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2026-08-29 - 16:32
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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 Sat Aug 29, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3076027656,15sleep10-21swapper/107:03:161
236612710,1sleep10-21swapper/108:08:141
3215426654,8sleep00-21swapper/007:06:450
32458993232,0cyclictest0-21swapper/011:15:060
32458993210,4cyclictest0-21swapper/010:21:030
3245999310,1cyclictest0-21swapper/112:06:001
32459992910,3cyclictest0-21swapper/109:26:281
32458992910,17cyclictest0-21swapper/010:36:440
3245899290,20cyclictest7-21ksoftirqd/009:38:140
32459992828,0cyclictest231ktimersoftd/109:38:141
32459992725,1cyclictest0-21swapper/111:25:251
32459992713,11cyclictest12713-21kworker/u4:212:26:441
32459992710,16cyclictest0-21swapper/111:13:131
3245999270,16cyclictest0-21swapper/108:33:211
3245999266,19cyclictest0-21swapper/109:33:141
32459992626,0cyclictest0-21swapper/110:46:541
3245999260,1cyclictest0-21swapper/110:32:521
3245999260,0cyclictest30616-21kworker/1:010:36:301
32459992510,9cyclictest0-21swapper/110:50:011
32459992510,8cyclictest0-21swapper/110:10:561
32458992525,0cyclictest0-21swapper/009:46:200
32458992424,0cyclictest0-21swapper/011:24:130
32458992422,1cyclictest7-21ksoftirqd/011:23:010
32458992410,2cyclictest0-21swapper/009:58:180
32458992410,1cyclictest0-21swapper/009:16:430
3245899240,1cyclictest16262-21kworker/u4:010:43:590
129022240,0sleep00-21swapper/009:51:170
3245999232,19cyclictest0-21swapper/109:11:541
32459992319,3cyclictest4125-21ssh10:24:241
32459992310,12cyclictest0-21swapper/110:04:591
32458992322,1cyclictest0-21swapper/010:05:410
32458992310,8cyclictest0-21swapper/011:50:400
32458992310,1cyclictest0-21swapper/010:17:250
3245899230,5cyclictest91rcu_preempt11:03:150
3245999225,10cyclictest0-21swapper/109:43:151
32459992217,3cyclictest9937-21apache209:53:311
32459992214,6cyclictest27296-21/usr/sbin/munin08:18:181
32459992210,6cyclictest0-21swapper/112:33:141
32459992210,4cyclictest0-21swapper/111:43:191
32459992210,3cyclictest0-21swapper/110:42:101
3245899229,4cyclictest23886-21ssh12:28:140
32458992219,2cyclictest15446-21ssh11:28:170
32458992216,5cyclictest9964-21apache210:57:190
32458992214,5cyclictest0-21swapper/009:57:430
3245899221,19cyclictest25063-21rm11:43:050
32458992210,6cyclictest0-21swapper/010:29:240
608122110,0sleep00-21swapper/012:02:210
3245999213,10cyclictest0-21swapper/107:23:141
32459992119,1cyclictest19198-21ntp_states11:33:191
32459992115,1cyclictest29231-21rm10:13:501
32459992115,1cyclictest0-21swapper/112:08:411
32459992110,5cyclictest0-21swapper/110:55:171
32459992110,5cyclictest0-21swapper/107:44:381
32459992110,4cyclictest0-21swapper/110:00:471
3245999210,2cyclictest29285-21ssh11:01:511
3245999210,2cyclictest0-21swapper/109:13:591
3245999210,15cyclictest0-21swapper/112:18:191
3245899214,8cyclictest0-21swapper/007:58:210
3245899214,16cyclictest0-21swapper/011:34:090
32458992119,1cyclictest0-21swapper/009:30:350
32458992118,2cyclictest7-21ksoftirqd/011:38:120
32458992112,4cyclictest9937-21apache209:09:280
32458992110,7cyclictest0-21swapper/012:03:190
32458992110,5cyclictest0-21swapper/010:48:130
32458992110,3cyclictest0-21swapper/009:03:130
32458992110,3cyclictest0-21swapper/007:23:140
3245999207,6cyclictest0-21swapper/107:18:231
3245999205,11cyclictest0-21swapper/111:03:121
3245999204,8cyclictest0-21swapper/107:58:231
3245999201,3cyclictest0-21swapper/111:12:391
32459992013,6cyclictest9937-21apache211:18:041
3245999201,12cyclictest0-21swapper/107:33:021
32459992010,5cyclictest0-21swapper/111:48:151
32459992010,5cyclictest0-21swapper/108:43:141
32459992010,4cyclictest0-21swapper/108:03:191
32459992010,1cyclictest0-21swapper/109:48:111
3245899203,9cyclictest0-21swapper/008:43:140
3245899203,13cyclictest0-21swapper/009:18:150
32458992019,0cyclictest7-21ksoftirqd/008:53:190
32458992018,1cyclictest3112-21latency_hist09:38:020
32458992016,1cyclictest7-21ksoftirqd/008:23:190
32458992016,1cyclictest7-21ksoftirqd/008:23:190
32458992011,5cyclictest100250irq/107-eth1-rx10:58:220
32458992011,3cyclictest100150irq/106-eth1-rx10:38:100
32458992010,6cyclictest0-21swapper/010:23:130
32458992010,4cyclictest0-21swapper/008:58:230
32458992010,4cyclictest0-21swapper/008:33:190
32458992010,3cyclictest0-21swapper/009:23:130
32458992010,3cyclictest0-21swapper/007:13:160
32458992010,1cyclictest0-21swapper/011:56:260
140222010,0sleep00-21swapper/011:08:180
3245999198,7cyclictest0-21swapper/108:40:121
32459991919,0cyclictest231ktimersoftd/112:30:331
32459991918,1cyclictest9964-21apache210:18:161
32459991913,5cyclictest100150irq/106-eth1-rx11:38:241
3245999191,14cyclictest3766-21grep11:58:161
32459991911,4cyclictest0-21swapper/108:13:161
32459991910,5cyclictest9964-21apache208:59:391
3245999190,11cyclictest0-21swapper/107:16:201
3245899199,8cyclictest0-21swapper/007:08:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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