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2025-06-28 - 23:07
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 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 rack1slot2.osadl.org (updated Sat Jun 28, 2025 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
838423826,0sleep20-21swapper/206:28:232
136623828,0sleep30-21swapper/306:23:553
821723525,0sleep10-21swapper/106:26:251
807923026,0sleep00-21swapper/006:24:480
329970,0watchdog/331384-21fschecks_time07:29:093
329970,0watchdog/321876-21sh11:01:173
329970,0watchdog/315170-21ssh09:19:253
329970,0watchdog/30-21swapper/311:09:133
329970,0watchdog/30-21swapper/310:19:093
329970,0watchdog/30-21swapper/309:59:053
29925070,0irq/32-eth0-rx-27730-21munin-node09:49:073
29925070,0irq/32-eth0-rx-23946-21open_inodes09:44:153
29925070,0irq/32-eth0-rx-0-21swapper/311:23:173
29925070,0irq/32-eth0-rx-0-21swapper/310:12:083
29925070,0irq/32-eth0-rx-0-21swapper/309:14:083
84919966,0cyclictest28226-21ntpq08:49:160
84919965,0cyclictest11741-21ssh10:35:320
8315060,0irq/26-0000:00:10027-21if_eth1.307:14:062
35160,0ktimersoftd/30-21swapper/308:40:473
339960,0migration/37980-21sh09:34:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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