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2026-04-17 - 22:29
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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 Fri Apr 17, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591203170,22phc2sys0-21swapper/307:08:073
78312200167,21sleep20-21swapper/207:07:452
77422200167,22sleep10-21swapper/107:06:361
76892200167,21sleep00-21swapper/007:05:540
830799623,17cyclictest19572-21/usr/sbin/munin08:35:223
830799592,16cyclictest32609-21systemctl11:10:243
830799576,7cyclictest26254-21grep09:55:153
830799564,9cyclictest31020-21date10:05:013
830799563,10cyclictest854-21grep09:05:133
830799544,9cyclictest13255-21/usr/sbin/munin07:20:173
830799543,9cyclictest20730-21sed09:45:003
830799533,10cyclictest15903-21expr07:25:143
830799531,18cyclictest3662-21sed11:20:003
830799531,10cyclictest15923-21ls10:40:013
830799527,6cyclictest26752-21sed12:05:173
830799525,6cyclictest18824-21if_enp1s007:30:153
830799523,10cyclictest32526-21phc2sys10:05:213
830799501,12cyclictest4388-21tune2fs10:15:153
830799501,10cyclictest18616-21cat10:45:013
830799492,9cyclictest11465-21cstates10:30:133
830799481,10cyclictest27132-21cut11:00:183
830799481,10cyclictest24611-21mailstats07:40:253
830799470,15cyclictest9044-21df_abs09:20:143
830799466,6cyclictest10624-21latency_hist07:15:013
830799466,6cyclictest10624-21latency_hist07:15:003
830799460,11cyclictest30538-21sed09:00:003
830799460,10cyclictest5775-21cat12:30:003
8304994641,3cyclictest3229-21sh12:25:000
830799451,10cyclictest1262-21diskstats08:00:153
830799451,10cyclictest1262-21diskstats08:00:153
830799441,10cyclictest25749-21apt-get08:50:083
830799433,6cyclictest41-21ksoftirqd/310:52:393
830799432,6cyclictest0-21swapper/309:30:123
830799431,10cyclictest6877-21hddtemp_smartct10:20:153
830799431,10cyclictest4214-21diskstats11:20:153
830799421,18cyclictest10920-21awk11:35:013
8306994231,9cyclictest33-21ksoftirqd/211:30:142
830799410,8cyclictest29185-21sed12:10:173
830799410,15cyclictest16951-21irqrtprio09:35:183
8306994136,3cyclictest33-21ksoftirqd/207:44:592
8306994135,3cyclictest33-21ksoftirqd/208:15:002
138491410,0ptp4l401ktimersoftd/311:48:293
138491410,0ptp4l401ktimersoftd/310:10:563
134991410,2getstats0-21swapper/308:34:003
830799401,8cyclictest9754-21sensors_temp08:15:243
830799401,8cyclictest6287-21df12:30:153
830799401,7cyclictest21091-21df_inode07:35:133
830799401,6cyclictest4437-21meminfo08:05:193
830599400,38cyclictest0-21swapper/111:30:331
830799391,7cyclictest31334-21diskstats12:15:143
830799391,6cyclictest6597-21diskstats09:15:153
830799391,6cyclictest28746-21df_inode07:50:143
830799391,6cyclictest19909-21meminfo10:45:183
8306993934,3cyclictest33-21ksoftirqd/212:10:012
8306993934,3cyclictest33-21ksoftirqd/210:00:002
8306993934,3cyclictest33-21ksoftirqd/208:25:002
8306993934,3cyclictest33-21ksoftirqd/208:05:012
8306993934,3cyclictest33-21ksoftirqd/208:05:002
8306993834,3cyclictest33-21ksoftirqd/210:10:012
8306993834,3cyclictest33-21ksoftirqd/208:45:002
8306993833,3cyclictest33-21ksoftirqd/211:40:002
8306993833,3cyclictest33-21ksoftirqd/209:15:182
8306993833,3cyclictest33-21ksoftirqd/207:30:172
8306993833,3cyclictest33-21ksoftirqd/207:25:002
8306993827,9cyclictest33-21ksoftirqd/209:10:182
8306993827,9cyclictest33-21ksoftirqd/208:35:132
8304993831,4cyclictest9-21ksoftirqd/011:26:090
8307993731,4cyclictest41-21ksoftirqd/309:52:403
830799371,6cyclictest23957-21df_inode12:00:123
830799370,15cyclictest23286-21/usr/sbin/munin08:45:243
8306993733,3cyclictest33-21ksoftirqd/211:00:002
8306993732,3cyclictest33-21ksoftirqd/212:25:002
8306993732,3cyclictest33-21ksoftirqd/211:54:592
8306993732,3cyclictest33-21ksoftirqd/211:40:202
8306993732,3cyclictest33-21ksoftirqd/210:40:012
8306993732,3cyclictest33-21ksoftirqd/210:20:122
8306993732,3cyclictest33-21ksoftirqd/209:30:012
8306993732,3cyclictest33-21ksoftirqd/208:35:022
8306993731,3cyclictest33-21ksoftirqd/208:00:002
8306993727,9cyclictest33-21ksoftirqd/208:55:232
8305993731,4cyclictest25-21ksoftirqd/109:11:161
830599370,36cyclictest0-21swapper/111:38:131
8306993631,3cyclictest33-21ksoftirqd/211:45:112
8306993631,3cyclictest33-21ksoftirqd/208:45:182
8306993630,4cyclictest33-21ksoftirqd/208:09:352
8306993630,4cyclictest33-21ksoftirqd/207:19:522
8306993630,3cyclictest33-21ksoftirqd/210:40:182
8306993630,3cyclictest33-21ksoftirqd/207:15:002
8306993624,10cyclictest33-21ksoftirqd/210:45:252
830699361,3cyclictest33-21ksoftirqd/212:00:002
830699361,3cyclictest33-21ksoftirqd/211:59:592
8305993631,3cyclictest25-21ksoftirqd/110:33:361
8305993631,3cyclictest25-21ksoftirqd/109:52:441
8305993631,3cyclictest25-21ksoftirqd/107:43:301
8305993630,4cyclictest25-21ksoftirqd/109:09:191
830599360,35cyclictest0-21swapper/107:39:031
8304993631,3cyclictest9-21ksoftirqd/008:13:340
8304993630,4cyclictest9-21ksoftirqd/010:39:280
8304993630,4cyclictest9-21ksoftirqd/009:02:320
830799352,4cyclictest41-21ksoftirqd/310:27:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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