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2026-07-26 - 14:58
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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 Jul 26, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
82222306280,17sleep20-21swapper/207:05:062
100172277245,21sleep10-21swapper/107:08:001
99412267240,17sleep30-21swapper/307:07:003
99172263233,19sleep00-21swapper/007:06:420
259872580,0sleep30-21swapper/310:02:483
19142570,0sleep20-21swapper/209:10:232
60252560,0sleep16028-21gltestperf10:10:131
256872550,0sleep10-21swapper/109:43:561
284992200,0sleep20-21swapper/210:42:232
192702200,0sleep20-21swapper/210:55:442
235582180,0sleep10-21swapper/108:50:011
234412180,1sleep323443-21grep11:55:183
22972180,0sleep30-21swapper/309:10:293
121612160,0sleep30-21swapper/310:32:543
297262150,0sleep10-21swapper/112:18:561
92932120,0chrt0-21swapper/011:28:360
220882120,0sleep20-21swapper/211:16:332
10301991210,1cyclictest22-21ksoftirqd/111:35:001
10301991210,1cyclictest22-21ksoftirqd/109:40:001
1030199120,3cyclictest22-21ksoftirqd/109:55:131
1030199119,1cyclictest12274-21turbostat.cron08:25:001
1030199109,1cyclictest22-21ksoftirqd/107:15:011
1030199107,2cyclictest22-21ksoftirqd/111:00:001
1030199101,2cyclictest141rcu_preempt08:35:121
27442290,3sleep334-21ksoftirqd/310:41:353
103039995,3cyclictest6009-21grep08:10:132
103019998,1cyclictest22-21ksoftirqd/109:10:001
103019998,1cyclictest22-21ksoftirqd/107:40:001
103019991,3cyclictest22-21ksoftirqd/111:20:121
24296280,0sleep30-21swapper/309:42:523
103069986,1cyclictest0-21swapper/311:23:493
103069985,2cyclictest658-21snmpd10:39:463
103019987,1cyclictest22-21ksoftirqd/112:40:001
103019987,1cyclictest22-21ksoftirqd/112:30:001
103019987,1cyclictest22-21ksoftirqd/111:20:021
103019987,1cyclictest22-21ksoftirqd/109:00:011
103019983,2cyclictest22-21ksoftirqd/111:45:121
103019982,4cyclictest22-21ksoftirqd/111:25:161
103019982,4cyclictest22-21ksoftirqd/109:16:491
103019980,7cyclictest4423-21df09:50:141
103019980,2cyclictest25501-21rm11:00:021
103069974,2cyclictest34-21ksoftirqd/307:45:003
103069974,2cyclictest275-21systemd-journal11:48:293
103069974,2cyclictest275-21systemd-journal11:20:003
103069973,3cyclictest3242-21ntpq09:30:183
103069973,3cyclictest275-21systemd-journal10:30:003
103069973,1cyclictest0-21swapper/311:43:383
103069972,3cyclictest275-21systemd-journal07:15:023
103039975,1cyclictest13674-21ssh10:52:522
103039974,2cyclictest504-21dbus-daemon10:40:002
103039973,3cyclictest3673-21df_inode11:25:142
103039972,4cyclictest51250irq/139-enp4s0-09:45:202
103039971,1cyclictest141rcu_preempt08:00:002
103019976,1cyclictest22-21ksoftirqd/111:55:001
103019976,1cyclictest22-21ksoftirqd/111:40:001
103019976,1cyclictest22-21ksoftirqd/109:50:011
103019976,1cyclictest22-21ksoftirqd/109:05:001
103019976,1cyclictest22-21ksoftirqd/107:50:131
103019974,2cyclictest22-21ksoftirqd/110:05:001
103019972,4cyclictest22296-21sshd10:39:071
103019972,1cyclictest141rcu_preempt11:10:151
103019972,1cyclictest141rcu_preempt11:10:141
103019971,3cyclictest275-21systemd-journal12:09:261
103019971,3cyclictest141rcu_preempt11:05:111
102969973,3cyclictest26251-21sshd07:41:290
102969972,3cyclictest6488-21basename10:30:010
102969972,3cyclictest275-21systemd-journal10:14:020
1026270,0sleep012-21ksoftirqd/009:48:220
103069966,0cyclictest0-21swapper/312:16:373
103069966,0cyclictest0-21swapper/308:17:013
103069964,2cyclictest34-21ksoftirqd/309:05:003
103069964,1cyclictest0-21swapper/308:10:123
103069963,2cyclictest9611-21ssh09:53:133
103069963,2cyclictest504-21dbus-daemon09:05:423
103069963,2cyclictest28722-21rm10:23:443
103069963,2cyclictest28555-21ssh09:45:163
103069963,2cyclictest23648-21ssh11:36:313
103069963,2cyclictest19531-21sh11:53:413
103069963,2cyclictest18849-21sshd11:34:283
103069963,2cyclictest18184-21expr07:25:143
103069963,2cyclictest15081-21ntpq10:15:183
103069963,2cyclictest10912-21systemd-udevd08:20:153
103069962,3cyclictest658-21snmpd12:01:063
103069962,3cyclictest658-21snmpd11:02:093
103069962,3cyclictest658-21snmpd10:45:523
103069962,3cyclictest658-21snmpd09:15:023
103069962,3cyclictest658-21snmpd07:31:373
103069962,3cyclictest28522-21cat07:45:183
103069962,3cyclictest275-21systemd-journal08:48:463
103069962,3cyclictest26196-21expr08:55:163
103069962,3cyclictest21291-21sh10:57:173
103069962,3cyclictest15545-21cat12:10:143
103069962,3cyclictest15532-21cat08:30:173
103069962,3cyclictest13732-21sensors_temp08:25:203
103069962,3cyclictest10654-21expr11:10:153
103069962,3cyclictest10654-21expr11:10:153
103069962,3cyclictest0-21swapper/312:29:513
103069962,3cyclictest0-21swapper/311:05:163
103069962,1cyclictest0-21swapper/312:35:173
103069962,1cyclictest0-21swapper/312:20:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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