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2026-07-10 - 11:09
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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 Jul 10, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1182727833,40sleep00-21swapper/019:04:030
1206627153,8sleep10-21swapper/119:06:331
25772660,0sleep00-21swapper/021:58:260
12430993636,0cyclictest0-21swapper/122:00:591
1243099340,33cyclictest32128-21df23:53:421
12429993331,1cyclictest7-21ksoftirqd/022:53:270
12430993131,0cyclictest0-21swapper/121:32:001
12429993125,2cyclictest81ktimersoftd/021:43:390
12429993110,7cyclictest0-21swapper/020:25:050
12429993110,20cyclictest0-21swapper/023:29:040
12429992910,14cyclictest0-21swapper/023:25:580
12429992820,6cyclictest26447-21apache221:21:110
12429992819,7cyclictest26447-21apache223:19:220
12430992619,5cyclictest26447-21apache223:09:341
12430992617,5cyclictest26447-21apache200:10:351
12430992610,4cyclictest0-21swapper/123:18:391
12429992625,0cyclictest81ktimersoftd/022:27:220
1242999262,22cyclictest0-21swapper/000:15:270
12429992611,9cyclictest100250irq/107-eth1-rx21:50:010
12430992525,0cyclictest0-21swapper/122:10:181
12430992522,3cyclictest0-21swapper/120:04:161
12430992510,6cyclictest0-21swapper/123:33:511
12430992510,10cyclictest0-21swapper/123:53:221
12429992510,9cyclictest0-21swapper/000:07:530
12429992510,5cyclictest0-21swapper/023:48:580
12430992410,5cyclictest0-21swapper/121:27:021
12430992410,4cyclictest0-21swapper/123:00:591
12430992410,11cyclictest5133-21ssh22:39:391
1242999247,2cyclictest14421-21kworker/u4:123:38:590
12429992419,5cyclictest26447-21apache200:28:340
12429992412,7cyclictest32378-21ssh00:33:430
12429992410,11cyclictest0-21swapper/020:16:210
222222310,0sleep10-21swapper/122:36:561
1243099232,21cyclictest0-21swapper/123:24:211
12430992310,8cyclictest0-21swapper/120:08:421
1242999236,16cyclictest0-21swapper/023:04:190
1242999234,11cyclictest0-21swapper/021:08:420
12429992310,6cyclictest0-21swapper/021:28:460
12429992310,6cyclictest0-21swapper/000:10:490
1242999230,3cyclictest0-21swapper/023:18:070
1243099224,9cyclictest0-21swapper/120:28:481
1243099224,17cyclictest0-21swapper/122:44:231
12430992220,1cyclictest26447-21apache200:30:461
12430992218,2cyclictest231ktimersoftd/119:13:441
12430992210,8cyclictest0-21swapper/121:16:081
12430992210,7cyclictest100250irq/107-eth1-rx00:33:591
12430992210,6cyclictest0-21swapper/119:38:381
12430992210,0cyclictest0-21swapper/121:34:041
1242999224,15cyclictest0-21swapper/022:28:410
12429992222,0cyclictest0-21swapper/019:26:230
12429992210,2cyclictest0-21swapper/021:39:310
12429992210,10cyclictest0-21swapper/000:23:440
1242999220,3cyclictest0-21swapper/022:47:140
1243099215,12cyclictest0-21swapper/120:18:391
1243099214,17cyclictest0-21swapper/119:54:001
1243099213,13cyclictest0-21swapper/121:03:401
12430992117,0cyclictest12427-21cyclictest20:02:541
12430992110,5cyclictest0-21swapper/121:22:111
12430992110,4cyclictest0-21swapper/120:43:381
12430992110,10cyclictest0-21swapper/121:58:011
1243099210,2cyclictest0-21swapper/100:16:051
1243099210,15cyclictest0-21swapper/119:28:471
1243099210,14cyclictest0-21swapper/100:23:521
1242999218,13cyclictest0-21swapper/019:44:550
12429992121,0cyclictest26008-21diskmemload21:16:590
12429992120,1cyclictest8550-21munin-node00:03:270
12429992115,3cyclictest0-21swapper/021:33:460
12429992111,4cyclictest3401-21cpuspeed_turbos22:38:400
12429992110,5cyclictest0-21swapper/023:47:170
12429992110,5cyclictest0-21swapper/021:58:450
12429992110,5cyclictest0-21swapper/020:47:570
2259522010,0sleep10-21swapper/123:41:411
1243099205,8cyclictest0-21swapper/121:38:391
12430992020,0cyclictest0-21swapper/123:46:331
1243099201,15cyclictest29105-21rm21:49:411
12430992011,2cyclictest0-21swapper/123:31:051
12430992010,6cyclictest0-21swapper/122:13:501
12430992010,4cyclictest0-21swapper/122:29:251
12430992010,4cyclictest0-21swapper/122:04:511
12430992010,4cyclictest0-21swapper/120:58:441
12430992010,4cyclictest0-21swapper/119:33:441
1243099200,12cyclictest0-21swapper/100:03:411
1242999209,5cyclictest636-21nscd23:35:030
1242999203,11cyclictest0-21swapper/022:33:430
12429992019,1cyclictest26447-21apache222:53:490
12429992015,5cyclictest26447-21apache219:58:440
12429992011,0cyclictest15201-21pmu-power19:13:450
12429992010,7cyclictest0-21swapper/019:18:380
12429992010,4cyclictest0-21swapper/022:18:430
2395521910,1sleep00-21swapper/019:38:300
1243099198,10cyclictest20748-21users22:18:501
12430991910,6cyclictest45-21kswapd000:18:391
12430991910,3cyclictest0-21swapper/122:27:271
12430991910,3cyclictest0-21swapper/120:33:381
12430991910,0cyclictest0-21swapper/122:48:471
1242999193,13cyclictest0-21swapper/021:23:410
12429991917,1cyclictest21612-21ssh23:00:250
12429991911,3cyclictest0-21swapper/020:28:410
12429991910,7cyclictest0-21swapper/023:56:330
12429991910,1cyclictest0-21swapper/023:09:550
12429991910,1cyclictest0-21swapper/022:13:480
2515921810,0sleep10-21swapper/121:45:161
1243099186,8cyclictest28719-21/usr/sbin/munin19:48:461
1243099186,6cyclictest13465-21seq19:08:481
12430991812,4cyclictest100150irq/106-eth1-rx22:53:511
12430991810,5cyclictest0-21swapper/121:08:371
12430991810,3cyclictest0-21swapper/120:53:461
12430991810,2cyclictest0-21swapper/120:38:391
1242999185,8cyclictest0-21swapper/020:33:430
1242999181,16cyclictest0-21swapper/019:58:110
12429991810,4cyclictest0-21swapper/020:53:390
1243099177,6cyclictest0-21swapper/123:58:401
1243099175,7cyclictest0-21swapper/120:13:471
12430991710,6cyclictest0-21swapper/123:07:161
12430991710,2cyclictest0-21swapper/119:43:391
1243099170,10cyclictest0-21swapper/123:13:501
1242999173,2cyclictest22845-21/usr/sbin/munin19:33:460
12429991714,2cyclictest0-21swapper/000:18:410
12429991710,4cyclictest0-21swapper/020:08:470
12429991710,4cyclictest0-21swapper/020:03:380
12429991710,3cyclictest0-21swapper/022:05:550
12429991710,3cyclictest0-21swapper/019:48:380
12429991710,2cyclictest0-21swapper/022:08:440
12429991710,2cyclictest0-21swapper/020:48:380
1243099168,6cyclictest0-21swapper/120:48:481
1243099164,7cyclictest0-21swapper/120:23:401
1242999163,6cyclictest24843-21/usr/sbin/munin21:03:450
1242999162,9cyclictest20135-21cpu19:28:390
12429991610,6cyclictest0-21swapper/020:22:510
12430991510,2cyclictest100150irq/106-eth1-rx19:18:381
1242999153,7cyclictest15469-21/usr/sbin/munin20:38:450
12429991511,4cyclictest0-21swapper/020:58:310
1243099142,5cyclictest0-21swapper/119:23:421
12429991414,0cyclictest12602-21expr19:08:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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