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2025-07-17 - 23:43
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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
Characteristics of the 50 highest latencies:
System rackcslot2.osadl.org (updated Thu Jul 17, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
917727349,9sleep10-21swapper/107:05:311
895527057,8sleep00-21swapper/007:03:130
9568993610,26cyclictest0-21swapper/008:26:410
956999332,30cyclictest19417-21kworker/1:211:43:431
9569993310,22cyclictest0-21swapper/110:26:451
938923228,2sleep00-21swapper/007:07:430
9569993110,20cyclictest0-21swapper/109:18:041
9568993119,12cyclictest0-21swapper/010:59:330
9568993110,20cyclictest0-21swapper/010:01:150
9568993110,15cyclictest0-21swapper/012:20:410
956999293,23cyclictest0-21swapper/109:34:341
9568992910,18cyclictest0-21swapper/008:35:260
9568992815,13cyclictest0-21swapper/012:09:010
9568992810,15cyclictest0-21swapper/011:50:120
9569992725,1cyclictest3898-21ssh10:04:361
9568992725,1cyclictest2869-21ssh11:28:190
9568992626,0cyclictest0-21swapper/009:44:400
9568992610,3cyclictest0-21swapper/009:11:200
9569992523,1cyclictest19388-21apache210:54:471
9569992510,12cyclictest0-21swapper/107:53:041
956999250,2cyclictest9042-21/usr/sbin/munin12:23:041
9568992510,11cyclictest0-21swapper/012:25:040
956999241,21cyclictest19417-21kworker/1:209:05:151
9569992410,7cyclictest0-21swapper/109:12:501
9568992423,1cyclictest0-21swapper/008:50:060
956899241,19cyclictest23445-21diskmemload10:48:490
9568992410,14cyclictest0-21swapper/010:46:480
956899240,3cyclictest15706-21latency09:38:000
956899240,23cyclictest0-21swapper/010:35:300
956999239,13cyclictest0-21swapper/109:30:481
9569992321,1cyclictest23687-21sendmail_mailqu09:48:031
9569992319,3cyclictest0-21swapper/111:48:231
9569992318,3cyclictest19388-21apache211:38:501
9569992310,8cyclictest0-21swapper/111:36:151
956999230,22cyclictest0-21swapper/110:27:501
9568992323,0cyclictest0-21swapper/007:17:440
9568992322,1cyclictest0-21swapper/012:04:500
9568992317,4cyclictest19388-21apache210:05:210
956899230,22cyclictest0-21swapper/009:21:100
956899230,11cyclictest0-21swapper/009:13:010
9569992219,2cyclictest26700-21ssh09:11:111
956999221,14cyclictest0-21swapper/111:53:221
9569992210,5cyclictest0-21swapper/112:03:071
9569992210,12cyclictest0-21swapper/111:20:241
956999220,20cyclictest2255-21ssh10:44:061
9568992219,2cyclictest0-21swapper/011:56:420
956899221,2cyclictest0-21swapper/009:49:000
956899221,19cyclictest19344-21kworker/0:210:20:160
9568992210,4cyclictest0-21swapper/008:02:570
956899220,21cyclictest19344-21kworker/0:207:53:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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