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2025-12-21 - 12:38
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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 all highest latencies:
System rackcslot2.osadl.org (updated Sun Dec 21, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1280127049,8sleep10-21swapper/119:08:131
1282026957,8sleep00-21swapper/019:08:240
13150993029,1cyclictest0-21swapper/123:15:461
13150992719,7cyclictest21554-21apache220:02:431
13149992611,2cyclictest0-21swapper/023:48:430
1315099253,1cyclictest91rcu_preempt23:25:101
1315099250,1cyclictest24-21ksoftirqd/123:41:221
13150992423,0cyclictest29984-21grep21:15:201
1315099238,9cyclictest231ktimersoftd/122:05:181
1315099236,2cyclictest91rcu_preempt23:08:261
13150992323,0cyclictest0-21swapper/100:10:141
13150992320,2cyclictest802-21apache223:47:001
13150992318,1cyclictest231ktimersoftd/120:05:151
1315099229,11cyclictest24-21ksoftirqd/120:57:561
1315099225,11cyclictest0-21swapper/122:10:101
13150992218,3cyclictest4496-21hddtemp_smartct21:35:121
13150992218,1cyclictest24-21ksoftirqd/120:32:471
13150992217,3cyclictest24-21ksoftirqd/123:50:161
13150992210,7cyclictest0-21swapper/100:09:581
1315099220,4cyclictest744-21snmpd22:30:171
1315099220,21cyclictest30489-21apache_processe19:55:111
13149992221,1cyclictest7-21ksoftirqd/019:59:580
13149992218,3cyclictest21554-21apache223:00:150
13149992210,6cyclictest0-21swapper/023:05:160
13149992210,6cyclictest0-21swapper/022:25:100
1315099216,1cyclictest91rcu_preempt22:40:111
1315099213,12cyclictest0-21swapper/122:35:101
13150992120,0cyclictest24-21ksoftirqd/120:50:111
13150992113,4cyclictest0-21swapper/119:25:201
13150992110,6cyclictest0-21swapper/120:35:101
1315099210,1cyclictest91rcu_preempt20:45:111
13149992120,0cyclictest7-21ksoftirqd/022:00:140
13149992119,1cyclictest7-21ksoftirqd/020:49:580
13149992119,0cyclictest7-21ksoftirqd/023:23:280
13149992115,3cyclictest7-21ksoftirqd/021:00:180
13149992110,4cyclictest0-21swapper/020:01:330
13149992110,4cyclictest0-21swapper/019:35:110
13149992110,3cyclictest0-21swapper/021:35:110
1314999210,20cyclictest0-21swapper/021:51:390
3188222010,0sleep00-21swapper/000:10:140
1315099204,7cyclictest0-21swapper/121:55:111
1315099203,3cyclictest91rcu_preempt19:30:131
1315099202,6cyclictest0-21swapper/119:50:191
1315099202,10cyclictest32530-21cron21:24:571
13150992017,2cyclictest28212-21users21:10:181
13150992017,2cyclictest15859-21ntp_states19:15:161
13150992017,2cyclictest12341-21diskstats23:20:131
13150992016,3cyclictest24-21ksoftirqd/120:25:151
1315099200,2cyclictest91rcu_preempt22:01:321
1315099200,1cyclictest91rcu_preempt21:00:401
1315099200,12cyclictest0-21swapper/122:15:101
1314999206,6cyclictest17870-21apache_accesses23:35:120
1314999205,12cyclictest0-21swapper/000:24:070
1314999204,11cyclictest0-21swapper/019:40:110
1314999203,9cyclictest0-21swapper/020:30:130
13149992019,1cyclictest21554-21apache221:45:240
13149992018,1cyclictest7-21ksoftirqd/019:34:570
13149992015,4cyclictest21554-21apache221:56:060
13149992011,4cyclictest0-21swapper/023:40:190
13149992011,3cyclictest7-21ksoftirqd/021:20:120
13149992010,6cyclictest0-21swapper/019:54:440
13149992010,6cyclictest0-21swapper/019:47:070
13149992010,5cyclictest0-21swapper/021:30:140
13149992010,1cyclictest0-21swapper/020:15:180
1842921910,1sleep10-21swapper/119:21:331
1315099197,8cyclictest8275-21apache_volume23:10:091
13150991917,1cyclictest4276-21munin-run22:59:571
13150991917,1cyclictest31845-21ntp_states22:45:161
13150991916,2cyclictest5765-21/usr/sbin/munin00:25:191
13150991914,4cyclictest7161-21/usr/sbin/munin00:30:131
13150991911,3cyclictest231ktimersoftd/121:50:101
13150991910,6cyclictest0-21swapper/123:00:121
13150991910,3cyclictest0-21swapper/120:20:131
13150991910,3cyclictest0-21swapper/119:40:141
1315099190,10cyclictest0-21swapper/122:25:111
1314999193,9cyclictest0-21swapper/022:10:100
1314999192,11cyclictest0-21swapper/000:00:180
13149991910,7cyclictest0-21swapper/019:21:060
13149991910,6cyclictest0-21swapper/022:44:380
13149991910,4cyclictest0-21swapper/023:30:130
13149991910,4cyclictest0-21swapper/020:55:160
13149991910,4cyclictest0-21swapper/020:20:130
13149991910,1cyclictest0-21swapper/019:29:570
352821810,0sleep10-21swapper/121:30:241
2499121810,0sleep00-21swapper/023:50:330
1685321810,0sleep00-21swapper/020:42:140
1315099186,7cyclictest0-21swapper/100:00:201
13150991818,0cyclictest21572-21apache221:07:511
13150991817,1cyclictest13147-21cyclictest20:15:131
13150991813,1cyclictest0-21swapper/100:17:481
13150991810,6cyclictest0-21swapper/120:40:091
13150991810,4cyclictest0-21swapper/122:24:401
13150991810,3cyclictest0-21swapper/121:40:101
13150991810,1cyclictest91rcu_preempt20:11:121
1314999189,3cyclictest0-21swapper/023:25:100
1314999183,6cyclictest0-21swapper/021:15:110
1314999182,9cyclictest0-21swapper/000:35:080
13149991818,0cyclictest0-21swapper/022:20:090
13149991815,2cyclictest7-21ksoftirqd/000:15:170
13149991815,2cyclictest0-21swapper/019:15:180
13149991814,1cyclictest8998-21/usr/sbin/munin23:10:140
1314999181,10cyclictest0-21swapper/022:15:100
13149991810,6cyclictest0-21swapper/000:05:130
13149991810,4cyclictest81ktimersoftd/021:25:130
13149991810,4cyclictest0-21swapper/020:25:130
13149991810,3cyclictest0-21swapper/022:45:100
13149991810,2cyclictest0-21swapper/022:50:170
1315099175,9cyclictest0-21swapper/122:50:131
1315099174,10cyclictest0-21swapper/123:30:141
13150991715,1cyclictest26600-21python23:55:171
13150991713,2cyclictest231ktimersoftd/119:45:141
13150991710,4cyclictest0-21swapper/119:10:151
13150991710,3cyclictest0-21swapper/100:20:101
1314999174,10cyclictest0-21swapper/023:16:170
1314999172,6cyclictest0-21swapper/022:30:140
13149991716,0cyclictest7-21ksoftirqd/022:05:140
13149991715,1cyclictest744-21snmpd21:10:030
13149991710,4cyclictest0-21swapper/000:25:160
13149991710,2cyclictest0-21swapper/022:35:180
1314999170,0cyclictest0-21swapper/020:35:200
1315099167,7cyclictest8120-21cat21:45:091
13150991614,1cyclictest19047-21ls23:35:211
13150991613,2cyclictest21572-21apache221:26:411
1315099160,9cyclictest744-21snmpd19:35:111
13149991614,1cyclictest7-21ksoftirqd/022:59:160
13149991610,4cyclictest9628-21kworker/0:221:08:270
13149991610,3cyclictest0-21swapper/019:10:110
1314999160,10cyclictest0-21swapper/020:10:150
13150991510,4cyclictest0-21swapper/100:35:181
1314999151,7cyclictest0-21swapper/020:05:160
13149991512,1cyclictest0-21swapper/023:57:250
13149991510,3cyclictest0-21swapper/000:30:080
1314999142,5cyclictest0-21swapper/020:50:090
1314999141,4cyclictest7-21ksoftirqd/021:40:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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