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2026-03-10 - 21:38
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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 Tue Mar 10, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
298932302270,22sleep10-21swapper/107:09:031
296142301273,18sleep20-21swapper/207:05:422
296222267237,20sleep00-21swapper/007:05:490
279892257225,21sleep30-21swapper/307:05:033
85062550,0sleep20-21swapper/212:18:312
217132550,0sleep30-21swapper/311:27:553
317232540,0sleep00-21swapper/011:53:510
93532210,0sleep20-21swapper/211:20:172
213962190,0sleep30-21swapper/312:06:273
168762190,0sleep00-21swapper/012:23:340
50292180,0sleep10-21swapper/111:37:221
37992180,0sleep10-21swapper/110:57:181
31162170,0sleep00-21swapper/010:17:330
109592170,0sleep10-21swapper/110:02:441
308402150,0sleep10-21swapper/111:14:041
273012140,0sleep20-21swapper/210:51:462
98672130,0sleep20-21swapper/207:35:142
296612130,0sleep20-21swapper/211:32:432
3008299121,3cyclictest275-21systemd-journal11:59:152
223932120,0sleep00-21swapper/011:08:550
3008299113,1cyclictest0-21swapper/212:09:142
3008299110,3cyclictest29702-21ssh10:14:272
3008299110,2cyclictest2291-21ssh12:34:302
3008299103,3cyclictest275-21systemd-journal08:40:012
3008299103,2cyclictest275-21systemd-journal08:52:552
3008299100,3cyclictest1522-21ssh10:55:312
3008299100,3cyclictest14238-21latency_hist07:45:002
3008299100,2cyclictest275-21systemd-journal12:40:002
3008299100,2cyclictest275-21systemd-journal11:36:162
3008299100,2cyclictest275-21systemd-journal08:20:002
3008299100,2cyclictest12917-21ssh12:01:192
3007399108,1cyclictest12-21ksoftirqd/007:40:010
300829993,1cyclictest7878-21fschecks_time07:30:152
300829992,2cyclictest7962-21cut10:40:152
300829992,2cyclictest658-21snmpd09:59:122
300829992,1cyclictest0-21swapper/211:50:172
300829992,1cyclictest0-21swapper/211:03:092
300829992,1cyclictest0-21swapper/210:01:322
300829992,1cyclictest0-21swapper/209:52:552
300829991,7cyclictest0-21swapper/210:24:172
300829991,2cyclictest504-21dbus-daemon10:50:022
300829991,2cyclictest21348-21munin-run09:50:002
300829991,2cyclictest20109-21ssh09:10:102
300829991,1cyclictest0-21swapper/208:00:012
300829990,4cyclictest23429-21sh09:31:022
300829990,3cyclictest4796-21head09:20:132
300829990,3cyclictest30898-21sh10:15:092
300829990,3cyclictest29090-21ssh09:35:132
300829990,3cyclictest275-21systemd-journal10:39:052
300829990,3cyclictest27209-21ssh10:32:052
300829990,3cyclictest25631-21sensors_temp11:10:182
300829990,3cyclictest20165-21rm11:46:162
300829990,3cyclictest18780-21munin-run12:25:012
300829990,3cyclictest16587-21grep11:05:132
300829990,3cyclictest13959-21expr08:55:162
300829990,3cyclictest13959-21expr08:55:162
300829990,2cyclictest275-21systemd-journal12:14:172
300829990,2cyclictest275-21systemd-journal09:43:552
300829990,1cyclictest32276-21/usr/sbin/munin08:25:162
300829990,1cyclictest275-21systemd-journal08:25:002
300849985,2cyclictest3660-21ssh09:39:233
300829982,1cyclictest31285-21cut07:10:192
300829982,1cyclictest21522-21cat08:00:122
300829981,3cyclictest11288-21ssh11:40:502
300829981,2cyclictest6756-21cut08:40:122
300829981,1cyclictest17648-21ntpq07:50:172
300829980,3cyclictest9746-21ntp_states08:45:192
300829980,3cyclictest711-21awk07:15:142
300829980,3cyclictest3683-21grep07:20:152
300829980,3cyclictest32446-21sh09:17:102
300829980,3cyclictest32329-21rm11:15:022
300829980,3cyclictest23949-21expr08:05:152
300829980,3cyclictest2212-21/usr/sbin/munin08:30:112
300829980,3cyclictest19692-21grep12:25:132
300829980,3cyclictest18676-21/usr/sbin/munin09:05:162
300829980,3cyclictest15563-21proc_pri07:45:192
300829980,3cyclictest15284-21expr10:25:132
300829980,3cyclictest14821-21rm09:25:482
300829980,3cyclictest14383-21/usr/sbin/munin10:05:122
300829980,2cyclictest25983-21df08:10:122
300829980,2cyclictest16771-21/usr/sbin/munin11:25:122
300779982,3cyclictest23249-21munin-run10:50:011
300779980,6cyclictest18784-21idleruntime-cro12:25:001
300739987,1cyclictest12-21ksoftirqd/009:29:590
300739986,1cyclictest12-21ksoftirqd/009:50:010
300739985,2cyclictest12-21ksoftirqd/008:10:000
20543280,0sleep10-21swapper/111:27:021
300849973,3cyclictest658-21snmpd11:22:483
300849973,3cyclictest658-21snmpd09:23:583
300849973,3cyclictest658-21snmpd08:00:303
300849973,3cyclictest275-21systemd-journal09:58:213
300849973,1cyclictest0-21swapper/310:14:513
300849972,4cyclictest8656-11brltty09:43:063
300849970,7cyclictest2811-21ssh10:36:543
300849970,6cyclictest32035-21cron08:25:003
300829970,2cyclictest5660-21fschecks_time07:25:142
300829970,2cyclictest15727-21cstates09:00:112
300779973,3cyclictest7183-21df_inode10:20:121
300779973,3cyclictest658-21snmpd07:55:501
300779973,3cyclictest504-21dbus-daemon07:40:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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