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2026-07-30 - 11:08
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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 Thu Jul 30, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15310211700,0chrt13788-1kworker/u3:119:05:190
7450920,0irq/46-4a1000009437-21sendmail-msp21:58:430
7450920,0irq/46-4a10000028781-21tune2fs21:18:500
7450920,0irq/46-4a10000028248-21sendmail-msp21:18:170
7450920,0irq/46-4a1000002681-21/usr/sbin/munin23:13:240
7450920,0irq/46-4a10000026672-21seq22:48:280
7450920,0irq/46-4a10000013428-21/usr/sbin/munin20:33:480
7450920,0irq/46-4a10000010093-21/usr/sbin/munin20:23:520
7450910,0irq/46-4a1000009552-21/usr/sbin/munin23:33:270
7450910,0irq/46-4a1000006557-21tune2fs23:23:450
7450910,0irq/46-4a1000006450-21diskstats20:13:400
7450910,0irq/46-4a1000004300-21sendmail-msp23:19:180
7450910,0irq/46-4a10000032515-21ps21:29:080
7450910,0irq/46-4a10000025302-21tune2fs19:33:420
7450910,0irq/46-4a10000021892-21fschecks_count19:23:420
7450910,0irq/46-4a10000020880-21users20:54:160
7450910,0irq/46-4a10000020349-21/usr/sbin/munin19:18:590
7450910,0irq/46-4a10000017078-21runrttasks22:19:130
7450910,0irq/46-4a10000011174-21/usr/sbin/munin23:38:440
7450900,0irq/46-4a1000008517-21ntpq21:54:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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