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2025-09-18 - 01:17
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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 50 highest latencies:
System rackdslot4.osadl.org (updated Wed Sep 17, 2025 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
62332235169,22sleep10-21swapper/107:06:251
63842202169,22sleep20-21swapper/207:08:232
134791202169,22phc2sys0-21swapper/307:05:383
64982201165,24sleep00-21swapper/007:09:410
6814996911,19cyclictest24930-21df_abs09:55:140
134991670,3ptp4l41-21ksoftirqd/307:15:263
681499641,22cyclictest31706-21cat10:10:010
681499630,23cyclictest11538-21date08:24:590
681499610,19cyclictest27372-21cat12:10:180
681499590,17cyclictest0-21swapper/007:20:120
681499581,20cyclictest12287-21perl11:40:170
168382580,2sleep10-21swapper/111:50:151
50262570,4sleep25030-21fschecks_time12:30:162
6814995610,24cyclictest22894-21memory10:55:220
134991560,1ptp4l401ktimersoftd/310:13:203
681499550,21cyclictest7421-21perl07:10:160
134991540,1ptp4l401ktimersoftd/311:58:173
681499490,20cyclictest4076-21seq12:28:090
134991470,0ptp4l401ktimersoftd/312:10:123
681499460,26cyclictest18779-21taskset10:46:190
134991460,1ptp4l401ktimersoftd/309:54:383
6816994338,3cyclictest14006-21cron07:25:012
134991430,0ptp4l401ktimersoftd/311:40:013
6815994218,21cyclictest0-21swapper/110:50:261
134991420,1ptp4l401ktimersoftd/309:01:033
134991420,1ptp4l401ktimersoftd/309:01:033
134991410,0ptp4l401ktimersoftd/312:05:233
134991410,0ptp4l401ktimersoftd/311:35:193
681499401,25cyclictest5406-21awk08:10:240
134991400,0ptp4l401ktimersoftd/311:25:183
134991400,0ptp4l401ktimersoftd/309:30:183
6816993933,3cyclictest33-21ksoftirqd/211:05:002
6814993934,3cyclictest9-21ksoftirqd/009:15:010
6815993832,4cyclictest25-21ksoftirqd/111:20:341
6815993832,4cyclictest25-21ksoftirqd/108:30:001
6815993832,3cyclictest25-21ksoftirqd/111:40:001
36998380,4rtkit-daemon12437-21/usr/sbin/munin09:30:181
6817993732,3cyclictest41-21ksoftirqd/307:55:003
6817993731,4cyclictest41-21ksoftirqd/312:35:063
6817993731,4cyclictest41-21ksoftirqd/311:24:463
6817993731,4cyclictest41-21ksoftirqd/310:40:373
6817993731,4cyclictest41-21ksoftirqd/310:17:193
6817993731,4cyclictest41-21ksoftirqd/309:28:403
6816993732,3cyclictest28786-21cron07:55:002
6816993731,4cyclictest33-21ksoftirqd/210:05:012
6816993731,4cyclictest33-21ksoftirqd/209:21:442
681499370,17cyclictest0-21swapper/008:25:270
6817993631,3cyclictest41-21ksoftirqd/312:30:123
6817993631,3cyclictest41-21ksoftirqd/308:14:353
6817993630,4cyclictest41-21ksoftirqd/311:46:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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