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2026-09-05 - 15:21
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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 Sat Sep 05, 2026 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
179112319292,18sleep20-21swapper/207:08:132
177382282252,20sleep30-21swapper/307:06:003
178522281253,18sleep10-21swapper/107:07:271
178082268240,18sleep00-21swapper/007:06:540
38432710,0sleep00-21swapper/010:05:170
209082590,0sleep00-21swapper/010:35:160
209082590,0sleep00-21swapper/010:35:160
207132580,0sleep00-21swapper/012:12:180
244612570,0sleep20-21swapper/210:56:322
218312560,0sleep30-21swapper/310:15:493
303772550,0sleep00-21swapper/009:23:020
154762540,0sleep30-21swapper/312:09:413
67992180,0sleep10-21swapper/110:07:021
231612180,0sleep30-21swapper/309:57:273
35792140,0sleep10-21swapper/111:04:001
144722140,0sleep00-21swapper/009:13:340
18163991310,3cyclictest22-21ksoftirqd/111:40:001
60682120,0sleep20-21swapper/209:27:542
18158991210,2cyclictest12-21ksoftirqd/008:45:010
1816399107,1cyclictest22-21ksoftirqd/109:50:011
23124290,0sleep10-21swapper/109:38:021
181639998,1cyclictest22-21ksoftirqd/110:35:011
181669985,2cyclictest28-21ksoftirqd/207:30:012
181669983,3cyclictest6758-21awk07:55:012
181669980,5cyclictest6643-21perf11:45:002
181639988,0cyclictest221ksoftirqd/109:20:001
181589984,3cyclictest14362-21sh09:52:020
181589983,1cyclictest0-21swapper/010:53:560
15227280,0chrt0-21swapper/112:28:521
15179280,1sleep115178-21gpgv11:50:011
9103270,0sleep20-21swapper/211:26:182
29334270,0sleep10-21swapper/112:36:571
25727270,0sleep10-21swapper/108:35:161
25727270,0sleep10-21swapper/108:35:151
181719976,1cyclictest8981-21turbostat08:00:013
181719974,2cyclictest491-21systemd-logind11:18:203
181719973,3cyclictest27848-11brltty10:02:233
181719973,1cyclictest0-21swapper/310:41:243
181719972,3cyclictest275-21systemd-journal08:19:563
181719971,5cyclictest0-21swapper/310:50:143
181669974,2cyclictest12703-21sh12:07:312
181669973,3cyclictest30763-21dpkg11:40:012
181669973,3cyclictest30377-21memory08:45:142
181669973,3cyclictest275-21systemd-journal09:46:572
181669973,3cyclictest15221-21snmpd09:04:412
181669973,1cyclictest7670-21awk12:05:002
181669972,3cyclictest5589-21awk11:25:002
181669971,3cyclictest1593-21dump-pmu-power09:45:002
181669970,4cyclictest23466-21cron11:55:002
181639977,0cyclictest221ksoftirqd/111:15:001
181639977,0cyclictest221ksoftirqd/107:40:011
181639976,1cyclictest22-21ksoftirqd/112:00:001
181639976,1cyclictest22-21ksoftirqd/111:55:001
181639976,1cyclictest22-21ksoftirqd/111:10:001
181639976,1cyclictest22-21ksoftirqd/110:50:011
181639976,1cyclictest22-21ksoftirqd/110:20:011
181639976,1cyclictest22-21ksoftirqd/109:25:001
181639976,1cyclictest22-21ksoftirqd/108:50:011
181639973,3cyclictest275-21systemd-journal12:11:501
181639973,3cyclictest275-21systemd-journal12:08:041
181639973,3cyclictest275-21systemd-journal09:05:001
181639973,3cyclictest15221-21snmpd10:58:331
181639972,3cyclictest4538-21dump-pmu-power07:50:011
181639970,4cyclictest5591-21munin-run11:24:591
181639970,1cyclictest0-21swapper/111:41:411
181589976,1cyclictest12-21ksoftirqd/011:20:000
181589975,1cyclictest6454-21diskstats09:05:140
181589975,1cyclictest3001-21fschecks_count07:45:140
181589975,1cyclictest25140-21sh10:18:210
181589973,3cyclictest3206-21sshd08:55:350
181589973,3cyclictest275-21systemd-journal07:22:520
181589973,1cyclictest0-21swapper/009:34:500
721260,0sleep00-21swapper/012:00:160
18215260,0sleep00-21swapper/008:20:130
181719966,0cyclictest0-21swapper/312:30:263
181719966,0cyclictest0-21swapper/312:30:263
181719966,0cyclictest0-21swapper/310:55:323
181719966,0cyclictest0-21swapper/309:49:303
181719963,3cyclictest26064-21kworker/3:112:18:473
181719963,2cyclictest7838-21ssh10:46:333
181719963,2cyclictest7368-21expr11:45:123
181719963,2cyclictest6064-21sshd10:25:503
181719963,2cyclictest5686-21ssh09:27:373
181719963,2cyclictest334-21sort11:40:203
181719963,2cyclictest28277-21expr07:30:143
181719963,2cyclictest28081-21ssh11:38:123
181719963,2cyclictest27686-21sh12:35:413
181719963,2cyclictest26498-21ssh11:55:573
181719963,2cyclictest21022-21munin-node07:15:013
181719963,2cyclictest19332-21awk07:10:183
181719963,2cyclictest19163-21cut08:20:193
181719963,2cyclictest19134-21ssh09:15:463
181719963,2cyclictest16603-21ssh11:30:453
181719963,2cyclictest15221-21snmpd12:28:473
181719963,2cyclictest11764-21rm09:11:293
181719963,2cyclictest11157-21sh10:10:143
181719962,3cyclictest9938-21sed09:30:163
181719962,3cyclictest5727-21ntpq07:50:153
181719962,3cyclictest4070-21cat09:00:143
181719962,3cyclictest30747-21sed07:35:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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