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2025-12-16 - 16:35
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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 Tue Dec 16, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2280926957,8sleep10-21swapper/107:09:171
2278926235,22sleep00-21swapper/007:09:050
23056993030,0cyclictest0-21swapper/008:05:030
23056992910,19cyclictest0-21swapper/008:29:250
23057992828,0cyclictest0-21swapper/107:38:051
2305799280,22cyclictest0-21swapper/112:15:181
23056992828,0cyclictest0-21swapper/010:39:340
2305699280,26cyclictest0-21swapper/010:15:130
23057992710,6cyclictest0-21swapper/107:34:101
23056992721,6cyclictest0-21swapper/011:00:370
2305699270,15cyclictest0-21swapper/010:30:120
23056992525,0cyclictest0-21swapper/010:28:230
2305699250,24cyclictest0-21swapper/010:46:430
23057992420,3cyclictest437-21apache208:45:201
23057992420,2cyclictest1199-21runrttasks10:24:191
23056992419,4cyclictest1199-21runrttasks09:20:220
23056992410,9cyclictest0-21swapper/009:40:170
23056992410,5cyclictest0-21swapper/011:32:130
23056992410,5cyclictest0-21swapper/011:20:140
23056992410,4cyclictest0-21swapper/009:25:120
2305799237,13cyclictest0-21swapper/107:55:121
2305799234,18cyclictest0-21swapper/108:50:121
2305799230,20cyclictest23013-21open_inodes11:20:181
2305699233,5cyclictest17687-21munin-run08:19:590
23056992319,3cyclictest802-21apache208:10:370
23056992310,3cyclictest0-21swapper/009:05:130
2305799225,14cyclictest0-21swapper/112:05:111
2305799224,9cyclictest0-21swapper/110:55:201
2305799224,14cyclictest0-21swapper/109:15:131
23057992215,6cyclictest593-21lldpd10:15:291
23057992210,5cyclictest0-21swapper/110:26:541
2305799220,7cyclictest0-21swapper/107:15:201
23056992218,2cyclictest802-21apache210:43:020
23056992217,2cyclictest7-21ksoftirqd/012:15:140
23056992210,7cyclictest0-21swapper/011:25:180
23056992210,4cyclictest0-21swapper/009:15:120
2305799215,9cyclictest0-21swapper/111:45:131
2305799214,11cyclictest0-21swapper/110:30:111
23057992119,1cyclictest24064-21expr10:00:121
23057992110,5cyclictest0-21swapper/107:25:161
23057992110,4cyclictest0-21swapper/112:20:181
23057992110,3cyclictest0-21swapper/109:30:131
23057992110,1cyclictest0-21swapper/110:10:171
2305699215,10cyclictest0-21swapper/007:50:160
2305699213,8cyclictest0-21swapper/007:55:120
23056992110,2cyclictest0-21swapper/012:37:510
23056992110,10cyclictest0-21swapper/009:37:410
2305699210,20cyclictest28198-21ntp_states08:45:170
1427422110,0sleep00-21swapper/012:21:200
23057992019,1cyclictest437-21apache209:21:541
23057992011,5cyclictest0-21swapper/110:50:201
23057992010,6cyclictest0-21swapper/112:35:101
23057992010,4cyclictest0-21swapper/111:15:161
23056992020,0cyclictest0-21swapper/008:00:200
23056992019,1cyclictest0-21swapper/008:55:180
23056992018,1cyclictest0-21swapper/008:35:160
2305699201,2cyclictest13208-21awk09:30:180
23056992011,3cyclictest0-21swapper/012:05:180
23056992010,9cyclictest0-21swapper/009:10:150
23056992010,4cyclictest0-21swapper/008:50:120
2305799195,8cyclictest0-21swapper/111:30:151
2305799195,8cyclictest0-21swapper/109:25:151
2305799194,10cyclictest0-21swapper/112:25:121
2305799193,10cyclictest0-21swapper/111:10:121
23057991919,0cyclictest0-21swapper/109:13:061
23057991913,2cyclictest0-21swapper/108:38:241
23057991910,7cyclictest0-21swapper/108:00:191
23057991910,5cyclictest0-21swapper/107:45:191
23057991910,4cyclictest0-21swapper/109:57:201
2305699196,9cyclictest0-21swapper/010:00:110
2305699195,10cyclictest0-21swapper/011:10:120
2305699193,15cyclictest0-21swapper/009:55:200
2305699193,10cyclictest0-21swapper/011:15:120
23056991917,2cyclictest23054-21cyclictest08:23:380
23056991910,3cyclictest0-21swapper/010:55:110
23056991910,1cyclictest0-21swapper/012:14:550
2305699190,2cyclictest23064-21taskset07:10:040
237021810,0sleep10-21swapper/109:02:391
2305799189,5cyclictest437-21apache208:05:141
2305799184,8cyclictest0-21swapper/109:50:191
2305799182,12cyclictest0-21swapper/109:35:201
23057991817,1cyclictest1199-21runrttasks08:32:241
23057991812,3cyclictest437-21apache208:42:551
23057991811,4cyclictest437-21apache209:40:191
23057991810,4cyclictest0-21swapper/108:25:151
23057991810,3cyclictest0-21swapper/112:10:101
23057991810,2cyclictest0-21swapper/110:35:131
2305799180,6cyclictest26934-21apache_accesses07:20:111
2305699184,8cyclictest0-21swapper/007:15:140
2305699183,8cyclictest0-21swapper/010:20:170
2305699182,6cyclictest0-21swapper/009:00:140
23056991813,4cyclictest100250irq/107-eth1-rx07:20:130
2305699181,10cyclictest0-21swapper/007:35:140
23056991810,7cyclictest0-21swapper/011:40:340
23056991810,4cyclictest0-21swapper/009:50:190
23056991810,4cyclictest0-21swapper/008:40:190
23056991810,3cyclictest0-21swapper/010:50:210
23056991810,3cyclictest0-21swapper/008:30:200
23056991810,2cyclictest0-21swapper/012:25:120
23056991810,0cyclictest0-21swapper/011:35:200
1956921810,0sleep10-21swapper/109:47:081
2745221710,0sleep10-21swapper/110:09:191
2305799178,2cyclictest8789-21/usr/sbin/munin10:45:131
2305799174,7cyclictest0-21swapper/112:00:121
23057991716,1cyclictest0-21swapper/111:25:241
23057991711,5cyclictest411-21apache210:40:131
23057991710,5cyclictest0-21swapper/111:40:111
23057991710,4cyclictest0-21swapper/109:05:121
23057991710,3cyclictest0-21swapper/111:35:171
23057991710,3cyclictest0-21swapper/108:55:161
2305699174,5cyclictest0-21swapper/009:45:130
2305699173,7cyclictest0-21swapper/011:47:340
23056991712,3cyclictest411-21apache212:31:050
23056991712,2cyclictest31377-21latency07:30:160
2305699170,6cyclictest28617-21/usr/sbin/munin10:10:170
2305799164,6cyclictest0-21swapper/108:20:121
2305799164,4cyclictest14881-21grep08:10:171
2305799162,9cyclictest0-21swapper/107:12:081
23057991616,0cyclictest0-21swapper/112:31:341
23057991610,4cyclictest0-21swapper/111:05:121
23057991610,3cyclictest0-21swapper/111:54:011
2305699168,8cyclictest0-21swapper/012:02:110
2305699166,3cyclictest25782-21apache_processe10:05:110
2305699161,8cyclictest0-21swapper/007:45:110
23056991612,4cyclictest0-21swapper/011:05:290
23056991610,3cyclictest0-21swapper/007:25:180
23056991610,1cyclictest0-21swapper/011:50:220
2305799154,4cyclictest0-21swapper/111:55:131
23057991510,3cyclictest0-21swapper/107:40:011
23057991510,2cyclictest0-21swapper/107:50:061
23057991510,0cyclictest0-21swapper/111:00:411
2305699153,6cyclictest3913-21ls11:55:160
23056991510,2cyclictest0-21swapper/007:40:120
2305799144,3cyclictest16683-21/usr/sbin/munin08:15:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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