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2026-07-21 - 09:02
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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 Tue Jul 21, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
160572225162,51sleep00-21swapper/019:09:040
139491210177,22phc2sys0-21swapper/319:06:323
157842204172,21sleep10-21swapper/119:05:361
158472202168,23sleep20-21swapper/219:06:252
161302164124,14sleep00-21swapper/019:10:010
1792921590,2sleep11642399cyclictest21:25:241
1330121410,3sleep31642599cyclictest23:30:263
139391740,1ptp4l391rcuc/323:20:263
1642399720,70cyclictest0-21swapper/121:06:331
84602640,4sleep2321ktimersoftd/222:15:162
1642499636,17cyclictest0-21swapper/200:15:242
1642599629,27cyclictest9368-21latency_hist21:10:013
16424995811,12cyclictest22194-21kernelversion23:50:202
16422995829,19cyclictest9-21ksoftirqd/021:40:130
254402560,3sleep20-21swapper/221:40:302
1642499560,17cyclictest29214-21irqrtprio19:35:202
1642499560,16cyclictest4724-21grep21:00:132
1642499550,19cyclictest20342-21sed23:45:272
1642499550,16cyclictest25992-21egrep19:30:122
168732540,1sleep00-21swapper/022:30:250
16424995413,9cyclictest8783-21awk21:05:292
1642499540,17cyclictest4426-21grep23:15:142
139391530,1ptp4l391rcuc/319:28:563
1642499520,18cyclictest4681-21mailstats19:50:262
26912490,2sleep10-21swapper/123:10:181
1642499490,13cyclictest3536-21sed22:05:142
96932480,2sleep30-21swapper/321:10:143
1642499480,17cyclictest0-21swapper/220:30:242
1642599476,24cyclictest449-21dbus-daemon23:02:133
1642499470,12cyclictest32002-21sed00:10:212
1642499460,15cyclictest9909-21perl21:10:152
16425994539,3cyclictest7727-21cron22:15:003
139391450,1ptp4l1294-21hddtemp_smartct22:00:163
1642599443,25cyclictest11472-21latency_hist23:30:003
1642499440,16cyclictest12332-21perl21:15:152
1642499439,12cyclictest19140-21timerandwakeup20:20:262
1642499430,8cyclictest17627-21meminfo21:25:202
16425994222,17cyclictest41-21ksoftirqd/300:05:113
1642499420,7cyclictest21153-21memory22:40:222
1642499420,15cyclictest12414-21iostat_ios23:30:192
139391420,0ptp4l401ktimersoftd/319:40:373
16424994112,17cyclictest28815-21sort22:55:292
1642499410,18cyclictest11113-21awk00:35:182
1642499410,17cyclictest24645-21ls23:55:192
139391410,0ptp4l401ktimersoftd/320:50:013
1642599390,25cyclictest16773-21df_abs19:10:133
1642499390,7cyclictest30823-21apt-get21:55:122
16423993933,3cyclictest18644-21cron23:45:001
139391390,1ptp4l391rcuc/323:50:223
16425993714,20cyclictest2239-21apt20:55:123
16424993710,18cyclictest29376-21latency00:05:192
1642499370,11cyclictest16414-21missed_timers22:30:202
16423993732,3cyclictest22104-21apt20:29:591
16423993731,4cyclictest25-21ksoftirqd/100:11:481
16422993732,3cyclictest9-21ksoftirqd/000:24:590
16425993631,3cyclictest41-21ksoftirqd/323:10:003
1642599360,4cyclictest4149-21latency_hist23:15:003
16424993622,5cyclictest33-21ksoftirqd/222:03:532
1642499360,11cyclictest1936-21processes19:45:242
16423993631,3cyclictest25-21ksoftirqd/123:35:001
16423993631,3cyclictest25-21ksoftirqd/119:49:591
16423993631,3cyclictest25-21ksoftirqd/119:35:121
16423993630,4cyclictest25-21ksoftirqd/122:44:551
16423993630,4cyclictest25-21ksoftirqd/122:31:361
16423993630,4cyclictest25-21ksoftirqd/120:52:151
16423993630,4cyclictest25-21ksoftirqd/119:31:351
16423993630,4cyclictest25-21ksoftirqd/100:07:591
16423993612,3cyclictest27950-21sed22:55:211
16422993631,3cyclictest9-21ksoftirqd/019:20:010
16425993530,3cyclictest41-21ksoftirqd/321:40:123
16425993530,3cyclictest41-21ksoftirqd/319:45:123
16425993529,4cyclictest41-21ksoftirqd/319:59:013
16425993529,4cyclictest41-21ksoftirqd/300:29:313
16425993527,5cyclictest41-21ksoftirqd/321:30:053
1642599350,5cyclictest10851-21cut20:05:173
1642599350,4cyclictest7953-21/usr/sbin/munin22:15:293
1642599350,3cyclictest13538-21sed20:10:183
1642499356,19cyclictest0-21swapper/223:25:132
16424993529,4cyclictest33-21ksoftirqd/223:04:492
16424993529,4cyclictest33-21ksoftirqd/200:33:242
16424993529,3cyclictest33-21ksoftirqd/223:35:592
1642499350,11cyclictest31981-21latency_hist20:49:592
16423993529,4cyclictest25-21ksoftirqd/123:08:551
16423993529,4cyclictest25-21ksoftirqd/121:52:571
16423993529,4cyclictest25-21ksoftirqd/120:30:081
16423993529,4cyclictest25-21ksoftirqd/119:26:301
16423993529,4cyclictest25-21ksoftirqd/100:28:371
16423993529,4cyclictest25-21ksoftirqd/100:19:191
16422993530,3cyclictest9-21ksoftirqd/020:30:000
139391350,0ptp4l401ktimersoftd/300:32:333
16425993429,3cyclictest41-21ksoftirqd/323:46:153
16425993429,3cyclictest41-21ksoftirqd/300:12:513
16425993428,4cyclictest41-21ksoftirqd/322:09:223
16425993428,4cyclictest41-21ksoftirqd/321:17:523
16425993428,4cyclictest41-21ksoftirqd/320:46:433
16425993411,20cyclictest15200-21/usr/sbin/munin20:15:153
1642599340,4cyclictest21318-21/usr/sbin/munin21:35:163
1642599340,3cyclictest26133-21grep21:45:133
1642599340,3cyclictest19987-21grep20:25:123
1642499347,17cyclictest0-21swapper/219:20:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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