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2026-09-04 - 00:19
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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 Thu Sep 03, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
64652270240,20sleep10-21swapper/107:08:481
45892270238,21sleep20-21swapper/207:05:022
64322266237,19sleep00-21swapper/007:08:230
64092259227,21sleep30-21swapper/307:08:063
14072600,0sleep00-21swapper/011:07:270
49742570,0sleep20-21swapper/211:48:212
258962560,0sleep20-21swapper/210:24:482
288832550,0sleep20-21swapper/210:25:412
43222540,0sleep30-21swapper/309:14:423
192012540,0sleep10-21swapper/110:40:011
84522510,0sleep00-21swapper/010:52:250
98242200,0sleep20-21swapper/211:31:322
5292150,0sleep00-21swapper/012:24:350
66779993,3cyclictest4184-21cron08:15:012
25731290,0sleep20-21swapper/211:21:392
66819986,1cyclictest331rcuc/309:45:013
66819984,3cyclictest16577-21ntpq08:40:173
66819980,1cyclictest6404-21cron08:20:013
66779983,3cyclictest275-21systemd-journal08:55:002
66729987,1cyclictest22-21ksoftirqd/110:20:011
66729985,2cyclictest18930-21cron10:40:001
66689982,3cyclictest30115-21basename09:30:000
66689980,7cyclictest0-21swapper/010:06:170
21770280,0sleep00-21swapper/012:17:300
18154280,0sleep30-21swapper/310:20:093
9870270,0sleep012-21ksoftirqd/011:31:340
66819973,3cyclictest275-21systemd-journal10:30:363
66819973,3cyclictest15221-21snmpd10:52:513
66819973,3cyclictest10345-21hddtemp_smartct07:15:143
66819973,2cyclictest275-21systemd-journal11:12:473
66819973,2cyclictest275-21systemd-journal10:55:483
66819973,1cyclictest0-21swapper/309:29:333
66819970,1cyclictest0-21swapper/311:56:393
66779974,2cyclictest275-21systemd-journal07:55:092
66779973,3cyclictest504-21dbus-daemon08:45:182
66779973,3cyclictest17266-11brltty10:01:302
66779972,4cyclictest275-21systemd-journal09:35:582
66779972,4cyclictest16267-21sendmail10:00:012
66729975,1cyclictest7836-21expr11:50:161
66729972,4cyclictest275-21systemd-journal12:05:461
66689973,3cyclictest275-21systemd-journal10:56:050
66689973,3cyclictest16469-21apt-get07:30:120
66689973,1cyclictest0-21swapper/012:02:540
66689973,1cyclictest0-21swapper/012:02:540
66689972,3cyclictest22814-21munin-run11:40:010
66689970,6cyclictest0-21swapper/010:16:520
26672270,0sleep00-21swapper/010:44:290
19495270,0sleep30-21swapper/312:35:153
14879270,1sleep10-21swapper/111:35:111
9758260,0sleep10-21swapper/109:36:221
66819963,2cyclictest7001-21chrt11:30:173
66819963,2cyclictest504-21dbus-daemon08:25:013
66819963,2cyclictest3706-21rm11:47:243
66819963,2cyclictest27917-21ssh09:47:063
66819963,2cyclictest26413-21ssh11:03:153
66819963,2cyclictest25971-21cat12:00:203
66819963,2cyclictest25971-21cat12:00:203
66819963,2cyclictest23114-21memory11:20:153
66819963,2cyclictest17841-21sed10:00:183
66819963,2cyclictest1768-21grep10:10:193
66819963,2cyclictest15221-21snmpd10:42:273
66819963,2cyclictest15063-21cat07:25:173
66819963,2cyclictest13746-21df_inode08:35:123
66819963,2cyclictest12828-21ssh10:35:253
66819963,2cyclictest12316-21ssh09:57:053
66819962,3cyclictest693-21cat08:05:143
66819962,3cyclictest693-21cat08:05:143
66819962,3cyclictest504-21dbus-daemon12:30:233
66819962,3cyclictest275-21systemd-journal12:23:223
66819962,3cyclictest275-21systemd-journal08:55:173
66819962,3cyclictest27050-21df10:25:123
66819962,3cyclictest25609-21cut10:05:143
66819962,3cyclictest15221-21snmpd12:08:083
66819962,3cyclictest15221-21snmpd11:50:193
66819962,3cyclictest15221-21snmpd10:46:513
66819962,3cyclictest15221-21snmpd07:53:483
66819962,3cyclictest15221-21snmpd07:45:513
66819962,3cyclictest15221-21snmpd07:11:083
66819962,2cyclictest275-21systemd-journal10:15:353
66819962,1cyclictest0-21swapper/311:18:283
66819961,3cyclictest275-21systemd-journal11:40:523
66819961,3cyclictest275-21systemd-journal09:18:523
66819960,6cyclictest0-21swapper/309:53:013
66819960,6cyclictest0-21swapper/309:21:363
66819960,3cyclictest31692-21ntpq09:30:203
66819960,2cyclictest21015-21ntpq08:50:193
66819960,2cyclictest10390-21unixbench_multi08:25:203
66819960,0cyclictest0-21swapper/312:26:293
66819960,0cyclictest0-21swapper/312:17:063
66779966,0cyclictest0-21swapper/208:35:162
66779964,2cyclictest501-21in:imuxsock09:06:222
66779963,2cyclictest9947-21ssh11:50:472
66779963,2cyclictest4684-21ssh09:33:552
66779963,2cyclictest4367-21ssh12:07:032
66779963,2cyclictest32061-21ssh09:50:072
66779963,2cyclictest31806-21ssh12:23:422
66779963,2cyclictest28362-21ssh10:06:272
66779963,2cyclictest18922-21rm12:15:222
66779963,2cyclictest18854-21rm11:56:112
66779963,2cyclictest17771-21ssh11:36:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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