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2025-08-27 - 14:39
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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 rackdslot4.osadl.org (updated Wed Aug 27, 2025 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134791211167,33phc2sys0-21swapper/319:08:003
113342203169,23sleep10-21swapper/119:06:471
115452202167,23sleep20-21swapper/219:09:262
93532200166,23sleep00-21swapper/019:05:020
2087121590,6sleep11188599cyclictest21:35:281
134991810,1ptp4l391rcuc/300:10:273
11884996811,21cyclictest22412-21expr21:40:170
130691610,4getstats8128-21meminfo00:25:223
130691610,4getstats8128-21meminfo00:25:223
1188499590,3cyclictest6026-21processes21:05:250
273962570,2sleep20-21swapper/219:40:182
159972560,3sleep31188799cyclictest20:20:283
1188499550,3cyclictest23952-21taskset20:37:120
1188799542,11cyclictest0-21swapper/322:49:593
1188799527,7cyclictest12316-21expr00:35:143
1188799527,6cyclictest5346-21sed23:15:223
1188799527,6cyclictest5041-21expr21:05:153
1188799525,7cyclictest20765-21mailstats20:30:253
88462510,2sleep00-21swapper/000:25:290
88462510,2sleep00-21swapper/000:25:280
1188799517,7cyclictest5140-21perl00:20:163
1188799512,9cyclictest10337-21cut00:30:203
1188799506,11cyclictest13926-21awk22:25:293
11887995010,5cyclictest41-21ksoftirqd/322:52:233
1188499500,3cyclictest13801-21runrttasks23:31:590
1188799490,15cyclictest25243-21/usr/sbin/munin19:35:213
1188799490,15cyclictest25243-21/usr/sbin/munin19:35:213
1188799490,10cyclictest7626-21irqrtprio20:05:213
1188799490,10cyclictest27461-21cat20:45:183
1188499490,4cyclictest28754-21runrttasks22:56:100
1188499490,4cyclictest28754-21runrttasks22:56:090
1188799487,7cyclictest306-21irqrtprio22:00:213
1188799487,5cyclictest27755-21ls19:40:213
1188799486,6cyclictest15734-21missed_timers21:25:233
1188799476,8cyclictest442-21expr23:05:223
1188799476,7cyclictest23506-21timerandwakeup23:50:273
1188799470,16cyclictest26834-21/usr/sbin/munin00:00:183
1188799470,15cyclictest11660-21/usr/sbin/munin20:15:263
302832460,1sleep00-21swapper/021:55:210
1188799462,8cyclictest10166-21sed20:10:223
1188799460,15cyclictest7136-21/usr/sbin/munin21:10:183
1188499467,26cyclictest25941-21sed23:55:270
11886994540,3cyclictest33-21ksoftirqd/221:40:002
1188799448,6cyclictest30623-21systemctl19:45:263
1188799440,16cyclictest19990-21cat19:25:173
11884994418,24cyclictest15390-21ls23:35:200
1188799431,8cyclictest11883-21cyclictest23:40:313
11886994336,4cyclictest11826-21cron22:25:012
11886994331,10cyclictest33-21ksoftirqd/223:20:332
134991420,0ptp4l401ktimersoftd/323:27:173
134991420,0ptp4l401ktimersoftd/323:03:493
11886994237,3cyclictest33-21ksoftirqd/223:40:002
36998410,4rtkit-daemon15401-21meminfo23:35:211
134991410,0ptp4l401ktimersoftd/322:15:503
11886994136,3cyclictest33-21ksoftirqd/223:00:012
11886994136,3cyclictest33-21ksoftirqd/223:00:002
11886994136,3cyclictest33-21ksoftirqd/222:19:592
11886994135,3cyclictest33-21ksoftirqd/219:30:002
1188699410,2cyclictest121rcu_preempt00:10:182
11885994123,16cyclictest25-21ksoftirqd/100:11:251
36998400,5rtkit-daemon15876-21/usr/sbin/munin19:15:261
1188799407,14cyclictest29298-21/usr/sbin/munin00:05:283
11886994028,9cyclictest33-21ksoftirqd/222:45:142
134991390,0ptp4l401ktimersoftd/319:25:013
11887993930,6cyclictest41-21ksoftirqd/322:35:133
1188799390,4cyclictest41-21ksoftirqd/322:05:193
11884993933,4cyclictest29309-21cron21:54:590
11886993834,3cyclictest33-21ksoftirqd/220:29:592
11886993833,3cyclictest33-21ksoftirqd/220:45:012
11886993833,3cyclictest33-21ksoftirqd/220:35:002
11885993831,4cyclictest25-21ksoftirqd/121:19:111
11885993831,4cyclictest25-21ksoftirqd/121:19:111
1188599381,36cyclictest22650-21kworker/1:119:46:181
1188799370,11cyclictest26345-21cat21:45:253
11886993733,3cyclictest33-21ksoftirqd/220:20:012
11886993733,2cyclictest33-21ksoftirqd/221:45:002
11886993733,2cyclictest33-21ksoftirqd/221:20:002
11886993733,2cyclictest33-21ksoftirqd/221:20:002
11886993732,3cyclictest33-21ksoftirqd/223:00:142
11886993732,3cyclictest33-21ksoftirqd/221:05:002
11886993731,5cyclictest33-21ksoftirqd/223:25:172
11886993731,3cyclictest33-21ksoftirqd/200:30:002
11885993731,4cyclictest25-21ksoftirqd/121:45:351
11885993731,4cyclictest25-21ksoftirqd/120:16:391
11884993731,4cyclictest9-21ksoftirqd/021:15:010
1188499370,3cyclictest1391-21/usr/sbin/munin00:10:290
36998360,2rtkit-daemon0-21swapper/121:01:191
11887993631,3cyclictest41-21ksoftirqd/321:24:553
11886993633,2cyclictest33-21ksoftirqd/219:40:012
11886993633,2cyclictest33-21ksoftirqd/219:40:002
11886993631,3cyclictest33-21ksoftirqd/222:30:012
11886993631,3cyclictest33-21ksoftirqd/220:40:012
11886993631,3cyclictest33-21ksoftirqd/219:55:212
11886993631,3cyclictest33-21ksoftirqd/200:05:202
11886993631,2cyclictest33-21ksoftirqd/221:50:182
11886993630,4cyclictest33-21ksoftirqd/219:32:522
11886993630,3cyclictest33-21ksoftirqd/221:05:212
11886993629,4cyclictest33-21ksoftirqd/221:31:242
11886993622,12cyclictest33-21ksoftirqd/222:52:512
11885993630,4cyclictest25-21ksoftirqd/123:01:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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