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2026-07-30 - 21:38
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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 Thu Jul 30, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
192202305275,20sleep20-21swapper/207:09:202
191852273246,18sleep10-21swapper/107:08:551
190982266212,18sleep00-21swapper/007:07:500
191772253220,22sleep30-21swapper/307:08:493
289802640,0sleep20-21swapper/211:37:032
306422620,0sleep10-21swapper/110:20:141
190402620,0sleep10-21swapper/109:34:281
226142610,0sleep30-21swapper/312:31:493
309562560,0sleep10-21swapper/112:36:531
272412530,0sleep10-21swapper/109:19:591
263812210,0sleep10-21swapper/110:37:041
137922210,0sleep30-21swapper/312:26:253
59122150,0sleep10-21swapper/109:45:231
86772130,0chrt0-21swapper/209:27:492
310542130,0sleep20-21swapper/212:36:582
167192130,0sleep30-21swapper/310:11:363
19411991212,0cyclictest24248-21lspci08:27:303
152682120,0sleep30-21swapper/309:31:313
24911290,0sleep00-21swapper/011:54:470
194069990,7cyclictest28-21ksoftirqd/211:15:122
194029998,1cyclictest22-21ksoftirqd/109:09:591
194029997,2cyclictest22-21ksoftirqd/110:30:011
194029997,1cyclictest10966-21sh09:10:021
194069985,2cyclictest28-21ksoftirqd/210:05:012
194029983,4cyclictest31114-21grep10:40:131
194029982,3cyclictest29439-21munin-run08:40:001
194029980,7cyclictest25273-21grep08:30:131
193979983,3cyclictest275-21systemd-journal07:52:130
9840270,0sleep20-21swapper/211:45:132
32723270,0chrt0-21swapper/311:59:263
194119974,2cyclictest658-21snmpd09:26:553
194119973,4cyclictest22158-21kworker/3:209:59:593
194119973,3cyclictest658-21snmpd09:03:263
194119973,3cyclictest3413-21ntpq12:20:163
194119973,3cyclictest20712-11brltty12:04:013
194119972,5cyclictest22158-21kworker/3:211:06:353
194119972,3cyclictest275-21systemd-journal11:51:113
194119972,3cyclictest275-21systemd-journal09:40:413
194119970,3cyclictest275-21systemd-journal11:25:303
194069975,2cyclictest28-21ksoftirqd/211:00:012
194069974,2cyclictest560-21gdbus12:10:012
194069973,3cyclictest658-21snmpd07:25:592
194069973,3cyclictest527-21gdbus08:27:532
194069973,3cyclictest504-21dbus-daemon09:22:222
194069973,3cyclictest28654-11brltty07:41:172
194069973,3cyclictest275-21systemd-journal10:18:122
194069973,3cyclictest17448-21apt-get08:15:122
194069972,2cyclictest20712-11brltty11:51:562
194069971,5cyclictest0-21swapper/211:10:012
194069971,1cyclictest141rcu_preempt11:20:092
194069970,5cyclictest141rcu_preempt09:54:592
194029976,1cyclictest22-21ksoftirqd/112:35:011
194029976,1cyclictest22-21ksoftirqd/108:27:291
194029973,3cyclictest658-21snmpd12:11:591
194029973,1cyclictest25226-21perf11:55:011
194029972,3cyclictest275-21systemd-journal10:00:031
193979973,3cyclictest658-21snmpd11:27:260
193979973,3cyclictest504-21dbus-daemon11:20:160
193979973,3cyclictest275-21systemd-journal09:14:110
193979973,3cyclictest19322-21diskstats12:30:130
193979972,4cyclictest504-11dbus-daemon09:36:570
193979972,2cyclictest275-21systemd-journal08:27:420
193979970,6cyclictest9344-21smartctl09:05:130
13343270,0sleep10-21swapper/112:06:411
30865260,0sleep00-21swapper/009:21:220
194119964,1cyclictest21289-21ntp_states09:35:163
194119963,2cyclictest951-21ntpq11:20:163
194119963,2cyclictest791-21ssh10:21:303
194119963,2cyclictest663-21runrttasks07:46:483
194119963,2cyclictest658-21snmpd12:06:153
194119963,2cyclictest658-21snmpd08:36:593
194119963,2cyclictest658-21snmpd07:24:093
194119963,2cyclictest5431-21ntpq09:45:203
194119963,2cyclictest31032-21sh10:00:183
194119963,2cyclictest275-21systemd-journal11:35:013
194119963,2cyclictest275-21systemd-journal08:05:043
194119963,2cyclictest18566-21sh09:14:413
194119963,2cyclictest18167-21rm09:53:193
194119963,2cyclictest17200-21sh10:31:233
194119963,1cyclictest0-21swapper/311:45:363
194119962,4cyclictest22158-21kworker/3:210:54:513
194119962,3cyclictest658-21snmpd12:36:293
194119962,3cyclictest658-21snmpd12:13:033
194119962,3cyclictest658-21snmpd11:35:043
194119962,3cyclictest658-21snmpd10:58:153
194119962,3cyclictest658-21snmpd08:40:313
194119962,3cyclictest658-21snmpd07:39:163
194119962,3cyclictest6198-21cat10:25:123
194119962,3cyclictest4474-21cat08:55:133
194119962,3cyclictest30926-21ls10:40:103
194119962,3cyclictest30157-21cut07:30:183
194119962,3cyclictest2716-21cat08:50:163
194119962,3cyclictest26259-21sed08:30:193
194119962,3cyclictest22664-21ls10:35:133
194119962,3cyclictest11743-21ntpq08:00:163
194119962,2cyclictest275-21systemd-journal12:15:063
194119962,1cyclictest0-21swapper/310:46:153
194119962,1cyclictest0-21swapper/309:21:023
194119961,5cyclictest22158-21kworker/3:210:08:073
194119960,6cyclictest0-21swapper/311:41:473
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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