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2026-09-02 - 18:39
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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 rack0slot2.osadl.org (updated Wed Sep 02, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
135039125722,30sleep70-21swapper/707:05:117
135066225141,7sleep40-21swapper/407:07:494
1351093994843,4cyclictest1637313-21latency_hist09:29:337
1351093994640,5cyclictest1500624-21latency_hist08:24:327
1351093993332,0cyclictest0-21swapper/710:44:347
1351093993331,1cyclictest0-21swapper/710:49:537
1351093993230,1cyclictest2005483-21ssh11:58:187
1351093993230,1cyclictest1588099-21diskmemload11:59:447
135066323221,8sleep50-21swapper/507:07:505
13506122327,8sleep60-21swapper/607:07:106
1351093993130,0cyclictest0-21swapper/709:54:277
135109399310,29cyclictest1955038-21ssh11:35:547
1351091993025,2cyclictest1707839-21kworker/u16:4+events_unbound09:59:456
1351093992927,1cyclictest2041970-21ssh12:12:427
1351093992926,1cyclictest0-21swapper/708:44:337
1351093992826,1cyclictest0-21swapper/709:38:547
1351093992726,0cyclictest0-21swapper/712:34:337
1351093992726,0cyclictest0-21swapper/711:14:307
1351093992625,0cyclictest0-21swapper/710:24:427
1351093992625,0cyclictest0-21swapper/709:59:337
1351090992523,2cyclictest1646299-21kworker/u16:1+events_unbound10:41:465
1351090992523,2cyclictest1276903-21kworker/u16:1+events_unbound07:45:025
1351093992419,4cyclictest1748140-21latency_hist10:14:337
1351091992422,2cyclictest1646299-21kworker/u16:1+events_unbound10:09:436
1351091992422,2cyclictest1558924-21kworker/u16:2+flush-8:009:49:576
1351091992422,2cyclictest1558924-21kworker/u16:2+events_unbound09:25:156
1351090992422,2cyclictest1785170-21kworker/u16:2+events_unbound10:49:465
1351090992422,2cyclictest1597227-21kworker/u16:3+events_unbound10:16:065
1351093992322,0cyclictest0-21swapper/711:19:577
1351093992322,0cyclictest0-21swapper/710:22:137
1351091992321,2cyclictest1920340-21kworker/u16:5+events_unbound11:54:456
1351090992321,2cyclictest1920340-21kworker/u16:5+events_unbound12:05:465
1351090992321,2cyclictest1920340-21kworker/u16:5+events_unbound12:01:145
1351090992321,2cyclictest1920340-21kworker/u16:5+events_unbound11:46:335
1351090992321,2cyclictest1785170-21kworker/u16:2+events_unbound10:47:265
1351090992321,2cyclictest1558924-21kworker/u16:2+events_unbound09:45:425
1351090992320,2cyclictest1858860-21kworker/u16:3+events_unbound11:53:295
1351093992221,0cyclictest0-21swapper/711:25:257
1351093992221,0cyclictest0-21swapper/710:14:407
1351093992220,1cyclictest1724695-21ssh10:04:467
135109399220,20cyclictest1871109-21latency_hist11:04:327
1351091992220,2cyclictest1858860-21kworker/u16:3+flush-8:011:50:016
1351091992219,2cyclictest1858860-21kworker/u16:3+events_unbound11:39:406
1351090992220,2cyclictest1920340-21kworker/u16:5+events_unbound12:14:415
1351090992220,2cyclictest1920340-21kworker/u16:5+events_unbound11:35:265
1351090992220,2cyclictest1920255-21kworker/u16:2+events_unbound11:31:225
1351090992220,2cyclictest1597227-21kworker/u16:3+events_unbound09:22:215
1351093992120,0cyclictest0-21swapper/710:56:457
1351093992119,1cyclictest1969761-21ssh11:44:377
1351093992118,2cyclictest1648869-21ssh09:33:187
135109399210,19cyclictest1161-21lldpd10:41:107
1351091992119,2cyclictest1451071-21kworker/u16:0+events_unbound08:18:356
1351091992118,2cyclictest1558924-21kworker/u16:2+flush-8:009:09:496
1351090992119,2cyclictest1858860-21kworker/u16:3+events_unbound11:59:255
1351090992119,2cyclictest1785170-21kworker/u16:2+events_unbound11:01:495
1351090992119,2cyclictest1785170-21kworker/u16:2+events_unbound10:34:105
1351090992119,2cyclictest1707839-21kworker/u16:4+events_unbound10:26:415
1351090992119,2cyclictest1646299-21kworker/u16:1+events_unbound10:12:465
1351090992119,2cyclictest1597227-21kworker/u16:3+events_unbound09:39:295
1351090992119,2cyclictest1578528-21kworker/u16:4+events_unbound09:11:265
1351090992119,2cyclictest1509385-21kworker/u16:3+events_unbound08:56:355
1351090992116,2cyclictest1858860-21kworker/u16:3+events_unbound12:20:315
1351093992019,0cyclictest0-21swapper/712:23:417
1351093992019,0cyclictest0-21swapper/707:44:287
1351091992018,2cyclictest1707839-21kworker/u16:4+events_unbound10:58:266
1351091992018,2cyclictest1509385-21kworker/u16:3+events_unbound08:59:336
1351091992018,2cyclictest1276903-21kworker/u16:1+flush-8:007:34:486
1351090992018,2cyclictest1707839-21kworker/u16:4+events_unbound10:35:585
1351090992018,2cyclictest1646299-21kworker/u16:1+events_unbound09:44:055
1351090992018,2cyclictest1597227-21kworker/u16:3+events_unbound10:01:095
1351090992018,2cyclictest1276903-21kworker/u16:1+events_unbound07:15:025
1351090992017,2cyclictest1785170-21kworker/u16:2+events_unbound11:14:375
1351093991918,0cyclictest0-21swapper/711:15:297
1351093991918,0cyclictest0-21swapper/709:10:307
1351091991917,2cyclictest1785170-21kworker/u16:2+events_unbound11:04:146
1351091991917,2cyclictest1597227-21kworker/u16:3+events_unbound09:39:436
1351091991917,2cyclictest1509385-21kworker/u16:3+flush-8:009:04:566
1351091991917,2cyclictest1509385-21kworker/u16:3+flush-8:009:04:566
1351091991917,2cyclictest1276903-21kworker/u16:1+flush-8:007:44:576
1351090991917,2cyclictest2055354-21kworker/u16:4+events_unbound12:26:135
1351090991917,2cyclictest2018524-21kworker/u16:1+events_unbound12:12:265
1351090991917,2cyclictest1920340-21kworker/u16:5+events_unbound11:41:065
1351090991917,2cyclictest1707839-21kworker/u16:4+events_unbound10:05:585
1351090991917,2cyclictest1451071-21kworker/u16:0+events_unbound08:18:115
1351090991916,2cyclictest1597227-21kworker/u16:3+events_unbound09:29:355
1351093991817,0cyclictest0-21swapper/712:33:467
1351093991817,0cyclictest0-21swapper/712:33:467
1351093991817,0cyclictest0-21swapper/712:05:237
1351093991817,0cyclictest0-21swapper/710:35:507
1351093991814,3cyclictest1624751-21seq09:24:057
1351093991814,3cyclictest1277-21snmpd07:25:207
1351091991816,2cyclictest1509385-21kworker/u16:3+events_unbound08:58:566
1351091991816,2cyclictest1341069-21kworker/u16:3+flush-8:007:49:536
1351091991816,2cyclictest1341069-21kworker/u16:3+events_unbound07:39:476
1351091991816,2cyclictest1287124-21kworker/u16:0+events_unbound07:16:026
1351091991816,2cyclictest1276903-21kworker/u16:1+events_unbound08:46:396
1351091991815,2cyclictest1276903-21kworker/u16:1+flush-8:008:24:586
1351090991816,2cyclictest1858787-21kworker/u16:1+events_unbound11:21:425
1351090991816,2cyclictest1785170-21kworker/u16:2+events_unbound11:11:325
1351090991816,2cyclictest1646299-21kworker/u16:1+events_unbound10:22:055
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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