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2025-11-01 - 00:20
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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 Fri Oct 31, 2025 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3199927158,9sleep00-21swapper/007:04:020
3220727057,8sleep10-21swapper/107:06:141
32459993410,21cyclictest0-21swapper/109:40:171
32458993131,0cyclictest0-21swapper/010:19:460
32459992929,0cyclictest0-21swapper/111:33:531
32458992919,7cyclictest9904-21apache211:16:270
32459992812,8cyclictest97750irq/106-eth1-rx12:36:111
32459992727,0cyclictest0-21swapper/109:36:121
32459992719,6cyclictest9904-21apache209:08:241
32459992710,12cyclictest0-21swapper/112:27:111
3245999270,24cyclictest0-21swapper/111:56:021
32458992721,3cyclictest9904-21apache208:50:340
32459992611,6cyclictest0-21swapper/112:02:111
32458992610,11cyclictest0-21swapper/011:03:230
32459992519,2cyclictest9904-21apache209:50:401
32459992518,5cyclictest9876-21apache212:21:461
32459992513,8cyclictest9904-21apache209:58:491
32459992512,11cyclictest13600-21kworker/1:207:40:171
32459992510,9cyclictest0-21swapper/110:10:011
3245999245,18cyclictest0-21swapper/112:12:091
3245999245,11cyclictest0-21swapper/107:47:101
3245999243,6cyclictest0-21swapper/110:24:311
32459992417,4cyclictest9904-21apache209:21:361
32459992416,8cyclictest9904-21apache211:28:581
3245999241,4cyclictest0-21swapper/110:21:131
32459992411,3cyclictest1111-21runrttasks08:23:421
32459992410,8cyclictest0-21swapper/111:41:101
32458992417,6cyclictest9876-21apache212:32:010
3245999232,17cyclictest0-21swapper/110:47:081
32459992316,4cyclictest9876-21apache210:16:501
3245899235,11cyclictest0-21swapper/008:37:110
3245899234,10cyclictest0-21swapper/012:07:140
32458992322,0cyclictest7-21ksoftirqd/009:52:110
32458992318,3cyclictest6243-21/usr/sbin/munin11:42:160
32458992318,1cyclictest0-21swapper/011:18:340
32458992315,6cyclictest9876-21apache209:41:470
32458992310,8cyclictest0-21swapper/011:57:130
32458992310,10cyclictest0-21swapper/007:41:540
3245899230,22cyclictest0-21swapper/011:39:180
3245899230,0cyclictest0-21swapper/010:49:170
32459992217,3cyclictest0-21swapper/110:41:531
32459992216,3cyclictest0-21swapper/111:50:091
32459992213,6cyclictest9904-21apache211:44:531
32459992210,5cyclictest0-21swapper/111:10:281
32459992210,5cyclictest0-21swapper/108:32:191
32459992210,0cyclictest0-21swapper/111:17:281
3245899226,10cyclictest0-21swapper/007:22:100
3245899223,8cyclictest0-21swapper/009:12:060
3245899223,12cyclictest1111-21runrttasks11:32:390
32458992217,4cyclictest9904-21apache209:10:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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