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2025-12-09 - 22:54
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Tue Dec 09, 2025 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
149352860,4sleep10-21swapper/110:40:241
2847191620,5ptp4l0-21swapper/212:30:312
2847191620,3ptp4l7269-21cat09:15:192
2847191610,4ptp4l0-21swapper/210:01:282
2847191610,3ptp4l0-21swapper/210:19:532
2847191610,3ptp4l0-21swapper/210:19:532
2847191610,26ptp4l41-21ksoftirqd/307:30:123
2847191600,3ptp4l0-21swapper/208:20:122
11690996030,4cyclictest25-21ksoftirqd/109:10:021
2847191580,3ptp4l0-21swapper/212:19:322
2847191570,4ptp4l0-21swapper/312:16:033
2847191570,4ptp4l0-21swapper/110:14:591
2847191570,3ptp4l0-21swapper/208:55:412
2847191560,4ptp4l10501-21ntp_states11:40:242
2847191560,4ptp4l0-21swapper/309:12:493
2847191560,4ptp4l0-21swapper/309:05:533
2847191560,3ptp4l0-21swapper/211:55:152
2847191560,3ptp4l0-21swapper/211:55:142
2847191560,3ptp4l0-21swapper/208:54:262
2847191550,3ptp4l0-21swapper/311:44:233
2847191550,3ptp4l0-21swapper/211:48:262
2847191550,3ptp4l0-21swapper/210:22:062
2847191540,5ptp4l0-21swapper/007:05:230
2847191540,4ptp4l0-21swapper/309:46:523
2847191540,4ptp4l0-21swapper/210:36:212
2847191540,4ptp4l0-21swapper/010:17:200
2847191540,4ptp4l0-21swapper/010:17:200
2847191540,3ptp4l0-21swapper/210:27:112
2847191540,13ptp4l9659-21diskstats07:05:161
2847191540,12ptp4l0-21swapper/309:16:263
2847191530,4ptp4l0-21swapper/209:42:062
2847191530,4ptp4l0-21swapper/011:03:460
2847191530,4ptp4l0-21swapper/007:38:540
2847191530,3ptp4l0-21swapper/207:39:072
2847191530,19ptp4l0-21swapper/109:21:011
11689995322,3cyclictest9-21ksoftirqd/011:55:000
2847191520,5ptp4l0-21swapper/211:05:252
2847191520,4ptp4l0-21swapper/309:43:183
2847191520,4ptp4l0-21swapper/211:01:162
2847191520,4ptp4l0-21swapper/209:02:142
2847191520,4ptp4l0-21swapper/207:31:252
2847191520,4ptp4l0-21swapper/007:11:240
2847191520,3ptp4l0-21swapper/311:34:213
2847191520,11ptp4l0-21swapper/310:55:163
2847191520,10ptp4l4479-21ssh08:00:303
2847191510,4ptp4l0-21swapper/211:17:082
2847191510,4ptp4l0-21swapper/210:41:462
2847191510,4ptp4l0-21swapper/012:20:300
2847191510,4ptp4l0-21swapper/011:20:470
2847191510,3ptp4l0-21swapper/207:21:232
2847191510,3ptp4l0-21swapper/009:11:380
11690995130,3cyclictest25-21ksoftirqd/110:20:001
11690995130,3cyclictest25-21ksoftirqd/110:20:001
2847191500,5ptp4l0-21swapper/011:48:410
2847191500,4ptp4l0-21swapper/212:13:452
2847191500,4ptp4l0-21swapper/211:30:522
2847191500,4ptp4l0-21swapper/210:50:182
2847191500,4ptp4l0-21swapper/210:09:032
2847191500,4ptp4l0-21swapper/009:01:110
2847191500,3ptp4l0-21swapper/307:51:013
2847191500,3ptp4l0-21swapper/212:08:592
2847191500,3ptp4l0-21swapper/211:14:092
2847191500,3ptp4l0-21swapper/110:00:221
11690995024,3cyclictest25-21ksoftirqd/107:53:501
2847191490,4ptp4l0-21swapper/208:41:162
2847191490,4ptp4l0-21swapper/011:33:380
2847191490,4ptp4l0-21swapper/008:42:260
2847191490,11ptp4l0-21swapper/207:42:392
2847191490,11ptp4l0-21swapper/207:42:392
2847191490,10ptp4l0-21swapper/309:37:133
11690994933,6cyclictest25-21ksoftirqd/108:30:001
11690994933,6cyclictest25-21ksoftirqd/108:30:001
11689994922,3cyclictest9-21ksoftirqd/010:05:310
11689994918,4cyclictest9-21ksoftirqd/008:10:240
2847191480,4ptp4l0-21swapper/308:28:463
2847191480,4ptp4l0-21swapper/308:28:463
2847191480,3ptp4l121rcu_preempt10:15:003
2847191480,3ptp4l0-21swapper/211:24:222
2847191480,3ptp4l0-21swapper/209:25:122
2847191480,3ptp4l0-21swapper/209:25:122
2847191470,8ptp4l11976-21ls08:15:272
2847191470,3ptp4l0-21swapper/207:15:092
2847191470,10ptp4l10665-21df_abs08:15:143
2847191460,9ptp4l0-21swapper/209:23:082
2847191460,4ptp4l0-21swapper/007:18:440
2847191460,12ptp4l0-21swapper/008:20:170
1169099467,4cyclictest25-21ksoftirqd/112:28:091
11690994615,3cyclictest25-21ksoftirqd/112:33:221
2847191450,8ptp4l0-21swapper/210:10:192
2847191450,6ptp4l1169099cyclictest08:30:251
2847191450,5ptp4l29384-21meminfo07:45:211
2847191450,4ptp4l0-21swapper/010:01:590
2847191450,4ptp4l0-21swapper/008:51:120
2847191450,11ptp4l0-21swapper/310:39:193
2847191450,10ptp4l1293-21snmpd08:08:173
11690994517,3cyclictest25-21ksoftirqd/111:10:271
11690994516,4cyclictest25-21ksoftirqd/111:20:301
11690994516,4cyclictest25-21ksoftirqd/108:05:021
11690994515,4cyclictest25-21ksoftirqd/111:30:231
11690994511,6cyclictest25-21ksoftirqd/112:14:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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