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2026-09-21 - 03:42
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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 Mon Sep 21, 2026 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
484727663,8sleep00-21swapper/019:07:060
448427056,9sleep10-21swapper/119:03:191
110512630,0sleep10-21swapper/121:42:491
510099377,6cyclictest7-21ksoftirqd/019:48:110
510099364,1cyclictest91rcu_preempt21:19:330
5100993533,1cyclictest81ktimersoftd/022:53:100
5100993510,24cyclictest0-21swapper/000:11:590
510099348,4cyclictest91rcu_preempt23:53:320
510099339,2cyclictest91rcu_preempt19:30:440
510099334,2cyclictest91rcu_preempt00:04:000
510099324,2cyclictest91rcu_preempt22:01:020
5100993225,3cyclictest7-21ksoftirqd/020:23:040
5100993220,4cyclictest91rcu_preempt22:29:200
5100993210,3cyclictest91rcu_preempt20:32:170
510099319,10cyclictest91rcu_preempt00:21:400
510099317,1cyclictest91rcu_preempt23:00:110
510099315,1cyclictest91rcu_preempt23:30:140
5100993129,1cyclictest7-21ksoftirqd/021:13:090
510099303,4cyclictest91rcu_preempt23:59:380
5100993017,3cyclictest91rcu_preempt19:19:580
510099290,27cyclictest0-21swapper/021:32:290
5101992810,0cyclictest0-21swapper/100:02:401
510099287,6cyclictest91rcu_preempt22:37:550
5100992822,2cyclictest7-21ksoftirqd/023:13:130
5101992725,1cyclictest0-21swapper/121:49:481
510099277,3cyclictest91rcu_preempt23:45:340
510099275,2cyclictest91rcu_preempt23:18:380
5100992722,3cyclictest7953-21ssh23:12:140
5100992721,3cyclictest7-21ksoftirqd/021:51:440
5100992710,13cyclictest0-21swapper/021:24:340
510099270,17cyclictest0-21swapper/022:08:110
510199260,10cyclictest0-21swapper/122:23:031
510099264,5cyclictest7-21ksoftirqd/000:33:020
510099264,2cyclictest91rcu_preempt23:22:510
5100992625,0cyclictest7-21ksoftirqd/021:53:040
5100992624,1cyclictest3842-21ntp_states22:18:090
5100992623,2cyclictest12913-21munin-run20:52:510
5100992621,5cyclictest16306-21apache222:37:000
5101992525,0cyclictest0-21swapper/122:07:361
5100992522,3cyclictest19249-21/usr/sbin/munin19:43:070
5100992522,2cyclictest699-21ls20:18:110
5100992522,2cyclictest16924-21diskstats19:38:040
5100992522,2cyclictest15848-21timerwakeupswit19:33:120
5100992521,3cyclictest23636-21ssh22:48:000
5100992521,2cyclictest81ktimersoftd/022:43:100
5100992511,4cyclictest81ktimersoftd/020:38:030
5100992510,15cyclictest0-21swapper/000:15:400
5101992410,10cyclictest0-21swapper/121:37:181
510099244,19cyclictest7-21ksoftirqd/021:12:460
5100992422,2cyclictest7-21ksoftirqd/023:38:110
510099242,1cyclictest91rcu_preempt23:48:410
5100992421,2cyclictest28198-21apache_accesses20:08:020
5100992421,2cyclictest2772-21ls23:03:110
5100992421,2cyclictest23349-21if_eth200:23:040
5100992420,3cyclictest25870-21/usr/sbin/munin22:03:080
5100992420,3cyclictest24570-21ls19:58:020
5100992419,3cyclictest7-21ksoftirqd/022:23:270
5100992418,2cyclictest7-21ksoftirqd/021:42:510
510099241,3cyclictest91rcu_preempt21:39:400
5100992410,4cyclictest0-21swapper/020:03:030
510199235,13cyclictest0-21swapper/119:48:041
5101992310,6cyclictest0-21swapper/122:56:461
5101992310,5cyclictest0-21swapper/121:53:031
510199230,22cyclictest0-21swapper/122:28:061
5100992321,1cyclictest23073-21memory19:53:070
5100992320,2cyclictest9657-21if_err_eth120:43:050
5100992318,4cyclictest10884-21apache_accesses19:23:020
5100992315,2cyclictest7-21ksoftirqd/000:29:280
5100992310,4cyclictest0-21swapper/021:03:040
1808522310,1sleep10-21swapper/119:39:081
510199225,13cyclictest0-21swapper/121:18:021
5101992220,2cyclictest0-21swapper/121:46:361
5101992217,4cyclictest16306-21apache222:08:081
5101992214,4cyclictest0-21swapper/122:47:321
5101992211,7cyclictest0-21swapper/120:48:021
5101992210,6cyclictest0-21swapper/123:13:221
5101992210,6cyclictest0-21swapper/121:04:261
510199220,21cyclictest24598-21sshd21:14:391
5100992220,1cyclictest15007-21apache_volume20:57:590
5100992219,2cyclictest5030-21/usr/sbin/munin21:33:070
5100992219,2cyclictest32062-21apache_processe22:13:030
5100992216,2cyclictest121rcuc/023:33:060
5100992210,8cyclictest0-21swapper/020:53:070
5101992120,1cyclictest16277-21apache200:10:271
5101992114,2cyclictest0-21swapper/123:49:261
5101992111,7cyclictest0-21swapper/122:58:111
5101992110,7cyclictest0-21swapper/100:13:071
5101992110,5cyclictest0-21swapper/122:33:061
5101992110,3cyclictest0-21swapper/122:48:131
510199210,9cyclictest0-21swapper/122:13:031
510199210,15cyclictest0-21swapper/123:09:551
5100992118,2cyclictest30432-21sort20:13:030
5100992115,5cyclictest0-21swapper/019:08:080
510199206,6cyclictest0-21swapper/120:18:101
510199204,8cyclictest0-21swapper/120:28:091
510199204,10cyclictest13365-21ssh00:07:511
5101992016,3cyclictest16277-21apache221:29:291
510199201,3cyclictest0-21swapper/123:38:201
5101992013,3cyclictest5098-21cyclictest22:18:091
5101992010,4cyclictest0-21swapper/123:23:311
5101992010,1cyclictest0-21swapper/121:58:111
510199200,17cyclictest0-21swapper/100:33:091
5100992018,1cyclictest5741-21hddtemp_smartct20:33:030
510199198,7cyclictest0-21swapper/120:38:081
5101991911,6cyclictest0-21swapper/119:53:021
5101991911,4cyclictest0-21swapper/119:13:111
5101991910,3cyclictest0-21swapper/119:08:081
5101991910,2cyclictest0-21swapper/119:58:011
510199190,3cyclictest0-21swapper/100:20:121
5100991913,3cyclictest81ktimersoftd/019:13:030
510199189,6cyclictest10884-21apache_accesses19:23:021
510199186,11cyclictest0-21swapper/123:33:061
510199185,9cyclictest0-21swapper/121:08:091
510199185,3cyclictest1199-21runrttasks21:02:071
510199182,10cyclictest0-21swapper/123:28:031
5101991817,1cyclictest0-21swapper/123:22:141
5101991817,1cyclictest0-21swapper/123:07:131
510199181,12cyclictest0-21swapper/123:55:291
510199181,10cyclictest0-21swapper/120:53:081
5101991810,5cyclictest0-21swapper/122:38:021
5101991810,5cyclictest0-21swapper/119:43:241
5101991810,3cyclictest0-21swapper/120:33:021
5101991810,3cyclictest0-21swapper/100:23:101
510199174,10cyclictest0-21swapper/121:23:061
510199173,4cyclictest29135-21/usr/sbin/munin23:43:071
510199171,13cyclictest0-21swapper/119:18:111
5101991710,5cyclictest0-21swapper/119:28:111
5101991710,3cyclictest0-21swapper/120:03:101
5101991610,3cyclictest0-21swapper/119:33:041
5101991610,2cyclictest0-21swapper/120:13:021
5101991610,2cyclictest0-21swapper/120:08:021
510199160,1cyclictest0-21swapper/100:30:491
510199154,8cyclictest0-21swapper/120:43:021
5101991510,1cyclictest0-21swapper/120:23:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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