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2026-03-22 - 04:19
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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 rackfslot7.osadl.org (updated Sun Mar 22, 2026 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2419734991080,107cyclictest0-21swapper/522:10:165
2419733997821,38cyclictest2569193-21fschecks_time23:40:144
2419733997675,0cyclictest2474235-21munin-run20:50:004
2419733997333,39cyclictest2466977-21df_inode20:35:144
2419733997333,39cyclictest0-21swapper/400:11:384
2419733997313,59cyclictest0-21swapper/422:33:464
2419733997232,39cyclictest0-21swapper/420:09:024
2419733997232,39cyclictest0-21swapper/400:24:544
2419733997214,19cyclictest0-21swapper/423:37:504
2419733997133,19cyclictest0-21swapper/420:00:064
2419733997131,39cyclictest0-21swapper/423:21:424
2419733997131,39cyclictest0-21swapper/423:17:044
2419733997131,39cyclictest0-21swapper/420:10:124
2419733997131,39cyclictest0-21swapper/419:12:584
2419733997111,59cyclictest2593451-21http00:25:124
2419733997012,19cyclictest0-21swapper/400:04:024
2419733996930,19cyclictest0-21swapper/422:44:084
2419733996911,19cyclictest0-21swapper/423:28:224
2419733996911,19cyclictest0-21swapper/400:16:384
241973399688,59cyclictest2596152-21/usr/sbin/munin00:30:224
241973399688,39cyclictest0-21swapper/420:25:184
2419733996810,19cyclictest0-21swapper/422:47:224
241973399679,39cyclictest2478119-21expr20:55:144
241973399678,39cyclictest0-21swapper/421:10:184
241973399678,39cyclictest0-21swapper/421:10:184
241973699668,19cyclictest0-21swapper/719:50:157
2419733996462,1cyclictest2444475-21munin-run19:55:024
241973399623,39cyclictest2458501-21grep20:20:124
2419733995921,19cyclictest236199-21snmpd19:20:484
2419733995919,39cyclictest0-21swapper/419:44:374
2419733995856,0cyclictest191rcu_preempt21:58:564
2419733995820,38cyclictest0-21swapper/421:15:144
2419733995820,19cyclictest601ktimers/419:30:024
2419733995819,19cyclictest236199-21snmpd19:57:224
241973399580,39cyclictest2574476-21cstates23:50:144
241973399580,39cyclictest2552692-21/usr/sbin/munin23:10:164
241973699560,17cyclictest0-21swapper/723:45:167
2419733995637,19cyclictest2584823-21sed00:10:024
2419733995618,18cyclictest6050ktimers/421:43:304
2419733995618,18cyclictest6050ktimers/421:43:304
2419733995618,18cyclictest2436374-21munin-run19:40:024
2419733995616,19cyclictest1-21systemd23:05:124
2419733995519,35cyclictest0-21swapper/423:45:144
2419733995518,18cyclictest0-21swapper/422:55:124
2419733995514,40cyclictest0-21swapper/422:00:064
2419733995514,40cyclictest0-21swapper/421:28:504
2419733995514,40cyclictest0-21swapper/419:15:064
2419733995514,39cyclictest0-21swapper/420:41:424
2419736995414,39cyclictest0-21swapper/723:00:157
2419735995415,39cyclictest0-21swapper/622:20:166
2419733995419,35cyclictest0-21swapper/423:58:504
2419733995419,17cyclictest0-21swapper/419:46:224
2419733995419,15cyclictest0-21swapper/421:03:584
2419733995419,15cyclictest0-21swapper/419:31:544
2419733995416,38cyclictest2462324-21kworker/u32:0+flush-8:021:05:264
2419733995416,19cyclictest2456415-21cat20:15:164
2419733995415,39cyclictest0-21swapper/421:22:524
2419733995414,39cyclictest0-21swapper/422:05:064
2419733995414,21cyclictest0-21swapper/422:37:024
2419733995414,21cyclictest0-21swapper/421:52:024
2419733995414,21cyclictest0-21swapper/420:32:024
2419733995414,19cyclictest0-21swapper/423:30:304
2419733995413,40cyclictest0-21swapper/423:01:384
2419733995413,40cyclictest0-21swapper/422:53:464
2419733995413,40cyclictest0-21swapper/422:19:464
2419733995333,19cyclictest0-21swapper/421:47:364
2419733995333,19cyclictest0-21swapper/421:47:364
2419733995319,34cyclictest0-21swapper/420:52:544
2419733995319,15cyclictest0-21swapper/422:10:064
2419733995314,39cyclictest0-21swapper/422:20:504
2419733995314,19cyclictest0-21swapper/421:35:064
2419733995314,19cyclictest0-21swapper/400:35:584
2419733995313,19cyclictest0-21swapper/421:32:314
2419732995314,20cyclictest0-21swapper/300:20:163
2419734995214,38cyclictest0-21swapper/523:05:165
2419734995214,19cyclictest0-21swapper/520:10:165
2419733995233,19cyclictest0-21swapper/422:27:524
241973199520,1cyclictest0-21swapper/200:25:012
2419729995113,19cyclictest0-21swapper/019:40:150
2419729995112,39cyclictest0-21swapper/022:10:160
2419736995011,19cyclictest0-21swapper/720:40:137
2419730995011,20cyclictest0-21swapper/122:45:131
2419734994911,19cyclictest0-21swapper/521:55:165
2419730994930,19cyclictest0-21swapper/100:25:161
241973599489,19cyclictest0-21swapper/600:20:166
2419734994810,19cyclictest0-21swapper/520:15:155
241973099479,19cyclictest0-21swapper/119:20:151
241973699468,19cyclictest0-21swapper/719:30:157
2419736994527,0cyclictest0-21swapper/723:10:147
241973199457,19cyclictest0-21swapper/200:10:162
241973299446,19cyclictest2519700-21awk22:10:163
241972999434,39cyclictest171ktimers/019:30:150
241973099424,19cyclictest0-21swapper/119:30:151
241973699412,19cyclictest0-21swapper/700:20:167
241973199413,19cyclictest0-21swapper/220:30:152
241973099412,39cyclictest0-21swapper/100:30:151
241973599400,39cyclictest2442684-21awk19:50:156
241973499400,19cyclictest0-21swapper/523:04:205
241973199400,39cyclictest0-21swapper/222:50:122
241973099402,19cyclictest0-21swapper/120:35:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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