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2026-08-31 - 14:08
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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 Mon Aug 31, 2026 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
843627149,17sleep10-21swapper/119:03:241
896727049,8sleep00-21swapper/019:06:100
9326993210,1cyclictest28049-21kworker/u4:222:49:061
9325993210,20cyclictest0-21swapper/022:17:260
932699290,28cyclictest8537-21kworker/u4:123:08:201
9326992810,18cyclictest0-21swapper/122:02:121
9325992625,1cyclictest0-21swapper/000:11:250
932699259,15cyclictest17843-21kworker/1:223:45:311
9326992512,5cyclictest0-21swapper/123:06:491
9326992510,5cyclictest0-21swapper/121:38:121
9326992510,10cyclictest0-21swapper/122:19:541
9325992524,1cyclictest0-21swapper/019:22:010
9325992517,5cyclictest5890-21apache222:57:160
9325992510,10cyclictest0-21swapper/023:01:490
9326992410,9cyclictest100350irq/108-eth1-tx21:17:591
9326992410,5cyclictest0-21swapper/119:53:171
932599243,20cyclictest16145-21runrttasks22:28:430
9325992418,5cyclictest5863-21apache221:38:420
9325992410,8cyclictest0-21swapper/000:05:070
9325992410,4cyclictest0-21swapper/023:15:090
9325992410,12cyclictest0-21swapper/021:33:000
9326992320,0cyclictest9323-21cyclictest21:28:161
932699231,20cyclictest3079-21kworker/1:020:04:431
9326992310,7cyclictest0-21swapper/121:48:181
932699230,1cyclictest0-21swapper/122:33:591
9325992323,0cyclictest0-21swapper/021:22:570
9325992310,7cyclictest0-21swapper/021:43:090
9325992310,0cyclictest0-21swapper/021:50:030
932599230,6cyclictest28743-21ssh23:33:550
932699224,5cyclictest22905-21diskmemload22:43:191
9326992218,2cyclictest0-21swapper/120:53:141
9326992213,4cyclictest5863-21apache221:36:591
9326992210,9cyclictest0-21swapper/123:32:331
9326992210,5cyclictest0-21swapper/100:14:551
9326992210,2cyclictest0-21swapper/121:53:181
9325992210,7cyclictest0-21swapper/023:24:380
9325992210,4cyclictest0-21swapper/023:58:170
9325992210,1cyclictest0-21swapper/020:48:210
932699216,14cyclictest3079-21kworker/1:019:47:111
932699214,11cyclictest0-21swapper/100:33:111
9326992110,9cyclictest0-21swapper/100:28:571
9326992110,6cyclictest18644-21ssh23:19:441
9326992110,6cyclictest0-21swapper/122:40:181
9326992110,5cyclictest0-21swapper/122:54:221
9326992110,5cyclictest0-21swapper/120:48:141
932599217,9cyclictest0-21swapper/019:58:190
932599214,9cyclictest0-21swapper/020:33:120
932599212,7cyclictest0-21swapper/023:43:170
9325992121,0cyclictest0-21swapper/023:19:170
9325992120,1cyclictest0-21swapper/020:22:550
9325992110,5cyclictest0-21swapper/023:28:190
9325992110,5cyclictest0-21swapper/021:10:030
9325992110,1cyclictest0-21swapper/022:23:130
932599210,16cyclictest0-21swapper/000:27:260
932699204,11cyclictest0-21swapper/120:28:161
932699203,14cyclictest0-21swapper/123:23:141
932699202,14cyclictest0-21swapper/120:23:171
9326992016,3cyclictest5863-21apache223:33:231
9326992015,1cyclictest0-21swapper/122:14:531
932699201,3cyclictest0-21swapper/122:11:331
9326992010,6cyclictest0-21swapper/123:58:171
9326992010,5cyclictest0-21swapper/121:44:081
9326992010,4cyclictest0-21swapper/122:03:121
9326992010,1cyclictest0-21swapper/122:29:131
9326992010,0cyclictest100250irq/107-eth1-rx21:27:281
932699200,4cyclictest0-21swapper/100:21:551
932699200,2cyclictest0-21swapper/121:10:071
932699200,19cyclictest5716-21memory23:48:161
932599205,8cyclictest21199-21/usr/sbin/munin21:03:140
932599203,4cyclictest21314-21sendmail-msp22:38:010
932599203,16cyclictest0-21swapper/022:09:490
9325992012,5cyclictest9323-21cyclictest23:39:370
9325992011,5cyclictest0-21swapper/022:48:120
9325992010,6cyclictest0-21swapper/019:48:150
9325992010,4cyclictest0-21swapper/023:10:200
9325992010,4cyclictest0-21swapper/022:43:110
9325992010,4cyclictest0-21swapper/000:13:180
9325992010,1cyclictest0-21swapper/020:55:220
2093722010,0sleep10-21swapper/100:10:471
142322010,0sleep00-21swapper/021:23:050
932699197,11cyclictest0-21swapper/120:08:151
932699191,12cyclictest0-21swapper/121:18:151
9326991910,6cyclictest5863-21apache222:26:071
9326991910,6cyclictest0-21swapper/100:25:031
9326991910,4cyclictest0-21swapper/123:01:321
9326991910,4cyclictest0-21swapper/120:18:151
9326991910,3cyclictest0-21swapper/123:53:171
9326991910,3cyclictest0-21swapper/100:03:071
932599197,9cyclictest0-21swapper/021:37:540
932599192,8cyclictest0-21swapper/021:53:200
9325991910,6cyclictest0-21swapper/022:18:200
9325991910,4cyclictest0-21swapper/023:53:390
9325991910,4cyclictest0-21swapper/020:07:560
9325991910,4cyclictest0-21swapper/019:43:160
9325991910,3cyclictest0-21swapper/023:03:190
9325991910,3cyclictest0-21swapper/019:38:140
932599190,8cyclictest0-21swapper/022:07:140
712621910,0sleep00-21swapper/023:50:050
932699185,7cyclictest0-21swapper/119:23:191
932699185,12cyclictest0-21swapper/119:09:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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