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2025-04-19 - 19:41
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackbslot7.osadl.org (updated Sat Apr 19, 2025 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18075991294,42cyclictest8229-21expr09:35:193
180599911986,23cyclictest17935-21apt-get07:09:540
180599911986,23cyclictest17935-21apt-get07:09:540
180719911845,28cyclictest1926-21find12:20:242
180669911383,21cyclictest0-21swapper/109:35:101
18059991093,69cyclictest21877-21apt-get07:20:050
18059991064,68cyclictest15096-21apt-get08:35:110
180759910310,84cyclictest27453-21apt-get07:35:043
180669910384,10cyclictest0-21swapper/107:10:501
180759910213,77cyclictest18485-21apt-get07:10:103
1806699953,29cyclictest4165-21ssh11:30:201
1807199948,59cyclictest11025-21apt-get09:40:102
1806699949,68cyclictest20089-21kworker/u18:3+ext4-rsv-conversion07:20:121
1806699943,29cyclictest9222-21latency_hist12:34:511
1805999948,65cyclictest9253-21apt-get11:40:040
176312947,56sleep347-21ksoftirqd/307:06:103
176312947,56sleep347-21ksoftirqd/307:06:103
298882930,7sleep30-21swapper/310:15:253
18066999351,33cyclictest0-21swapper/109:34:521
1807599923,79cyclictest9836-21apt-get11:40:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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