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2026-08-20 - 23:51
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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 Thu Aug 20, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
353721940,3sleep13536-21timerwakeupswit07:03:261
377527057,8sleep00-21swapper/007:04:170
432199290,3cyclictest24340-21ssh12:20:230
4322992827,1cyclictest0-21swapper/108:53:551
4322992819,5cyclictest4319-21cyclictest11:38:171
4322992810,13cyclictest0-21swapper/112:31:241
4321992827,1cyclictest0-21swapper/012:24:310
4322992710,3cyclictest0-21swapper/110:50:451
4322992525,0cyclictest0-21swapper/110:32:031
4321992525,0cyclictest0-21swapper/011:13:020
4321992523,1cyclictest0-21swapper/009:19:310
432199251,8cyclictest0-21swapper/010:03:210
4321992515,5cyclictest0-21swapper/012:08:180
432199250,0cyclictest0-21swapper/009:43:220
4322992411,2cyclictest0-21swapper/108:13:191
432199241,2cyclictest0-21swapper/009:39:580
4321992410,5cyclictest0-21swapper/011:16:540
4321992410,12cyclictest0-21swapper/007:38:200
4322992320,0cyclictest0-21swapper/109:03:251
4322992317,5cyclictest14200-21apache209:45:461
432199233,4cyclictest0-21swapper/009:17:140
4321992316,6cyclictest1199-21runrttasks09:06:130
4321992316,4cyclictest0-21swapper/011:05:120
4321992311,5cyclictest0-21swapper/011:33:250
432299223,12cyclictest0-21swapper/108:08:261
4322992220,1cyclictest636-21nscd10:41:091
4322992214,5cyclictest14221-21apache212:35:001
4322992210,7cyclictest0-21swapper/107:08:251
4322992210,6cyclictest0-21swapper/110:17:521
4322992210,6cyclictest0-21swapper/109:52:311
4322992210,6cyclictest0-21swapper/107:15:141
4322992210,4cyclictest0-21swapper/111:10:541
4322992210,0cyclictest0-21swapper/111:36:551
432299220,12cyclictest0-21swapper/109:58:171
4321992220,1cyclictest81ktimersoftd/009:49:160
4321992216,4cyclictest14200-21apache210:44:350
4321992216,1cyclictest0-21swapper/012:17:160
432199221,5cyclictest0-21swapper/012:05:490
4321992213,6cyclictest1732-21ssh09:28:260
4321992213,6cyclictest0-21swapper/008:08:240
432199221,1cyclictest0-21swapper/010:08:530
4321992211,8cyclictest18070-21ssh11:24:170
4321992210,9cyclictest0-21swapper/007:11:380
4321992210,7cyclictest0-21swapper/011:53:170
4321992210,7cyclictest0-21swapper/010:59:510
4321992210,5cyclictest0-21swapper/010:56:300
4321992210,0cyclictest0-21swapper/012:28:100
432199220,3cyclictest0-21swapper/011:44:160
4322992118,3cyclictest14221-21apache209:30:011
432299211,1cyclictest0-21swapper/112:14:021
4322992110,7cyclictest0-21swapper/110:34:301
4322992110,6cyclictest0-21swapper/111:48:201
4322992110,4cyclictest0-21swapper/109:38:491
432299210,1cyclictest0-21swapper/111:29:121
432199212,1cyclictest0-21swapper/009:59:070
4321992119,1cyclictest0-21swapper/010:36:320
4321992116,2cyclictest2062-21sed11:48:220
432199211,2cyclictest0-21swapper/011:38:520
4321992110,9cyclictest0-21swapper/009:57:440
4321992110,5cyclictest10685-21/usr/sbin/munin08:48:230
4321992110,11cyclictest0-21swapper/009:23:190
432199210,6cyclictest0-21swapper/011:19:290
432299206,6cyclictest0-21swapper/110:08:211
432299205,9cyclictest0-21swapper/107:33:191
432299202,11cyclictest4641-21ls10:18:271
4322992020,0cyclictest0-21swapper/107:56:171
4322992018,1cyclictest5445-21unixbench_multi09:33:281
4322992013,1cyclictest24-21ksoftirqd/110:03:131
432299201,17cyclictest3514-21/usr/sbin/munin11:03:261
4322992010,7cyclictest0-21swapper/108:18:151
4322992010,5cyclictest0-21swapper/109:13:121
4322992010,5cyclictest0-21swapper/107:18:161
4322992010,4cyclictest0-21swapper/112:09:041
4322992010,0cyclictest0-21swapper/109:01:521
4321992012,3cyclictest0-21swapper/007:23:190
4321992010,4cyclictest0-21swapper/007:23:060
4321992010,3cyclictest0-21swapper/010:52:030
432199200,1cyclictest0-21swapper/011:29:560
432199200,14cyclictest0-21swapper/010:16:190
432199200,12cyclictest0-21swapper/008:59:010
432299194,9cyclictest0-21swapper/108:33:191
432299194,6cyclictest9280-21/usr/sbin/munin11:58:241
432299194,4cyclictest0-21swapper/112:05:451
432299193,9cyclictest0-21swapper/108:43:171
432299193,7cyclictest0-21swapper/110:58:241
432299193,10cyclictest0-21swapper/112:23:171
432299193,10cyclictest0-21swapper/108:03:251
4322991910,6cyclictest0-21swapper/109:25:151
4322991910,6cyclictest0-21swapper/108:48:191
4322991910,4cyclictest0-21swapper/111:26:351
4322991910,4cyclictest0-21swapper/110:43:261
4322991910,4cyclictest0-21swapper/108:38:111
4322991910,4cyclictest0-21swapper/107:48:151
4322991910,4cyclictest0-21swapper/107:48:151
4322991910,3cyclictest0-21swapper/111:43:251
4322991910,3cyclictest0-21swapper/111:13:591
4322991910,1cyclictest6202-21sh11:53:281
4322991910,1cyclictest0-21swapper/110:23:451
432199196,9cyclictest0-21swapper/009:33:270
432199195,2cyclictest14221-21apache207:37:090
432199193,7cyclictest0-21swapper/007:43:160
432199193,10cyclictest0-21swapper/008:28:180
4321991914,3cyclictest8767-21/usr/sbin/munin08:43:170
432199191,1cyclictest5338-21ssh10:19:390
432199191,1cyclictest0-21swapper/010:29:440
4321991910,3cyclictest0-21swapper/009:08:180
4321991910,3cyclictest0-21swapper/008:53:260
4321991910,0cyclictest100250irq/107-eth1-rx12:36:350
2076721910,4sleep00-21swapper/010:43:010
1362221910,0sleep10-21swapper/107:30:491
432299187,9cyclictest0-21swapper/109:53:261
432299185,5cyclictest0-21swapper/112:18:231
4322991818,0cyclictest0-21swapper/110:53:061
4322991810,2cyclictest0-21swapper/111:18:191
4322991810,1cyclictest0-21swapper/107:38:201
432199183,11cyclictest0-21swapper/007:58:170
4321991810,4cyclictest0-21swapper/008:33:250
4321991810,3cyclictest0-21swapper/008:18:250
4321991810,1cyclictest0-21swapper/008:13:170
432299177,6cyclictest14221-21apache207:59:031
432299175,5cyclictest0-21swapper/109:08:221
4322991710,3cyclictest0-21swapper/108:28:191
4321991712,2cyclictest0-21swapper/010:23:170
4321991710,5cyclictest0-21swapper/007:48:140
4321991710,5cyclictest0-21swapper/007:48:140
4321991710,4cyclictest0-21swapper/008:24:350
4321991710,3cyclictest0-21swapper/008:38:200
2909821710,0sleep10-21swapper/109:22:591
4322991616,0cyclictest0-21swapper/107:23:481
4322991612,2cyclictest14230-21kworker/1:108:23:201
4322991610,2cyclictest0-21swapper/107:43:171
432199164,8cyclictest8293-21apache_processe11:58:160
432199162,7cyclictest0-21swapper/008:03:240
4321991613,2cyclictest0-21swapper/007:53:190
4321991510,2cyclictest0-21swapper/007:28:240
4321991410,3cyclictest0-21swapper/007:14:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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