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2026-05-16 - 12:21
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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 May 16, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
63202320290,20sleep20-21swapper/219:08:402
63722262231,21sleep10-21swapper/119:09:201
61872260229,20sleep30-21swapper/319:06:573
63302259229,19sleep00-21swapper/019:08:460
299272600,0sleep30-21swapper/323:27:283
117242590,0sleep012-21ksoftirqd/023:55:200
40392580,0sleep00-21swapper/021:53:470
243762560,0sleep10-21swapper/121:26:001
200882560,0sleep10-21swapper/100:00:211
173962550,0sleep20-21swapper/200:18:562
71972540,0sleep30-21swapper/323:33:323
160182380,0sleep00-21swapper/020:40:150
130792190,1sleep00-21swapper/020:35:100
120712190,0sleep20-21swapper/221:58:382
308822180,0sleep30-21swapper/322:29:543
296482170,0sleep20-21swapper/221:49:532
219372150,0sleep00-21swapper/023:42:060
196672150,0sleep30-21swapper/322:42:073
7182140,0sleep30-21swapper/300:08:483
653399107,2cyclictest12-21ksoftirqd/020:35:010
65419996,2cyclictest9752-21ssh00:34:002
65339996,2cyclictest12-21ksoftirqd/019:30:010
25282290,0sleep30-21swapper/321:26:423
65419984,3cyclictest275-21systemd-journal23:09:432
65419982,4cyclictest5850-21cron20:20:012
65339986,2cyclictest24249-21cron21:00:000
65339985,2cyclictest658-21snmpd00:25:410
65339984,3cyclictest275-21systemd-journal23:48:370
9868270,0sleep20-21swapper/223:35:122
65449976,1cyclictest0-21swapper/322:40:013
65449973,3cyclictest966-21sed23:10:143
65449973,3cyclictest658-21snmpd23:17:103
65449973,3cyclictest658-21snmpd21:33:513
65449973,3cyclictest560-21gdbus23:47:423
65449973,3cyclictest275-21systemd-journal19:49:293
65449973,3cyclictest10571-21apt-get20:30:123
65449973,2cyclictest275-21systemd-journal20:25:503
65449972,2cyclictest7509-21sed19:10:163
65419974,2cyclictest658-21snmpd00:36:142
65419974,2cyclictest501-21in:imuxsock00:05:002
65419973,3cyclictest658-21snmpd23:14:012
65419973,3cyclictest275-21systemd-journal21:14:162
65369974,2cyclictest504-21dbus-daemon00:33:141
65369973,3cyclictest658-21snmpd23:19:221
65369973,3cyclictest22777-21sshd00:21:431
65369972,4cyclictest8912-21needreboot22:55:161
65369970,6cyclictest0-21swapper/100:08:031
65339973,3cyclictest658-21snmpd22:38:030
65339973,3cyclictest12-21ksoftirqd/022:31:120
65339973,3cyclictest12-21ksoftirqd/022:31:120
65449964,1cyclictest244122sleep323:05:103
65449964,1cyclictest0-21swapper/300:20:113
65449963,2cyclictest28806-21ssh22:08:533
65449963,2cyclictest275-21systemd-journal19:15:443
65449963,2cyclictest27285-21ssh21:47:593
65449963,2cyclictest25443-21grep21:00:153
65449963,2cyclictest22417-21sshd19:41:443
65449963,2cyclictest18769-21memory23:40:153
65449963,2cyclictest18337-21ssh00:19:413
65449962,3cyclictest7005-21runrttasks00:31:523
65449962,3cyclictest658-21snmpd23:51:343
65449962,3cyclictest658-21snmpd23:38:103
65449962,3cyclictest658-21snmpd22:52:033
65449962,3cyclictest658-21snmpd22:35:003
65449962,3cyclictest658-21snmpd22:35:003
65449962,3cyclictest658-21snmpd22:20:383
65449962,3cyclictest658-21snmpd22:15:143
65449962,3cyclictest658-21snmpd21:21:163
65449962,3cyclictest658-21snmpd20:05:263
65449962,3cyclictest658-21snmpd00:25:323
65449962,3cyclictest27713-21cat21:05:143
65449962,3cyclictest275-21systemd-journal19:50:283
65449962,3cyclictest275-21systemd-journal00:02:413
65449962,3cyclictest17393-21cat23:20:123
65449962,3cyclictest16863-21awk20:40:203
65449962,1cyclictest0-21swapper/322:46:213
65449962,1cyclictest0-21swapper/322:01:493
65449962,1cyclictest0-21swapper/321:36:063
65449961,4cyclictest0-21swapper/300:35:133
65449961,3cyclictest275-21systemd-journal22:10:543
65449961,3cyclictest275-21systemd-journal21:51:243
65449960,6cyclictest0-21swapper/323:58:123
65449960,6cyclictest0-21swapper/323:00:283
65449960,5cyclictest8034-21ssh21:55:293
65449960,0cyclictest0-21swapper/321:41:113
65419966,0cyclictest0-21swapper/223:02:002
65419966,0cyclictest0-21swapper/222:25:262
65419963,2cyclictest8599-21sh22:15:372
65419963,2cyclictest658-21snmpd23:45:282
65419963,2cyclictest658-21snmpd22:23:352
65419963,2cyclictest658-21snmpd21:37:572
65419963,2cyclictest658-21snmpd00:29:592
65419963,2cyclictest501-21in:imuxsock20:07:292
65419963,2cyclictest29866-21sh22:09:422
65419963,2cyclictest275-21systemd-journal19:57:032
65419963,2cyclictest275-21systemd-journal19:30:242
65419963,2cyclictest19720-21ssh23:20:572
65419963,2cyclictest15900-21grep22:00:182
65419963,2cyclictest14314-21sh23:18:112
65419963,2cyclictest13960-21ssh22:39:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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