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2026-07-05 - 02:20
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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 rackdslot0.osadl.org (updated Sat Jul 04, 2026 12:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
148499251,20cyclictest25166-21chrt08:49:201
148499250,20cyclictest19979-21chrt10:34:291
148499240,2cyclictest15355-21idleruntime10:25:191
148499240,23cyclictest12619-21cron07:30:011
148899230,18cyclictest0-21swapper/208:10:182
148499232,20cyclictest20315-21cpuspeed_turbos08:40:141
1484992314,8cyclictest13884-21cat11:20:001
148499230,16cyclictest9502-21fgrep09:15:201
148499230,16cyclictest27027-21cat09:50:011
1484992214,7cyclictest5213-21latency_hist11:05:001
1484992214,7cyclictest18757-21timerandwakeup11:25:211
1484992214,7cyclictest17756-21munin-run12:25:011
1484992214,7cyclictest13744-21timerwakeupswit08:25:211
148499220,2cyclictest27481-21grep07:55:161
148499220,2cyclictest27481-21grep07:55:151
148499220,21cyclictest2597-21if_enp1s007:10:171
148499220,20cyclictest11704-21latency09:20:161
148499220,16cyclictest993-21dbus-daemon08:05:211
148499220,16cyclictest8158-21sort11:10:011
148499220,16cyclictest22270-21nvmesmart_nvme010:35:201
148499220,16cyclictest11642-21cut10:20:011
148899214,15cyclictest10469-21sshd11:13:052
148899210,4cyclictest880-21rs:main2
1484992114,6cyclictest30280-21expr09:55:141
1484992114,6cyclictest22418-21sed12:30:201
1484992114,6cyclictest0-21swapper/110:45:171
1484992114,6cyclictest0-21swapper/110:40:151
1484992113,7cyclictest8189-21fschecks_count07:20:141
1484992113,1cyclictest0-21swapper/107:30:131
1484992113,1cyclictest0-21swapper/107:30:131
1484992112,3cyclictest5235-21apache_accesses09:10:111
148499210,2cyclictest5723-21sed10:09:001
148499210,2cyclictest5723-21sed10:08:591
148499210,2cyclictest27940-21fschecks_time09:50:141
148499210,2cyclictest22751-21expr11:35:151
148499210,2cyclictest20922-21grep11:30:181
148499210,20cyclictest3987-21H222:10:211
148499210,20cyclictest1212-21if_err_eno110:00:131
148499210,1cyclictest25113-21ps12:35:201
148499210,16cyclictest24148-21grep07:50:131
148499210,15cyclictest4810-21taskset07:15:081
148499210,15cyclictest0-21swapper/107:45:011
148899204,15cyclictest0-21swapper/207:33:092
148899204,15cyclictest0-21swapper/207:33:082
1488992016,3cyclictest29470-21ntpq11:45:192
1488992016,3cyclictest29470-21ntpq11:45:182
1484992015,4cyclictest0-21swapper/111:50:201
1484992014,5cyclictest0-21swapper/107:35:211
1484992013,1cyclictest18176-21apt-get12:25:131
148499200,2cyclictest3979-21H222:10:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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