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2026-08-27 - 18:10
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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 Aug 27, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
123742274213,50sleep00-21swapper/007:06:380
125372272240,21sleep20-21swapper/207:08:452
125562267235,21sleep10-21swapper/107:09:001
126212265235,20sleep30-21swapper/307:09:513
171702660,0sleep20-21swapper/211:15:022
92302620,0sleep00-21swapper/009:33:570
140242620,0sleep20-21swapper/212:10:162
89272600,0sleep00-21swapper/011:10:110
267632570,0sleep30-21swapper/312:36:513
14332570,1sleep122-21ksoftirqd/112:21:591
86242560,0sleep20-21swapper/211:48:012
87192550,0sleep30-21swapper/311:48:053
203252550,0sleep00-21swapper/008:35:110
183692550,0sleep20-21swapper/209:39:192
255722540,0sleep20-21swapper/211:00:162
144992480,0sleep20-21swapper/211:32:122
295982230,0sleep30-21swapper/309:26:073
307712190,0sleep20-21swapper/211:41:412
304802180,0sleep10-21swapper/112:39:421
286672180,0sleep00-21swapper/010:04:560
144842180,0sleep10-21swapper/107:10:201
141662180,0sleep20-21swapper/209:15:332
91122170,0sleep20-21swapper/212:26:252
120542150,0sleep20-21swapper/211:11:222
257732130,0sleep00-21swapper/010:40:520
248312130,0sleep20-21swapper/210:21:082
1274099108,1cyclictest12-21ksoftirqd/009:45:010
1274099100,1cyclictest6159-21munin-run08:05:010
127409993,1cyclictest141rcu_preempt07:25:130
8902280,0sleep10-21swapper/109:52:371
6823280,0sleep30-21swapper/311:08:463
27708280,0sleep20-21swapper/212:37:342
127529985,2cyclictest13587-21ssh11:12:303
127449985,2cyclictest29363-21dump-pmu-power07:45:011
127449984,3cyclictest30727-21snmpd10:55:251
127409987,1cyclictest12-21ksoftirqd/009:25:000
127409983,3cyclictest29921-21munin-run10:25:010
127409981,4cyclictest1698-21basename07:55:010
20553270,0sleep10-21swapper/111:35:231
18923270,0sleep30-21swapper/310:56:093
127529976,1cyclictest11191-21sed11:30:163
127529973,3cyclictest22529-21cron12:35:003
127529973,1cyclictest0-21swapper/312:06:423
127489975,2cyclictest28-21ksoftirqd/207:40:012
127489974,2cyclictest504-21dbus-daemon11:39:062
127489973,3cyclictest29401-21readlink12:20:002
127489973,3cyclictest0-21swapper/211:25:532
127489973,2cyclictest275-21systemd-journal10:00:212
127489972,3cyclictest275-21systemd-journal07:25:112
127489970,4cyclictest7257-21awk10:50:012
127489970,1cyclictest0-21swapper/209:48:282
127449974,2cyclictest504-21dbus-daemon07:20:011
127449974,2cyclictest31236-21sh09:00:011
127449974,2cyclictest275-21systemd-journal07:52:231
127449973,4cyclictest5864-21kworker/1:008:04:471
127449973,4cyclictest5864-21kworker/1:007:22:111
127449973,3cyclictest5974-21cat10:10:161
127449973,3cyclictest560-21gdbus10:40:061
127449973,3cyclictest504-21dbus-daemon07:30:001
127449973,3cyclictest275-21systemd-journal11:45:001
127449973,3cyclictest20901-21ntpq09:20:161
127449973,2cyclictest30727-21snmpd11:49:181
127449972,3cyclictest30727-21snmpd09:45:231
127449972,3cyclictest275-21systemd-journal12:15:001
127449970,6cyclictest4107-21smart_sda09:30:191
127409976,1cyclictest12-21ksoftirqd/012:40:000
127409976,1cyclictest12-21ksoftirqd/009:20:000
127409973,3cyclictest30727-21snmpd11:00:500
127409973,1cyclictest141rcu_preempt12:14:110
127409973,0cyclictest12-21ksoftirqd/010:30:120
127529966,0cyclictest0-21swapper/309:10:003
127529964,1cyclictest6958-21hddtemp_smartct10:30:143
127529963,2cyclictest9174-21ssh12:26:283
127529963,2cyclictest504-21dbus-daemon12:15:023
127529963,2cyclictest504-21dbus-daemon10:11:083
127529963,2cyclictest504-21dbus-daemon08:31:153
127529963,2cyclictest30727-21snmpd11:28:263
127529963,2cyclictest30727-21snmpd11:20:233
127529963,2cyclictest30633-21smart_sda10:05:203
127529963,2cyclictest29837-21grep08:55:143
127529963,2cyclictest275-21systemd-journal11:36:113
127529963,2cyclictest27308-21ssh10:23:023
127529963,2cyclictest25615-21sshd10:40:443
127529963,2cyclictest21948-21ssh09:21:383
127529963,2cyclictest14778-11brltty11:41:363
127529962,3cyclictest9253-21ls10:50:213
127529962,3cyclictest4866-21cat08:00:153
127529962,3cyclictest30727-21snmpd11:19:173
127529962,3cyclictest30727-21snmpd10:00:183
127529962,3cyclictest30727-21snmpd09:39:043
127529962,3cyclictest30727-21snmpd08:50:213
127529962,3cyclictest30727-21snmpd08:25:533
127529962,3cyclictest30727-21snmpd08:20:593
127529962,3cyclictest30727-21snmpd08:15:053
127529962,3cyclictest30727-21snmpd07:51:593
127529962,3cyclictest30235-21cat07:45:133
127529962,3cyclictest30232-21expr12:20:133
127529962,3cyclictest28949-21expr12:00:133
127529962,3cyclictest275-21systemd-journal08:10:193
127529962,3cyclictest24785-21packagekitd08:45:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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