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2026-07-24 - 02:56
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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 Jul 24, 2026 00:43:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
745012940,0irq/46-4a10000018636-1kworker/u3:019:07:210
18283210029,0sleep018285-21irqstats23:44:070
274962940,0sleep025792-1kworker/u3:221:00:180
81602930,0sleep03949-1kworker/u3:221:39:240
137882910,0sleep012557-1kworker/u3:220:19:540
7350900,0irq/45-4a10000025060-21/usr/sbin/munin19:19:040
230102900,0chrt22787-1kworker/u3:223:58:440
218602909,0sleep021875-21modprobe22:19:270
7450890,0irq/46-4a10000025206-21memory22:29:130
7350890,0irq/45-4a1000003830-21sshd00:37:350
7350880,0irq/45-4a10000028026-21/usr/sbin/munin22:39:030
81592870,0chrt6690-1kworker/u3:123:14:160
7450870,0irq/46-4a1000009114-21sendmail-msp23:18:570
7450870,0irq/46-4a100000591-21sendmail-msp21:19:110
7350870,0irq/45-4a10000027143-21ps19:24:240
7350870,0irq/45-4a10000014669-21df_inode20:23:500
7450860,0irq/46-4a1000009602-21fschecks_count20:08:560
7450860,0irq/46-4a1000006499-21ntpq21:34:180
7450860,0irq/46-4a10000031886-21runrttasks00:24:000
7350860,0irq/45-4a1000006449-21memory19:59:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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