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2026-08-23 - 18:44
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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 Sun Aug 23, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6782304275,19sleep20-21swapper/207:09:382
5572275240,22sleep10-21swapper/107:08:361
4972267237,19sleep00-21swapper/007:08:030
4282257225,21sleep30-21swapper/307:07:133
309602630,0sleep00-21swapper/010:50:140
26152580,0sleep20-21swapper/212:10:002
224152580,0sleep30-21swapper/312:01:563
17972570,0sleep20-21swapper/209:54:502
17132200,1sleep21695-21ssh11:30:162
68192190,0sleep00-21swapper/010:35:240
8642180,0sleep10-21swapper/110:32:171
265632180,0sleep30-21swapper/310:28:353
260592150,0sleep00-21swapper/010:28:110
198252150,0sleep00-21swapper/012:39:410
82399147,1cyclictest141rcu_preempt07:50:123
267192140,0sleep30-21swapper/312:24:223
84682100,0sleep20-21swapper/210:55:202
216032100,0sleep20-21swapper/209:46:412
8239997,2cyclictest34-21ksoftirqd/311:15:013
8179993,3cyclictest28822-21sleep08:10:001
22899290,2sleep334-21ksoftirqd/310:06:403
15430290,0sleep10-21swapper/109:24:131
8239986,2cyclictest34-21ksoftirqd/311:55:013
8199985,2cyclictest24685-21/usr/sbin/munin09:10:142
8199983,3cyclictest5863-21ls07:20:012
8129980,7cyclictest0-21swapper/009:29:370
32183280,0sleep30-21swapper/310:12:213
20954280,0sleep00-21swapper/010:44:450
15599280,0sleep10-21swapper/110:40:421
8993270,0sleep00-21swapper/010:55:420
8239976,1cyclictest34-21ksoftirqd/311:05:013
8239976,1cyclictest34-21ksoftirqd/311:00:013
8239973,3cyclictest26957-21ntpq11:45:193
8239973,3cyclictest14761-21smart_sda10:40:203
8199973,3cyclictest275-21systemd-journal11:10:032
8199972,2cyclictest21322-21sleep10:45:012
8179973,3cyclictest275-21systemd-journal09:48:131
8179973,3cyclictest275-21systemd-journal07:47:501
8179972,4cyclictest275-21systemd-journal08:39:231
8179972,3cyclictest275-21systemd-journal11:13:171
8129973,3cyclictest275-21systemd-journal09:15:330
8129972,3cyclictest275-21systemd-journal08:45:000
8129970,1cyclictest0-21swapper/009:35:300
4176270,0sleep30-21swapper/309:17:023
30327270,0sleep20-21swapper/211:47:262
8239964,1cyclictest34-21ksoftirqd/308:25:103
8239963,2cyclictest700-21sh11:30:113
8239963,2cyclictest504-21dbus-daemon09:30:003
8239963,2cyclictest504-21dbus-daemon07:35:013
8239963,2cyclictest4474-21sh09:55:283
8239963,2cyclictest30727-21snmpd10:17:573
8239963,2cyclictest30314-21ssh11:09:083
8239963,2cyclictest275-21systemd-journal07:58:163
8239963,2cyclictest17820-21sh10:04:113
8239963,2cyclictest17037-21rm12:37:343
8239963,2cyclictest16348-21ssh11:58:423
8239963,2cyclictest13239-21df_inode08:45:143
8239963,1cyclictest0-21swapper/312:10:573
8239963,1cyclictest0-21swapper/310:21:043
8239962,3cyclictest9356-21cat11:35:123
8239962,3cyclictest9356-21cat11:35:123
8239962,3cyclictest5739-21cat10:35:163
8239962,3cyclictest4134-21cat07:15:143
8239962,3cyclictest30727-21snmpd12:28:543
8239962,3cyclictest30727-21snmpd11:40:233
8239962,3cyclictest30727-21snmpd11:21:403
8239962,3cyclictest30727-21snmpd10:47:553
8239962,3cyclictest30727-21snmpd10:32:543
8239962,3cyclictest30727-21snmpd09:40:043
8239962,3cyclictest30727-21snmpd09:10:213
8239962,3cyclictest30727-21snmpd08:57:053
8239962,3cyclictest30727-21snmpd08:36:233
8239962,3cyclictest29687-21cat08:10:133
8239962,3cyclictest275-21systemd-journal07:24:053
8239962,3cyclictest25255-21ntpq08:00:173
8239962,3cyclictest23712-21cron09:10:003
8239962,3cyclictest11547-21expr12:15:133
8239962,1cyclictest141rcu_preempt07:25:123
8239962,1cyclictest0-21swapper/311:25:043
8239962,1cyclictest0-21swapper/311:18:353
8239962,1cyclictest0-21swapper/310:50:033
8239961,3cyclictest275-21systemd-journal09:00:123
8239960,1cyclictest141rcu_preempt12:30:133
8239960,1cyclictest141rcu_preempt09:20:113
8199966,0cyclictest0-21swapper/212:14:162
8199966,0cyclictest0-21swapper/210:09:182
8199966,0cyclictest0-21swapper/209:25:592
8199963,2cyclictest8004-21ssh11:15:142
8199963,2cyclictest674-21lldpd10:26:452
8199963,2cyclictest504-21dbus-daemon12:40:002
8199963,2cyclictest504-21dbus-daemon08:15:472
8199963,2cyclictest4777-21cat12:30:162
8199963,2cyclictest30727-21snmpd10:36:332
8199963,2cyclictest30727-21snmpd10:32:452
8199963,2cyclictest30727-21snmpd09:21:002
8199963,2cyclictest25576-21rm10:46:382
8199963,2cyclictest19245-21rm11:40:222
8199963,1cyclictest0-21swapper/210:10:162
8199963,1cyclictest0-21swapper/209:17:272
8199962,3cyclictest8743-21cat08:35:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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