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2026-04-03 - 11:33
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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 Apr 03, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2863727158,8sleep10-21swapper/119:07:471
2853126933,31sleep00-21swapper/019:06:390
28960993910,26cyclictest15353-21kworker/1:023:34:371
28959993710,26cyclictest0-21swapper/022:01:190
28960993510,24cyclictest0-21swapper/123:44:111
28960993410,23cyclictest0-21swapper/120:54:251
28959993414,19cyclictest0-21swapper/022:59:430
28960993314,18cyclictest19826-21ssh22:05:171
2896099330,5cyclictest0-21swapper/122:53:091
28960993210,6cyclictest0-21swapper/100:18:471
28959993210,3cyclictest0-21swapper/022:46:470
28960993131,0cyclictest0-21swapper/123:57:121
2896099303,6cyclictest0-21swapper/122:29:251
2896099301,7cyclictest0-21swapper/121:41:481
28959993010,17cyclictest0-21swapper/021:10:470
2896099292,4cyclictest0-21swapper/121:19:111
28960992910,6cyclictest100250irq/107-eth1-rx23:19:301
28960992910,18cyclictest0-21swapper/119:24:261
28959992910,0cyclictest0-21swapper/023:21:140
2896099280,8cyclictest0-21swapper/121:19:341
28959992810,0cyclictest0-21swapper/021:53:180
2896099272,6cyclictest0-21swapper/122:44:351
28960992710,10cyclictest0-21swapper/123:49:311
28960992619,6cyclictest32073-21kworker/1:220:12:251
2896099261,6cyclictest0-21swapper/120:34:301
28960992616,9cyclictest28957-21cyclictest21:34:141
28960992616,10cyclictest231ktimersoftd/100:39:021
2896099261,3cyclictest13539-21ssh21:13:251
28960992612,5cyclictest0-21swapper/123:14:291
2896099260,3cyclictest0-21swapper/100:32:391
28959992611,10cyclictest0-21swapper/023:32:090
28959992610,9cyclictest0-21swapper/000:34:300
28959992610,8cyclictest0-21swapper/021:47:290
2896099252,6cyclictest14070-21/usr/sbin/munin19:54:281
28960992510,14cyclictest0-21swapper/119:14:151
28960992510,0cyclictest0-21swapper/122:57:251
2896099250,2cyclictest0-21swapper/121:54:251
2895999255,18cyclictest17683-21rm21:19:090
28959992523,1cyclictest0-21swapper/000:00:340
28959992510,0cyclictest0-21swapper/023:53:530
2896099243,5cyclictest17927-21/usr/sbin/munin20:04:291
28960992410,7cyclictest0-21swapper/100:08:011
28959992419,3cyclictest18016-21apache222:28:200
28959992410,6cyclictest0-21swapper/023:24:360
2896099234,4cyclictest0-21swapper/100:24:361
28960992322,1cyclictest0-21swapper/119:19:491
28960992310,7cyclictest0-21swapper/119:41:401
28960992310,5cyclictest0-21swapper/122:09:591
28960992310,4cyclictest0-21swapper/100:19:251
28959992323,0cyclictest0-21swapper/023:06:130
28959992310,7cyclictest10315-21kworker/u4:221:24:290
28959992310,2cyclictest0-21swapper/022:35:020
28959992310,1cyclictest0-21swapper/000:16:370
2895999230,2cyclictest0-21swapper/021:57:560
2895999230,22cyclictest22757-21awk22:09:330
2896099223,5cyclictest0-21swapper/119:15:341
28960992218,3cyclictest18016-21apache223:30:021
2896099221,12cyclictest31921-21taskset23:08:041
28960992210,8cyclictest0-21swapper/121:25:291
28960992210,6cyclictest0-21swapper/119:34:451
2896099220,2cyclictest8975-21ssh22:34:591
28959992210,5cyclictest0-21swapper/000:29:290
2896099217,7cyclictest0-21swapper/123:24:291
28960992113,5cyclictest32073-21kworker/1:220:42:171
28960992110,6cyclictest0-21swapper/122:15:111
28959992121,0cyclictest0-21swapper/020:15:560
2895999211,6cyclictest0-21swapper/020:39:340
28959992112,6cyclictest0-21swapper/020:44:260
2895999211,19cyclictest11454-21kworker/0:122:58:320
28959992111,6cyclictest0-21swapper/019:14:260
28959992111,5cyclictest0-21swapper/022:49:260
28959992110,6cyclictest649-21nscd21:19:590
28959992110,6cyclictest0-21swapper/000:09:150
28959992110,3cyclictest0-21swapper/022:29:300
28959992110,3cyclictest0-21swapper/020:10:270
28959992110,0cyclictest0-21swapper/022:20:290
2895999210,13cyclictest0-21swapper/023:48:500
2896099204,8cyclictest0-21swapper/123:09:281
2896099202,9cyclictest0-21swapper/123:03:091
2896099202,17cyclictest0-21swapper/120:59:271
2896099201,4cyclictest0-21swapper/121:49:301
2896099201,18cyclictest0-21swapper/121:59:351
28960992010,3cyclictest0-21swapper/120:44:251
2895999204,6cyclictest0-21swapper/020:54:250
2895999203,0cyclictest0-21swapper/000:28:480
28959992010,9cyclictest100150irq/106-eth1-rx23:42:120
28959992010,6cyclictest0-21swapper/022:14:520
28959992010,6cyclictest0-21swapper/019:54:280
28959992010,5cyclictest0-21swapper/022:04:310
28959992010,5cyclictest0-21swapper/019:09:260
28959992010,1cyclictest0-21swapper/021:04:370
28959992010,0cyclictest0-21swapper/021:43:500
2895999200,2cyclictest0-21swapper/021:35:360
2896099192,11cyclictest0-21swapper/122:19:321
28960991916,2cyclictest11411-21sendmail_mailqu00:09:341
28960991912,5cyclictest18037-21apache221:49:031
28960991910,8cyclictest0-21swapper/120:49:251
28960991910,6cyclictest0-21swapper/120:24:321
28960991910,5cyclictest0-21swapper/121:05:541
28960991910,5cyclictest0-21swapper/120:14:261
28960991910,4cyclictest0-21swapper/100:00:391
28960991910,2cyclictest0-21swapper/120:30:111
28960991910,2cyclictest0-21swapper/120:30:111
2895999197,8cyclictest0-21swapper/020:34:260
2895999197,5cyclictest10032-21apache_accesses19:44:260
28959991917,1cyclictest0-21swapper/023:10:180
28959991914,2cyclictest5119-21awk19:29:320
2895999191,0cyclictest0-21swapper/000:13:350
1298221910,2sleep10-21swapper/122:40:481
28960991810,5cyclictest0-21swapper/119:44:301
2895999186,9cyclictest0-21swapper/020:29:250
2895999186,9cyclictest0-21swapper/020:29:250
2895999184,8cyclictest0-21swapper/019:19:330
28959991812,3cyclictest0-21swapper/000:21:360
28959991810,4cyclictest0-21swapper/020:26:360
28959991810,0cyclictest0-21swapper/022:41:050
28959991810,0cyclictest0-21swapper/020:19:340
3272021710,0sleep10-21swapper/122:24:171
2896099174,10cyclictest0-21swapper/121:34:271
2896099171,13cyclictest0-21swapper/119:59:251
28960991710,3cyclictest0-21swapper/119:31:131
28960991710,2cyclictest0-21swapper/123:46:551
28959991710,3cyclictest0-21swapper/023:58:200
28959991710,2cyclictest0-21swapper/021:29:280
28959991710,0cyclictest0-21swapper/023:35:130
2896099165,7cyclictest0-21swapper/120:19:271
28960991610,5cyclictest32073-21kworker/1:219:54:091
2895999165,10cyclictest0-21swapper/023:14:270
2895999163,4cyclictest8227-21munin-run21:04:150
2895999162,5cyclictest0-21swapper/019:39:320
28959991610,4cyclictest0-21swapper/020:04:270
28959991610,4cyclictest0-21swapper/019:34:250
28959991610,3cyclictest0-21swapper/019:53:190
2895999160,6cyclictest18029-21apache220:49:250
2895999152,5cyclictest0-21swapper/019:59:450
28959991510,5cyclictest0-21swapper/019:24:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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