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2026-04-01 - 01:53
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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
Characteristics of the 50 highest latencies:
System rackeslot2.osadl.org (updated Tue Mar 31, 2026 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
103582521540,2sleep30-21swapper/309:51:143
117848921090,2sleep30-21swapper/311:25:023
116706721000,1sleep10-21swapper/111:16:181
10806592870,1sleep00-21swapper/010:21:020
12159912650,3sleep01215989-21ssh11:50:000
11522462380,5sleep01152247-21grep11:06:190
11189412280,1sleep00-21swapper/010:46:150
820876992519,2cyclictest134050irq/121-eno112:10:021
820876992420,2cyclictest3824565-21in:imuxsock10:55:021
820872992415,5cyclictest1290-21dbus-daemon10:55:010
820872992320,2cyclictest1034451-21/usr/sbin/munin09:50:010
820876992219,2cyclictest820863-21cyclictest09:15:001
82087299229,5cyclictest0-21swapper/009:55:000
820872992215,5cyclictest1103305-21/usr/sbin/munin10:36:170
820872992213,5cyclictest1110810-21aten2.4-expect10:41:120
820872992212,6cyclictest1004847-21/usr/sbin/munin09:31:230
383433398220,2rtkit-daemon0-21swapper/012:25:530
383433398220,2rtkit-daemon0-21swapper/012:25:530
10917202220,2sleep30-21swapper/310:26:183
820877992118,1cyclictest0-21swapper/208:30:352
820877992118,1cyclictest0-21swapper/208:05:002
820876992114,3cyclictest3851705-21mta-sts-daemon11:58:481
820872992118,2cyclictest873177-21idleruntime-cro07:50:000
820872992118,2cyclictest1072639-21gdbus10:15:020
820872992113,5cyclictest1240595-21kthreadcore12:06:180
820872992112,5cyclictest1016869-21kthreadcore09:36:200
820872992110,6cyclictest0-21swapper/011:20:360
383433398210,3rtkit-daemon3952751-21ntpd11:01:070
383433398210,3rtkit-daemon3952751-21ntpd09:03:240
383433398210,3rtkit-daemon3952751-21ntpd08:30:040
820877992017,1cyclictest0-21swapper/212:20:002
820877992017,1cyclictest0-21swapper/207:25:002
820876992014,2cyclictest1159586-21kthreadcore11:11:181
820876992012,3cyclictest1199470-21switchtime11:36:251
820872992017,2cyclictest1290-21dbus-daemon11:56:220
820872992014,5cyclictest854594-21cut07:35:010
820872992013,6cyclictest0-21swapper/011:35:010
383433398200,2rtkit-daemon3952751-21ntpd08:37:020
383433398200,2rtkit-daemon0-21swapper/008:02:570
820877991916,1cyclictest0-21swapper/209:33:082
820877991913,2cyclictest0-21swapper/208:16:202
820876991916,2cyclictest1178246-21latency_hist11:25:011
820876991913,5cyclictest3851703-21mta-sts-daemon12:29:391
820876991913,5cyclictest3851703-21mta-sts-daemon12:29:391
820876991912,3cyclictest1083650-21kthreadcore10:21:181
820876991911,4cyclictest1237650-21runrttasks12:02:131
820876991911,4cyclictest0-21swapper/110:16:211
82087299199,6cyclictest0-21swapper/009:20:020
82087299199,5cyclictest0-21swapper/012:36:110
820872991916,2cyclictest1261193-21latency_hist12:20:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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