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2025-11-21 - 11:28
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 50 highest latencies:
System rack2slot7.osadl.org (updated Fri Nov 21, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
152255999453,38cyclictest1595622-21strings21:53:070
152255999374,19cyclictest0-21swapper/023:36:010
152255999352,31cyclictest0-21swapper/022:08:270
152256199343,7cyclictest171rcu_preempt23:33:062
1522561993423,8cyclictest111788-21systemd-journal00:10:572
1522560993317,11cyclictest1630316-21ssh22:33:051
152255999333,15cyclictest0-21swapper/023:03:010
152255999331,24cyclictest1685761-21ssh23:35:570
152255999316,23cyclictest1719772-21ntpq00:13:080
1522561993024,6cyclictest351ktimers/220:26:562
1522560993024,3cyclictest1552574-21sendmail20:45:571
152255999301,5cyclictest1730130-21latency_hist00:25:570
1522560992922,5cyclictest1695361-21kworker/u8:1+events_unbound23:58:091
152255999299,5cyclictest11050irq/107-eth%d23:47:580
1522561992825,2cyclictest1522558-21cyclictest23:23:082
152256099281,6cyclictest171rcu_preempt19:48:041
1522560992813,9cyclictest11050irq/107-eth%d21:38:051
1522559992822,1cyclictest0-21swapper/021:50:580
1522559992819,3cyclictest1692316-21gltestperf23:43:000
1522560992717,5cyclictest0-21swapper/122:10:581
152255999273,1cyclictest0-21swapper/019:25:580
152255999270,1cyclictest0-21swapper/022:43:090
152256099250,3cyclictest171rcu_preempt20:26:561
1522559992520,0cyclictest0-21swapper/019:37:580
152255999251,2cyclictest1701459-21tune2fs23:53:010
152255999251,23cyclictest0-21swapper/020:52:580
1522559992510,3cyclictest1729996-21sendmail-msp00:27:260
152256299243,7cyclictest0-21swapper/300:10:573
152256199247,1cyclictest171rcu_preempt22:53:052
152255999245,15cyclictest1007-21mta-sts-daemon22:38:040
152255999243,7cyclictest1545983-21sendmail-msp20:29:110
1522559992412,3cyclictest1615265-21latency_hist22:15:570
152255999240,3cyclictest1568883-21fschecks_time21:23:010
112699240,2rtkit-daemon1125-21rtkit-daemon19:57:282
1522561992313,5cyclictest321irq_work/221:38:052
1522560992319,3cyclictest1528449-21fschecks_time19:33:011
1522559992317,2cyclictest1561882-21collect221:13:050
152255999231,21cyclictest111788-21systemd-journal22:49:220
1522559992311,6cyclictest11050irq/107-eth%d00:38:390
1522559992311,1cyclictest0-21swapper/022:28:070
152256199221,16cyclictest1610919-21wc22:10:582
1522561992210,10cyclictest351ktimers/223:53:052
152255999223,17cyclictest111788-21systemd-journal23:08:440
152255999222,2cyclictest1565401-21unixbench_multi21:18:090
152255999222,2cyclictest1565401-21unixbench_multi21:18:090
152256199216,1cyclictest171rcu_preempt19:26:012
152255999219,5cyclictest1560723-21unixbench_multi21:08:110
152255999211,20cyclictest0-21swapper/023:18:010
152256199204,10cyclictest619-21mta-sts-daemon23:58:092
1522561992017,2cyclictest0-21swapper/221:31:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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