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2025-12-12 - 00:52
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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 rackdslot3.osadl.org (updated Thu Dec 11, 2025 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137191206172,22phc2sys0-21swapper/307:05:033
41042198165,22sleep00-21swapper/007:09:410
40562198164,22sleep20-21swapper/207:09:032
18872197163,23sleep10-21swapper/107:05:041
3149021790,6sleep0443099cyclictest08:05:170
606021640,4sleep0443099cyclictest09:25:230
1369911000,0ptp4l391rcuc/312:05:283
244222600,2sleep30-21swapper/307:50:193
244222600,2sleep30-21swapper/307:50:193
443399595,16cyclictest223-21systemd-journal12:38:513
136991540,1ptp4l391rcuc/307:25:253
443399524,16cyclictest9441-21/usr/sbin/munin09:35:273
443399513,16cyclictest4464-21apt-get07:10:123
443399513,15cyclictest16544-21/usr/sbin/munin07:35:173
136991440,0ptp4l401ktimersoftd/308:42:483
4431994333,7cyclictest25-21ksoftirqd/111:40:011
136991430,1ptp4l0-21swapper/309:52:453
136991430,0ptp4l401ktimersoftd/312:21:193
136991430,0ptp4l401ktimersoftd/309:56:263
136991430,0ptp4l401ktimersoftd/309:17:503
136991430,0ptp4l401ktimersoftd/308:55:553
59298420,9rtkit-daemon0-21swapper/109:05:171
443399425,7cyclictest1555-21df10:25:153
136991420,0ptp4l401ktimersoftd/311:20:023
136991410,0ptp4l401ktimersoftd/310:42:433
136991400,0ptp4l401ktimersoftd/308:51:383
136991400,0ptp4l401ktimersoftd/308:51:383
4431993934,3cyclictest25-21ksoftirqd/110:40:011
4433993833,3cyclictest41-21ksoftirqd/308:10:003
4432993832,4cyclictest33-21ksoftirqd/207:11:072
443399374,14cyclictest1359-21ssh11:30:273
443399373,14cyclictest14031-21meminfo08:35:223
4432993731,4cyclictest33-21ksoftirqd/212:19:492
4431993732,3cyclictest25-21ksoftirqd/109:00:001
59298360,2rtkit-daemon0-21swapper/010:00:150
443399363,14cyclictest1285-21snmpd10:14:143
4433993630,4cyclictest41-21ksoftirqd/307:24:123
4432993630,4cyclictest33-21ksoftirqd/210:48:262
4432993630,4cyclictest33-21ksoftirqd/207:39:312
4431993630,4cyclictest25-21ksoftirqd/107:45:401
4431993630,3cyclictest25-21ksoftirqd/111:00:001
4431993629,5cyclictest25-21ksoftirqd/109:51:371
443199361,33cyclictest13971-21cron09:44:591
4430993629,5cyclictest9-21ksoftirqd/009:05:000
304562360,22sleep233-21ksoftirqd/209:10:182
136991360,0ptp4l401ktimersoftd/308:25:133
4433993529,4cyclictest41-21ksoftirqd/309:45:533
4433993529,4cyclictest41-21ksoftirqd/308:34:233
4432993530,3cyclictest33-21ksoftirqd/207:42:232
4432993529,4cyclictest33-21ksoftirqd/211:43:062
4432993529,4cyclictest33-21ksoftirqd/210:36:542
4432993528,5cyclictest33-21ksoftirqd/210:52:202
4431993531,3cyclictest25-21ksoftirqd/111:50:001
4431993531,3cyclictest25-21ksoftirqd/109:20:001
4431993531,3cyclictest25-21ksoftirqd/107:30:001
4431993529,4cyclictest25-21ksoftirqd/111:18:421
59298340,3rtkit-daemon11990-21/usr/sbin/munin07:25:150
4433993428,4cyclictest41-21ksoftirqd/311:16:203
4433993428,4cyclictest41-21ksoftirqd/309:00:433
4433993428,4cyclictest41-21ksoftirqd/307:45:343
4433993427,4cyclictest41-21ksoftirqd/307:44:543
4432993429,3cyclictest33-21ksoftirqd/207:19:542
4432993428,4cyclictest33-21ksoftirqd/212:32:002
4432993428,4cyclictest33-21ksoftirqd/211:57:382
4432993428,4cyclictest33-21ksoftirqd/211:11:332
4432993428,4cyclictest33-21ksoftirqd/210:34:062
4432993428,4cyclictest33-21ksoftirqd/210:34:052
4432993428,4cyclictest33-21ksoftirqd/209:58:082
4432993428,4cyclictest33-21ksoftirqd/209:47:412
4432993428,4cyclictest33-21ksoftirqd/209:19:332
4432993428,4cyclictest33-21ksoftirqd/208:58:422
4432993427,5cyclictest33-21ksoftirqd/207:20:582
4431993430,3cyclictest25-21ksoftirqd/109:50:001
4431993429,3cyclictest25-21ksoftirqd/111:45:001
4431993429,3cyclictest25-21ksoftirqd/108:10:001
4431993428,4cyclictest25-21ksoftirqd/110:32:051
4431993428,4cyclictest25-21ksoftirqd/110:32:041
4431993428,4cyclictest25-21ksoftirqd/108:21:061
4431993428,4cyclictest25-21ksoftirqd/108:14:491
4431993427,5cyclictest25-21ksoftirqd/107:31:321
4431993427,4cyclictest25-21ksoftirqd/110:40:351
4431993427,4cyclictest21616-21turbostat12:15:001
4430993428,4cyclictest9-21ksoftirqd/007:14:220
59298330,2rtkit-daemon0-21swapper/112:03:121
59298330,2rtkit-daemon0-21swapper/010:15:160
4433993328,3cyclictest41-21ksoftirqd/308:15:123
4433993328,3cyclictest41-21ksoftirqd/308:04:163
4433993327,4cyclictest41-21ksoftirqd/312:17:213
4433993327,4cyclictest41-21ksoftirqd/311:49:053
4433993327,4cyclictest41-21ksoftirqd/310:22:473
4433993327,4cyclictest41-21ksoftirqd/309:40:473
4433993327,4cyclictest41-21ksoftirqd/309:06:303
4432993328,3cyclictest33-21ksoftirqd/210:59:042
4432993328,3cyclictest33-21ksoftirqd/208:54:572
4432993328,3cyclictest33-21ksoftirqd/208:54:562
4432993328,3cyclictest33-21ksoftirqd/207:32:322
4432993327,4cyclictest33-21ksoftirqd/212:22:412
4432993327,4cyclictest33-21ksoftirqd/210:11:072
4432993327,4cyclictest33-21ksoftirqd/208:30:382
4431993328,3cyclictest25-21ksoftirqd/112:10:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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