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2026-04-11 - 19:15
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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 rack0slot5.osadl.org (updated Sat Apr 11, 2026 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2903459953714,522cyclictest0-21swapper/220:30:168
2903459953714,522cyclictest0-21swapper/220:30:168
2903429953419,514cyclictest0-21swapper/123:45:151
29039799518517,1cyclictest432201-21kworker/15:0+i915-unordered22:11:157
29037199513511,2cyclictest512935-21kworker/9:0+i915-unordered23:45:1515
29038499508505,2cyclictest0-21swapper/1222:10:154
2903459950618,487cyclictest0-21swapper/200:23:158
2903609950114,486cyclictest0-21swapper/620:46:1612
29039799500499,1cyclictest367762-21kworker/15:1+i915-unordered20:51:167
29035099485484,1cyclictest347698-21kworker/3:2+i915-unordered20:21:169
2903429948320,462cyclictest0-21swapper/119:48:161
2903799947722,58cyclictest0-21swapper/1119:26:373
2903939947525,30cyclictest0-21swapper/1422:59:386
2903539947526,30cyclictest0-21swapper/422:41:0010
290342994729,462cyclictest0-21swapper/120:21:161
2903799946318,29cyclictest0-21swapper/1120:17:393
2903799946315,30cyclictest0-21swapper/1121:42:383
29037199461460,1cyclictest69750irq/159-i91519:48:1615
2903429946120,440cyclictest0-21swapper/123:18:151
2903429946120,440cyclictest0-21swapper/123:18:151
290393994572,58cyclictest0-21swapper/1422:21:596
29036999456454,1cyclictest0-21swapper/823:08:5814
29036499453451,2cyclictest0-21swapper/723:18:1513
29036499453451,2cyclictest0-21swapper/723:18:1513
29034299453452,1cyclictest0-21swapper/120:51:161
29034299452451,1cyclictest0-21swapper/120:42:161
2903609945158,392cyclictest0-21swapper/623:38:1512
29037199450449,1cyclictest69750irq/159-i91520:21:1615
2903609944925,29cyclictest0-21swapper/600:37:1512
2903749944626,419cyclictest0-21swapper/1019:38:372
2903609944623,29cyclictest0-21swapper/622:46:1512
2903749944525,419cyclictest0-21swapper/1000:00:382
29036999445445,0cyclictest0-21swapper/823:35:3814
2903699944523,28cyclictest0-21swapper/800:33:0014
2903609944524,28cyclictest0-21swapper/620:50:1512
29035399445444,1cyclictest404049-21kworker/4:2+i915-unordered22:10:1510
29034299445443,1cyclictest452370-21kworker/1:0+i915-unordered22:25:591
2903799944419,30cyclictest0-21swapper/1120:36:363
2903389944415,29cyclictest0-21swapper/000:20:150
29036499443442,1cyclictest0-21swapper/720:42:1613
29034299443441,1cyclictest0-21swapper/120:30:161
29034299443441,1cyclictest0-21swapper/120:30:161
2903649944226,30cyclictest0-21swapper/721:16:1513
290342994423,438cyclictest0-21swapper/122:11:151
29038499439435,3cyclictest1818-21snmpd19:21:494
2903849943917,30cyclictest0-21swapper/1221:26:154
2903799943915,30cyclictest0-21swapper/1120:20:383
29037199439438,1cyclictest69750irq/159-i91523:18:1515
29037199439438,1cyclictest69750irq/159-i91523:18:1515
2903719943815,30cyclictest0-21swapper/921:51:1515
2903429943710,426cyclictest0-21swapper/120:46:161
2903719943515,420cyclictest0-21swapper/920:58:1515
29034299434434,0cyclictest0-21swapper/122:57:151
290393994337,29cyclictest0-21swapper/1423:44:016
29037499433431,2cyclictest1818-21snmpd21:17:502
2903509943319,414cyclictest0-21swapper/320:31:169
2903509943319,414cyclictest0-21swapper/320:31:169
2903939943111,420cyclictest0-21swapper/1419:30:006
2903939943111,419cyclictest0-21swapper/1419:45:586
29037199431431,0cyclictest69750irq/159-i91520:51:1615
29037199431430,1cyclictest69750irq/159-i91520:42:1615
2903699943118,413cyclictest0-21swapper/820:46:0014
29036499431430,1cyclictest88-21ksoftirqd/720:51:1613
2903649943114,29cyclictest0-21swapper/723:28:1513
290397994305,424cyclictest160-21ksoftirqd/1523:08:157
2903939943010,418cyclictest0-21swapper/1400:12:596
2903389943010,30cyclictest0-21swapper/021:22:150
29036999429429,0cyclictest0-21swapper/819:42:0214
290388994280,426cyclictest0-21swapper/1321:17:505
290397994271,28cyclictest0-21swapper/1522:33:157
290393994271,30cyclictest0-21swapper/1400:26:596
29037499426425,1cyclictest0-21swapper/1022:36:152
290374994260,27cyclictest0-21swapper/1023:51:372
29035699426424,2cyclictest335481-21kworker/5:0+pm21:17:5011
2903749942524,400cyclictest0-21swapper/1019:32:372
290364994254,29cyclictest0-21swapper/722:11:1513
2903749942426,397cyclictest0-21swapper/1022:45:392
2903749942425,398cyclictest0-21swapper/1022:18:382
2903749942425,398cyclictest0-21swapper/1021:55:382
29037199424422,1cyclictest0-21swapper/922:25:5915
29035399424423,1cyclictest0-21swapper/423:08:5810
2903749942325,398cyclictest0-21swapper/1019:40:392
2903749942324,398cyclictest0-21swapper/1020:40:382
290374994232,419cyclictest0-21swapper/1021:06:592
2903749942323,399cyclictest0-21swapper/1020:28:382
2903749942323,399cyclictest0-21swapper/1020:28:382
2903749942323,399cyclictest0-21swapper/1019:45:372
29037199423423,0cyclictest0-21swapper/921:40:5015
290360994230,422cyclictest79-21ksoftirqd/623:27:1512
29034599422419,2cyclictest371913-21kworker/2:2+events21:06:598
2903749942123,397cyclictest0-21swapper/1019:23:362
29037199421420,1cyclictest69750irq/159-i91520:30:1615
29037199421420,1cyclictest69750irq/159-i91520:30:1615
29038899420417,2cyclictest408053-21kworker/u64:2+events_unbound21:42:165
290374994200,418cyclictest0-21swapper/1022:05:012
2903979941920,398cyclictest0-21swapper/1522:02:367
2903939941921,396cyclictest0-21swapper/1423:33:016
2903939941921,395cyclictest0-21swapper/1421:54:596
2903799941926,392cyclictest0-21swapper/1122:37:153
29037199419418,1cyclictest69750irq/159-i91522:11:1515
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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