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2026-08-28 - 20:57
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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 Aug 28, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
309942308279,19sleep20-21swapper/207:08:242
308642270243,17sleep30-21swapper/307:06:443
309252268237,21sleep10-21swapper/107:07:311
310902265234,21sleep00-21swapper/007:09:230
115912650,0sleep30-21swapper/309:23:143
161162610,2sleep228-21ksoftirqd/212:20:002
142692580,0sleep30-21swapper/312:18:413
42172570,0sleep00-21swapper/011:53:190
149752570,0sleep20-21swapper/211:01:242
54932560,0sleep30-21swapper/310:17:093
37812560,0sleep00-21swapper/012:12:050
103662540,0sleep10-21swapper/112:35:131
40712530,0sleep30-21swapper/309:38:083
52332520,0sleep20-21swapper/212:13:122
119542220,0sleep00-21swapper/011:19:320
141092180,0sleep20-21swapper/210:22:202
130832180,0sleep30-21swapper/311:20:113
48672170,0sleep10-21swapper/109:19:281
138542160,0sleep00-21swapper/012:18:220
75672150,0sleep20-21swapper/210:18:442
46372140,0sleep30-21swapper/308:30:173
245062140,0sleep20-21swapper/210:09:472
31249991210,1cyclictest28751-21apt08:15:001
142062110,0sleep3331rcuc/312:37:233
50112100,0sleep10-21swapper/112:32:041
49442100,0sleep10-21swapper/111:34:471
312479996,2cyclictest12-21ksoftirqd/007:20:010
312549984,3cyclictest304-21systemd-udevd07:30:202
312549983,3cyclictest8945-21munin-run12:35:002
312549982,3cyclictest1-21systemd12:00:002
312549982,3cyclictest10018-21dump-pmu-power08:45:012
312549980,5cyclictest25931-21munin-run10:30:012
312499983,3cyclictest1830-21munin-run10:35:011
312499981,4cyclictest13165-21sendmail07:40:001
312479985,2cyclictest12-21ksoftirqd/008:30:010
312479982,1cyclictest954-21apt-get12:30:110
19966280,0sleep00-21swapper/011:24:170
32093270,0sleep10-21swapper/109:35:131
312579973,3cyclictest30727-21snmpd10:59:533
312579973,3cyclictest30727-21snmpd08:25:213
312579973,3cyclictest275-21systemd-journal12:06:103
312549974,2cyclictest275-21systemd-journal09:10:282
312549973,3cyclictest674-21lldpd12:05:162
312549973,3cyclictest504-21dbus-daemon10:40:012
312549973,3cyclictest275-21systemd-journal08:35:012
312549973,3cyclictest13400-21ntpq08:50:172
312549971,3cyclictest30618-21idleruntime-cro09:35:002
312549970,7cyclictest9813-21ssh09:21:522
312499973,3cyclictest5491-21sshd11:54:181
312499973,3cyclictest30727-21snmpd08:55:341
312479973,3cyclictest30727-21snmpd12:24:400
312479973,3cyclictest30727-21snmpd12:03:490
312479973,3cyclictest30727-21snmpd09:02:430
312479973,3cyclictest275-21systemd-journal11:59:210
312479971,3cyclictest22061-21turbostat11:45:000
312479970,7cyclictest6723-21sh10:37:260
12165270,0chrt0-21swapper/111:19:411
312579963,2cyclictest504-21dbus-daemon09:31:193
312579963,2cyclictest30096-21sh10:50:593
312579963,2cyclictest28210-21ssh10:11:133
312579963,2cyclictest275-21systemd-journal11:14:133
312579963,2cyclictest26773-21df10:30:123
312579963,2cyclictest2628-21rm09:56:003
312579963,2cyclictest21096-21ssh10:26:203
312579963,2cyclictest0-21swapper/312:33:173
312579963,2cyclictest0-21swapper/311:03:283
312579963,1cyclictest0-21swapper/311:09:213
312579962,3cyclictest8402-21ls09:40:183
312579962,3cyclictest7964-21wc08:40:003
312579962,3cyclictest31535-21cat07:10:113
312579962,3cyclictest30727-21snmpd12:21:163
312579962,3cyclictest30727-21snmpd12:01:313
312579962,3cyclictest30727-21snmpd11:25:333
312579962,3cyclictest30727-21snmpd10:45:593
312579962,3cyclictest30727-21snmpd10:00:043
312579962,3cyclictest30727-21snmpd09:49:363
312579962,3cyclictest30727-21snmpd09:25:203
312579962,3cyclictest30727-21snmpd09:02:043
312579962,3cyclictest30727-21snmpd08:59:073
312579962,3cyclictest30727-21snmpd08:16:453
312579962,3cyclictest30727-21snmpd08:10:513
312579962,3cyclictest30727-21snmpd08:00:113
312579962,3cyclictest30727-21snmpd07:56:503
312579962,3cyclictest30727-21snmpd07:26:023
312579962,3cyclictest30727-21snmpd07:18:563
312579962,3cyclictest22631-21cat09:10:153
312579962,3cyclictest14099-21cat07:40:143
312579962,1cyclictest0-21swapper/311:59:003
312579962,1cyclictest0-21swapper/311:52:453
312579960,6cyclictest0-21swapper/310:41:533
312579960,5cyclictest30563-21diskstats09:15:133
312579960,5cyclictest14308-21cstates11:40:113
312579960,0cyclictest0-21swapper/311:30:143
312549964,1cyclictest17941-21smart_sda12:20:192
312549963,2cyclictest914-21sh09:35:432
312549963,2cyclictest663-21runrttasks08:18:592
312549963,2cyclictest51250irq/139-enp4s0-09:40:162
312549963,2cyclictest4621-21ssh11:15:062
312549963,2cyclictest30727-21snmpd10:45:352
312549963,2cyclictest275-21systemd-journal08:14:552
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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