15:011
524899675,20cyclictest5755-21apt-get10:10:130
524899675,18cyclictest16234-21apt-get09:10:140
5248996733,28cyclictest14-21ksoftirqd/009:00:180
524899672,14cyclictest9680-21taskset10:20:250
5256996637,19cyclictest26-21ksoftirqd/110:25:121
5256996637,18cyclictest0-21swapper/112:05:161
5256996637,18cyclictest0-21swapper/111:05:131
5256996621,10cyclictest26-21ksoftirqd/111:50:161
5256996619,40cyclictest26-21ksoftirqd/111:25:381
524899669,38cyclictest151rcu_preempt07:50:310
524899666,52cyclictest0-21swapper/010:00:140
524899666,52cyclictest0-21swapper/010:00:140
5248996632,8cyclictest14-21ksoftirqd/009:30:240
5248996632,17cyclictest14-21ksoftirqd/011:55:370
525699653,14cyclictest26-21ksoftirqd/108:00:011
5256996523,14cyclictest26-21ksoftirqd/109:55:011
5248996532,28cyclictest25559-21telnet08:05:150
5248996530,19cyclictest14-21ksoftirqd/007:55:220
236032650,6sleep10-21swapper/111:00:221
525699643,15cyclictest26-21ksoftirqd/107:50:001
5256996430,19cyclictest0-21swapper/107:20:141
5256996424,13cyclictest26-21ksoftirqd/107:15:001
5256996416,14cyclictest26-21ksoftirqd/111:15:001
5256996415,14cyclictest26-21ksoftirqd/109:09:001
5256996413,38cyclictest0-21swapper/111:40:121
5256996413,38cyclictest0-21swapper/111:40:121
5256996412,14cyclictest26-21ksoftirqd/108:15:011
524899645,39cyclictest151rcu_preempt08:10:310
5248996442,13cyclictest3083-21apt-get11:35:110
5248996434,23cyclictest14-21ksoftirqd/008:50:190
5248996432,27cyclictest503-21snmpd10:34:080
5248996431,9cyclictest14-21ksoftirqd/012:35:250
135862640,3sleep0171rcuc/007:30:320
5256996333,18cyclictest0-21swapper/111:20:141
5256996333,18cyclictest0-21swapper/109:30:161
5256996330,20cyclictest0-21swapper/112:10:151
5256996320,15cyclictest26-21ksoftirqd/112:05:011
5256996320,15cyclictest26-21ksoftirqd/109:50:011
5256996318,15cyclictest26-21ksoftirqd/109:15:221
5248996334,8cyclictest21880-21telnet09:25:170
524899633,42cyclictest6051-21ntp_states07:10:310
5248996334,23cyclictest14-21ksoftirqd/007:38:260
5248996331,26cyclictest14-21ksoftirqd/012:15:190
5248996330,16cyclictest14-21ksoftirqd/009:50:350
5248996327,11cyclictest14-21ksoftirqd/009:45:000
525699627,22cyclictest26-21ksoftirqd/107:15:271
5256996226,15cyclictest26-21ksoftirqd/108:05:011
525699622,14cyclictest26-21ksoftirqd/108:45:001
5256996220,14cyclictest26-21ksoftirqd/110:35:001
524899627,16cyclictest29052-21apt-get08:15:140
5248996233,9cyclictest14-21ksoftirqd/008:00:310
5248996223,17cyclictest5822-21aten2.4-expect08:40:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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