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2026-07-29 - 19:41
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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 Jul 29, 2026 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
262812280254,17sleep10-21swapper/107:07:471
262622272246,15sleep20-21swapper/207:07:332
262172270239,20sleep00-21swapper/007:06:570
264602261228,22sleep30-21swapper/307:09:513
18632620,0sleep20-21swapper/212:19:592
64892610,0sleep10-21swapper/110:20:201
243942610,0sleep30-21swapper/309:52:583
58012560,0sleep10-21swapper/108:45:131
222332550,0sleep00-21swapper/010:10:290
174272540,0sleep00-21swapper/009:49:030
53782530,0sleep00-21swapper/010:00:250
5312210,0sleep30-21swapper/309:58:063
14982150,1sleep2271rcuc/208:35:122
252332140,0sleep20-21swapper/209:34:272
203592140,0sleep00-21swapper/011:45:220
202292140,0sleep20-21swapper/210:35:142
2658899134,3cyclictest275-21systemd-journal12:39:592
2659299122,8cyclictest275-21systemd-journal08:00:013
2659299120,3cyclictest14625-21ssh10:06:033
2659299111,0cyclictest0-21swapper/312:10:143
2659299110,2cyclictest4235-21expr10:00:153
2659299110,2cyclictest27024-21fschecks_time09:35:153
2659299110,1cyclictest5506-21grep07:30:213
2659299110,1cyclictest32055-21tr11:00:193
2659299110,1cyclictest16058-21ssh09:48:023
2659299103,6cyclictest3944-21cron07:30:003
2659299102,4cyclictest0-21swapper/310:15:193
2659299101,8cyclictest6171-21ls10:20:173
2659299100,9cyclictest6094-21fschecks_time08:45:133
2659299100,2cyclictest22123-21ssh10:10:233
2659299100,1cyclictest7260-21munin-run11:20:003
2659299100,1cyclictest5575-21ssh09:22:153
2659299100,1cyclictest32177-21ssh09:19:103
2659299100,1cyclictest27352-21sshd12:02:113
2659299100,1cyclictest25786-21tail10:45:203
2659299100,1cyclictest24289-21ssh09:33:433
2659299100,1cyclictest11108-21ssh09:25:193
2659299100,1cyclictest0-21swapper/307:15:193
28947290,0sleep10-21swapper/109:35:531
265929993,5cyclictest658-21snmpd07:51:383
265929992,6cyclictest7098-21ssh09:42:343
265929991,7cyclictest1-21systemd08:35:013
265929991,3cyclictest3731-21cat11:10:173
265929991,0cyclictest6583-21apt-get12:30:133
265929990,3cyclictest275-21systemd-journal09:04:003
265929990,3cyclictest22703-21ssh09:13:223
265929990,3cyclictest13353-21ssh10:25:103
265929990,2cyclictest9489-21ls11:25:003
265929990,2cyclictest29834-21ls12:10:013
265929990,2cyclictest29744-21hwlatdetect08:25:163
265929990,2cyclictest20934-21idleruntime-cro11:50:013
265929990,2cyclictest11945-21/usr/sbin/munin11:30:193
265929990,1cyclictest3360-21seq08:40:033
265929990,1cyclictest26869-21apt-get08:20:023
265929990,1cyclictest16696-21apt-get11:40:013
265929990,0cyclictest8801-21/usr/sbin/munin12:35:103
265889990,8cyclictest12440-21tr09:00:122
265929983,4cyclictest658-21snmpd07:41:503
265929982,5cyclictest8182-21chrt07:37:443
265929982,5cyclictest28918-21cut10:55:123
265929982,5cyclictest27000-21cstates07:10:143
265929982,5cyclictest22797-21if_err_enp4s008:10:153
265929981,1cyclictest17686-21apt-get08:00:123
265929981,1cyclictest17617-21apt-get10:30:133
265929980,7cyclictest9041-21smart_sda08:50:193
265929980,3cyclictest22297-21cstates10:40:123
265929980,3cyclictest20427-21expr08:05:163
265929980,3cyclictest20338-21fschecks_time10:35:153
265929980,3cyclictest15208-21/usr/sbin/munin09:05:163
265929980,3cyclictest14283-21cpuspeed_turbos11:35:133
265929980,3cyclictest11230-21cstates07:45:133
265929980,2cyclictest5312-21ntp_states12:25:183
265929980,2cyclictest25145-21memory08:15:163
265929980,2cyclictest23132-21apt11:55:013
265929980,2cyclictest2139-21sshd12:20:123
265929980,2cyclictest1866-21tr11:05:173
265929980,2cyclictest10969-21grep11:25:203
265929980,2cyclictest10434-21chrt08:55:113
265929980,1cyclictest3108-21cron08:40:003
265929980,1cyclictest27164-21hwlatdetect10:50:163
265929980,1cyclictest1856-21apt12:20:003
265929980,1cyclictest0-21swapper/307:20:023
265889984,3cyclictest275-21systemd-journal08:55:002
265839987,1cyclictest22-21ksoftirqd/110:20:011
265839983,3cyclictest275-21systemd-journal08:57:111
265809983,3cyclictest275-21systemd-journal07:55:010
265809982,3cyclictest14268-21munin-run09:05:000
28869270,3sleep228-21ksoftirqd/209:16:412
265929970,3cyclictest23590-21cat11:55:143
265889970,4cyclictest17366-21basename10:30:012
265889970,3cyclictest16498-21dump-pmu-power09:10:012
265839973,3cyclictest31350-21apt08:30:121
265839973,3cyclictest275-21systemd-journal12:21:111
265839973,3cyclictest275-21systemd-journal07:50:021
265839973,1cyclictest0-21swapper/110:04:351
265839972,3cyclictest1876-21perf12:19:591
265809973,3cyclictest658-21snmpd09:33:340
265809973,3cyclictest504-21dbus-daemon09:45:020
265809973,3cyclictest504-21dbus-daemon09:29:550
265809973,3cyclictest27787-21sed07:10:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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