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2026-04-18 - 04:44
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50 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 rack4slot2.osadl.org (updated Sat Apr 18, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74509860,0irq/46-4a10000012-21ksoftirqd/019:01:240
44159910773,0cyclictest5869-21seq20:41:150
44159910773,0cyclictest30096-21users21:51:240
44159910769,0cyclictest4122-21/usr/sbin/munin23:46:140
44159910580,0cyclictest27920-21meminfo20:11:060
44159910568,0cyclictest27202-21munin-run20:10:260
44159910480,0cyclictest31211-21fw_forwarded_lo21:55:570
44159910479,0cyclictest27351-21/usr/sbin/munin23:21:280
44159910467,0cyclictest28945-21latency_hist21:50:270
44159910377,0cyclictest10250-21runrttasks20:55:310
44159910371,0cyclictest7160-21df_inode23:55:460
44159910368,0cyclictest17201-21runrttasks22:50:390
44159910367,0cyclictest25089-21runrttasks23:12:100
44159910367,0cyclictest2320-21/usr/sbin/munin23:41:060
44159910280,0cyclictest5436-21diskstats23:50:490
44159910280,0cyclictest2762-21users22:06:270
44159910280,0cyclictest10468-21df00:05:410
44159910279,0cyclictest3857-21fw_forwarded_lo22:10:560
44159910279,0cyclictest12242-21df_inode19:25:450
44159910278,0cyclictest14329-21ntpdc19:31:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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