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2026-04-20 - 21:15
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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 Mon Apr 20, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23756211035,59sleep10-21swapper/107:06:161
1196621030,7sleep0171rcuc/009:35:240
61222850,5chrt6124-21timerandwakeup07:45:351
24285998211,64cyclictest503-21snmpd07:50:120
232232818,56sleep023258-21/usr/sbin/munin07:05:250
24290997945,15cyclictest13463-21telnet09:40:151
24285997962,12cyclictest14-21ksoftirqd/011:45:260
24285997853,14cyclictest0-21swapper/007:25:150
24285997519,51cyclictest0-21swapper/010:15:130
24285997457,9cyclictest14-21ksoftirqd/009:50:130
24285997450,13cyclictest0-21swapper/011:25:110
24285997414,55cyclictest0-21swapper/009:45:150
24290997348,10cyclictest503-21snmpd11:39:481
24290997339,16cyclictest26-21ksoftirqd/111:24:511
24290997330,39cyclictest26-21ksoftirqd/107:40:451
24285997347,14cyclictest0-21swapper/008:05:130
24285997252,13cyclictest0-21swapper/009:00:100
24290997149,9cyclictest16870-21/usr/sbin/munin09:50:181
24285997120,16cyclictest3082-21cat09:10:280
2428599704,26cyclictest29520-21turbostat08:55:000
2428599704,26cyclictest29520-21turbostat08:55:000
24285997013,51cyclictest0-21swapper/008:15:150
24290996942,14cyclictest7629-21telnet10:55:161
24285996914,49cyclictest0-21swapper/010:00:140
24285996913,51cyclictest0-21swapper/008:45:140
24285996813,49cyclictest0-21swapper/007:10:110
24290996634,14cyclictest26-21ksoftirqd/108:00:001
24290996634,11cyclictest26-21ksoftirqd/110:50:321
24285996644,12cyclictest14-21ksoftirqd/009:25:230
24285996642,18cyclictest14-21ksoftirqd/012:25:220
24285996640,15cyclictest14-21ksoftirqd/008:20:140
24290996534,11cyclictest26-21ksoftirqd/110:30:281
24290996533,11cyclictest26-21ksoftirqd/107:36:231
24285996545,9cyclictest14-21ksoftirqd/007:55:140
24285996530,27cyclictest14-21ksoftirqd/011:05:240
24290996428,14cyclictest26-21ksoftirqd/109:20:001
24285996449,10cyclictest14-21ksoftirqd/007:20:130
24290996334,23cyclictest26-21ksoftirqd/108:15:311
24290996331,8cyclictest26-21ksoftirqd/110:19:301
24290996331,25cyclictest26-21ksoftirqd/108:20:331
24290996327,13cyclictest26-21ksoftirqd/111:09:001
24290996321,36cyclictest0-21swapper/111:45:101
24285996320,38cyclictest10890-21latency_hist11:05:010
24290996232,24cyclictest26-21ksoftirqd/112:25:291
24290996232,23cyclictest26-21ksoftirqd/108:00:351
24290996230,26cyclictest26-21ksoftirqd/110:20:391
24285996233,19cyclictest0-21swapper/011:55:120
24290996130,25cyclictest26-21ksoftirqd/108:40:361
24290996130,20cyclictest26-21ksoftirqd/112:35:381
24290996129,26cyclictest26-21ksoftirqd/110:04:291
24285996124,32cyclictest243-21systemd-journal11:14:430
24290996037,17cyclictest26-21ksoftirqd/109:35:231
24290996036,18cyclictest26-21ksoftirqd/109:25:021
24290996035,18cyclictest26-21ksoftirqd/111:40:191
24290996033,15cyclictest26-21ksoftirqd/107:29:531
24290996027,14cyclictest26-21ksoftirqd/109:35:011
24290996023,12cyclictest13153-21sed08:05:361
24290996022,14cyclictest26-21ksoftirqd/111:55:001
2428599604,29cyclictest243-21systemd-journal09:00:000
2428599603,23cyclictest6742-21cron07:50:000
24285996025,31cyclictest243-21systemd-journal12:24:570
24285996022,33cyclictest624-21aten2.4-expect10:35:190
24285996022,33cyclictest624-21aten2.4-expect10:35:190
24290995938,8cyclictest26-21ksoftirqd/107:20:191
24290995938,16cyclictest26-21ksoftirqd/112:00:171
24290995937,8cyclictest26-21ksoftirqd/109:59:211
24290995935,9cyclictest26-21ksoftirqd/107:50:371
24290995935,18cyclictest26-21ksoftirqd/108:55:221
24290995935,17cyclictest26-21ksoftirqd/108:53:441
24290995935,17cyclictest26-21ksoftirqd/108:53:441
24290995934,19cyclictest26-21ksoftirqd/111:30:191
24290995934,19cyclictest26-21ksoftirqd/109:10:191
24290995929,25cyclictest26-21ksoftirqd/111:25:101
24290995923,14cyclictest26-21ksoftirqd/110:45:011
24290995921,16cyclictest26-21ksoftirqd/108:50:001
24285995932,21cyclictest503-21snmpd10:10:370
24285995930,17cyclictest0-21swapper/012:05:120
24285995930,15cyclictest0-21swapper/010:25:130
24285995928,24cyclictest31187-21runrttasks10:30:100
21162595,10sleep10-21swapper/110:40:011
21162595,10sleep10-21swapper/110:40:011
24290995839,12cyclictest26-21ksoftirqd/107:30:301
24290995836,8cyclictest26-21ksoftirqd/108:30:181
24290995836,16cyclictest26-21ksoftirqd/111:19:441
24290995835,18cyclictest26-21ksoftirqd/109:45:251
24290995835,18cyclictest26-21ksoftirqd/108:25:121
24290995835,17cyclictest26-21ksoftirqd/110:05:181
24290995835,17cyclictest26-21ksoftirqd/108:10:241
24290995835,17cyclictest26-21ksoftirqd/107:15:141
24290995835,17cyclictest26-21ksoftirqd/107:15:141
24290995834,18cyclictest26-21ksoftirqd/111:10:241
24290995824,14cyclictest503-21snmpd10:29:321
24290995823,14cyclictest26-21ksoftirqd/112:15:001
24290995822,23cyclictest10362-21awk11:00:331
24290995822,13cyclictest26-21ksoftirqd/112:35:001
24290995821,21cyclictest4046-21/usr/sbin/munin10:45:281
24290995817,18cyclictest0-21swapper/109:20:301
24285995830,17cyclictest0-21swapper/008:10:130
24285995829,17cyclictest0-21swapper/011:20:140
24285995827,17cyclictest0-21swapper/009:05:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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