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2026-09-01 - 00:57
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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 Mon Aug 31, 2026 12:44:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74505330,0irq/46-4a10000027484-1kworker/u3:107:04:240
30496999373,0cyclictest0-21swapper10:14:190
239222910,0sleep022228-1kworker/u3:008:21:440
7350900,0irq/45-4a1000007856-21ntpdc10:44:590
30496999058,0cyclictest0-21swapper10:54:300
30496999058,0cyclictest0-21swapper10:09:550
7350890,0irq/45-4a1000008879-21sendmail-msp07:44:430
7350890,0irq/45-4a10000011214-21/usr/sbin/munin12:29:500
38622898,0sleep03919-21egrep10:34:170
30496998957,0cyclictest0-21swapper08:29:550
30496998956,0cyclictest0-21swapper12:10:060
30496998956,0cyclictest0-21swapper09:09:570
30496998956,0cyclictest0-21swapper08:34:400
7350880,0irq/45-4a100000905-1kworker/u3:108:04:360
7350880,0irq/45-4a1000005701-21df_inode12:14:230
30496998858,0cyclictest0-21swapper08:14:450
30496998857,0cyclictest0-21swapper07:49:330
30496998856,0cyclictest0-21swapper08:49:360
30496998855,0cyclictest0-21swapper07:54:380
7350870,0irq/45-4a10000025442-1kworker/u3:210:02:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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