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2026-07-04 - 23:04
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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 Sat Jul 04, 2026 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
163182284259,16sleep20-21swapper/207:08:402
162222273244,19sleep00-21swapper/007:07:260
144742273242,20sleep10-21swapper/107:05:091
163562265234,20sleep30-21swapper/307:09:103
255402670,0sleep20-21swapper/209:20:412
75752650,0sleep10-21swapper/109:10:151
94402620,0sleep30-21swapper/311:09:223
189042620,0sleep30-21swapper/310:35:183
62102600,0sleep30-21swapper/311:26:323
301082550,0sleep00-21swapper/010:41:480
298092510,0sleep20-21swapper/211:01:162
286492170,0sleep10-21swapper/110:40:411
216182170,0sleep20-21swapper/211:55:222
219522140,0sleep30-21swapper/310:17:283
67012130,0sleep20-21swapper/210:47:262
268642120,0sleep10-21swapper/111:20:011
25012110,0sleep00-21swapper/009:26:190
112412110,0sleep00-21swapper/009:12:220
1655799108,1cyclictest34-21ksoftirqd/309:25:003
165579994,3cyclictest275-21systemd-journal09:40:003
165529994,3cyclictest275-21systemd-journal09:39:582
165529990,2cyclictest5663-21ssh09:28:492
165579983,3cyclictest275-21systemd-journal10:00:023
165489982,3cyclictest27013-21munin-run11:40:011
165449980,2cyclictest32531-21sh11:03:290
15872280,0sleep10-21swapper/112:31:361
25618270,0sleep20-21swapper/212:37:502
23031270,0sleep30-21swapper/307:20:183
21401270,0sleep10-21swapper/110:17:021
165579973,3cyclictest868-21head09:45:153
165579973,3cyclictest868-21head09:45:153
165579973,3cyclictest658-21snmpd11:34:053
165579973,3cyclictest29017-21cat11:40:203
165579973,3cyclictest29017-21cat11:40:193
165579973,3cyclictest2282-21wc11:05:013
165579973,2cyclictest275-21systemd-journal11:20:533
165579973,1cyclictest0-21swapper/310:49:003
165529973,3cyclictest658-21snmpd09:01:342
165529973,3cyclictest275-21systemd-journal11:15:012
165529972,2cyclictest28256-21basename07:35:012
165529972,1cyclictest0-21swapper/209:10:122
165529970,6cyclictest11563-21diskstats11:30:132
165489976,1cyclictest22-21ksoftirqd/109:00:001
165489974,2cyclictest504-21dbus-daemon11:15:011
165489973,3cyclictest275-21systemd-journal12:10:431
165489973,3cyclictest275-21systemd-journal11:41:441
165489973,3cyclictest275-21systemd-journal11:41:441
165489970,5cyclictest275-21systemd-journal09:21:431
165449974,2cyclictest504-21dbus-daemon12:10:560
165449974,2cyclictest18138-21cron10:55:010
165449973,3cyclictest24459-21diskstats07:25:140
165449973,1cyclictest0-21swapper/009:46:270
165449973,1cyclictest0-21swapper/009:46:270
15255270,0sleep20-21swapper/212:11:262
12673270,0sleep20-21swapper/208:10:142
23877260,1sleep20-21swapper/208:35:122
165579966,0cyclictest0-21swapper/311:11:143
165579966,0cyclictest0-21swapper/309:15:013
165579963,2cyclictest9017-21which09:30:183
165579963,2cyclictest658-21snmpd11:48:473
165579963,2cyclictest658-21snmpd09:02:113
165579963,2cyclictest5644-21sh09:28:483
165579963,2cyclictest3242-21grep10:25:233
165579963,2cyclictest275-21systemd-journal10:05:013
165579963,2cyclictest2637-21sshd07:46:443
165579963,2cyclictest2637-21sshd07:46:443
165579963,2cyclictest25409-21grep09:40:153
165579963,2cyclictest15438-21mailstats08:15:183
165579963,2cyclictest13785-21awk12:30:173
165579963,2cyclictest12144-21ssh11:50:133
165579963,2cyclictest11816-21ssh12:10:003
165579963,1cyclictest0-21swapper/312:29:173
165579963,1cyclictest0-21swapper/311:17:223
165579962,3cyclictest658-21snmpd12:36:483
165579962,3cyclictest658-21snmpd12:21:213
165579962,3cyclictest658-21snmpd10:55:183
165579962,3cyclictest658-21snmpd10:31:033
165579962,3cyclictest658-21snmpd09:51:053
165579962,3cyclictest658-21snmpd09:10:143
165579962,3cyclictest658-21snmpd08:58:263
165579962,3cyclictest658-21snmpd07:57:093
165579962,3cyclictest504-21dbus-daemon12:00:013
165579962,3cyclictest504-21dbus-daemon09:06:003
165579962,3cyclictest30613-21sshd12:00:563
165579962,3cyclictest27669-21cat07:30:203
165579962,3cyclictest27537-21ntpq10:40:183
165579962,3cyclictest275-21systemd-journal08:45:553
165579962,3cyclictest275-21systemd-journal07:36:333
165579962,3cyclictest275-21systemd-journal07:15:003
165579962,3cyclictest24731-21cat07:25:163
165579962,3cyclictest22002-21uptime12:15:203
165579962,3cyclictest17214-21cat08:20:173
165579962,3cyclictest11096-21head10:50:143
165579962,3cyclictest10531-21cat08:05:153
165579962,1cyclictest0-21swapper/312:05:123
165579961,4cyclictest0-21swapper/310:10:163
165579960,6cyclictest0-21swapper/310:24:423
165579960,6cyclictest0-21swapper/309:57:383
165579960,5cyclictest23662-21grep08:35:123
165579960,1cyclictest141rcu_preempt07:15:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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