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2026-06-03 - 03:48
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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 Jun 03, 2026 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591204169,23phc2sys0-21swapper/319:07:143
31312203169,22sleep20-21swapper/219:06:092
31242199164,23sleep10-21swapper/119:06:031
11312199165,22sleep00-21swapper/019:05:020
2173121240,2sleep20-21swapper/200:15:262
134991750,1getstats22471-1kworker/3:1H20:45:463
388199636,11cyclictest25430-21runrttasks00:25:142
117292630,2sleep20-21swapper/223:55:242
81452620,2sleep28149-21fschecks_count22:45:172
138491610,1ptp4l5436-21latency_hist21:35:013
388199576,10cyclictest28698-21cat20:10:172
388199576,10cyclictest28698-21cat20:10:172
388199574,11cyclictest27917-21cstates22:20:142
388199565,20cyclictest7689-21latency_hist23:50:012
388199565,20cyclictest10931-21cut21:45:152
388199565,17cyclictest14775-21taskset21:51:202
388199555,17cyclictest25385-21egrep23:20:132
388199554,10cyclictest1319-21snmpd20:04:152
388199544,9cyclictest16369-21irqrtprio23:00:182
99612530,2sleep10-21swapper/122:50:001
388199535,11cyclictest3535-21sed20:25:132
388199534,15cyclictest20138-21runrttasks23:09:542
3879995247,3cyclictest32167-21sshd22:27:320
3879995247,3cyclictest32167-21sshd22:27:320
235372520,1sleep00-21swapper/021:05:170
388199515,11cyclictest9090-21cat20:35:202
138491510,0ptp4l401ktimersoftd/321:05:183
99932490,2sleep30-21swapper/319:29:593
388199494,7cyclictest11722-21grep19:30:212
388199494,17cyclictest30144-21apt-get00:35:122
388199494,11cyclictest26216-21cat20:05:212
388199493,15cyclictest27693-21apt-get00:30:132
1385914934,8phc2sys0-21swapper/319:10:003
1385914934,8phc2sys0-21swapper/319:10:003
388199484,8cyclictest3886-21apt-config19:10:012
388199484,8cyclictest3886-21apt-config19:10:012
388199484,8cyclictest14618-21cat22:55:262
388199484,8cyclictest14618-21cat22:55:262
388199484,14cyclictest17352-21ls19:45:252
75352470,2sleep00-21swapper/020:32:150
388199474,7cyclictest18065-21apt-get20:55:092
388199473,7cyclictest13233-21apt-get19:40:072
388199473,7cyclictest13233-21apt-get19:40:072
388199463,8cyclictest17847-21apt-get00:10:122
388199454,7cyclictest20985-21irqrtprio22:05:192
388199453,7cyclictest5555-21apt-get20:30:122
388199445,8cyclictest23143-21df00:20:152
388199445,7cyclictest3348-21diskstats23:40:152
388199444,8cyclictest4158-21ls21:30:512
388199435,8cyclictest13619-21diskstats20:45:162
388199435,7cyclictest26618-21meminfo21:10:202
388199435,14cyclictest30911-21diskstats21:20:162
388199434,8cyclictest9612-21ls21:40:252
388199434,7cyclictest30879-21iostat22:25:162
388199434,7cyclictest30879-21iostat22:25:162
388199434,7cyclictest15655-21diskstats00:05:192
388199434,16cyclictest2736-21grep22:35:122
388199434,15cyclictest7789-21/usr/sbin/munin23:50:182
388199434,15cyclictest465-21egrep21:25:132
388199434,15cyclictest465-21egrep21:25:132
388199433,14cyclictest20399-21apt-get23:10:122
388199432,8cyclictest12732-21apt-get00:00:122
388199424,15cyclictest25178-21egrep22:15:122
138491420,0ptp4l401ktimersoftd/322:30:513
138491420,0ptp4l401ktimersoftd/319:55:363
3880994128,11cyclictest25-21ksoftirqd/122:04:271
138491410,0ptp4l401ktimersoftd/321:29:563
138491410,0ptp4l401ktimersoftd/321:29:563
138491410,0ptp4l401ktimersoftd/321:15:173
3879994035,3cyclictest12468-21sshd20:42:150
3882993931,5cyclictest41-21ksoftirqd/320:30:133
388199393,7cyclictest31297-21irqstats23:30:192
3880993915,21cyclictest19504-21sendmail_mailst20:55:211
3882993825,11cyclictest41-21ksoftirqd/320:04:593
138491380,0ptp4l401ktimersoftd/321:35:233
3881993731,4cyclictest33-21ksoftirqd/220:18:582
3880993732,3cyclictest25-21ksoftirqd/120:44:001
3880993731,4cyclictest25-21ksoftirqd/122:25:591
3880993731,4cyclictest25-21ksoftirqd/122:25:581
3880993730,5cyclictest25-21ksoftirqd/121:24:351
3879993731,4cyclictest9-21ksoftirqd/023:46:520
3879993731,3cyclictest6186-21dump-pmu-power19:15:010
3879993731,3cyclictest6186-21dump-pmu-power19:15:010
138491370,0ptp4l401ktimersoftd/300:25:143
3882993630,4cyclictest41-21ksoftirqd/323:11:523
3882993630,4cyclictest41-21ksoftirqd/300:39:063
3882993630,3cyclictest41-21ksoftirqd/300:00:013
388199366,16cyclictest9035-21sshd19:21:582
3881993629,4cyclictest33-21ksoftirqd/220:25:012
3880993631,3cyclictest25-21ksoftirqd/120:33:521
3880993630,4cyclictest25-21ksoftirqd/123:39:421
3880993630,4cyclictest25-21ksoftirqd/122:42:101
3880993630,4cyclictest25-21ksoftirqd/122:22:161
3880993630,4cyclictest25-21ksoftirqd/121:57:571
3880993630,4cyclictest25-21ksoftirqd/119:39:011
3880993630,3cyclictest27703-21wc00:30:141
3882993530,3cyclictest41-21ksoftirqd/322:45:113
3882993530,3cyclictest41-21ksoftirqd/320:05:143
3882993530,3cyclictest41-21ksoftirqd/300:24:303
3882993529,4cyclictest41-21ksoftirqd/319:22:213
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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