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2025-12-30 - 05:47
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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 rack5slot2.osadl.org (updated Tue Dec 30, 2025 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
180882235219,11sleep10-21swapper/119:08:151
179172215189,21sleep30-21swapper/319:06:033
181542186170,12sleep00-21swapper/019:09:050
18002210992,12sleep20-21swapper/219:07:072
167392500,0sleep20-21swapper/221:15:012
245992120,0sleep10-21swapper/122:35:151
184129994,1cyclictest21732-21apt-get21:25:153
184129993,1cyclictest27270-21which22:40:163
184129992,2cyclictest1191-21/usr/sbin/munin22:55:013
183999992,3cyclictest21327-21apt-get20:20:000
184129985,2cyclictest6376-21apt-get23:05:113
184129985,2cyclictest26440-21munin-run21:35:003
184129985,2cyclictest19005-21/usr/sbin/munin22:25:133
184129982,4cyclictest2388-21perl21:50:143
184129982,4cyclictest12245-21if_eth400:20:173
184129976,1cyclictest11662-21apt-get20:00:113
184129975,2cyclictest8557-21apt00:15:003
184129975,2cyclictest26162-21perf23:45:023
184129974,2cyclictest29155-21apt-get21:40:133
184129974,2cyclictest28847-21/usr/sbin/munin23:50:173
184129974,2cyclictest2087-21sort00:00:153
184129974,2cyclictest16601-21apt-get20:10:143
184129974,2cyclictest16328-21munin-run21:15:003
184129974,2cyclictest13558-21apt-get23:20:023
184129974,2cyclictest10356-21/usr/sbin/munin22:05:203
184129974,2cyclictest0-21swapper/323:10:123
184129973,1cyclictest4604-21perl23:00:143
184129973,1cyclictest11566-21apt-get22:10:123
184129972,3cyclictest12281-21if_eth423:15:163
184129972,2cyclictest9704-21cut21:00:183
184129972,2cyclictest4876-21wc00:05:163
184129972,2cyclictest17280-21df_inode21:15:143
183999971,3cyclictest26451-21basename21:35:010
184129965,1cyclictest9172-21apt-get19:55:123
184129965,1cyclictest6702-21apt-get19:50:113
184129965,1cyclictest4139-21apt-get21:55:143
184129965,1cyclictest31622-21apt-get21:45:103
184129965,1cyclictest26710-21apt-get20:30:103
184129965,1cyclictest18698-21apt-get00:35:153
184129965,1cyclictest1761-21apt-get19:40:113
184129965,1cyclictest1718-21apt-get20:45:133
184129965,1cyclictest14034-21apt-get22:15:103
184129964,2cyclictest7186-21diskstats20:55:133
184129964,2cyclictest28606-21cron23:50:003
184129964,2cyclictest23949-21apt-get22:35:123
184129964,2cyclictest22167-21perl23:35:143
184129964,2cyclictest19796-21smartctl23:30:163
184129964,2cyclictest18799-21cat22:25:013
184129964,2cyclictest16378-21munin-run20:10:003
184129964,2cyclictest15265-21python00:25:203
184129964,2cyclictest1488-21munin-run20:44:593
184129964,1cyclictest31703-21apt-get19:35:133
184129964,1cyclictest24298-21apt-get19:20:143
184129964,1cyclictest18517-21apt-get19:10:133
184129963,3cyclictest5925-21ls19:45:203
184129963,3cyclictest3042-21timerandwakeup22:55:213
184129963,3cyclictest29274-21basename19:30:133
184129963,3cyclictest24000-21cron20:25:003
184129963,2cyclictest29171-21chrt20:35:063
184129963,2cyclictest28964-21cut22:45:123
184129963,2cyclictest27584-21sed19:25:173
184129963,2cyclictest24406-21/usr/sbin/munin20:25:133
184129963,2cyclictest21488-21turbostat.cron21:25:003
184129963,2cyclictest21466-21chrt22:30:043
184129963,2cyclictest16746-21/usr/sbin/munin00:30:143
184129963,2cyclictest11637-21cut21:05:143
184129962,1cyclictest8791-21apt-get00:15:133
184129962,1cyclictest21032-21ntp_states19:15:013
184129961,1cyclictest4622-21cstates20:50:133
184129954,1cyclictest20352-21ntp_states20:15:183
184129953,2cyclictest26662-21chrt21:35:133
184129953,2cyclictest16588-21egrep23:25:103
184129952,2cyclictest758-21runrttasks22:00:023
184129952,2cyclictest31318-21seq23:55:123
184089950,5cyclictest0-21swapper/221:30:162
184089950,4cyclictest0-21swapper/223:20:012
184039953,1cyclictest0-21swapper/100:05:111
184039952,2cyclictest0-21swapper/120:15:131
184039951,3cyclictest0-21swapper/119:15:131
183999954,1cyclictest0-21swapper/019:55:140
183999950,4cyclictest0-21swapper/021:35:140
183999950,1cyclictest31428-21munin-run20:39:590
183999950,1cyclictest17062-21diskstats22:20:160
184089943,1cyclictest30702-21head22:45:212
184089943,1cyclictest27478-21grep20:30:122
184089942,2cyclictest26470-21cron20:29:592
184089942,1cyclictest774-21snmpd22:05:152
184089941,3cyclictest774-21snmpd21:00:172
184089941,3cyclictest32329-21cat22:50:162
184089941,2cyclictest0-21swapper/222:25:142
184089940,4cyclictest0-21swapper/222:30:132
184089940,4cyclictest0-21swapper/222:00:132
184089940,4cyclictest0-21swapper/221:40:142
184089940,4cyclictest0-21swapper/220:35:132
184089940,4cyclictest0-21swapper/220:20:132
184089940,4cyclictest0-21swapper/200:35:152
184089940,3cyclictest9626-21hddtemp_smartct00:15:162
184089940,3cyclictest32424-21perl19:35:162
184089940,3cyclictest23869-21sort23:40:012
184089940,3cyclictest22935-21tail19:15:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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