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2025-08-28 - 22:23
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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 rackdslot3.osadl.org (updated Thu Aug 28, 2025 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
240722208175,22sleep00-21swapper/007:08:040
240692206172,22sleep20-21swapper/207:08:022
240482204171,22sleep10-21swapper/107:07:451
240132203169,23sleep30-21swapper/307:07:183
2888821700,3sleep12451899cyclictest10:40:151
1223921650,5sleep12451899cyclictest11:10:291
2573021560,4sleep32452099cyclictest08:20:003
136991660,1ptp4l401ktimersoftd/307:25:013
136991660,1ptp4l401ktimersoftd/307:25:013
136952590,4sleep233-21ksoftirqd/211:15:182
136991570,1ptp4l401ktimersoftd/310:00:573
136991550,1ptp4l401ktimersoftd/311:33:023
2451799535,8cyclictest9-21ksoftirqd/008:45:180
24517995249,2cyclictest111rcuc/008:00:220
2451799524,8cyclictest9-21ksoftirqd/012:05:190
2451799516,9cyclictest9-21ksoftirqd/008:40:230
2451799512,6cyclictest9-21ksoftirqd/007:20:230
2451799506,6cyclictest9-21ksoftirqd/009:25:010
2451799505,6cyclictest29326-21apt-get11:49:590
2451799504,9cyclictest9-21ksoftirqd/009:30:180
2451799494,8cyclictest9-21ksoftirqd/011:39:580
24517994946,2cyclictest111rcuc/010:35:170
2451799493,5cyclictest9-21ksoftirqd/011:05:280
2451799492,6cyclictest9-21ksoftirqd/011:25:240
2451799492,6cyclictest9-21ksoftirqd/010:30:120
2451799492,5cyclictest9-21ksoftirqd/009:45:210
2451799492,5cyclictest9-21ksoftirqd/008:10:140
136991490,1ptp4l401ktimersoftd/311:47:433
132891490,2getstats0-21swapper/311:35:593
2451799486,6cyclictest9-21ksoftirqd/009:45:010
2451799485,9cyclictest9-21ksoftirqd/010:55:150
2451799485,9cyclictest9-21ksoftirqd/009:55:230
2451799485,8cyclictest9-21ksoftirqd/008:35:200
2451799485,5cyclictest9-21ksoftirqd/008:35:010
2451799484,9cyclictest9-21ksoftirqd/012:03:580
2451799483,8cyclictest9-21ksoftirqd/009:35:210
59298470,2rtkit-daemon591-21rtkit-daemon10:22:161
24519994737,5cyclictest33-21ksoftirqd/212:00:122
2451799475,9cyclictest9-21ksoftirqd/007:25:240
2451799475,9cyclictest9-21ksoftirqd/007:25:230
2451799475,5cyclictest9-21ksoftirqd/011:55:200
2451799475,5cyclictest9-21ksoftirqd/011:40:160
2451799475,10cyclictest9-21ksoftirqd/010:40:140
2451799472,5cyclictest9-21ksoftirqd/010:20:230
2451799472,5cyclictest9-21ksoftirqd/007:50:230
2451799471,5cyclictest9-21ksoftirqd/011:30:170
2451799471,5cyclictest9-21ksoftirqd/009:00:230
2451799470,4cyclictest9-21ksoftirqd/009:15:230
2451799465,7cyclictest9-21ksoftirqd/011:50:230
2451799464,8cyclictest9-21ksoftirqd/010:45:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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