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2026-05-15 - 15:29
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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 Fri May 15, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
171762290258,21sleep20-21swapper/207:08:042
173092277247,20sleep10-21swapper/107:09:321
172932277246,21sleep00-21swapper/007:09:190
170412270240,20sleep30-21swapper/307:06:203
70862570,0sleep30-21swapper/310:46:523
276062570,0sleep10-21swapper/111:19:091
189072550,0sleep30-21swapper/310:35:103
142632550,0sleep00-21swapper/010:12:290
55962540,0sleep20-21swapper/211:25:152
19942540,0sleep10-21swapper/110:05:131
28812510,0sleep00-21swapper/009:26:190
249902190,0sleep20-21swapper/209:20:172
321342170,0sleep10-21swapper/109:44:511
143542120,0sleep30-21swapper/309:53:223
174509991,4cyclictest275-21systemd-journal07:25:011
25803280,0sleep00-21swapper/009:40:170
174559986,1cyclictest0-21swapper/212:00:192
174559980,7cyclictest17438-21sh10:14:572
174469980,7cyclictest4674-21ssh12:04:170
16428280,0sleep30-21swapper/311:11:583
174579976,1cyclictest34-21ksoftirqd/308:40:013
174579974,2cyclictest504-21dbus-daemon10:02:003
174579973,3cyclictest4050-21awk10:25:193
174579973,3cyclictest32271-11brltty12:01:443
174559975,1cyclictest28-21ksoftirqd/207:20:012
174559973,3cyclictest30329-21sshd08:47:432
174559973,2cyclictest275-21systemd-journal07:54:442
174509975,1cyclictest22-21ksoftirqd/107:40:011
174509975,1cyclictest18718-21ssh12:12:291
174509973,3cyclictest658-21snmpd11:22:171
174509973,3cyclictest658-21snmpd07:57:171
174509973,3cyclictest12214-21sshd11:49:071
174509971,4cyclictest674-21lldpd09:34:481
174509970,4cyclictest23552-21munin-run09:20:001
174509970,1cyclictest0-21swapper/112:22:061
174469974,2cyclictest275-21systemd-journal09:03:430
174469973,3cyclictest658-21snmpd08:13:260
174579966,0cyclictest0-21swapper/309:31:533
174579963,2cyclictest658-21snmpd07:52:563
174579963,2cyclictest5779-21rm09:48:093
174579963,2cyclictest504-21dbus-daemon09:20:383
174579963,2cyclictest29913-21ssh10:21:353
174579963,2cyclictest275-21systemd-journal08:58:563
174579963,2cyclictest275-21systemd-journal08:28:523
174579963,2cyclictest27390-21ssh12:37:253
174579963,2cyclictest25869-21rm10:19:513
174579963,2cyclictest21873-21/usr/sbin/munin08:30:153
174579963,2cyclictest2048-21ssh10:44:353
174579963,2cyclictest1973-21ssh11:22:593
174579963,2cyclictest19261-21sh10:54:533
174579963,2cyclictest19108-21ssh09:55:383
174579963,2cyclictest1489-21ssh11:42:083
174579963,2cyclictest13830-21ssh12:10:003
174579963,2cyclictest13379-21cron11:50:003
174579963,2cyclictest0-21swapper/309:35:433
174579962,3cyclictest6681-21expr07:55:133
174579962,3cyclictest658-21snmpd12:26:013
174579962,3cyclictest658-21snmpd12:23:433
174579962,3cyclictest658-21snmpd10:55:413
174579962,3cyclictest658-21snmpd10:07:243
174579962,3cyclictest658-21snmpd09:27:253
174579962,3cyclictest658-21snmpd09:18:583
174579962,3cyclictest658-21snmpd07:10:333
174579962,3cyclictest4625-21expr11:05:123
174579962,3cyclictest28880-21cat11:00:153
174579962,3cyclictest275-21systemd-journal12:15:003
174579962,3cyclictest275-21systemd-journal07:40:013
174579962,3cyclictest275-21systemd-journal07:30:003
174579962,3cyclictest13297-21basename11:30:113
174579962,3cyclictest0-21swapper/310:11:343
174579962,1cyclictest0-21swapper/311:35:123
174579961,3cyclictest275-21systemd-journal09:05:133
174579960,6cyclictest0-21swapper/312:31:353
174579960,5cyclictest22033-21/usr/sbin/munin11:55:143
174579960,5cyclictest10947-21cpuspeed_turbos08:05:123
174579960,2cyclictest4381-21awk09:00:203
174579960,2cyclictest26337-21/usr/sbin/munin08:40:173
174579960,0cyclictest0-21swapper/309:11:403
174559966,0cyclictest0-21swapper/211:01:512
174559966,0cyclictest0-21swapper/209:36:192
174559964,2cyclictest18453-21cron10:35:012
174559964,1cyclictest4025-21ssh10:45:142
174559964,1cyclictest29169-21sh07:35:002
174559963,2cyclictest9734-21rm10:29:422
174559963,2cyclictest9248-21rm11:07:502
174559963,2cyclictest663-21runrttasks10:15:052
174559963,2cyclictest6629-21ssh10:07:592
174559963,2cyclictest658-21snmpd12:20:162
174559963,2cyclictest658-21snmpd09:01:042
174559963,2cyclictest658-21snmpd07:35:132
174559963,2cyclictest25822-21ssh12:16:402
174559963,2cyclictest2421-21ssh11:42:522
174559963,2cyclictest19416-21sshd07:12:442
174559963,2cyclictest19171-21ssh12:32:262
174559963,2cyclictest10141-21sshd08:00:432
174559962,3cyclictest6816-21cat12:05:152
174559962,3cyclictest658-21snmpd11:54:182
174559962,3cyclictest658-21snmpd10:58:112
174559962,3cyclictest658-21snmpd09:58:152
174559962,3cyclictest658-21snmpd09:26:462
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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