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2026-04-23 - 09:53
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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 highest latencies:
System rackcslot2.osadl.org (updated Thu Apr 23, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2618021060,2sleep02416699cyclictest22:23:000
2210126833,30sleep10-21swapper/119:04:071
2396526653,8sleep00-21swapper/019:08:540
24167992927,1cyclictest0-21swapper/123:02:111
2416799290,1cyclictest0-21swapper/123:30:551
24167992825,2cyclictest231ktimersoftd/100:27:451
24166992826,1cyclictest81ktimersoftd/021:56:240
24167992710,13cyclictest0-21swapper/122:11:471
2416799267,10cyclictest0-21swapper/121:34:181
2416799261,3cyclictest0-21swapper/100:21:531
2416799250,1cyclictest17597-21sed21:24:251
2416699251,0cyclictest12964-21/usr/sbin/munin20:04:190
24167992424,0cyclictest0-21swapper/122:51:551
24167992410,6cyclictest0-21swapper/123:20:411
24166992410,14cyclictest0-21swapper/023:44:070
24166992410,0cyclictest0-21swapper/000:38:030
2416799235,14cyclictest0-21swapper/120:24:181
24167992310,7cyclictest0-21swapper/123:17:411
24167992310,5cyclictest0-21swapper/122:28:511
24167992310,3cyclictest0-21swapper/120:44:171
2416699237,8cyclictest0-21swapper/023:59:270
24166992310,10cyclictest30998-21ssh23:58:280
24167992217,4cyclictest744-21snmpd20:02:521
2416799220,14cyclictest0-21swapper/122:54:171
24166992221,0cyclictest7-21ksoftirqd/020:43:240
24166992219,3cyclictest25818-21apache220:57:420
24166992216,4cyclictest25845-21apache222:01:400
24166992213,8cyclictest15088-21chrt23:36:560
24166992212,3cyclictest100250irq/107-eth1-rx21:29:520
24166992210,8cyclictest0-21swapper/000:19:170
24166992210,6cyclictest0-21swapper/000:18:000
24166992210,5cyclictest0-21swapper/023:49:370
2416799218,8cyclictest0-21swapper/123:04:191
2416799216,7cyclictest1734-21/usr/sbin/munin20:59:251
2416799216,14cyclictest0-21swapper/121:17:241
2416799214,9cyclictest0-21swapper/122:29:201
24167992120,1cyclictest802-21apache223:35:301
24167992119,1cyclictest26028-21kworker/u4:122:19:181
24167992118,2cyclictest25818-21apache222:00:531
24167992112,3cyclictest0-21swapper/121:39:201
24167992110,7cyclictest0-21swapper/119:38:211
24167992110,5cyclictest0-21swapper/120:49:181
24167992110,0cyclictest0-21swapper/123:26:111
2416699213,6cyclictest0-21swapper/023:39:540
24166992120,1cyclictest0-21swapper/023:05:140
24166992110,9cyclictest0-21swapper/022:09:200
24166992110,9cyclictest0-21swapper/000:26:090
24166992110,7cyclictest0-21swapper/019:34:180
24166992110,3cyclictest0-21swapper/022:51:170
2416699210,19cyclictest0-21swapper/020:44:130
728922010,0sleep00-21swapper/022:41:040
361022010,0sleep00-21swapper/022:36:070
2416799204,12cyclictest0-21swapper/120:29:251
24167992010,6cyclictest0-21swapper/123:59:201
24167992010,5cyclictest0-21swapper/123:13:141
24167992010,5cyclictest0-21swapper/122:34:221
24167992010,5cyclictest0-21swapper/121:56:231
24167992010,5cyclictest0-21swapper/120:09:271
24167992010,3cyclictest0-21swapper/122:06:421
24167992010,2cyclictest0-21swapper/100:29:431
2416699202,11cyclictest0-21swapper/021:27:390
24166992013,3cyclictest100150irq/106-eth1-rx22:33:040
24166992011,1cyclictest91rcu_preempt21:53:420
24166992010,3cyclictest0-21swapper/022:59:170
2941721910,0sleep10-21swapper/119:19:431
2750021910,0sleep10-21swapper/123:54:031
2601621910,1sleep10-21swapper/120:36:361
2416799193,9cyclictest0-21swapper/121:44:221
2416799193,11cyclictest0-21swapper/123:44:191
2416799192,14cyclictest0-21swapper/100:34:221
24167991916,1cyclictest231ktimersoftd/121:29:381
24167991911,5cyclictest100150irq/106-eth1-rx20:07:131
24167991910,6cyclictest0-21swapper/120:39:241
24167991910,6cyclictest0-21swapper/100:12:541
24167991910,5cyclictest0-21swapper/123:39:211
24167991910,3cyclictest0-21swapper/121:09:171
24167991910,1cyclictest0-21swapper/121:07:401
2416799190,11cyclictest0-21swapper/120:19:231
2416799190,11cyclictest0-21swapper/120:19:231
2416699197,9cyclictest0-21swapper/019:44:180
2416699195,7cyclictest0-21swapper/021:19:180
2416699194,7cyclictest0-21swapper/019:09:210
2416699194,7cyclictest0-21swapper/000:04:240
2416699191,16cyclictest5405-21diskmemload23:10:340
24166991910,5cyclictest0-21swapper/019:19:170
24166991910,4cyclictest0-21swapper/021:43:360
2416699190,10cyclictest0-21swapper/019:14:190
1917321910,0sleep00-21swapper/022:58:490
2416799183,8cyclictest0-21swapper/120:54:251
2416799183,6cyclictest28817-21python23:54:251
2416799182,7cyclictest0-21swapper/119:54:241
24167991811,6cyclictest25260-21kworker/1:019:46:141
2416799181,11cyclictest0-21swapper/121:21:071
24167991810,5cyclictest0-21swapper/122:47:011
24167991810,4cyclictest0-21swapper/121:49:171
24167991810,1cyclictest0-21swapper/119:13:391
2416799180,1cyclictest0-21swapper/122:42:281
2416699186,11cyclictest0-21swapper/019:54:280
2416699185,6cyclictest6339-21df00:09:190
2416699184,8cyclictest0-21swapper/022:14:200
2416699184,10cyclictest0-21swapper/022:24:180
2416699184,10cyclictest0-21swapper/019:39:180
2416699183,6cyclictest0-21swapper/000:29:260
24166991816,1cyclictest2996-21sed20:59:280
24166991812,5cyclictest25845-21apache223:22:010
24166991810,4cyclictest0-21swapper/023:31:110
24166991810,2cyclictest0-21swapper/023:14:250
24166991810,1cyclictest0-21swapper/023:25:070
24166991810,1cyclictest0-21swapper/021:44:470
100921810,0sleep00-21swapper/019:31:210
2416799176,7cyclictest0-21swapper/119:39:201
2416799174,8cyclictest0-21swapper/119:29:201
2416799173,12cyclictest0-21swapper/120:14:171
24167991715,1cyclictest32302sleep100:04:131
24167991711,0cyclictest0-21swapper/122:16:251
24167991710,7cyclictest0-21swapper/119:52:491
24167991710,4cyclictest0-21swapper/100:14:181
24167991710,1cyclictest0-21swapper/119:24:071
24167991710,0cyclictest0-21swapper/119:15:151
2416699175,9cyclictest0-21swapper/021:34:180
2416699173,6cyclictest0-21swapper/020:34:210
2416699173,6cyclictest0-21swapper/020:24:140
2416699173,6cyclictest0-21swapper/020:19:270
2416699173,6cyclictest0-21swapper/020:19:270
2416699173,5cyclictest0-21swapper/022:07:350
24166991710,4cyclictest0-21swapper/022:46:050
24166991710,4cyclictest0-21swapper/019:24:220
24166991710,3cyclictest0-21swapper/021:18:120
24166991710,1cyclictest0-21swapper/021:12:450
24166991710,1cyclictest0-21swapper/019:59:190
3177321610,0sleep00-21swapper/020:51:390
2416699164,6cyclictest22550-21apache_accesses20:29:170
24166991610,3cyclictest0-21swapper/021:04:170
24166991610,2cyclictest0-21swapper/019:53:470
24166991510,5cyclictest0-21swapper/020:18:200
2416699143,8cyclictest0-21swapper/020:09:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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