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2026-03-14 - 17:21
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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 Sat Mar 14, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
202412710,2sleep1231ktimersoftd/111:41:181
2335327056,9sleep10-21swapper/107:05:051
2334626855,8sleep00-21swapper/007:05:000
23946993222,6cyclictest636-21nscd12:10:450
23947993131,0cyclictest0-21swapper/112:33:371
23947993110,20cyclictest0-21swapper/110:53:411
23946993131,0cyclictest0-21swapper/009:35:380
23946993010,18cyclictest0-21swapper/011:51:160
2394699290,26cyclictest0-21swapper/011:59:400
23947992810,8cyclictest0-21swapper/111:04:421
2394699284,22cyclictest0-21swapper/010:31:220
2394799270,26cyclictest26056-21/usr/sbin/munin11:49:391
23946992711,9cyclictest15994-21munin-node12:28:530
23947992626,0cyclictest0-21swapper/111:48:281
23946992626,0cyclictest0-21swapper/011:23:050
23946992615,7cyclictest1520-21/usr/sbin/munin07:34:400
23946992610,3cyclictest0-21swapper/011:02:240
23946992610,0cyclictest0-21swapper/011:57:150
23947992525,0cyclictest0-21swapper/109:47:271
23946992510,6cyclictest0-21swapper/011:04:450
23946992510,4cyclictest0-21swapper/010:44:300
2394799244,19cyclictest0-21swapper/112:10:221
23947992410,5cyclictest0-21swapper/110:23:071
2394799240,0cyclictest0-21swapper/109:09:341
2394799236,12cyclictest0-21swapper/110:04:411
2394799235,9cyclictest32281-21ssh11:14:241
2394799232,1cyclictest10769-21cstates10:44:361
23947992318,3cyclictest1429-21apache210:25:561
23947992312,7cyclictest1456-21apache212:08:331
2394699238,12cyclictest1456-21apache212:31:380
23946992320,2cyclictest0-21swapper/010:24:470
23946992317,5cyclictest1429-21apache210:55:200
23946992310,2cyclictest0-21swapper/012:06:190
23946992310,2cyclictest0-21swapper/009:29:340
23947992219,3cyclictest1456-21apache211:16:571
23947992218,3cyclictest231ktimersoftd/109:51:461
23947992210,6cyclictest0-21swapper/109:34:401
23947992210,5cyclictest0-21swapper/109:54:351
23947992210,12cyclictest0-21swapper/108:01:541
23946992210,3cyclictest0-21swapper/010:22:360
2394699220,4cyclictest0-21swapper/009:14:010
23947992120,1cyclictest25061-21apache207:20:361
23947992114,6cyclictest9139-21kworker/u4:009:30:301
23947992111,5cyclictest588-21in:imuxsock07:17:441
2394699211,9cyclictest0-21swapper/011:32:540
23946992116,4cyclictest23944-21cyclictest10:44:110
23946992113,5cyclictest100150irq/106-eth1-rx09:59:370
23946992110,5cyclictest0-21swapper/009:19:390
23946992110,4cyclictest0-21swapper/007:42:540
2394799203,9cyclictest0-21swapper/108:34:371
2394799203,9cyclictest0-21swapper/108:34:371
2394799203,8cyclictest0-21swapper/112:24:361
2394799202,10cyclictest0-21swapper/107:34:391
23947992019,1cyclictest0-21swapper/110:31:501
23947992010,6cyclictest0-21swapper/108:54:411
23947992010,5cyclictest0-21swapper/110:14:371
23947992010,4cyclictest0-21swapper/109:39:551
23947992010,2cyclictest0-21swapper/108:14:451
2394699203,12cyclictest0-21swapper/009:14:400
2394699202,10cyclictest0-21swapper/011:11:590
23946992019,1cyclictest25088-21apache207:24:440
23946992018,1cyclictest7-21ksoftirqd/007:14:350
23946992010,6cyclictest0-21swapper/010:10:520
23946992010,5cyclictest0-21swapper/009:58:120
23946992010,5cyclictest0-21swapper/009:43:040
23946992010,5cyclictest0-21swapper/007:44:380
23946992010,4cyclictest0-21swapper/010:34:390
23946992010,4cyclictest0-21swapper/010:04:430
23946992010,3cyclictest0-21swapper/012:19:350
23946992010,3cyclictest0-21swapper/008:49:330
23946992010,2cyclictest0-21swapper/011:49:200
23946992010,1cyclictest0-21swapper/010:49:350
23946992010,0cyclictest0-21swapper/011:27:190
1936522010,1sleep00-21swapper/009:27:150
2394799193,11cyclictest11462-21ssh09:59:451
2394799192,8cyclictest0-21swapper/111:34:341
2394799192,10cyclictest0-21swapper/107:49:351
23947991915,2cyclictest23944-21cyclictest09:15:251
23947991914,3cyclictest231ktimersoftd/107:11:511
23947991912,5cyclictest100150irq/106-eth1-rx10:57:111
23947991910,6cyclictest0-21swapper/108:59:341
23947991910,5cyclictest0-21swapper/109:04:361
23947991910,2cyclictest0-21swapper/107:39:361
23947991910,0cyclictest0-21swapper/112:02:171
2394799190,10cyclictest0-21swapper/110:09:351
2394699194,10cyclictest0-21swapper/011:39:440
23946991919,0cyclictest81ktimersoftd/010:15:560
23946991916,2cyclictest7-21ksoftirqd/012:34:370
23946991914,4cyclictest7-21ksoftirqd/007:54:370
23946991913,3cyclictest11165-21cpu07:59:340
23946991910,4cyclictest0-21swapper/008:04:360
23946991910,3cyclictest0-21swapper/008:34:400
23946991910,3cyclictest0-21swapper/008:34:400
2394699190,12cyclictest0-21swapper/008:29:450
1124021910,0sleep10-21swapper/112:14:331
2394799184,7cyclictest0-21swapper/108:04:411
2394799183,5cyclictest5899-21seq10:37:111
2394799182,8cyclictest0-21swapper/107:44:351
2394799182,12cyclictest0-21swapper/111:24:361
23947991817,1cyclictest319-21rpcbind07:55:561
23947991816,1cyclictest18012-21ls09:24:431
23947991815,2cyclictest29285-21rm11:54:351
23947991810,4cyclictest0-21swapper/107:29:351
23947991810,3cyclictest0-21swapper/108:24:381
2394699184,10cyclictest0-21swapper/008:44:390
2394699183,5cyclictest18887-21cut08:19:360
23946991817,0cyclictest81ktimersoftd/011:14:570
23946991813,2cyclictest0-21swapper/007:09:350
23946991810,5cyclictest0-21swapper/008:54:360
23946991810,4cyclictest0-21swapper/009:44:420
23946991810,4cyclictest0-21swapper/007:29:390
23946991810,3cyclictest0-21swapper/009:51:050
572021710,0sleep10-21swapper/111:21:201
2394799174,6cyclictest21560-21/usr/sbin/munin10:59:431
2394799172,7cyclictest0-21swapper/108:49:341
2394799171,9cyclictest0-21swapper/110:39:361
23947991715,1cyclictest1456-21apache209:21:021
23947991713,4cyclictest0-21swapper/111:31:191
23947991712,3cyclictest1429-21apache208:19:411
23947991710,5cyclictest0-21swapper/112:34:411
23947991710,3cyclictest0-21swapper/112:19:281
23947991710,2cyclictest0-21swapper/108:09:351
23947991710,1cyclictest0-21swapper/108:44:331
2394699174,7cyclictest0-21swapper/008:24:360
2394699172,8cyclictest0-21swapper/008:59:340
23946991715,1cyclictest7-21ksoftirqd/007:54:240
23946991715,1cyclictest4465-21ntpq09:04:410
23946991715,1cyclictest278922sleep008:41:130
23946991711,0cyclictest91rcu_preempt08:14:360
23946991710,1cyclictest0-21swapper/007:19:420
23946991710,0cyclictest0-21swapper/012:14:340
23947991610,4cyclictest0-21swapper/108:29:441
2394799160,16cyclictest0-21swapper/107:24:311
2394699164,9cyclictest0-21swapper/008:09:350
23946991610,1cyclictest0-21swapper/011:34:400
2394799154,8cyclictest0-21swapper/108:39:351
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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