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2026-09-23 - 21:02
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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 Wed Sep 23, 2026 12:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
258372291230,19sleep10-21swapper/107:09:281
258432289227,19sleep20-21swapper/207:09:332
258612272242,19sleep00-21swapper/007:09:470
255992268234,23sleep30-21swapper/307:06:413
150892590,0sleep10-21swapper/110:27:361
127512590,0sleep20-21swapper/211:45:172
134462570,0sleep00-21swapper/010:26:190
180392560,0sleep00-21swapper/012:08:250
148422560,0sleep00-21swapper/011:46:260
246402540,0sleep20-21swapper/209:15:122
246402540,0sleep20-21swapper/209:15:122
12082400,0sleep20-21swapper/212:37:102
155902190,0sleep10-21swapper/109:48:521
116252180,0sleep00-21swapper/009:00:000
73092150,0sleep20-21swapper/211:22:222
312342150,1sleep10-21swapper/110:17:461
21212150,0sleep10-21swapper/112:18:111
183742150,1sleep318369-21ssh10:10:163
276652140,0sleep20-21swapper/210:35:142
183372140,0sleep20-21swapper/210:30:002
398280,0sleep30-21swapper/309:20:093
259909984,2cyclictest275-21systemd-journal08:08:033
259909981,5cyclictest141rcu_preempt09:30:193
259909980,7cyclictest21911-21ssh10:50:423
259819983,3cyclictest20115-21munin-run12:10:001
259819982,3cyclictest25924-21awk10:55:001
259819980,7cyclictest19586-21ssh09:50:331
259779984,3cyclictest275-21systemd-journal09:59:550
259779983,3cyclictest275-21systemd-journal07:22:530
259779983,3cyclictest275-21systemd-journal07:22:530
15497280,0sleep00-21swapper/011:07:500
4366270,0sleep20-21swapper/210:20:392
259909974,2cyclictest14917-21snmpd11:58:283
259909973,3cyclictest275-21systemd-journal11:25:003
259909972,3cyclictest275-21systemd-journal11:15:013
259909972,3cyclictest275-21systemd-journal11:15:013
259909970,1cyclictest0-21swapper/311:16:583
259859973,3cyclictest504-21dbus-daemon07:27:062
259859973,3cyclictest23316-21latency_hist08:15:002
259859973,3cyclictest21132-21date08:10:002
259859973,3cyclictest14917-21snmpd08:52:102
259859973,1cyclictest0-21swapper/209:27:542
259859970,6cyclictest31580-11brltty12:16:172
259819974,2cyclictest9416-21cron10:09:551
259819974,2cyclictest504-21dbus-daemon11:57:521
259819974,2cyclictest31085-21ntpq08:30:191
259779974,2cyclictest26578-21df07:10:130
259779974,2cyclictest2103-21diskstats10:00:150
259779973,3cyclictest20045-21grep11:50:160
259779973,3cyclictest14133-21expr09:05:130
259779973,3cyclictest1-21systemd09:51:570
18886270,0sleep00-21swapper/010:30:070
17187270,1sleep20-21swapper/209:50:012
259909966,0cyclictest0-21swapper/312:38:563
259909966,0cyclictest0-21swapper/312:21:583
259909966,0cyclictest0-21swapper/312:17:393
259909966,0cyclictest0-21swapper/311:50:213
259909966,0cyclictest0-21swapper/309:11:493
259909963,2cyclictest26406-21cat07:10:133
259909963,2cyclictest25414-21sh12:12:293
259909963,2cyclictest15474-21ssh12:06:253
259909963,2cyclictest14917-21snmpd11:43:263
259909963,1cyclictest0-21swapper/309:38:413
259909962,3cyclictest4341-21expr12:00:143
259909962,3cyclictest28145-21seq10:15:213
259909962,3cyclictest275-21systemd-journal10:28:383
259909962,3cyclictest26354-21cat08:20:133
259909962,3cyclictest24857-21sed08:15:203
259909962,3cyclictest14917-21snmpd12:25:573
259909962,3cyclictest14917-21snmpd11:46:363
259909962,3cyclictest14917-21snmpd11:29:143
259909962,3cyclictest14917-21snmpd10:36:223
259909962,3cyclictest14917-21snmpd10:05:073
259909962,3cyclictest14917-21snmpd10:01:013
259909962,3cyclictest14917-21snmpd09:42:133
259909962,3cyclictest14917-21snmpd08:52:493
259909962,3cyclictest14917-21snmpd08:28:083
259909962,3cyclictest14917-21snmpd07:47:353
259909962,3cyclictest14917-21snmpd07:35:213
259909962,3cyclictest14917-21snmpd07:15:553
259909962,3cyclictest14495-21hddtemp_smartct09:05:153
259909962,3cyclictest1-21systemd09:00:073
259909962,1cyclictest0-21swapper/311:35:123
259909962,1cyclictest0-21swapper/311:01:133
259909962,1cyclictest0-21swapper/310:22:033
259909962,1cyclictest0-21swapper/309:50:433
259909962,1cyclictest0-21swapper/309:15:013
259909962,1cyclictest0-21swapper/309:15:003
259909961,4cyclictest8734-11brltty07:32:563
259909961,4cyclictest30402-21expr08:30:143
259909961,4cyclictest14974-21seq09:28:473
259909960,6cyclictest0-21swapper/309:55:153
259909960,6cyclictest0-21swapper/309:45:083
259909960,5cyclictest5167-21ssh10:40:323
259909960,5cyclictest23020-21sed12:30:233
259909960,5cyclictest21186-21/usr/sbin/munin08:10:163
259909960,3cyclictest21778-21rm11:30:473
259909960,0cyclictest0-21swapper/310:55:593
259859964,1cyclictest15875-21diskmemload12:22:552
259859963,2cyclictest5404-21awk12:00:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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