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2026-04-01 - 18:03
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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 Wed Apr 01, 2026 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
290172236171,22sleep10-21swapper/107:06:431
290062216151,22sleep00-21swapper/007:06:340
139491206172,23phc2sys0-21swapper/307:09:523
291572202168,23sleep20-21swapper/207:08:262
139391800,1ptp4l401ktimersoftd/310:00:223
118532700,3sleep311857-21timerandwakeup08:45:263
140452640,5sleep314047-21grep08:50:233
253802600,2sleep30-21swapper/310:20:293
39082570,2sleep00-21swapper/009:35:290
2957599541,17cyclictest0-21swapper/207:15:202
2957599521,17cyclictest0-21swapper/208:55:142
2957599510,17cyclictest0-21swapper/211:25:252
2957599510,17cyclictest0-21swapper/207:30:262
45592470,2sleep20-21swapper/208:30:242
2957599473,15cyclictest1016-21timerandwakeup11:45:272
2957599470,16cyclictest0-21swapper/211:30:272
2957599461,7cyclictest13134-21grep12:10:262
2957599460,16cyclictest0-21swapper/210:45:262
2957599455,22cyclictest22926-21smartctl09:10:162
2957599453,13cyclictest18965-21/usr/sbin/munin12:25:212
2957599441,16cyclictest12184-21unixbench_singl11:00:272
2957599440,14cyclictest0-21swapper/212:30:152
2957599433,15cyclictest5639-21cat09:40:212
139391430,0ptp4l401ktimersoftd/312:31:083
2957599423,15cyclictest21681-21expr10:15:122
2957599421,7cyclictest18964-21grep09:00:262
2957599420,15cyclictest0-21swapper/211:50:232
139391420,0ptp4l401ktimersoftd/309:55:273
2957599412,7cyclictest30563-21ls09:25:182
2957599410,6cyclictest10489-21ls07:35:232
29573994135,3cyclictest9-21ksoftirqd/010:40:000
29573994135,3cyclictest9-21ksoftirqd/010:40:000
139391410,34ptp4l0-21swapper/307:10:003
139391410,0ptp4l401ktimersoftd/312:10:053
139391410,0ptp4l401ktimersoftd/309:10:043
139391410,0ptp4l401ktimersoftd/307:26:523
2957599403,12cyclictest32567-21ps09:30:192
29575994012,26cyclictest13429-21kworker/2:110:10:232
2957599401,15cyclictest17272-21ps12:20:202
29575994010,28cyclictest13429-21kworker/2:110:20:222
29573994034,3cyclictest9-21ksoftirqd/007:55:000
2957599394,13cyclictest14857-21sshd11:08:312
2957599391,7cyclictest5610-21ls11:55:232
2957599391,35cyclictest17348-21cron11:15:002
139391390,0ptp4l401ktimersoftd/309:15:283
29575993831,4cyclictest33-21ksoftirqd/211:23:592
2957599382,7cyclictest24738-21meminfo12:35:192
2957599380,16cyclictest0-21swapper/208:13:402
29573993834,2cyclictest9-21ksoftirqd/010:00:000
29573993832,3cyclictest9-21ksoftirqd/010:15:000
29573993832,3cyclictest9-21ksoftirqd/009:55:000
29573993832,3cyclictest9-21ksoftirqd/009:40:190
29573993832,3cyclictest9-21ksoftirqd/009:35:010
29576993731,3cyclictest41-21ksoftirqd/310:50:003
2957599372,15cyclictest8138-21ps12:00:222
2957599372,14cyclictest30034-21grep10:30:232
2957599371,9cyclictest1300-21snmpd12:17:442
29574993731,4cyclictest25-21ksoftirqd/108:46:281
29574993731,3cyclictest25-21ksoftirqd/110:56:581
29574993730,4cyclictest25-21ksoftirqd/111:23:051
29574993730,4cyclictest25-21ksoftirqd/108:50:101
29573993733,2cyclictest9-21ksoftirqd/012:05:010
29573993732,3cyclictest9-21ksoftirqd/010:19:590
29573993732,2cyclictest9-21ksoftirqd/007:45:180
139391370,0ptp4l401ktimersoftd/309:00:233
29576993629,4cyclictest41-21ksoftirqd/311:47:463
29576993623,10cyclictest41-21ksoftirqd/310:58:193
2957599361,8cyclictest6825-21ps08:35:232
2957599361,15cyclictest0-21swapper/209:35:192
2957599360,7cyclictest28724-21ls11:35:272
2957599360,15cyclictest0-21swapper/208:50:222
29574993630,4cyclictest25-21ksoftirqd/111:18:281
29574993630,4cyclictest25-21ksoftirqd/107:49:471
29574993629,5cyclictest25-21ksoftirqd/107:50:121
29573993631,3cyclictest9-21ksoftirqd/012:20:000
29573993631,3cyclictest9-21ksoftirqd/012:05:190
29573993631,3cyclictest9-21ksoftirqd/011:10:180
29573993631,3cyclictest9-21ksoftirqd/010:45:010
29573993631,3cyclictest9-21ksoftirqd/008:40:000
29573993631,2cyclictest9-21ksoftirqd/009:25:000
29573993630,3cyclictest9-21ksoftirqd/010:50:010
29573993629,4cyclictest9-21ksoftirqd/009:03:150
139391360,13ptp4l401ktimersoftd/310:07:183
29576993528,4cyclictest41-21ksoftirqd/311:38:443
29576993528,4cyclictest41-21ksoftirqd/311:25:353
29575993529,4cyclictest33-21ksoftirqd/210:02:152
29575993529,4cyclictest33-21ksoftirqd/207:30:002
29574993530,3cyclictest25-21ksoftirqd/108:13:061
29574993529,4cyclictest25-21ksoftirqd/112:24:351
29574993529,4cyclictest25-21ksoftirqd/111:39:501
29574993529,4cyclictest25-21ksoftirqd/109:55:031
29574993529,4cyclictest25-21ksoftirqd/109:14:521
29574993529,4cyclictest25-21ksoftirqd/107:44:311
29574993528,4cyclictest25-21ksoftirqd/108:04:201
29573993531,3cyclictest9-21ksoftirqd/007:35:200
29573993531,3cyclictest9-21ksoftirqd/007:25:190
29573993531,2cyclictest9-21ksoftirqd/011:00:010
29573993530,3cyclictest9-21ksoftirqd/008:30:000
29573993530,3cyclictest9-21ksoftirqd/007:10:200
29573993530,2cyclictest9-21ksoftirqd/009:00:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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