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2026-08-18 - 05:26
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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 376 highest latencies:
System rackcslot2.osadl.org (updated Tue Aug 18, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
306242840,1sleep00-21swapper/021:23:070
441627856,17sleep00-21swapper/019:03:260
563127436,33sleep10-21swapper/119:06:441
5944993310,21cyclictest0-21swapper/021:34:190
5944993110,0cyclictest0-21swapper/023:43:540
5945992929,0cyclictest0-21swapper/121:30:411
5944992912,3cyclictest81ktimersoftd/023:26:280
594499280,6cyclictest0-21swapper/019:08:210
5945992727,0cyclictest0-21swapper/122:47:461
5945992719,5cyclictest167-21systemd-journal20:59:031
5945992710,9cyclictest0-21swapper/122:28:251
5945992710,5cyclictest0-21swapper/123:16:521
5945992710,2cyclictest0-21swapper/123:32:311
5944992724,2cyclictest81ktimersoftd/021:11:120
5945992621,3cyclictest21508-21apache220:44:331
5944992624,1cyclictest28892-21ssh22:52:420
5944992610,3cyclictest0-21swapper/000:36:280
5945992525,0cyclictest0-21swapper/123:02:141
5945992521,4cyclictest21482-21apache223:11:561
5945992519,3cyclictest0-21swapper/121:39:081
594599250,11cyclictest0-21swapper/122:09:271
5945992410,8cyclictest0-21swapper/119:38:191
5944992416,2cyclictest0-21swapper/023:34:410
5944992412,3cyclictest0-21swapper/023:31:580
5944992411,4cyclictest0-21swapper/020:15:120
5944992410,8cyclictest0-21swapper/022:45:520
594499240,3cyclictest0-21swapper/023:02:240
594599232,6cyclictest0-21swapper/120:18:281
5945992323,0cyclictest0-21swapper/121:22:291
5945992319,4cyclictest21482-21apache221:25:351
5945992310,9cyclictest0-21swapper/122:40:291
5944992318,3cyclictest21482-21apache219:59:470
5944992313,5cyclictest0-21swapper/022:53:180
594599225,8cyclictest0-21swapper/123:48:281
5945992212,4cyclictest0-21swapper/121:51:361
5945992210,10cyclictest0-21swapper/100:04:011
594499227,12cyclictest0-21swapper/023:18:240
5944992222,0cyclictest0-21swapper/021:39:100
5944992217,4cyclictest4043-21sleep21:30:490
5944992211,5cyclictest0-21swapper/019:28:280
5944992210,8cyclictest0-21swapper/000:13:190
5944992210,6cyclictest0-21swapper/022:13:220
594499220,7cyclictest0-21swapper/022:23:200
296502220,0sleep00-21swapper/000:28:260
5945992120,0cyclictest231ktimersoftd/121:46:171
5945992117,3cyclictest21482-21apache200:00:541
5945992112,4cyclictest0-21swapper/122:57:461
5945992110,7cyclictest0-21swapper/123:33:261
5945992110,7cyclictest0-21swapper/100:23:211
5945992110,6cyclictest0-21swapper/122:18:491
5945992110,5cyclictest0-21swapper/123:43:181
5945992110,3cyclictest0-21swapper/119:28:191
594599210,13cyclictest0-21swapper/120:38:201
5944992119,1cyclictest9633-21cron19:18:070
5944992118,2cyclictest21508-21apache220:18:260
5944992117,3cyclictest802-21apache220:29:350
5944992110,6cyclictest0-21swapper/020:38:260
5944992110,5cyclictest0-21swapper/022:28:280
5944992110,0cyclictest0-21swapper/022:21:100
1923822110,0sleep00-21swapper/000:11:550
594599206,7cyclictest19535-21diskmemload23:38:191
594599205,9cyclictest0-21swapper/121:34:001
594599202,2cyclictest0-21swapper/121:08:491
5945992018,2cyclictest24479-21snmpd00:22:441
5945992011,3cyclictest13083-21kworker/u4:222:33:281
5945992010,5cyclictest0-21swapper/122:16:341
5945992010,5cyclictest0-21swapper/119:20:391
594599200,10cyclictest0-21swapper/120:03:181
594499207,4cyclictest3705-21/usr/sbin/munin20:23:290
594499202,8cyclictest0-21swapper/023:42:280
5944992015,3cyclictest21508-21apache223:05:590
5944992014,4cyclictest0-21swapper/020:48:310
594499201,1cyclictest0-21swapper/000:28:060
5944992011,6cyclictest0-21swapper/023:53:200
5944992011,4cyclictest100150irq/106-eth1-rx23:58:520
5944992010,6cyclictest0-21swapper/023:12:160
5944992010,5cyclictest0-21swapper/021:58:200
5944992010,4cyclictest0-21swapper/000:21:380
5944992010,3cyclictest0-21swapper/019:43:240
594499200,6cyclictest0-21swapper/021:27:000
1341022010,0sleep00-21swapper/021:43:270
594599193,12cyclictest0-21swapper/120:23:221
594599192,9cyclictest0-21swapper/121:03:261
5945991911,6cyclictest0-21swapper/120:02:491
5945991910,6cyclictest0-21swapper/119:10:531
5945991910,5cyclictest100150irq/106-eth1-rx23:24:041
5945991910,4cyclictest0-21swapper/123:03:171
5945991910,3cyclictest0-21swapper/120:13:261
5945991910,2cyclictest0-21swapper/121:58:281
594499197,4cyclictest23616-21/usr/sbin/munin21:13:210
5944991910,7cyclictest0-21swapper/022:36:350
5944991910,4cyclictest0-21swapper/020:13:070
5944991910,3cyclictest0-21swapper/023:13:320
5944991910,3cyclictest0-21swapper/019:48:220
5944991910,2cyclictest0-21swapper/000:03:260
2848721910,0sleep10-21swapper/122:51:491
594599185,6cyclictest0-21swapper/120:28:221
594599184,8cyclictest0-21swapper/121:13:251
594599182,12cyclictest0-21swapper/119:23:251
5945991817,1cyclictest21482-21apache200:32:391
5945991812,5cyclictest802-21apache223:56:051
5945991812,4cyclictest0-21swapper/122:23:261
5945991810,4cyclictest0-21swapper/121:53:271
5945991810,3cyclictest0-21swapper/123:18:221
5945991810,2cyclictest0-21swapper/100:33:251
594499187,8cyclictest0-21swapper/020:33:280
5944991812,5cyclictest18840-1kworker/u5:121:54:000
5944991810,4cyclictest0-21swapper/019:38:280
5944991810,3cyclictest0-21swapper/022:03:270
5944991810,2cyclictest0-21swapper/022:08:310
594499180,1cyclictest0-21swapper/022:39:460
594599174,1cyclictest21324-21apache_processe19:48:171
594599172,11cyclictest0-21swapper/120:53:211
5945991710,3cyclictest0-21swapper/122:04:131
594599170,16cyclictest8566-21ls19:13:231
594499174,10cyclictest0-21swapper/021:48:200
5944991715,2cyclictest21482-21apache220:46:150
5944991710,2cyclictest0-21swapper/020:03:270
1860321710,1sleep10-21swapper/100:09:361
594599163,9cyclictest0-21swapper/119:43:241
5945991610,4cyclictest0-21swapper/120:33:181
5945991610,4cyclictest0-21swapper/100:14:511
5945991610,0cyclictest0-21swapper/119:53:201
594599160,6cyclictest0-21swapper/119:33:201
594599160,10cyclictest0-21swapper/120:08:211
594499161,9cyclictest0-21swapper/019:53:240
5944991611,4cyclictest0-21swapper/021:03:220
5944991611,2cyclictest0-21swapper/020:56:170
5944991611,1cyclictest0-21swapper/020:58:210
5944991610,1cyclictest0-21swapper/019:23:290
594599152,6cyclictest0-21swapper/120:48:211
594499152,9cyclictest0-21swapper/019:18:180
594499152,7cyclictest0-21swapper/023:49:190
594499142,9cyclictest0-21swapper/019:37:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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