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2026-08-21 - 20:55
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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 100 highest latencies:
System rackcslot2.osadl.org (updated Fri Aug 21, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
850021310,0sleep18279-21/usr/sbin/munin08:28:171
314652970,2sleep0960599cyclictest12:23:170
276062960,0sleep10-21swapper/107:53:201
857626959,5sleep00-21swapper/007:03:260
899426754,8sleep10-21swapper/107:03:371
42662650,0sleep10-21swapper/112:30:341
159072630,0sleep00-21swapper/008:48:050
9606993411,4cyclictest0-21swapper/109:22:091
9606993310,0cyclictest0-21swapper/111:59:161
9606993010,16cyclictest0-21swapper/111:44:241
9606992910,14cyclictest0-21swapper/111:50:061
960599290,26cyclictest2487-21kworker/u4:011:04:330
9606992827,0cyclictest0-21swapper/109:08:401
9606992727,0cyclictest0-21swapper/109:34:471
960699262,22cyclictest0-21swapper/111:25:271
9606992610,10cyclictest0-21swapper/110:43:201
960699260,1cyclictest0-21swapper/109:48:221
9606992523,1cyclictest27493-21/usr/sbin/munin09:13:231
9606992513,8cyclictest636-21nscd10:30:201
960699250,2cyclictest0-21swapper/112:08:481
960699243,7cyclictest0-21swapper/108:38:251
9606992422,1cyclictest1199-21runrttasks11:13:351
9606992413,7cyclictest0-21swapper/109:44:151
960699240,1cyclictest0-21swapper/110:11:331
960599244,14cyclictest0-21swapper/010:43:220
9605992423,0cyclictest0-21swapper/010:37:530
960599241,19cyclictest0-21swapper/009:42:310
960599240,1cyclictest0-21swapper/009:30:040
9606992321,1cyclictest947-21sendmail-mta10:39:351
960699230,3cyclictest0-21swapper/112:36:031
960699230,1cyclictest0-21swapper/110:59:041
9605992322,1cyclictest14221-21apache207:18:200
9605992312,8cyclictest7661-21ssh10:16:120
9605992310,8cyclictest0-21swapper/010:08:180
9605992310,8cyclictest0-21swapper/007:11:100
9605992310,1cyclictest0-21swapper/012:08:590
9606992222,0cyclictest0-21swapper/110:24:391
9606992222,0cyclictest0-21swapper/109:23:121
9606992212,5cyclictest19476-21apache211:35:421
9606992210,3cyclictest0-21swapper/109:59:321
9606992210,1cyclictest0-21swapper/111:10:241
9606992210,10cyclictest0-21swapper/107:23:011
960699220,3cyclictest0-21swapper/109:30:291
960599226,14cyclictest0-21swapper/010:53:250
9605992221,1cyclictest19476-21apache210:24:040
9605992221,0cyclictest22349-21awk07:38:230
9605992217,4cyclictest19476-21apache209:16:490
9605992216,4cyclictest19502-21apache210:28:400
9605992215,3cyclictest28104-21kworker/0:011:34:350
9605992210,5cyclictest0-21swapper/011:43:210
9605992210,4cyclictest0-21swapper/010:03:050
960699211,6cyclictest0-21swapper/112:23:371
9606992110,6cyclictest0-21swapper/107:30:261
9606992110,4cyclictest0-21swapper/110:03:181
9606992110,3cyclictest0-21swapper/112:18:161
960699210,7cyclictest0-21swapper/110:18:251
9605992119,1cyclictest0-21swapper/011:56:470
9605992111,5cyclictest0-21swapper/010:58:170
9605992110,4cyclictest0-21swapper/008:08:250
9606992020,0cyclictest0-21swapper/110:53:181
9606992019,1cyclictest24-21ksoftirqd/108:18:051
9606992018,1cyclictest24-21ksoftirqd/111:56:241
9606992010,6cyclictest0-21swapper/111:18:181
9606992010,4cyclictest0-21swapper/108:53:231
9606992010,3cyclictest0-21swapper/111:07:141
9606992010,3cyclictest0-21swapper/108:24:201
9606992010,1cyclictest17149-21ssh12:03:181
960699200,7cyclictest0-21swapper/107:23:161
960699200,17cyclictest0-21swapper/111:29:441
960599207,8cyclictest0-21swapper/012:20:080
960599204,8cyclictest17384-21apache_accesses07:28:150
960599202,7cyclictest22822-21/usr/sbin/munin10:38:210
9605992019,1cyclictest0-21swapper/007:14:540
9605992010,7cyclictest0-21swapper/012:32:220
9605992010,6cyclictest0-21swapper/009:45:090
9605992010,3cyclictest0-21swapper/012:03:270
9605992010,3cyclictest0-21swapper/009:03:230
9605992010,3cyclictest0-21swapper/008:16:540
9605992010,1cyclictest0-21swapper/007:53:220
960599200,9cyclictest0-21swapper/010:21:230
960699195,12cyclictest0-21swapper/110:33:221
960699192,7cyclictest0-21swapper/107:38:151
9606991915,3cyclictest10139-21if_eth307:08:191
9606991911,5cyclictest100250irq/107-eth1-rx10:18:001
9606991910,5cyclictest0-21swapper/110:48:151
9606991910,5cyclictest0-21swapper/108:08:211
9606991910,4cyclictest0-21swapper/109:53:251
9606991910,4cyclictest0-21swapper/108:48:171
9606991910,4cyclictest0-21swapper/107:48:221
9606991910,3cyclictest0-21swapper/107:58:211
9606991910,1cyclictest0-21swapper/107:33:171
960699190,9cyclictest0-21swapper/112:13:241
960599199,6cyclictest23418-21apache_processe07:43:170
960599194,7cyclictest0-21swapper/007:23:180
960599193,5cyclictest2992-21munin-run11:43:060
960599192,6cyclictest0-21swapper/009:18:260
9605991918,1cyclictest24479-21snmpd08:31:400
9605991913,4cyclictest21494-21sshd09:02:000
9605991910,5cyclictest0-21swapper/009:50:450
9605991910,4cyclictest0-21swapper/011:58:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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