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2026-01-07 - 19:54
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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 Jan 07, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591205170,24phc2sys0-21swapper/307:05:523
68242202168,23sleep20-21swapper/207:08:152
68182201169,21sleep10-21swapper/107:08:101
67252196163,22sleep00-21swapper/007:06:550
3234921640,7sleep3741099cyclictest08:00:143
2957121570,2sleep30-21swapper/311:05:233
3205321520,7sleep1740899cyclictest08:00:001
2074321430,3sleep1740899cyclictest11:55:121
138491840,10ptp4l0-21swapper/310:19:033
740799698,19cyclictest30580-21cut07:55:180
740799658,18cyclictest5528-21cat11:25:000
740799648,17cyclictest17714-21apt-config10:45:010
740799629,19cyclictest25003-21/usr/sbin/munin09:55:140
7409996129,8cyclictest33-21ksoftirqd/210:00:002
740799619,18cyclictest26434-21/usr/sbin/munin08:50:230
740799618,12cyclictest24129-21ps10:55:250
740799618,11cyclictest19677-21basename07:35:000
740799617,16cyclictest22390-21chrt10:53:090
740799598,18cyclictest25535-21cpu11:00:130
63192590,4sleep06321-21phc2sys-jitter10:20:230
740799587,19cyclictest18028-21/usr/sbin/munin09:40:160
740799587,11cyclictest16273-21ps08:30:220
7409995730,2cyclictest33-21ksoftirqd/211:45:182
740799569,10cyclictest22532-21head11:55:270
740799568,10cyclictest1841-21uptime10:10:290
740799568,10cyclictest1841-21uptime10:10:280
7409995525,4cyclictest33-21ksoftirqd/209:00:192
740799557,10cyclictest19119-21sensors08:35:240
740799546,9cyclictest0-21swapper/012:35:220
7409995326,7cyclictest33-21ksoftirqd/212:40:012
7409995324,3cyclictest33-21ksoftirqd/209:30:242
7409995323,4cyclictest33-21ksoftirqd/212:15:162
740799538,10cyclictest11296-21ps07:15:230
138491530,1ptp4l401ktimersoftd/312:26:393
7409995220,4cyclictest33-21ksoftirqd/212:25:012
7409995216,4cyclictest33-21ksoftirqd/212:00:002
740799527,11cyclictest29409-21awk11:05:220
56022520,2sleep10-21swapper/108:10:191
56022520,2sleep10-21swapper/108:10:181
740899514,5cyclictest25-21ksoftirqd/110:50:121
740799517,11cyclictest31612-21chrt10:05:470
740799512,12cyclictest8626-21forks11:30:140
7409995031,2cyclictest33-21ksoftirqd/209:25:272
7408995031,8cyclictest25-21ksoftirqd/111:04:591
740799507,9cyclictest0-21swapper/008:20:270
740799507,11cyclictest23463-21sed09:50:200
7409994928,3cyclictest33-21ksoftirqd/210:15:192
7409994921,4cyclictest33-21ksoftirqd/212:05:192
7409994920,7cyclictest33-21ksoftirqd/209:50:182
7409994918,4cyclictest33-21ksoftirqd/208:25:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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