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2026-06-25 - 09:49
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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 Thu Jun 25, 2026 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
93572225166,48sleep10-21swapper/119:05:581
138591205171,23phc2sys0-21swapper/319:05:363
94402203170,22sleep20-21swapper/219:07:042
95502202168,22sleep00-21swapper/019:08:310
138491770,2ptp4l401ktimersoftd/319:10:023
996799666,12cyclictest12184-21latency_hist20:20:001
996799636,11cyclictest2592-21cpuspeed_turbos21:05:121
996799635,12cyclictest27554-21tr20:50:131
996799635,12cyclictest26718-21sed20:45:271
996799635,12cyclictest21471-21ls20:35:251
9967996310,10cyclictest18688-21ls22:40:241
996799628,10cyclictest30609-21ls23:05:201
996799628,10cyclictest11577-21ls19:10:251
996799627,11cyclictest19504-21latency_hist20:35:001
996799618,16cyclictest25914-21sed00:00:271
996799617,10cyclictest16325-21mailstats20:25:221
996799617,10cyclictest13877-21gzip19:15:231
996799615,12cyclictest0-21swapper/123:00:261
996799614,17cyclictest0-21swapper/121:50:231
996799614,16cyclictest0-21swapper/121:20:001
996799609,9cyclictest8405-21cut23:25:211
996799606,11cyclictest10338-21fschecks_count00:35:151
996799605,10cyclictest24692-21latency_hist20:45:001
996799604,17cyclictest0-21swapper/119:55:121
996799604,16cyclictest0-21swapper/123:55:241
996799597,10cyclictest28727-21ls00:05:251
996799597,10cyclictest14311-21latency_hist23:40:001
996799596,12cyclictest2337-21apt-config20:00:011
996799596,11cyclictest24614-21latency_hist20:45:001
996799595,12cyclictest23113-21irqrtprio21:45:191
996799594,10cyclictest0-21swapper/120:10:261
996799592,16cyclictest0-21swapper/122:00:221
996799586,9cyclictest15333-21cut23:40:191
996799586,11cyclictest30771-21cut20:55:161
996799585,9cyclictest0-21swapper/100:20:001
996799585,17cyclictest5428-21irqrtprio23:20:161
996799584,17cyclictest3682-21switchtime22:10:251
996799584,17cyclictest0-21swapper/123:20:001
996799584,17cyclictest0-21swapper/123:20:001
996799577,16cyclictest20963-21grep21:40:221
996799577,16cyclictest20963-21grep21:40:221
996799576,15cyclictest1325-21cat22:05:241
996799576,10cyclictest28711-21sed21:55:271
9966995727,4cyclictest9-21ksoftirqd/020:35:150
46732570,3sleep24672-21date00:24:592
138491570,1ptp4l401ktimersoftd/322:52:113
138491570,1ptp4l401ktimersoftd/322:07:493
996799569,9cyclictest24616-21grep22:55:131
996799567,16cyclictest10650-21irqrtprio22:25:191
996799566,9cyclictest31026-21phc2sys-jitter19:50:221
996799566,9cyclictest12061-21latency_hist21:25:011
9967995611,10cyclictest22640-21/usr/sbin/munin22:50:171
9966995625,6cyclictest9-21ksoftirqd/023:35:150
138491560,1ptp4l391rcuc/322:40:133
996799556,15cyclictest9547-21sed22:25:011
996799556,10cyclictest32734-21df_abs21:00:131
996799555,10cyclictest15785-21latency21:30:181
996799553,18cyclictest0-21swapper/123:35:001
996799553,10cyclictest0-21swapper/121:35:211
9966995525,4cyclictest9-21ksoftirqd/020:20:270
9966995522,6cyclictest9-21ksoftirqd/022:55:180
996799548,8cyclictest20448-21sed22:45:181
996799547,11cyclictest6560-21ls20:05:241
996799546,8cyclictest31960-21latency_hist00:15:001
996799545,10cyclictest6383-21tr00:25:241
996799544,18cyclictest0-21swapper/122:15:201
996799544,17cyclictest0-21swapper/119:35:001
996799544,11cyclictest0-21swapper/119:45:201
996799543,17cyclictest0-21swapper/122:35:181
996799543,16cyclictest0-21swapper/122:30:181
9966995425,5cyclictest9-21ksoftirqd/020:55:010
9966995424,4cyclictest9-21ksoftirqd/019:45:000
9966995421,6cyclictest9-21ksoftirqd/020:30:140
9966995326,6cyclictest9-21ksoftirqd/019:35:160
9966995324,7cyclictest9-21ksoftirqd/023:00:130
996799528,9cyclictest23622-21ps19:35:241
996799526,11cyclictest32052-21cat23:10:121
996799525,16cyclictest0-21swapper/119:20:241
996799525,15cyclictest24821-21sort19:40:131
996799525,15cyclictest19247-21latency_hist23:50:011
9966995227,11cyclictest9-21ksoftirqd/021:15:000
9966995220,5cyclictest9-21ksoftirqd/020:10:260
9966995219,4cyclictest9-21ksoftirqd/021:45:000
9966995219,4cyclictest9-21ksoftirqd/021:45:000
9966995217,5cyclictest9-21ksoftirqd/000:30:180
213892520,2sleep00-21swapper/019:30:250
996799517,16cyclictest13750-21grep21:25:221
996799516,16cyclictest18343-21irqrtprio19:25:171
9966995125,7cyclictest9-21ksoftirqd/000:00:140
9966995124,4cyclictest9-21ksoftirqd/023:15:150
9966995124,4cyclictest9-21ksoftirqd/023:15:150
9966995120,6cyclictest9-21ksoftirqd/022:30:120
9968995018,7cyclictest33-21ksoftirqd/223:25:002
996799506,10cyclictest14659-21ls20:25:001
996799504,10cyclictest9007-21sed00:30:261
9966995022,5cyclictest9-21ksoftirqd/020:40:250
9966995022,5cyclictest9-21ksoftirqd/020:40:250
9966995022,3cyclictest9-21ksoftirqd/021:30:130
9966995019,5cyclictest9-21ksoftirqd/019:20:170
9966995016,10cyclictest9-21ksoftirqd/022:15:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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