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2025-12-22 - 04:31
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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 100 highest latencies:
System rackaslot8.osadl.org (updated Mon Dec 22, 2025 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
107052314288,17sleep20-21swapper/219:07:512
107832290263,18sleep10-21swapper/119:08:501
105732280250,20sleep00-21swapper/019:06:240
107222255222,21sleep30-21swapper/319:08:033
92562620,0sleep20-21swapper/220:15:162
262002610,0sleep20-21swapper/219:40:182
190042210,1sleep3331rcuc/300:10:223
109789996,2cyclictest34-21ksoftirqd/319:25:013
109749996,2cyclictest28-21ksoftirqd/220:00:012
109749983,3cyclictest17390-21munin-run00:09:592
109619981,5cyclictest275-21systemd-journal19:15:290
25812270,0sleep30-21swapper/319:40:143
20604270,0sleep30-21swapper/319:30:013
20604270,0sleep30-21swapper/319:30:013
109789976,1cyclictest25954-21turbostat.cron22:05:003
109789974,2cyclictest34-21ksoftirqd/323:40:023
109789974,2cyclictest275-21systemd-journal22:36:293
109789973,3cyclictest658-21snmpd20:24:233
109789973,3cyclictest275-21systemd-journal00:28:243
109789973,3cyclictest22059-21awk20:45:133
109789973,2cyclictest275-21systemd-journal21:35:163
109789973,2cyclictest275-21systemd-journal00:10:003
109749974,2cyclictest275-21systemd-journal23:29:322
109749973,3cyclictest658-21snmpd22:10:472
109749973,3cyclictest504-21dbus-daemon20:30:172
109749970,4cyclictest432-21ls21:10:012
109699973,3cyclictest658-21snmpd21:42:371
109699973,3cyclictest658-21snmpd21:32:481
109699973,3cyclictest275-21systemd-journal23:12:511
109699972,3cyclictest18255-21munin-run19:25:011
109699970,4cyclictest21760-21perf20:45:011
109619974,2cyclictest504-21dbus-daemon21:06:530
109619973,3cyclictest658-21snmpd20:00:400
109619972,3cyclictest24380-21grep00:25:010
109619971,3cyclictest12260-21dpkg21:35:000
109619970,4cyclictest13680-21ls22:50:010
109789966,0cyclictest0-21swapper/320:10:243
109789966,0cyclictest0-21swapper/300:20:223
109789963,2cyclictest663-21runrttasks21:55:283
109789963,2cyclictest663-21runrttasks21:14:383
109789963,2cyclictest5298-21taskset21:17:083
109789963,2cyclictest504-21dbus-daemon22:27:243
109789963,2cyclictest504-21dbus-daemon22:06:323
109789963,2cyclictest504-21dbus-daemon20:05:183
109789963,2cyclictest504-21dbus-daemon20:02:163
109789963,2cyclictest32222-21df23:30:133
109789963,2cyclictest1-21systemd22:20:193
109789963,2cyclictest11417-21wc21:30:193
109789962,3cyclictest6700-21sshd22:32:163
109789962,3cyclictest658-21snmpd23:03:213
109789962,3cyclictest658-21snmpd22:40:193
109789962,3cyclictest658-21snmpd22:17:533
109789962,3cyclictest658-21snmpd21:48:193
109789962,3cyclictest658-21snmpd21:03:353
109789962,3cyclictest658-21snmpd20:55:533
109789962,3cyclictest658-21snmpd20:36:013
109789962,3cyclictest658-21snmpd20:34:373
109789962,3cyclictest658-21snmpd19:59:403
109789962,3cyclictest658-21snmpd00:32:063
109789962,3cyclictest29722-21cat00:35:153
109789962,3cyclictest27472-21cat23:20:123
109789962,3cyclictest23541-21cat23:10:153
109789962,3cyclictest20048-21expr20:40:143
109789962,3cyclictest12333-21ls22:45:153
109789962,3cyclictest1-21systemd23:45:223
109789962,3cyclictest10321-21seq20:16:473
109789960,5cyclictest14305-21df22:50:123
109789960,5cyclictest13303-21sed19:15:023
109749963,2cyclictest8181-21sshd23:46:542
109749963,2cyclictest658-21snmpd20:46:562
109749963,2cyclictest504-21dbus-daemon19:15:022
109749963,2cyclictest3004-21sh21:15:012
109749963,2cyclictest24369-21idleruntime-cro00:25:002
109749962,3cyclictest674-21lldpd20:23:132
109749962,3cyclictest658-21snmpd23:19:142
109749962,3cyclictest658-21snmpd23:01:542
109749962,3cyclictest658-21snmpd22:54:002
109749962,3cyclictest658-21snmpd22:26:552
109749962,3cyclictest658-21snmpd21:47:342
109749962,3cyclictest658-21snmpd19:20:242
109749962,3cyclictest5118-21expr20:05:192
109749962,3cyclictest504-21dbus-daemon23:25:012
109749962,3cyclictest31025-21expr22:15:172
109749962,3cyclictest30581-21ntpq19:50:182
109749962,3cyclictest29470-21cat21:00:172
109749962,3cyclictest27706-21expr00:30:162
109749962,3cyclictest275-21systemd-journal23:37:292
109749962,3cyclictest21532-21grep23:05:162
109749962,3cyclictest13473-21cat21:35:182
109749962,3cyclictest12643-21ntpq22:45:162
109749961,3cyclictest8394-21perf20:15:002
109749961,3cyclictest275-21systemd-journal23:32:522
109749961,3cyclictest275-21systemd-journal21:20:152
109749961,3cyclictest275-21systemd-journal20:52:182
109749960,5cyclictest0-21swapper/220:05:012
109749960,3cyclictest22709-21perf19:35:012
109699963,2cyclictest658-21snmpd21:24:241
109699963,2cyclictest658-21snmpd20:39:351
109699963,2cyclictest501-21in:imuxsock19:40:101
109699963,2cyclictest32138-21unixbench_multi22:15:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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