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2026-09-17 - 13:21
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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 Thu Sep 17, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
300972298272,17sleep20-21swapper/219:07:092
301322288263,16sleep10-21swapper/119:07:361
301292269235,20sleep30-21swapper/319:07:343
302262258228,19sleep00-21swapper/019:08:470
326242650,0sleep30-21swapper/300:30:153
25902640,0sleep20-21swapper/221:37:032
278212550,0sleep00-21swapper/023:29:380
98252430,0sleep30-21swapper/322:00:203
42532260,0sleep20-21swapper/223:15:132
101362200,0sleep10-21swapper/121:22:251
291232150,0sleep30-21swapper/323:49:433
226692110,0sleep30-21swapper/322:08:453
27540290,0sleep10-21swapper/121:13:551
981280,0sleep10-21swapper/100:10:541
304609987,1cyclictest34-21ksoftirqd/323:15:013
304579984,3cyclictest20931-21df_inode23:25:122
304579983,3cyclictest275-21systemd-journal22:20:002
304579982,3cyclictest13505-21munin-run21:25:002
304539983,3cyclictest275-21systemd-journal23:34:321
304509987,1cyclictest12-21ksoftirqd/020:20:010
26852280,0sleep30-21swapper/321:51:233
9951270,0sleep00-21swapper/022:59:310
304609976,1cyclictest3198-21ssh21:37:303
304609976,1cyclictest30499-21ssh22:51:453
304609973,3cyclictest14415-21snmpd23:31:093
304609973,3cyclictest14415-21snmpd23:03:073
304609973,1cyclictest0-21swapper/321:42:023
304609970,6cyclictest13986-21hddtemp_smartct23:40:153
304579975,1cyclictest15494-21cron21:00:012
304579973,3cyclictest560-21gdbus21:15:052
304579973,3cyclictest275-21systemd-journal23:58:182
304579973,3cyclictest275-21systemd-journal20:45:012
304579973,3cyclictest25152-21cat21:50:192
304579972,3cyclictest275-21systemd-journal21:04:592
304579970,1cyclictest13038-21ssh21:43:382
304539974,2cyclictest275-21systemd-journal00:40:001
304539973,3cyclictest560-21gdbus22:00:001
304539973,3cyclictest21148-21munin-plugin-st23:45:001
304539973,3cyclictest14415-21snmpd23:00:451
304539973,3cyclictest14415-21snmpd20:11:251
304539973,3cyclictest14415-21snmpd19:12:201
304539973,2cyclictest275-21systemd-journal00:16:591
304539972,4cyclictest14415-21snmpd21:18:451
304539971,4cyclictest31691-21dump-pmu-power21:55:011
304509973,3cyclictest6953-21ntpq23:55:150
304509973,3cyclictest275-21systemd-journal00:25:000
304509973,3cyclictest14415-21snmpd19:28:460
304509973,3cyclictest0-21swapper/021:57:260
304509973,1cyclictest0-21swapper/021:38:380
304509972,4cyclictest50950irq/137-enp4s0-22:10:120
2725270,0sleep30-21swapper/322:55:093
26255270,0sleep30-21swapper/323:28:253
15091270,0sleep30-21swapper/300:39:233
304609966,0cyclictest0-21swapper/322:26:573
304609963,2cyclictest8937-21ssh00:15:273
304609963,2cyclictest504-21dbus-daemon19:30:143
304609963,2cyclictest4128-21chrt00:13:213
304609963,2cyclictest26474-21ssh00:26:043
304609963,2cyclictest14415-21snmpd22:21:533
304609963,2cyclictest14415-21snmpd21:32:363
304609963,2cyclictest14415-21snmpd20:55:543
304609963,2cyclictest14415-21snmpd19:50:283
304609963,2cyclictest11533-21threads22:40:183
304609963,1cyclictest0-21swapper/323:15:523
304609962,3cyclictest6131-21cat23:55:123
304609962,3cyclictest275-21systemd-journal23:05:063
304609962,3cyclictest25400-11brltty20:15:253
304609962,3cyclictest1959-21awk22:15:223
304609962,3cyclictest19267-21ntpq21:05:193
304609962,3cyclictest16135-21if_enp4s000:20:153
304609962,3cyclictest15464-21cat19:45:163
304609962,3cyclictest14557-21expr00:00:133
304609962,3cyclictest14415-21snmpd21:24:283
304609962,3cyclictest14415-21snmpd21:15:063
304609962,3cyclictest14415-21snmpd21:02:423
304609962,3cyclictest14415-21snmpd20:48:393
304609962,3cyclictest14415-21snmpd19:20:513
304609962,3cyclictest14415-21snmpd19:13:463
304609962,3cyclictest0-21swapper/322:36:143
304609962,3cyclictest0-21swapper/321:11:473
304609962,1cyclictest0-21swapper/322:45:373
304609962,1cyclictest0-21swapper/322:13:143
304609962,1cyclictest0-21swapper/321:25:423
304609961,3cyclictest275-21systemd-journal23:20:263
304609961,3cyclictest275-21systemd-journal21:55:103
304609960,5cyclictest27482-21users22:30:193
304609960,2cyclictest29979-21/usr/sbin/munin23:50:183
304609960,2cyclictest23067-21diskstats00:05:173
304609960,0cyclictest0-21swapper/323:36:213
304579966,0cyclictest0-21swapper/223:22:372
304579966,0cyclictest0-21swapper/222:00:222
304579964,2cyclictest503-21rs:main2
304579964,1cyclictest60450irq/148-enp6s0-21:13:072
304579964,1cyclictest29616-21kworker/u8:122:45:132
304579963,2cyclictest31957-21expr19:10:192
304579963,2cyclictest31397-21ssh23:30:452
304579963,2cyclictest27332-21ssh22:10:542
304579963,2cyclictest17552-21cpuspeed_turbos22:25:132
304579963,2cyclictest14415-21snmpd22:39:062
304579963,2cyclictest14415-21snmpd21:56:562
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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