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2025-12-22 - 18:12
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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 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
232652292262,19sleep10-21swapper/107:06:211
233722267244,14sleep20-21swapper/207:07:432
234252265233,21sleep00-21swapper/007:08:250
232622251223,19sleep30-21swapper/307:06:193
140482150,0sleep20-21swapper/207:55:202
2365799111,9cyclictest22613-21turbostat11:55:003
236579995,3cyclictest18137-21cron11:45:003
236579986,1cyclictest34-21ksoftirqd/308:10:003
236539985,2cyclictest14836-21runrttasks08:00:132
236469986,1cyclictest12-21ksoftirqd/011:00:000
236469983,3cyclictest275-21systemd-journal08:03:130
236579974,2cyclictest4976-11brltty07:45:173
236579973,3cyclictest9457-21apt-get11:25:133
236579973,3cyclictest658-21snmpd11:56:083
236579973,3cyclictest658-21snmpd11:30:593
236579973,3cyclictest658-21snmpd08:51:063
236579973,3cyclictest504-21dbus-daemon10:10:023
236579973,3cyclictest19543-21apt-get10:35:123
236579973,3cyclictest11566-21ntpq10:15:183
236539973,3cyclictest658-21snmpd12:12:152
236539973,3cyclictest658-21snmpd08:13:132
236539973,3cyclictest504-21dbus-daemon12:10:002
236539973,3cyclictest275-21systemd-journal07:25:172
236539973,3cyclictest13655-21cron11:35:002
236509974,2cyclictest275-21systemd-journal10:00:011
236509974,2cyclictest2490-21sh11:10:001
236509973,3cyclictest658-21snmpd11:51:021
236509973,3cyclictest14748-21ntpq09:10:171
236509971,3cyclictest22-21ksoftirqd/109:30:011
236469974,3cyclictest23171-21apt-get11:55:130
236469974,2cyclictest275-21systemd-journal08:40:460
236469973,3cyclictest560-21gdbus08:00:010
236469973,3cyclictest3604-21ntpq08:45:160
236469973,3cyclictest29913-21sshd12:11:000
236469973,3cyclictest275-21systemd-journal11:20:000
236469973,3cyclictest275-21systemd-journal10:17:320
236469973,3cyclictest275-21systemd-journal08:33:380
236469973,3cyclictest275-21systemd-journal08:19:530
236469971,2cyclictest141rcu_preempt08:54:590
2045270,1sleep00-21swapper/011:05:210
5407260,0sleep10-21swapper/108:50:161
236579963,2cyclictest8056-21ntpq08:55:193
236579963,2cyclictest658-21snmpd12:33:223
236579963,2cyclictest658-21snmpd08:20:133
236579963,2cyclictest275-21systemd-journal12:15:003
236579963,2cyclictest1-21systemd08:00:193
236579962,3cyclictest821-21expr11:05:153
236579962,3cyclictest674-21lldpd07:50:123
236579962,3cyclictest658-21snmpd12:18:453
236579962,3cyclictest658-21snmpd11:35:533
236579962,3cyclictest658-21snmpd11:11:113
236579962,3cyclictest658-21snmpd11:02:523
236579962,3cyclictest658-21snmpd10:25:443
236579962,3cyclictest658-21snmpd10:25:443
236579962,3cyclictest658-21snmpd10:10:183
236579962,3cyclictest658-21snmpd10:03:033
236579962,3cyclictest658-21snmpd09:25:243
236579962,3cyclictest658-21snmpd09:23:063
236579962,3cyclictest658-21snmpd09:15:383
236579962,3cyclictest658-21snmpd08:46:033
236579962,3cyclictest658-21snmpd08:33:223
236579962,3cyclictest658-21snmpd08:16:193
236579962,3cyclictest658-21snmpd07:58:203
236579962,3cyclictest658-21snmpd07:41:373
236579962,3cyclictest658-21snmpd07:33:103
236579962,3cyclictest29776-21memory07:20:173
236579962,3cyclictest26918-21cat10:50:153
236579962,3cyclictest23348-21cat09:30:143
236579962,3cyclictest14882-21cat10:25:023
236579962,3cyclictest0-21swapper/308:25:313
236579962,2cyclictest275-21systemd-journal08:12:323
236579960,5cyclictest7159-21gpgv12:35:013
236579960,5cyclictest3252-21users09:55:223
236579960,5cyclictest24480-21hddtemp_smartct07:10:163
236579960,2cyclictest32735-21/usr/sbin/munin12:20:183
236539963,2cyclictest6732-21grep10:05:162
236539963,2cyclictest658-21snmpd12:04:142
236539963,2cyclictest658-21snmpd09:57:112
236539963,2cyclictest658-21snmpd09:06:472
236539963,2cyclictest6491-21sshd08:50:472
236539963,2cyclictest504-21dbus-daemon08:45:012
236539963,2cyclictest4976-11brltty08:07:472
236539963,2cyclictest24449-21grep10:45:152
236539962,3cyclictest658-21snmpd12:37:192
236539962,3cyclictest658-21snmpd12:24:522
236539962,3cyclictest658-21snmpd12:15:402
236539962,3cyclictest658-21snmpd10:58:522
236539962,3cyclictest658-21snmpd10:51:132
236539962,3cyclictest658-21snmpd10:40:192
236539962,3cyclictest658-21snmpd10:39:272
236539962,3cyclictest658-21snmpd10:00:032
236539962,3cyclictest658-21snmpd09:28:362
236539962,3cyclictest658-21snmpd08:30:082
236539962,3cyclictest658-21snmpd08:26:232
236539962,3cyclictest658-21snmpd07:30:252
236539962,3cyclictest658-21snmpd07:20:072
236539962,3cyclictest658-21snmpd07:10:022
236539962,3cyclictest5022-21expr12:30:162
236539962,3cyclictest3886-21cat07:35:142
236539962,3cyclictest275-21systemd-journal12:26:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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