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2026-08-14 - 16:49
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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 Fri Aug 14, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74502440,0irq/46-4a10000031797-1kworker/u3:107:07:210
283229821,0sleep02861-21sort10:20:580
1237999658,0cyclictest0-21swapper11:38:180
7450950,0irq/46-4a10000032575-21sendmail-msp08:40:240
7350950,0irq/45-4a10000020113-21runrttasks11:11:170
7450940,0irq/46-4a1000009212-21tune2fs07:30:140
7450940,0irq/46-4a10000031670-21ntp_states08:35:330
7450940,0irq/46-4a1000003110-21ls07:14:500
7450940,0irq/46-4a10000021304-21/usr/sbin/munin08:05:230
7450940,0irq/46-4a1000001660-21entropy07:10:080
7450940,0irq/46-4a10000015888-21df_inode09:25:060
7450940,0irq/46-4a10000014657-21grep10:55:360
7450940,0irq/46-4a10000010299-21sendmail-msp12:20:110
7450930,0irq/46-4a100000795-21ls11:50:290
7450930,0irq/46-4a1000005843-21runrttasks07:20:240
7450930,0irq/46-4a1000004070-21sshd10:25:150
7450930,0irq/46-4a100000379-21df10:14:590
7450930,0irq/46-4a10000029864-21sed10:05:280
7450930,0irq/46-4a10000027856-21sshd10:00:150
7450930,0irq/46-4a10000022616-21df_abs11:20:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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