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2026-03-16 - 14:40
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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 Mar 16, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
852726957,8sleep10-21swapper/119:05:251
715626754,8sleep00-21swapper/019:04:310
9088993210,0cyclictest0-21swapper/100:19:451
9088992810,11cyclictest0-21swapper/123:07:341
9087992810,4cyclictest0-21swapper/023:49:160
908899264,5cyclictest0-21swapper/122:30:121
908899250,1cyclictest295412sleep122:46:211
908799253,21cyclictest0-21swapper/023:58:140
9087992521,2cyclictest32253-21apache222:04:190
9087992510,4cyclictest0-21swapper/023:03:130
908899243,6cyclictest0-21swapper/123:09:381
9088992418,5cyclictest32253-21apache222:43:341
908899241,1cyclictest7418-21ssh00:30:551
9088992411,8cyclictest0-21swapper/120:34:361
9088992410,3cyclictest0-21swapper/119:49:361
908799249,8cyclictest20242-21ssh21:49:270
9087992418,5cyclictest32253-21apache221:25:540
9087992410,7cyclictest0-21swapper/023:50:390
9087992410,5cyclictest0-21swapper/021:44:450
9088992323,0cyclictest0-21swapper/122:55:391
9088992322,1cyclictest947-21sendmail-mta21:36:271
9088992310,6cyclictest0-21swapper/123:50:021
9088992310,5cyclictest0-21swapper/100:04:341
9088992310,1cyclictest0-21swapper/121:52:551
9087992312,4cyclictest744-21snmpd22:29:210
9087992310,9cyclictest0-21swapper/022:59:150
9088992212,7cyclictest32227-21apache219:31:441
9088992211,8cyclictest100350irq/108-eth1-tx23:25:101
9088992211,4cyclictest0-21swapper/122:14:341
9088992210,3cyclictest0-21swapper/122:34:321
9088992210,10cyclictest0-21swapper/123:45:091
9088992210,0cyclictest0-21swapper/121:29:361
9087992220,1cyclictest32253-21apache223:41:500
9087992218,3cyclictest32227-21apache200:33:330
9087992217,5cyclictest0-21swapper/023:27:540
9087992217,4cyclictest25305-21munin-node19:54:470
9087992216,4cyclictest81ktimersoftd/021:54:420
9087992210,7cyclictest0-21swapper/023:59:370
908799220,1cyclictest28877-21rm22:44:420
3250722210,1sleep10-21swapper/121:20:581
908899216,8cyclictest0-21swapper/120:49:231
908899214,10cyclictest0-21swapper/120:09:401
9088992116,3cyclictest32253-21apache222:51:101
9088992111,9cyclictest0-21swapper/119:15:031
9088992111,4cyclictest0-21swapper/119:59:441
9088992110,6cyclictest0-21swapper/120:29:351
9088992110,5cyclictest0-21swapper/123:32:101
9088992110,5cyclictest0-21swapper/123:20:181
9088992110,5cyclictest0-21swapper/119:19:381
9088992110,4cyclictest0-21swapper/122:26:141
9088992110,4cyclictest0-21swapper/122:05:571
908899210,15cyclictest0-21swapper/121:28:211
9087992121,0cyclictest0-21swapper/000:15:000
9087992113,6cyclictest7799-21kworker/0:223:15:500
9087992111,3cyclictest0-21swapper/022:09:350
9087992110,9cyclictest0-21swapper/022:52:540
9087992110,8cyclictest0-21swapper/000:21:490
9087992110,7cyclictest0-21swapper/019:34:350
9087992110,6cyclictest0-21swapper/022:39:380
9087992110,5cyclictest0-21swapper/021:34:370
9087992110,4cyclictest0-21swapper/023:29:500
9087992110,2cyclictest0-21swapper/000:09:340
9087992110,0cyclictest0-21swapper/020:28:330
908799210,1cyclictest30937-21hddtemp_smartct21:19:360
908899203,10cyclictest0-21swapper/123:34:371
9088992019,0cyclictest0-21swapper/122:03:261
9088992012,3cyclictest0-21swapper/120:24:371
9088992010,6cyclictest0-21swapper/122:13:111
9088992010,5cyclictest0-21swapper/119:34:431
9088992010,5cyclictest0-21swapper/100:09:331
9088992010,4cyclictest0-21swapper/120:14:351
9088992010,3cyclictest0-21swapper/120:04:551
9088992010,2cyclictest0-21swapper/100:24:281
908799207,5cyclictest0-21swapper/019:09:340
908799205,7cyclictest0-21swapper/020:09:370
908799205,6cyclictest9276-21cron22:19:230
908799205,11cyclictest0-21swapper/020:04:400
9087992020,0cyclictest0-21swapper/022:33:270
9087992018,1cyclictest32227-21apache221:31:170
9087992015,3cyclictest32253-21apache222:07:090
9087992010,5cyclictest0-21swapper/022:34:410
9087992010,4cyclictest0-21swapper/020:29:400
9087992010,3cyclictest0-21swapper/023:19:280
9087992010,3cyclictest0-21swapper/019:39:410
908799200,1cyclictest0-21swapper/020:21:580
908899196,11cyclictest0-21swapper/123:14:351
9088991910,4cyclictest0-21swapper/121:04:341
9088991910,3cyclictest0-21swapper/100:34:351
9088991910,0cyclictest0-21swapper/121:11:331
9088991910,0cyclictest0-21swapper/121:11:331
9087991917,2cyclictest32253-21apache223:34:340
908799191,11cyclictest0-21swapper/021:39:360
9087991910,5cyclictest0-21swapper/020:39:340
9087991910,5cyclictest0-21swapper/000:04:560
9087991910,4cyclictest0-21swapper/020:44:350
9087991910,4cyclictest0-21swapper/019:24:360
9087991910,3cyclictest0-21swapper/021:14:260
9087991910,2cyclictest0-21swapper/020:19:230
908799190,0cyclictest0-21swapper/022:24:000
469621910,0sleep10-21swapper/123:41:121
2768521910,1sleep10-21swapper/100:14:421
1621121910,0sleep10-21swapper/119:25:111
908899189,6cyclictest0-21swapper/123:54:351
908899185,6cyclictest0-21swapper/119:44:391
908899185,10cyclictest0-21swapper/120:19:381
908899184,10cyclictest0-21swapper/120:54:381
908899183,12cyclictest0-21swapper/120:49:381
9088991813,1cyclictest100150irq/106-eth1-rx22:59:311
9088991810,5cyclictest0-21swapper/121:42:181
9088991810,3cyclictest0-21swapper/122:24:131
9088991810,0cyclictest0-21swapper/121:49:131
908899180,9cyclictest22396-21perf19:44:231
9087991816,1cyclictest5168-21ssh00:28:590
9087991811,3cyclictest0-21swapper/023:09:110
9087991810,5cyclictest0-21swapper/000:35:090
9087991810,1cyclictest0-21swapper/021:09:590
9087991810,1cyclictest0-21swapper/021:09:590
2256121810,1sleep00-21swapper/021:08:310
1857721810,0sleep10-21swapper/123:59:591
1475221810,0sleep00-21swapper/023:09:460
953921710,0sleep10-21swapper/119:09:381
908899175,6cyclictest0-21swapper/119:54:341
908899174,7cyclictest0-21swapper/121:15:341
9088991710,2cyclictest0-21swapper/121:54:261
908899170,9cyclictest0-21swapper/120:39:361
908799172,6cyclictest0-21swapper/019:19:330
9087991712,4cyclictest0-21swapper/020:54:340
9087991710,4cyclictest0-21swapper/020:52:290
1814021710,0sleep00-21swapper/019:30:230
908899165,6cyclictest0-21swapper/120:59:371
908799166,3cyclictest9382-21/usr/sbin/munin20:34:390
9087991610,3cyclictest0-21swapper/020:59:340
9087991610,2cyclictest0-21swapper/019:49:350
908799151,9cyclictest0-21swapper/019:59:350
908799145,2cyclictest22890-21hddtemp_smartct19:44:360
908799144,5cyclictest0-21swapper/019:14:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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