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2026-06-15 - 17:40
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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 rack3slot6.osadl.org (updated Mon Jun 15, 2026 12:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1627829730,19sleep10-21swapper/107:07:221
16713999519,59cyclictest0-21swapper/108:35:111
1671399867,64cyclictest5062-21apt-get11:30:141
16713998616,55cyclictest0-21swapper/111:15:121
16713998615,55cyclictest0-21swapper/112:15:141
1580028638,29sleep00-21swapper/007:05:270
1671399855,64cyclictest4877-21apt-get08:05:151
16713998514,57cyclictest0-21swapper/108:15:131
16713998514,56cyclictest0-21swapper/109:45:091
16713998513,61cyclictest0-21swapper/111:50:131
16713998510,59cyclictest13650-21runrttasks08:30:141
1671399846,62cyclictest15589-21apt-get12:00:141
16713998415,58cyclictest0-21swapper/110:50:141
1671399837,58cyclictest32456-21apt-get09:30:091
1671399836,65cyclictest6658-21apt-get08:10:121
16713998314,59cyclictest0-21swapper/108:25:161
16713998314,54cyclictest0-21swapper/110:45:141
16713998314,54cyclictest0-21swapper/109:05:131
1671399826,63cyclictest26983-21apt-get11:00:131
16713998214,57cyclictest0-21swapper/107:10:121
16713998214,55cyclictest0-21swapper/107:45:131
16713998214,54cyclictest0-21swapper/110:25:131
16713998213,55cyclictest0-21swapper/110:40:141
1671399817,62cyclictest12973-21apt-get10:20:241
1671399817,58cyclictest10352-21apt-get11:45:141
1671399816,64cyclictest24177-21apt-get09:00:141
1671399816,58cyclictest26338-21apt-get07:35:151
16713998114,55cyclictest0-21swapper/111:40:131
16713998114,52cyclictest0-21swapper/111:20:141
16713998113,57cyclictest0-21swapper/107:20:121
16713998113,53cyclictest0-21swapper/111:35:131
16713998111,59cyclictest0-21swapper/108:00:141
1671399807,59cyclictest17336-21apt-get12:05:121
1671399807,59cyclictest0-21swapper/107:50:241
1671399807,55cyclictest18936-21apt-get08:45:121
1671399806,61cyclictest24667-21apt-get12:25:221
16713998013,56cyclictest0-21swapper/110:15:091
16713998013,53cyclictest0-21swapper/111:25:131
16706998031,44cyclictest22048-21runrttasks07:21:310
1671399799,59cyclictest0-21swapper/111:55:111
16713997913,54cyclictest0-21swapper/107:25:131
1671399787,55cyclictest20676-21apt-get08:50:131
16713997814,52cyclictest0-21swapper/109:55:221
1671399776,55cyclictest30515-21apt-get11:10:121
1671399776,55cyclictest28281-21apt-get07:40:111
16713997722,49cyclictest2313-21sendmail-msp09:40:001
16713997713,50cyclictest0-21swapper/110:35:141
16713997710,57cyclictest503-21snmpd10:05:221
1671399766,56cyclictest29443-21apt-get09:15:121
1671399766,54cyclictest27705-21apt-get09:10:111
1671399766,52cyclictest1378-21apt-get07:55:151
16713997614,48cyclictest0-21swapper/112:30:221
16713997611,52cyclictest0-21swapper/108:40:151
1671399756,54cyclictest22626-21apt-get12:20:131
1671399756,52cyclictest5144-21apt-get09:53:231
1671399746,54cyclictest28446-21apt-get12:35:131
1671399746,52cyclictest25220-21apt-get10:55:121
16713997421,46cyclictest2457-21sshd09:40:051
1671399737,51cyclictest22414-21apt-get08:55:121
1671399737,51cyclictest19124-21apt-get12:10:121
1671399727,50cyclictest28719-21apt-get11:05:141
1671399726,51cyclictest19051-21apt-get07:15:121
1671399726,51cyclictest16455-21apt-get10:30:131
1671399725,52cyclictest10164-21apt-get08:20:131
16713997229,35cyclictest24896-21ls07:30:271
16706997230,37cyclictest25597-21find12:25:450
16706997230,37cyclictest19633-21grep08:45:260
16706997226,39cyclictest0-21swapper/011:30:180
16706997218,23cyclictest32584-21aten2.4-expect09:30:120
1671399713,62cyclictest503-21snmpd09:23:061
16706997130,34cyclictest26195-21/usr/sbin/munin09:05:180
16713997019,45cyclictest453-21in:imuxsock10:13:161
16706997032,19cyclictest31056-21latency_hist09:20:000
16706997031,14cyclictest25235-21sed09:00:380
16706997030,34cyclictest26654-21cstates07:35:210
16706997030,20cyclictest22624-21/usr/sbin/munin12:20:120
16706996935,9cyclictest8779-21tr10:05:280
16706996934,16cyclictest20836-21aten2.4-expect08:50:170
16706996929,33cyclictest23737-21/usr/sbin/munin10:50:180
1671399687,48cyclictest8026-21apt-get10:05:011
16706996843,20cyclictest1979-21missed_timers07:55:270
16706996830,32cyclictest2315-21ntp_states11:20:290
1670699675,22cyclictest20864-21apt-get12:15:130
16706996736,25cyclictest243-21systemd-journal09:59:590
16706996735,27cyclictest8423-21idleruntime-cro11:40:000
16706996725,36cyclictest11630-21ntp_states10:15:250
1670699672,36cyclictest0-21swapper/008:40:260
16706996638,21cyclictest16928-21/usr/sbin/munin07:10:160
16706996636,23cyclictest7173-21ls08:10:230
16706996628,32cyclictest3235-21telnet08:00:170
16706996628,32cyclictest17683-21diskstats12:05:220
16706996539,21cyclictest32601-21/usr/sbin/munin11:15:200
16706996537,22cyclictest2405-21latency_hist09:40:010
16706996536,23cyclictest27980-21cstates09:10:170
16706996534,25cyclictest562-21runrttasks11:42:390
16706996534,24cyclictest5484-21cat09:55:020
16706996533,27cyclictest26275-21grep10:55:350
16706996532,28cyclictest13032-21head08:25:380
16706996531,28cyclictest15378-21/usr/sbin/munin08:35:230
16706996530,13cyclictest562-21runrttasks09:43:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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