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2026-05-13 - 11:27
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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 May 13, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491206172,22phc2sys0-21swapper/319:07:093
139491206172,22phc2sys0-21swapper/319:07:093
26992202169,22sleep20-21swapper/219:05:532
26992202169,22sleep20-21swapper/219:05:532
27312200168,21sleep10-21swapper/119:06:151
27312200168,21sleep10-21swapper/119:06:151
28822198165,22sleep00-21swapper/019:08:080
28822198165,22sleep00-21swapper/019:08:080
860721450,5sleep0346899cyclictest19:20:140
1394918161,10phc2sys0-21swapper/319:10:013
347299599,16cyclictest19642-21taskset21:57:303
347299579,16cyclictest5914-21/usr/sbin/munin19:15:223
347299579,15cyclictest28453-21ls20:00:213
347299568,17cyclictest13909-21/usr/sbin/munin22:55:263
117042550,2sleep10-21swapper/119:25:211
347299499,17cyclictest28275-21/usr/sbin/munin21:10:243
296632490,2sleep10-21swapper/120:05:011
347299488,17cyclictest0-21swapper/300:16:393
347299480,14cyclictest8240-21apt-get21:35:113
347299478,10cyclictest18665-21/usr/sbin/munin23:05:143
3472994710,7cyclictest4897-21df_inode20:20:153
347199471,44cyclictest5527-21kworker/2:122:55:232
347199471,44cyclictest19211-21kworker/2:119:10:232
347299459,8cyclictest7174-21df20:25:143
3471994511,32cyclictest5527-21kworker/2:122:35:252
3469994540,3cyclictest7577-21sshd21:32:311
347299449,8cyclictest16062-21iostat19:35:183
139391440,0ptp4l401ktimersoftd/322:05:073
347299438,15cyclictest1300-21snmpd23:43:503
139391430,0ptp4l401ktimersoftd/300:35:413
3468994236,3cyclictest9-21ksoftirqd/019:50:000
139391420,0ptp4l401ktimersoftd/321:53:503
139391420,0ptp4l401ktimersoftd/321:17:163
139391420,0ptp4l401ktimersoftd/300:10:503
139391420,0ptp4l401ktimersoftd/300:01:393
347299416,10cyclictest23601-21egrep21:00:133
3468994135,3cyclictest18489-21cron20:49:590
139391400,0ptp4l401ktimersoftd/320:40:233
139391400,0ptp4l401ktimersoftd/319:45:183
57898390,7rtkit-daemon0-21swapper/123:06:421
57898380,4rtkit-daemon1-21systemd23:04:131
3471993718,17cyclictest0-21swapper/219:20:422
3469993731,4cyclictest25-21ksoftirqd/122:43:141
3469993730,5cyclictest25-21ksoftirqd/119:36:361
3469993730,4cyclictest25-21ksoftirqd/119:35:011
3468993732,3cyclictest9-21ksoftirqd/023:40:000
3472993631,3cyclictest41-21ksoftirqd/322:15:103
3472993630,4cyclictest41-21ksoftirqd/322:11:273
3472993629,4cyclictest41-21ksoftirqd/320:09:483
347299360,6cyclictest9345-21memory19:20:213
347199364,31cyclictest7983-21kworker/2:019:41:142
3471993631,3cyclictest33-21ksoftirqd/221:15:192
3471993630,4cyclictest33-21ksoftirqd/220:54:072
3471993630,4cyclictest33-21ksoftirqd/200:34:472
3471993630,3cyclictest33-21ksoftirqd/221:58:132
3471993629,4cyclictest33-21ksoftirqd/220:29:132
347199362,17cyclictest28039-21latency_hist21:10:012
3469993630,4cyclictest25-21ksoftirqd/123:19:121
3469993629,4cyclictest25-21ksoftirqd/121:26:281
3469993628,5cyclictest25-21ksoftirqd/100:30:581
3468993631,3cyclictest9-21ksoftirqd/022:30:000
3468993630,4cyclictest9-21ksoftirqd/000:03:400
3468993629,5cyclictest9-21ksoftirqd/000:14:550
57898350,2rtkit-daemon0-21swapper/120:17:411
57898350,2rtkit-daemon0-21swapper/100:17:531
57898350,2rtkit-daemon0-21swapper/023:25:590
3471993530,3cyclictest33-21ksoftirqd/223:55:032
3471993529,4cyclictest33-21ksoftirqd/223:01:242
3471993529,4cyclictest33-21ksoftirqd/222:49:202
3471993529,4cyclictest33-21ksoftirqd/222:01:022
3471993529,4cyclictest33-21ksoftirqd/220:56:192
3471993529,4cyclictest33-21ksoftirqd/220:24:462
3471993529,4cyclictest33-21ksoftirqd/200:02:542
3471993529,3cyclictest33-21ksoftirqd/222:20:122
3471993529,3cyclictest33-21ksoftirqd/221:44:122
3471993529,3cyclictest33-21ksoftirqd/221:44:112
3471993528,4cyclictest33-21ksoftirqd/219:45:102
3471993515,18cyclictest33-21ksoftirqd/200:05:112
3469993530,3cyclictest25-21ksoftirqd/121:15:111
3469993529,4cyclictest25-21ksoftirqd/122:59:351
3469993529,4cyclictest25-21ksoftirqd/122:36:321
3469993529,4cyclictest25-21ksoftirqd/121:56:321
3469993529,4cyclictest25-21ksoftirqd/121:52:431
3469993529,4cyclictest25-21ksoftirqd/121:21:261
3469993529,4cyclictest25-21ksoftirqd/119:40:541
3469993529,4cyclictest25-21ksoftirqd/100:06:131
3469993528,4cyclictest25-21ksoftirqd/100:37:551
3468993529,4cyclictest9-21ksoftirqd/022:18:050
264872350,3sleep1241ktimersoftd/119:55:251
3472993427,4cyclictest41-21ksoftirqd/323:22:233
347299340,7cyclictest3936-21iostat21:25:193
3471993428,4cyclictest33-21ksoftirqd/223:40:072
3471993428,4cyclictest33-21ksoftirqd/223:20:112
3471993428,4cyclictest33-21ksoftirqd/221:23:032
3471993428,4cyclictest33-21ksoftirqd/219:29:582
3471993427,5cyclictest33-21ksoftirqd/220:04:592
3469993428,4cyclictest25-21ksoftirqd/122:49:231
3469993428,4cyclictest25-21ksoftirqd/122:15:541
3469993428,4cyclictest25-21ksoftirqd/120:31:311
3468993430,3cyclictest9-21ksoftirqd/022:20:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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