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2025-12-17 - 08:44
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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 Wed Dec 17, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
204672203187,11sleep10-21swapper/119:07:321
184392186170,11sleep30-21swapper/319:05:093
205482178160,13sleep00-21swapper/019:08:360
205652173158,11sleep20-21swapper/219:08:492
219222470,0sleep00-21swapper/019:10:160
208429996,2cyclictest24049-21apt-get22:30:113
208429994,4cyclictest14295-21apt-get23:15:123
208429986,2cyclictest32037-21apt-get23:50:113
208429986,1cyclictest12182-21apt-get00:15:093
208429985,2cyclictest4758-21apt-get00:00:013
208429985,2cyclictest4195-21apt-get22:55:113
208429985,2cyclictest1293-21idleruntime-cro22:50:013
208429983,3cyclictest2616-21smartctl21:45:153
208289981,3cyclictest4323-21apt-get00:00:000
208429975,2cyclictest26672-21apt-get19:20:113
208429975,2cyclictest26672-21apt-get19:20:113
208429975,2cyclictest26344-21munin-run21:30:023
208429975,2cyclictest20948-21apt-get19:10:113
208429975,2cyclictest19617-21apt-get00:30:123
208429975,2cyclictest0-21swapper/319:15:113
208429975,1cyclictest24339-21apt-get20:20:023
208429974,3cyclictest4327-21ls00:00:003
208429974,2cyclictest9954-21perl19:50:143
208429974,2cyclictest9404-21tr20:55:133
208429974,2cyclictest7494-21tr00:05:123
208429974,2cyclictest5046-21fschecks_time19:40:143
208429974,2cyclictest3128-21ntp_states19:35:203
208429974,2cyclictest31249-21dump-pmu-power22:45:013
208429974,2cyclictest29680-21/usr/sbin/munin19:25:143
208429974,2cyclictest27441-21awk22:35:153
208429974,2cyclictest25868-21/usr/sbin/munin23:35:163
208429974,2cyclictest22985-21cut20:15:193
208429974,2cyclictest19103-21apt-get22:20:133
208429974,2cyclictest18471-21grep21:10:213
208429974,2cyclictest17972-21cat20:05:173
208429974,2cyclictest14880-21perl22:10:143
208429974,2cyclictest13045-21/usr/sbin/munin19:55:163
208429973,4cyclictest23609-21python00:35:203
208429973,3cyclictest235052sleep322:26:103
208429973,3cyclictest0-21swapper/300:10:123
208429973,1cyclictest12246-21df21:00:143
208429972,3cyclictest2662-21chrt20:40:173
208289971,3cyclictest13981-21perf21:05:020
208429965,1cyclictest29298-21cpuspeed21:35:143
208429965,1cyclictest27099-21apt-get23:40:113
208429965,1cyclictest19182-21apt-get20:10:133
208429965,1cyclictest16785-21apt-get23:20:113
208429965,1cyclictest16610-21apt-get22:15:113
208429964,2cyclictest8329-21wc20:50:203
208429964,2cyclictest7522-21grep21:55:153
208429964,2cyclictest663-21cat21:40:203
208429964,2cyclictest4693-21expr20:45:113
208429964,2cyclictest31980-21/usr/sbin/munin19:30:113
208429964,2cyclictest30810-21ntpq23:45:173
208429964,2cyclictest29318-21wget20:30:113
208429964,2cyclictest27721-21/usr/sbin/munin21:30:183
208429964,2cyclictest27541-21tune2fs20:25:133
208429964,2cyclictest22204-21wc23:30:133
208429964,2cyclictest21376-21systemctl21:20:013
208429964,2cyclictest19297-21/usr/sbin/munin23:25:113
208429964,2cyclictest15206-21diskstats00:20:133
208429964,2cyclictest0-21swapper/323:00:123
208429964,2cyclictest0-21swapper/321:20:123
208429964,1cyclictest17147-21apt-get00:25:113
208429964,1cyclictest0-21swapper/322:50:113
208429963,3cyclictest14743-21expr20:00:123
208429963,2cyclictest91492sleep323:05:103
208429963,2cyclictest6802-21seq19:45:023
208429963,2cyclictest31873-21/usr/sbin/munin20:35:103
208429963,2cyclictest14803-21fschecks_count21:05:133
208429963,2cyclictest11620-21seq23:10:113
208429962,4cyclictest0-21swapper/321:50:133
208429960,1cyclictest9721-21df22:00:133
208379960,5cyclictest11486-21munin-run21:00:012
208339961,2cyclictest0-21swapper/122:25:121
208339960,5cyclictest0-21swapper/123:55:111
208339960,5cyclictest0-21swapper/120:30:111
208289960,3cyclictest21446-21perf20:15:000
208429953,2cyclictest11679-21/usr/sbin/munin22:05:133
208379951,1cyclictest0-21swapper/220:20:122
208379950,5cyclictest0-21swapper/200:25:112
208379950,4cyclictest24591-21apt-get23:35:012
208339952,3cyclictest0-21swapper/122:10:111
208339950,5cyclictest0-21swapper/123:05:111
208339950,5cyclictest0-21swapper/121:45:181
208339950,4cyclictest9852sleep122:46:181
208339950,4cyclictest985-21chrt21:40:411
208339950,4cyclictest9709-21chrt00:10:081
208339950,4cyclictest9148-21chrt00:05:571
208339950,4cyclictest86922sleep119:45:351
208339950,4cyclictest8604-21chrt21:55:461
208339950,4cyclictest62022chrt22:57:151
208339950,4cyclictest3788-21chrt19:36:141
208339950,4cyclictest31438-21chrt23:45:301
208339950,4cyclictest31122-21chrt19:26:541
208339950,4cyclictest29037-21chrt23:41:221
208339950,4cyclictest28732-21chrt20:25:581
208339950,4cyclictest26528-21taskset23:36:101
208339950,4cyclictest260312sleep122:31:571
208339950,4cyclictest259612sleep121:25:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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