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2025-12-18 - 01:29
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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 100 highest latencies:
System rack1slot1.osadl.org (updated Thu Dec 18, 2025 00:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
129202224161,51sleep20-21swapper/219:09:232
127802210148,48sleep10-21swapper/119:07:331
127972201141,22sleep30-21swapper/319:07:473
126402197160,24sleep00-21swapper/019:05:430
171532600,0sleep10-21swapper/123:45:181
1305799150,14cyclictest8676-21apt-get21:15:112
1305799150,14cyclictest18017-21unixbench_singl19:15:212
1305799150,14cyclictest15402-21perf19:15:012
1305799140,13cyclictest2926-21perf19:55:002
13057991311,1cyclictest28-21ksoftirqd/223:35:002
1305799130,6cyclictest23623-21users22:50:212
1305799130,6cyclictest23623-21users22:50:212
1305799130,12cyclictest19770-21sed23:50:202
1305799130,12cyclictest0-21swapper/221:50:112
1305799130,1cyclictest7692-21sh00:35:152
1305799130,0cyclictest0-21swapper/223:15:132
1305799130,0cyclictest0-21swapper/221:10:112
1305799130,0cyclictest0-21swapper/219:25:202
1305799120,11cyclictest0-21swapper/221:20:162
1305799120,1cyclictest0-21swapper/219:20:182
1305299120,0cyclictest0-21swapper/122:55:111
13050991211,1cyclictest9-21ksoftirqd/019:15:010
13050991210,1cyclictest9-21ksoftirqd/022:55:010
13050991210,1cyclictest9-21ksoftirqd/022:55:010
1305799112,8cyclictest26822-21apt-get23:00:122
1305799110,10cyclictest0-21swapper/221:43:012
1305099119,1cyclictest9-21ksoftirqd/023:15:170
1305099119,1cyclictest9-21ksoftirqd/021:55:000
1305099119,1cyclictest9-21ksoftirqd/021:20:000
1305099119,1cyclictest9-21ksoftirqd/019:35:000
13050991110,1cyclictest9-21ksoftirqd/023:00:150
1305099110,5cyclictest318-21apt-get19:50:000
1305799106,3cyclictest707-21snmpd20:57:152
1305799106,3cyclictest707-21snmpd20:57:152
1305799102,7cyclictest30130-21grep20:50:142
1305799100,9cyclictest5723-21/usr/sbin/munin20:00:202
1305799100,9cyclictest0-21swapper/222:30:152
1305799100,9cyclictest0-21swapper/221:30:212
1305799100,10cyclictest0-21swapper/221:45:162
1305799100,1cyclictest9227-21ntpq20:05:182
1305799100,1cyclictest5987-21ntpq00:30:182
1305799100,1cyclictest0-21swapper/223:37:022
1305099109,1cyclictest9-21ksoftirqd/020:30:190
1305099108,1cyclictest9-21ksoftirqd/022:25:120
1305099101,4cyclictest16787-21sed22:40:000
130639998,1cyclictest35-21ksoftirqd/320:25:003
130639997,1cyclictest35-21ksoftirqd/320:30:003
130639997,1cyclictest35-21ksoftirqd/319:45:003
130639996,1cyclictest35-21ksoftirqd/319:59:553
130579998,1cyclictest28-21ksoftirqd/220:00:012
130579995,3cyclictest61650irq/122-eno120:40:002
130579990,9cyclictest0-21swapper/223:20:132
130579990,8cyclictest0-21swapper/222:20:162
130579990,8cyclictest0-21swapper/220:43:202
130579990,6cyclictest240-21systemd-journal23:10:002
130579990,4cyclictest0-21swapper/220:15:152
130579990,1cyclictest27524-21apt-get21:55:012
130579990,0cyclictest24047-21ntpq00:00:182
130579990,0cyclictest0-21swapper/222:00:222
130579990,0cyclictest0-21swapper/220:30:142
130509998,1cyclictest9-21ksoftirqd/023:45:000
130509998,1cyclictest9-21ksoftirqd/023:25:200
130509998,1cyclictest9-21ksoftirqd/023:10:000
130509998,1cyclictest9-21ksoftirqd/021:20:150
130509998,1cyclictest9-21ksoftirqd/020:40:000
130509998,1cyclictest9-21ksoftirqd/020:15:150
130509998,1cyclictest9-21ksoftirqd/019:55:010
130509998,1cyclictest9-21ksoftirqd/019:20:120
130509998,1cyclictest9-21ksoftirqd/000:30:180
130509998,1cyclictest9-21ksoftirqd/000:20:210
130509998,1cyclictest9-21ksoftirqd/000:00:010
130509997,1cyclictest9-21ksoftirqd/022:40:140
130509997,1cyclictest9-21ksoftirqd/022:15:140
130509997,1cyclictest9-21ksoftirqd/019:45:000
130639987,1cyclictest35-21ksoftirqd/321:40:003
130639986,1cyclictest707-21snmpd23:34:083
130639986,1cyclictest707-21snmpd23:18:343
130639986,1cyclictest707-21snmpd22:00:173
130639986,1cyclictest707-21snmpd21:44:463
130639986,1cyclictest35-21ksoftirqd/322:20:003
130639986,1cyclictest35-21ksoftirqd/321:15:003
130639985,1cyclictest35-21ksoftirqd/321:30:003
130639982,3cyclictest27028-21unixbench_multi21:50:193
130639981,4cyclictest4041-21apt-get23:20:143
130639980,7cyclictest24451-21python21:45:203
130639980,5cyclictest1-21systemd20:04:553
130579986,1cyclictest28-21ksoftirqd/223:10:092
130579982,5cyclictest3626-21grep00:25:182
130579982,5cyclictest25737-21/usr/sbin/munin19:35:152
130579980,8cyclictest0-21swapper/200:10:162
130579980,7cyclictest6100-21munin-run21:10:012
130579980,7cyclictest32111-21perf00:20:002
130579980,7cyclictest26604-21sendmail-msp23:00:012
130579980,7cyclictest2242-21chrt22:05:472
130579980,7cyclictest21659-21munin-run22:50:002
130579980,7cyclictest12023-21apt22:30:002
130579980,7cyclictest0-21swapper/200:20:202
130579980,6cyclictest240-21systemd-journal20:50:002
130579980,4cyclictest0-21swapper/219:30:152
130579980,0cyclictest0-21swapper/223:40:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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