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2026-06-24 - 04:57
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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 Wed Jun 24, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74501960,0irq/46-4a1000006913-21runrttasks19:08:590
7350970,0irq/45-4a1000009583-21egrep22:24:590
7350940,0irq/45-4a1000001513-21/usr/sbin/munin22:00:280
185502930,0sleep08046-1kworker/u3:119:40:260
7350900,0irq/45-4a1000001499-21/usr/sbin/munin23:35:250
7450860,0irq/46-4a1000007070-21sed22:15:450
7450860,0irq/46-4a10000014254-21runrttasks21:03:110
39472860,0sleep03072-1kworker/u3:022:07:480
165752860,0sleep015957-1kworker/u3:221:10:040
7450850,0irq/46-4a10000019602-21sendmail-msp21:20:220
7350850,0irq/45-4a10000021564-21/usr/sbin/munin22:59:560
124282850,0sleep010676-1kworker/u3:219:22:050
7450840,0irq/46-4a1000008140-21grep22:20:140
7450840,0irq/46-4a100000438-21snmpd00:04:510
7450840,0irq/46-4a10000024676-21cron21:34:420
7350840,0irq/45-4a10000028132-21sendmail-msp23:20:000
7350840,0irq/45-4a10000027339-21/usr/sbin/munin23:15:350
123782840,0sleep010855-1kworker/u3:222:31:530
93492838,0sleep09325-21munin-run23:59:470
7450830,0irq/46-4a10000030139-21expr20:14:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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