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2026-04-10 - 09:03
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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 Apr 10, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
745013050,0irq/46-4a10000028332-1kworker/u3:019:01:400
301989910771,0cyclictest30552-21sshd20:38:560
301989910671,0cyclictest26368-21/usr/sbin/munin20:26:230
301989910670,0cyclictest24924-21sendmail_mailst21:56:390
301989910368,0cyclictest16595-21uptime19:56:440
301989910367,0cyclictest25026-21/usr/sbin/munin23:31:390
301989910366,0cyclictest30804-21pluginstate23:50:450
301989910366,0cyclictest19293-21tune2fs20:06:140
301989910279,0cyclictest19581-21memory23:16:280
301989910177,0cyclictest7202-21df21:06:030
301989910176,0cyclictest9151-21fw_conntrack19:36:140
301989910168,0cyclictest3223-21chrt20:54:050
301989910079,0cyclictest9193-21fw_conntrack00:21:170
301989910079,0cyclictest26266-21fw_forwarded_lo23:36:170
301989910078,0cyclictest5515-21df00:11:030
301989910076,0cyclictest18304-21users20:01:460
301989910075,0cyclictest510-21entropy23:56:080
301989910072,0cyclictest9223-21irqstats21:11:230
301989910067,0cyclictest32614-21/usr/sbin/munin20:46:460
301989910067,0cyclictest17141-21sendmail-msp21:35:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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