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2025-11-29 - 22:47
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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 Sat Nov 29, 2025 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32402213181,21sleep20-21swapper/207:05:592
137191212178,22phc2sys0-21swapper/307:07:273
33482202169,22sleep10-21swapper/107:07:211
34642199166,22sleep00-21swapper/007:08:540
59298770,13rtkit-daemon0-21swapper/307:30:253
385499599,11cyclictest1989-21grep10:25:251
385499598,11cyclictest2192-21uniq11:35:171
385499596,20cyclictest8444-21hwlatdetect10:40:171
27432590,2sleep20-21swapper/208:15:142
145612580,6sleep2385599cyclictest09:45:202
3854995710,10cyclictest30722-21/usr/sbin/munin09:10:271
385499569,13cyclictest7834-21cat09:30:261
385499568,11cyclictest19250-21cat12:10:181
3854995610,12cyclictest18417-21/usr/sbin/munin08:45:241
385499557,11cyclictest18229-21taskset12:08:111
385499557,11cyclictest12659-21mailstats11:55:261
385499547,11cyclictest6614-21df_abs07:15:161
385499547,11cyclictest6614-21df_abs07:15:151
136991540,0ptp4l401ktimersoftd/307:10:113
136991530,1ptp4l401ktimersoftd/311:19:143
385499526,9cyclictest12954-21sed09:40:271
385499526,11cyclictest30372-21gpgv12:35:001
385499517,10cyclictest412-21cron10:24:591
131202510,3sleep113122-21fschecks_time10:50:181
3855995036,12cyclictest33-21ksoftirqd/209:19:592
385499507,12cyclictest9287-21/usr/sbin/munin11:50:161
385499506,10cyclictest17851-21sshd07:39:401
59298490,2rtkit-daemon0-21swapper/307:43:063
385499496,11cyclictest18835-21grep11:00:261
385499495,8cyclictest756-21smartctl08:10:191
3854994916,31cyclictest27867-21kworker/1:212:24:081
3855994841,4cyclictest8397-21turbostat07:20:002
3855994841,4cyclictest8397-21turbostat07:20:002
385499488,11cyclictest7127-21seq08:23:571
385499476,11cyclictest30773-21dpkg12:35:121
385499474,11cyclictest30752-21mailstats11:25:281
132691470,1getstats0-21swapper/308:30:153
3855994631,9cyclictest33-21ksoftirqd/209:20:252
3855994628,16cyclictest33-21ksoftirqd/211:30:002
385499466,12cyclictest15031-21mailstats09:45:251
3855994528,15cyclictest33-21ksoftirqd/209:44:592
385499456,12cyclictest29224-21awk08:00:271
385399452,6cyclictest9-21ksoftirqd/009:49:590
59298440,2rtkit-daemon0-21swapper/311:26:163
3855994418,7cyclictest33-21ksoftirqd/212:15:212
3855994416,4cyclictest33-21ksoftirqd/211:35:292
3855994413,9cyclictest33-21ksoftirqd/208:40:162
3855994413,4cyclictest33-21ksoftirqd/207:50:202
385499447,11cyclictest223-21systemd-journal11:40:451
385499447,11cyclictest12127-21/usr/sbin/munin07:25:221
385499447,11cyclictest10596-21chrt07:22:531
385399445,4cyclictest9-21ksoftirqd/007:50:260
385599435,2cyclictest121rcu_preempt12:05:202
385599430,3cyclictest121rcu_preempt09:00:252
385499437,9cyclictest20604-21chrt09:55:571
385499435,11cyclictest9355-21fschecks_time09:35:181
385499434,9cyclictest0-21swapper/109:07:541
385399436,5cyclictest9-21ksoftirqd/012:05:160
385399434,5cyclictest9-21ksoftirqd/007:27:420
385399432,6cyclictest9-21ksoftirqd/010:58:460
385599428,4cyclictest33-21ksoftirqd/211:00:172
385599428,3cyclictest33-21ksoftirqd/207:20:272
3855994237,3cyclictest33-21ksoftirqd/211:00:002
3855994237,3cyclictest33-21ksoftirqd/209:40:012
3855994237,3cyclictest33-21ksoftirqd/208:25:002
3855994222,3cyclictest33-21ksoftirqd/212:10:212
3855994211,4cyclictest33-21ksoftirqd/208:45:282
385499428,10cyclictest26479-21taskset11:16:571
385499427,11cyclictest32375-21iostat11:30:191
385499427,11cyclictest32081-21seq08:08:341
385499420,39cyclictest31600-21kworker/1:110:30:271
385399426,4cyclictest9-21ksoftirqd/008:00:300
385399424,5cyclictest9-21ksoftirqd/009:10:440
385399422,5cyclictest9-21ksoftirqd/008:50:460
385399422,5cyclictest9-21ksoftirqd/008:36:220
385399422,5cyclictest9-21ksoftirqd/007:21:120
59298410,9rtkit-daemon0-21swapper/311:49:263
59298410,8rtkit-daemon0-21swapper/211:40:562
385599416,2cyclictest121rcu_preempt09:25:262
3855994134,4cyclictest1297-21runrttasks09:10:402
3855994128,11cyclictest311rcuc/211:25:002
3855994110,4cyclictest33-21ksoftirqd/210:10:202
385499415,11cyclictest6228-21latency_hist07:15:001
3854994110,10cyclictest20929-21uname11:05:221
385399412,6cyclictest9-21ksoftirqd/010:40:250
385399412,5cyclictest9-21ksoftirqd/011:45:490
385399412,5cyclictest9-21ksoftirqd/011:34:000
385399411,5cyclictest9-21ksoftirqd/008:05:160
385399410,5cyclictest9-21ksoftirqd/009:05:270
136991410,0ptp4l401ktimersoftd/310:25:253
385599406,2cyclictest33-21ksoftirqd/209:30:172
385599406,2cyclictest33-21ksoftirqd/208:25:182
385599406,2cyclictest33-21ksoftirqd/208:05:182
385599405,3cyclictest33-21ksoftirqd/211:15:262
385599404,4cyclictest33-21ksoftirqd/210:30:132
3855994034,3cyclictest1297-21runrttasks10:37:292
385499406,11cyclictest8004-21cat11:45:281
385499403,36cyclictest27867-21kworker/1:211:21:001
385399402,6cyclictest9-21ksoftirqd/009:55:250
385399401,5cyclictest9-21ksoftirqd/011:15:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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