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2025-12-15 - 03:15
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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 15, 2025 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21172310285,16sleep20-21swapper/219:07:152
21712298270,19sleep10-21swapper/119:07:461
19932268235,20sleep00-21swapper/019:05:440
19692255223,21sleep30-21swapper/319:05:263
183712620,0sleep20-21swapper/223:15:162
183712620,0sleep20-21swapper/223:15:162
206312520,1sleep220632-21unixbench_singl20:55:212
203202190,0sleep30-21swapper/322:10:023
147522170,0sleep00-21swapper/023:05:200
251932110,0sleep30-21swapper/322:20:153
24835280,1sleep20-21swapper/219:55:182
24459982,1cyclictest24566-21sendmail22:20:001
24559973,3cyclictest658-21snmpd19:42:293
24559973,3cyclictest275-21systemd-journal21:50:003
24559972,4cyclictest504-11dbus-daemon22:50:403
24559972,3cyclictest275-21systemd-journal22:45:013
24559971,5cyclictest0-21swapper/319:30:133
24519974,2cyclictest16973-21cron19:40:002
24519973,3cyclictest13356-21/usr/sbin/munin21:55:172
24519972,3cyclictest504-21dbus-daemon21:40:002
24459973,3cyclictest275-21systemd-journal22:10:001
24459972,3cyclictest21076-21ls00:35:001
24459970,1cyclictest0-21swapper/121:35:011
24409975,2cyclictest12-21ksoftirqd/023:25:000
24409975,1cyclictest1987-21df_inode22:40:150
24409974,2cyclictest275-21systemd-journal20:55:350
24409973,3cyclictest658-21snmpd21:41:290
24409973,3cyclictest658-21snmpd21:15:430
24409971,5cyclictest14247-21tail21:55:170
24559964,1cyclictest7111-21df_inode21:40:133
24559963,2cyclictest31777-21users21:20:203
24559963,2cyclictest275-21systemd-journal19:22:223
24559963,2cyclictest27089-21ntpq20:00:163
24559963,2cyclictest16281-21taskset00:20:593
24559963,2cyclictest15339-21run-parts22:00:013
24559962,3cyclictest9347-11brltty20:59:403
24559962,3cyclictest658-21snmpd22:55:483
24559962,3cyclictest658-21snmpd22:32:343
24559962,3cyclictest658-21snmpd22:26:493
24559962,3cyclictest658-21snmpd22:04:063
24559962,3cyclictest658-21snmpd21:52:383
24559962,3cyclictest658-21snmpd21:35:043
24559962,3cyclictest658-21snmpd21:30:483
24559962,3cyclictest658-21snmpd21:18:153
24559962,3cyclictest658-21snmpd21:07:043
24559962,3cyclictest658-21snmpd20:17:203
24559962,3cyclictest658-21snmpd20:08:133
24559962,3cyclictest658-21snmpd19:56:353
24559962,3cyclictest658-21snmpd00:11:233
24559962,3cyclictest658-21snmpd00:02:323
24559962,3cyclictest5734-21cat20:25:143
24559962,3cyclictest504-21dbus-daemon22:10:013
24559962,3cyclictest504-21dbus-daemon20:55:013
24559962,3cyclictest31493-21expr23:45:143
24559962,3cyclictest28904-21cut23:40:023
24559962,3cyclictest275-21systemd-journal23:17:373
24559962,3cyclictest275-21systemd-journal23:17:373
24559962,3cyclictest275-21systemd-journal20:21:593
24559962,3cyclictest275-21systemd-journal19:25:173
24559962,3cyclictest275-21systemd-journal19:10:023
24559962,3cyclictest25694-21smart_sda23:30:203
24559962,3cyclictest16231-21cat23:10:163
24559962,3cyclictest1606-21apt-get22:40:123
24559962,3cyclictest12325-21cat00:15:123
24559961,4cyclictest21334-21apt-get00:35:163
24559960,5cyclictest25748-21/usr/sbin/munin21:10:153
24559960,5cyclictest23643-21cron19:55:013
24519963,2cyclictest658-21snmpd22:09:002
24519963,2cyclictest504-21dbus-daemon20:35:292
24519963,2cyclictest28-21ksoftirqd/221:25:002
24519963,2cyclictest27985-21taskset20:03:332
24519963,2cyclictest275-21systemd-journal23:52:302
24519963,2cyclictest275-21systemd-journal22:37:442
24519963,2cyclictest275-21systemd-journal22:29:552
24519963,2cyclictest275-21systemd-journal20:06:132
24519962,3cyclictest658-21snmpd23:40:042
24519962,3cyclictest658-21snmpd23:03:552
24519962,3cyclictest658-21snmpd22:56:102
24519962,3cyclictest658-21snmpd22:49:092
24519962,3cyclictest658-21snmpd22:20:212
24519962,3cyclictest658-21snmpd22:02:062
24519962,3cyclictest658-21snmpd21:52:242
24519962,3cyclictest658-21snmpd20:43:332
24519962,3cyclictest658-21snmpd20:29:332
24519962,3cyclictest658-21snmpd20:14:202
24519962,3cyclictest658-21snmpd19:23:402
24519962,3cyclictest658-21snmpd00:34:512
24519962,3cyclictest658-21snmpd00:25:272
24519962,3cyclictest658-21snmpd00:10:332
24519962,3cyclictest23357-21cat22:15:182
24519962,3cyclictest13126-21cat19:30:142
24519962,3cyclictest10062-21find19:25:022
24519961,3cyclictest275-21systemd-journal21:05:292
24519961,2cyclictest28-21ksoftirqd/219:50:142
24519960,6cyclictest0-21swapper/223:35:182
24519960,5cyclictest2309-21wc20:15:192
24519960,1cyclictest275-21systemd-journal00:20:012
24519960,0cyclictest0-21swapper/219:40:162
24459963,2cyclictest658-21snmpd19:47:431
24459963,2cyclictest504-21dbus-daemon20:20:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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