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2026-09-11 - 14:46
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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 792 highest latencies:
System rackcslot2.osadl.org (updated Fri Sep 11, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30622790,1sleep03053-21munin-run00:27:550
1233027055,8sleep00-21swapper/019:07:290
1221026957,8sleep10-21swapper/119:06:151
287832670,0sleep10-21swapper/121:10:351
12555994210,31cyclictest0-21swapper/121:53:111
12555994110,29cyclictest20365-21ssh00:03:161
12555993910,14cyclictest0-21swapper/123:24:241
12555993812,21cyclictest91rcu_preempt21:30:471
12555993811,26cyclictest0-21swapper/100:23:121
12555993810,28cyclictest0-21swapper/123:59:561
12555993810,28cyclictest0-21swapper/123:08:111
12555993810,27cyclictest0-21swapper/123:03:321
12555993810,25cyclictest0-21swapper/119:18:111
12555993810,24cyclictest0-21swapper/120:11:551
12555993810,23cyclictest0-21swapper/120:58:071
12555993810,20cyclictest0-21swapper/100:14:591
12555993810,15cyclictest0-21swapper/122:07:311
12555993810,11cyclictest0-21swapper/121:43:071
12555993714,11cyclictest91rcu_preempt00:32:211
12555993711,25cyclictest0-21swapper/119:13:111
12555993710,26cyclictest0-21swapper/123:53:101
12555993710,24cyclictest91rcu_preempt20:44:211
12555993613,19cyclictest91rcu_preempt19:33:201
12555993610,26cyclictest0-21swapper/123:20:231
12555993610,25cyclictest0-21swapper/120:56:271
12555993610,22cyclictest0-21swapper/122:34:441
12555993610,20cyclictest0-21swapper/120:52:271
12555993513,20cyclictest91rcu_preempt23:28:181
12555993510,6cyclictest0-21swapper/121:58:141
12555993510,2cyclictest0-21swapper/121:16:471
12555993510,24cyclictest0-21swapper/119:54:201
12555993510,24cyclictest0-21swapper/100:18:081
1255599350,34cyclictest31156-21memory23:33:121
12555993410,23cyclictest0-21swapper/123:41:331
12555993410,23cyclictest0-21swapper/123:02:101
12555993410,22cyclictest0-21swapper/121:27:181
12555993410,21cyclictest0-21swapper/120:23:101
12555993319,13cyclictest0-21swapper/121:18:171
1255599331,31cyclictest4303-21df_inode22:08:081
12555993310,8cyclictest0-21swapper/119:27:131
12555993310,5cyclictest0-21swapper/122:53:001
12555993310,22cyclictest0-21swapper/122:38:461
1255599330,7cyclictest0-21swapper/123:13:091
1255599330,32cyclictest32036-21diskstats19:58:081
1255599330,32cyclictest28605-21memory19:48:111
1255599322,29cyclictest14611-21munin-run20:37:551
12555993217,14cyclictest0-21swapper/123:51:051
12555993216,16cyclictest0-21swapper/122:23:101
12555993214,17cyclictest0-21swapper/121:35:441
1255599321,30cyclictest32047-21cat22:48:111
12555993210,6cyclictest91rcu_preempt21:51:121
12555993210,21cyclictest0-21swapper/122:44:531
12555993210,21cyclictest0-21swapper/122:16:491
12555993210,20cyclictest0-21swapper/120:28:261
12555993210,19cyclictest0-21swapper/122:28:141
12555993210,19cyclictest0-21swapper/119:38:151
12555993210,17cyclictest0-21swapper/100:10:451
1255599320,31cyclictest7096-21/usr/sbin/munin00:33:101
1255599320,31cyclictest1977-21/usr/sbin/munin20:03:121
1255599313,27cyclictest0-21swapper/122:18:111
12555993110,18cyclictest0-21swapper/121:38:151
1255599310,30cyclictest0-21swapper/119:32:551
12555993015,15cyclictest0-21swapper/120:42:501
12555993010,18cyclictest0-21swapper/121:06:091
12555993010,17cyclictest91rcu_preempt23:44:111
1255599291,27cyclictest0-21swapper/119:08:561
1255599290,28cyclictest7641-21irqstats20:18:101
12554992810,0cyclictest0-21swapper/022:11:060
12555992718,9cyclictest0-21swapper/119:45:401
12554992724,2cyclictest0-21swapper/022:27:260
12554992621,2cyclictest0-21swapper/019:58:130
1255599251,21cyclictest28833-21kworker/1:120:15:121
12554992510,2cyclictest0-21swapper/023:41:330
12554992423,0cyclictest7-21ksoftirqd/019:18:070
12554992419,4cyclictest18278-21apache223:54:260
12554992418,3cyclictest18250-21apache221:38:310
1255499240,2cyclictest0-21swapper/021:08:590
1255499240,12cyclictest0-21swapper/023:43:070
12554992310,5cyclictest0-21swapper/023:33:110
1255499230,1cyclictest0-21swapper/020:08:080
1255499230,17cyclictest0-21swapper/000:15:340
1255499224,13cyclictest0-21swapper/021:53:190
1255499223,11cyclictest0-21swapper/022:14:590
12554992218,3cyclictest18278-21apache219:49:490
1255499221,17cyclictest28568-21kworker/u4:223:47:570
12554992211,3cyclictest0-21swapper/020:53:130
12554992210,7cyclictest315182sleep022:47:320
12554992210,4cyclictest0-21swapper/023:12:310
12554992210,4cyclictest0-21swapper/021:48:050
12554992210,2cyclictest0-21swapper/021:19:400
12554992111,4cyclictest18278-21apache200:04:080
12554992110,7cyclictest0-21swapper/021:58:130
12554992110,5cyclictest0-21swapper/023:28:110
12554992110,3cyclictest0-21swapper/000:18:070
12554992110,2cyclictest0-21swapper/023:02:570
1255499210,20cyclictest0-21swapper/023:00:180
1255499206,8cyclictest26065-21apache_volume19:43:060
1255499205,5cyclictest636-21nscd23:18:270
12554992018,1cyclictest81ktimersoftd/020:06:530
12554992018,1cyclictest0-21swapper/023:15:190
12554992011,5cyclictest18250-21apache222:36:200
12554992011,3cyclictest0-21swapper/021:13:050
1255499201,13cyclictest0-21swapper/000:28:230
12554992010,7cyclictest0-21swapper/022:51:440
12554992010,3cyclictest0-21swapper/000:01:150
12554992010,0cyclictest0-21swapper/020:31:010
1255499194,10cyclictest0-21swapper/020:18:060
1255499191,10cyclictest0-21swapper/000:33:080
12554991910,7cyclictest0-21swapper/022:40:070
12554991910,7cyclictest0-21swapper/022:28:060
12554991910,5cyclictest0-21swapper/021:28:070
12554991910,2cyclictest0-21swapper/021:33:150
1255499190,2cyclictest0-21swapper/023:26:580
1255499185,6cyclictest0-21swapper/020:23:060
12554991813,4cyclictest18250-21apache222:18:330
12554991812,3cyclictest0-21swapper/019:38:060
1255499181,1cyclictest16690-21/usr/sbin/munin20:43:160
12554991810,4cyclictest0-21swapper/021:24:150
12554991810,2cyclictest0-21swapper/022:07:050
12554991810,2cyclictest0-21swapper/000:08:180
12554991810,1cyclictest0-21swapper/020:58:110
12554991810,1cyclictest0-21swapper/020:38:090
1255499172,4cyclictest22344-21cstates19:33:070
1255499171,9cyclictest0-21swapper/019:15:010
1255499171,8cyclictest0-21swapper/021:43:060
12554991710,4cyclictest0-21swapper/019:53:120
12554991710,3cyclictest636-21nscd22:55:280
12554991710,3cyclictest0-21swapper/020:33:070
12554991710,1cyclictest24681-21cut21:03:090
1255499170,8cyclictest0-21swapper/020:13:130
1255499165,3cyclictest19667-21/usr/sbin/munin19:23:150
12554991610,2cyclictest0-21swapper/020:48:080
12554991610,1cyclictest0-21swapper/019:08:080
12554991510,1cyclictest0-21swapper/019:31:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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