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2026-07-22 - 17:44
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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 Jul 22, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
745013050,0irq/46-4a10000010860-1kworker/u3:107:06:050
7350970,0irq/45-4a10000012858-21diskstats08:38:590
7450960,0irq/46-4a1000007604-21df11:33:500
7450960,0irq/46-4a100000438-21snmpd08:03:350
7450950,0irq/46-4a10000015099-21sendmail_mailst08:44:310
7450950,0irq/46-4a10000012525-21/usr/sbin/munin10:14:210
13561999556,0cyclictest0-21swapper10:12:420
7450940,0irq/46-4a1000009470-21chrt08:29:020
7450940,0irq/46-4a10000021776-21runrttasks09:04:240
7450940,0irq/46-4a10000016855-21/usr/sbin/munin11:59:410
7450930,0irq/46-4a1000009834-21/usr/sbin/munin11:39:320
7450930,0irq/46-4a1000005068-21chrt08:14:360
7450930,0irq/46-4a10000028235-21df_inode09:23:590
7450930,0irq/46-4a10000027258-21/usr/sbin/munin12:29:350
7450930,0irq/46-4a10000025603-21runrttasks10:49:530
7450930,0irq/46-4a10000023701-21switchtime10:44:300
7450930,0irq/46-4a1000002291-21/usr/sbin/munin08:09:250
7450930,0irq/46-4a10000016433-21if_err_eth008:49:060
7450930,0irq/46-4a10000014688-21fschecks_time10:19:060
7450930,0irq/46-4a10000011431-21load08:34:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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