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2026-09-19 - 08:11
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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 20 highest latencies:
System rackdslot3.osadl.org (updated Sat Sep 19, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
300502204169,23sleep30-21swapper/319:05:483
300522203170,22sleep00-21swapper/019:05:480
302662202170,21sleep20-21swapper/219:08:352
301412202169,22sleep10-21swapper/119:06:581
889721620,6sleep13066899cyclictest19:30:151
1244321210,2sleep30-21swapper/300:05:423
3066999685,23cyclictest15596-21/usr/sbin/munin19:45:212
3066999684,61cyclictest31439-21kworker/2:123:55:332
3067099630,28cyclictest11774-21irqstats19:35:213
3067099610,28cyclictest15330-21dpkg22:00:113
3067099610,24cyclictest21122-21missed_timers22:10:223
3067099601,23cyclictest1300-21snmpd00:20:143
3067099601,23cyclictest1300-21snmpd00:20:133
3066999606,51cyclictest13216-21kworker/2:220:45:532
3066999604,16cyclictest17962-21/usr/sbin/munin19:50:172
3067099590,33cyclictest32412-21sort22:35:153
3067099590,24cyclictest12969-21ps23:00:233
3067099590,23cyclictest27721-21/usr/sbin/munin22:25:163
3067099581,25cyclictest207-21systemd-journal21:01:043
3067099570,23cyclictest31357-21users22:30:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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