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2026-07-19 - 17:19
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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 19, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
189072322290,19sleep20-21swapper/207:08:282
186902265233,22sleep30-21swapper/307:05:403
188162263232,21sleep00-21swapper/007:07:180
187442259226,22sleep10-21swapper/107:06:221
39682630,1sleep2281ksoftirqd/210:25:042
237652630,0sleep10-21swapper/109:38:261
34402620,0sleep00-21swapper/011:42:460
24882570,0sleep10-21swapper/111:02:591
48042560,0sleep00-21swapper/011:04:470
149042560,0sleep20-21swapper/212:29:252
151442550,0sleep00-21swapper/010:31:070
295642210,0sleep20-21swapper/212:18:322
269632190,0sleep00-21swapper/009:40:120
204192190,0sleep00-21swapper/012:12:500
168332180,0sleep30-21swapper/308:15:123
309602170,1sleep030963-21sh12:00:010
131172160,0sleep30-21swapper/312:28:023
17272140,0sleep30-21swapper/312:01:043
256442120,0sleep10-21swapper/107:20:201
74492100,1sleep07415-21ssh11:45:140
18484290,0sleep30-21swapper/311:32:053
2784280,0sleep30-21swapper/308:55:163
191579983,3cyclictest275-21systemd-journal07:59:451
191529986,2cyclictest12-21ksoftirqd/010:20:020
191529982,4cyclictest21345-21munin-run07:15:000
191529982,2cyclictest14367-21/usr/sbin/munin08:10:130
191529980,5cyclictest17575-21grep09:34:590
28457270,0sleep00-21swapper/011:38:260
25109270,0sleep30-21swapper/311:16:143
191659975,1cyclictest34-21ksoftirqd/310:35:013
191659973,3cyclictest275-21systemd-journal08:44:303
191659973,3cyclictest275-21systemd-journal08:44:303
191659973,3cyclictest275-21systemd-journal07:14:553
191659973,1cyclictest0-21swapper/311:41:433
191659970,7cyclictest0-21swapper/309:21:253
191619975,2cyclictest28-21ksoftirqd/211:50:002
191619973,3cyclictest658-21snmpd12:23:362
191619973,3cyclictest658-21snmpd10:49:522
191619973,2cyclictest275-21systemd-journal12:30:012
191619973,1cyclictest0-21swapper/212:14:432
191579976,1cyclictest2482-21kworker/1:011:07:541
191579973,3cyclictest674-21lldpd10:21:551
191579973,3cyclictest658-21snmpd12:11:391
191579973,3cyclictest275-21systemd-journal08:20:001
191579973,3cyclictest25229-21cron09:20:001
191579972,2cyclictest10502-21if_enp4s009:30:151
191529973,3cyclictest275-21systemd-journal12:25:010
191529972,3cyclictest17004-21turbostat09:15:000
191529972,1cyclictest3588-21fschecks_time10:05:140
191529970,3cyclictest275-21systemd-journal11:23:240
14522270,0sleep114525-21munin-plugin-st11:50:001
13489270,0sleep10-21swapper/112:08:501
6108260,0sleep10-21swapper/107:50:161
26789260,0sleep10-21swapper/107:25:121
191659966,0cyclictest0-21swapper/310:27:363
191659966,0cyclictest0-21swapper/309:45:023
191659966,0cyclictest0-21swapper/307:50:223
191659964,1cyclictest29003-21ntp_states10:20:173
191659963,2cyclictest658-21snmpd09:10:323
191659963,2cyclictest658-21snmpd07:35:483
191659963,2cyclictest658-21snmpd07:17:313
191659963,2cyclictest504-21dbus-daemon10:09:573
191659963,2cyclictest29399-21ssh12:18:253
191659963,2cyclictest275-21systemd-journal11:35:303
191659963,2cyclictest275-21systemd-journal10:45:143
191659963,2cyclictest24200-21ssh10:36:463
191659963,2cyclictest19604-21basename10:15:103
191659963,2cyclictest19043-21cat09:15:203
191659963,2cyclictest17819-21ssh11:51:113
191659963,2cyclictest15061-21cat08:10:163
191659963,2cyclictest13459-21threads08:05:213
191659963,2cyclictest12206-21ssh09:30:523
191659963,1cyclictest0-21swapper/312:11:253
191659962,3cyclictest7844-21ntp_kernel_err11:45:183
191659962,3cyclictest658-21snmpd12:32:003
191659962,3cyclictest658-21snmpd11:09:103
191659962,3cyclictest658-21snmpd10:40:103
191659962,3cyclictest658-21snmpd09:00:483
191659962,3cyclictest658-21snmpd08:54:423
191659962,3cyclictest658-21snmpd08:38:073
191659962,3cyclictest658-21snmpd08:22:083
191659962,3cyclictest658-21snmpd07:55:373
191659962,3cyclictest658-21snmpd07:48:273
191659962,3cyclictest491-21systemd-logind11:25:303
191659962,3cyclictest24171-21tail08:30:143
191659962,3cyclictest22057-21cat08:25:163
191659962,3cyclictest14228-21expr11:10:113
191659962,3cyclictest1-21systemd09:50:183
191659962,1cyclictest0-21swapper/312:21:483
191659962,1cyclictest0-21swapper/312:08:413
191659962,1cyclictest0-21swapper/311:21:283
191659962,1cyclictest0-21swapper/310:56:013
191659962,1cyclictest0-21swapper/310:01:373
191659960,6cyclictest0-21swapper/310:10:383
191659960,0cyclictest0-21swapper/311:56:153
191659960,0cyclictest0-21swapper/311:01:313
191659960,0cyclictest0-21swapper/307:40:163
191619966,0cyclictest0-21swapper/210:57:342
191619966,0cyclictest0-21swapper/209:43:002
191619964,1cyclictest23794-21ls08:30:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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