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2025-12-18 - 12:14
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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 Thu Dec 18, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1030026949,16sleep00-21swapper/019:07:180
1018326957,8sleep10-21swapper/119:06:071
1073599369,1cyclictest91rcu_preempt22:24:591
10735993610,3cyclictest91rcu_preempt20:49:551
10735993514,3cyclictest91rcu_preempt19:10:101
10735993322,3cyclictest91rcu_preempt00:15:331
10735993231,1cyclictest24-21ksoftirqd/121:25:131
10735993226,6cyclictest24-21ksoftirqd/122:36:141
10735993128,2cyclictest24-21ksoftirqd/119:26:301
10735993127,3cyclictest7216-21apache_accesses20:25:101
10735993110,0cyclictest0-21swapper/121:41:131
10734993110,18cyclictest0-21swapper/023:01:410
10735993028,1cyclictest1448-21apache_volume20:10:081
10735993026,3cyclictest11599-21fschecks_count22:00:121
10735993022,5cyclictest24-21ksoftirqd/121:05:441
10735992929,0cyclictest0-21swapper/100:33:381
10735992928,1cyclictest0-21swapper/123:55:371
10735992927,1cyclictest8309-21irqstats23:15:151
10735992927,1cyclictest27212-21ntp_states21:15:151
10735992926,2cyclictest32148-21diskstats20:05:131
10735992926,2cyclictest26839-21cron00:04:591
10735992926,2cyclictest13689-21python19:15:191
10735992925,3cyclictest28745-21cut22:45:111
1073499290,4cyclictest24922-21ls23:59:590
1073499290,28cyclictest0-21swapper/021:05:580
10735992826,1cyclictest7492-21apache_accesses21:50:081
10735992825,2cyclictest17486-21needreboot20:50:151
10735992825,2cyclictest14036-21if_eth223:30:141
10735992825,2cyclictest10286-21latency23:20:171
10735992825,2cyclictest0-21swapper/100:14:411
10735992725,2cyclictest0-21swapper/100:05:131
10735992724,2cyclictest3825-21latency_hist23:04:591
10735992724,2cyclictest19210-21chrt19:30:161
10735992724,2cyclictest0-21swapper/123:50:121
10735992724,2cyclictest0-21swapper/121:46:051
10735992722,4cyclictest19258-21irqstats20:55:141
1073499278,14cyclictest0-21swapper/021:14:380
1073499278,14cyclictest0-21swapper/021:14:380
10734992727,0cyclictest0-21swapper/019:35:210
10735992624,2cyclictest0-21swapper/123:35:201
10735992624,1cyclictest354-21grep00:20:101
10735992624,1cyclictest27376-21memory22:40:151
10735992623,2cyclictest7801-21seq00:39:151
10735992623,2cyclictest30132-21latency_hist21:24:591
10735992623,2cyclictest220552sleep121:00:581
10735992623,2cyclictest20696-21fschecks_time19:35:121
10735992623,2cyclictest18091-21sensors22:15:171
10735992623,2cyclictest15171-21apache_processe22:10:101
10735992623,2cyclictest14187-21grep20:40:201
10735992623,2cyclictest0-21swapper/100:25:471
10735992621,4cyclictest12244-21tail20:35:211
10735992618,7cyclictest26507-21tune2fs19:50:121
10735992610,5cyclictest91rcu_preempt23:05:451
10734992610,14cyclictest0-21swapper/021:25:430
10735992522,2cyclictest24-21ksoftirqd/122:30:171
10735992522,2cyclictest10496-21chrt20:31:051
10735992521,3cyclictest0-21swapper/119:46:281
10735992516,8cyclictest0-21swapper/122:05:101
10735992516,8cyclictest0-21swapper/120:15:191
1073599250,24cyclictest15787-21grep19:20:201
10734992523,1cyclictest7-21ksoftirqd/000:00:200
1073499250,0cyclictest0-21swapper/020:59:580
10735992421,3cyclictest0-21swapper/121:55:191
10735992421,2cyclictest323062sleep122:54:581
10735992421,2cyclictest23106-21ntp_states19:40:161
10735992420,3cyclictest32206-21apache_processe21:30:101
10735992418,5cyclictest5309-21apache_volume20:20:111
10735992417,5cyclictest24883-21hddtemp_smartct21:10:121
10735992417,5cyclictest24883-21hddtemp_smartct21:10:121
10735992413,7cyclictest231ktimersoftd/122:59:591
1073499243,15cyclictest0-21swapper/000:10:140
10734992418,3cyclictest1199-21runrttasks00:05:160
10735992320,3cyclictest0-21swapper/119:55:121
10735992320,2cyclictest0-21swapper/121:35:171
10735992319,3cyclictest19691-21hddtemp_smartct23:45:121
10735992317,1cyclictest24-21ksoftirqd/123:40:101
10734992323,0cyclictest0-21swapper/022:06:510
10734992321,2cyclictest19653-21apache221:20:120
10734992310,7cyclictest0-21swapper/023:25:100
10734992310,6cyclictest0-21swapper/021:40:150
10734992310,5cyclictest0-21swapper/022:40:160
10735992213,8cyclictest0-21swapper/123:26:531
1073599217,12cyclictest0-21swapper/120:00:121
10735992114,2cyclictest24-21ksoftirqd/123:10:111
10735992113,7cyclictest0-21swapper/122:25:431
1073499217,14cyclictest0-21swapper/019:43:040
1073499216,11cyclictest0-21swapper/000:25:110
10734992115,4cyclictest28927-21pmu-power19:55:150
10734992110,5cyclictest0-21swapper/019:10:390
10734992110,3cyclictest0-21swapper/020:30:470
10734992110,1cyclictest0-21swapper/021:30:120
1073499206,10cyclictest0-21swapper/022:00:140
10734992017,3cyclictest27644-21munin-node20:53:010
10734992014,4cyclictest0-21swapper/022:14:590
10734992010,7cyclictest0-21swapper/022:34:590
10734992010,6cyclictest0-21swapper/023:05:200
10734992010,5cyclictest0-21swapper/022:45:160
10734992010,2cyclictest0-21swapper/019:27:420
10734992010,0cyclictest0-21swapper/019:15:240
1073499195,10cyclictest0-21swapper/020:45:090
1073499193,5cyclictest18433-21/usr/sbin/munin19:30:150
1073499192,9cyclictest0-21swapper/021:15:140
10734991910,6cyclictest0-21swapper/020:20:110
10734991910,5cyclictest0-21swapper/022:25:110
10734991910,4cyclictest0-21swapper/021:50:170
10734991910,3cyclictest0-21swapper/023:45:120
10734991910,2cyclictest0-21swapper/020:15:110
1136921810,0sleep00-21swapper/023:24:150
1073499185,9cyclictest0-21swapper/000:35:110
1073499185,10cyclictest0-21swapper/023:30:150
10734991816,1cyclictest0-21swapper/022:15:160
10734991813,4cyclictest588-21in:imuxsock23:49:590
10734991811,4cyclictest0-21swapper/020:00:150
10734991811,4cyclictest0-21swapper/000:30:110
10734991810,5cyclictest0-21swapper/000:15:120
10734991810,4cyclictest0-21swapper/023:40:100
10734991810,4cyclictest0-21swapper/023:35:140
10734991810,3cyclictest0-21swapper/020:05:110
10734991810,2cyclictest0-21swapper/021:56:060
1073499174,8cyclictest0-21swapper/019:20:160
10734991710,5cyclictest0-21swapper/021:00:120
10734991710,4cyclictest32148-21kworker/0:123:12:210
10734991710,4cyclictest0-21swapper/020:35:210
10734991710,3cyclictest0-21swapper/020:27:080
10734991710,3cyclictest0-21swapper/019:53:400
10734991710,2cyclictest0-21swapper/021:35:110
1073499170,8cyclictest0-21swapper/022:50:100
10734991611,3cyclictest21795-21kworker/0:019:46:570
10734991611,2cyclictest24808-21/usr/sbin/munin22:35:200
10734991610,4cyclictest0-21swapper/022:58:530
10734991610,3cyclictest0-21swapper/022:20:100
10734991610,3cyclictest0-21swapper/020:10:090
10734991610,2cyclictest0-21swapper/020:40:110
1073499154,7cyclictest0-21swapper/023:15:110
1073499154,7cyclictest0-21swapper/000:20:150
10734991510,5cyclictest0-21swapper/021:49:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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