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2026-05-10 - 22:17
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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 May 10, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
181867099161159,1cyclictest0-21swapper/108:25:021
1818673999191,0cyclictest0-21swapper/412:25:154
1818673998324,19cyclictest191rcu_preempt07:20:134
181867399824,59cyclictest1858490-21ld08:20:204
1818673997736,20cyclictest1876857-21kworker/u32:5+events_unbound09:20:074
181867399770,58cyclictest1931750-21kworker/u32:4+events_unbound10:39:014
1818673997557,0cyclictest0-21swapper/410:27:264
1818673997556,19cyclictest601ktimers/409:39:044
1818673997517,39cyclictest1911821-21chrt09:58:544
1818673997335,38cyclictest601ktimers/408:39:344
1818673997315,39cyclictest13011-21kworker/u32:2+events_unbound07:25:504
1818673997133,38cyclictest0-21swapper/410:46:164
1818673997133,38cyclictest0-21swapper/410:46:154
1818673997133,18cyclictest0-21swapper/410:33:404
1818673996868,0cyclictest0-21swapper/412:35:014
1818672996811,18cyclictest0-21swapper/311:35:163
1818673996729,19cyclictest236199-21snmpd11:36:574
1818673996729,19cyclictest1905382-21ntpq09:45:184
181867399646,39cyclictest1987902-21/usr/sbin/munin12:15:144
1818673996425,39cyclictest1908176-21gcc09:50:174
1818673996325,19cyclictest1969299-21ntpq11:40:204
1818673996223,39cyclictest0-21swapper/410:08:384
1818673996122,19cyclictest0-21swapper/412:10:384
1818673996020,20cyclictest6050ktimers/410:40:364
1818673995921,19cyclictest1978466-21sshd11:59:544
181867399590,40cyclictest1979806-21awk12:00:144
181867499580,39cyclictest70-21ksoftirqd/512:05:145
1818673995820,19cyclictest1879047-21taskset08:58:564
1818673995820,19cyclictest0-21swapper/409:31:224
1818673995719,19cyclictest1880799-21ntpq09:00:204
181867399560,56cyclictest1848272-21kworker/u32:1+events_unbound08:07:494
1818674995536,19cyclictest0-21swapper/509:15:165
1818673995537,18cyclictest61-21ksoftirqd/408:27:104
1818673995519,16cyclictest0-21swapper/407:50:264
1818673995515,20cyclictest1782057-21kworker/u32:4+events_unbound09:19:134
1818671995517,18cyclictest1818668-21cyclictest08:10:172
1818673995436,18cyclictest0-21swapper/410:12:054
1818673995435,19cyclictest1913426-21lpstat10:00:174
1818673995419,35cyclictest0-21swapper/412:37:324
1818673995419,35cyclictest0-21swapper/411:31:244
1818673995419,35cyclictest0-21swapper/411:20:404
1818673995419,35cyclictest0-21swapper/410:55:524
1818673995419,35cyclictest0-21swapper/409:08:164
1818673995419,35cyclictest0-21swapper/407:11:244
1818673995419,15cyclictest0-21swapper/412:20:274
1818673995419,15cyclictest0-21swapper/411:52:404
1818673995419,15cyclictest0-21swapper/410:22:004
1818673995419,15cyclictest0-21swapper/408:41:274
1818673995419,15cyclictest0-21swapper/408:14:524
1818673995419,15cyclictest0-21swapper/407:16:444
181867399540,34cyclictest0-21swapper/409:43:164
1818673995335,18cyclictest1824470-21kworker/u32:5+flush-8:007:44:064
1818673995334,19cyclictest3660912-21munin-node12:07:164
1818673995319,34cyclictest0-21swapper/407:36:444
1818673995319,15cyclictest0-21swapper/410:52:204
1818673995319,15cyclictest0-21swapper/410:52:194
1818673995319,15cyclictest0-21swapper/410:16:364
1818673995319,15cyclictest0-21swapper/408:15:484
1818673995318,15cyclictest0-21swapper/411:13:074
1818673995314,39cyclictest1782057-21kworker/u32:4+events_unbound07:59:254
1818673995314,39cyclictest0-21swapper/411:26:274
1818673995314,39cyclictest0-21swapper/411:06:044
1818673995314,39cyclictest0-21swapper/411:02:074
1818673995314,39cyclictest0-21swapper/408:34:154
1818673995314,39cyclictest0-21swapper/407:46:084
1818673995314,39cyclictest0-21swapper/407:31:284
1818669995318,35cyclictest0-21swapper/009:20:160
1818669995315,19cyclictest0-21swapper/011:35:160
1818669995311,19cyclictest0-21swapper/007:10:150
1818674995214,19cyclictest0-21swapper/507:30:155
1818673995233,19cyclictest0-21swapper/409:12:044
1818673995233,19cyclictest0-21swapper/408:52:234
1818673995218,34cyclictest0-21swapper/411:15:404
1818673995133,18cyclictest0-21swapper/411:49:114
1818673995133,0cyclictest0-21swapper/408:02:444
1818672995113,19cyclictest0-21swapper/307:20:163
1818669995113,19cyclictest0-21swapper/011:30:170
1818671995012,19cyclictest0-21swapper/212:35:152
1818671995012,19cyclictest0-21swapper/211:05:152
1818670995031,19cyclictest0-21swapper/111:20:141
1818676994910,39cyclictest0-21swapper/707:50:197
1818669994911,19cyclictest0-21swapper/007:55:160
1818671994829,19cyclictest0-21swapper/210:45:162
1818671994829,19cyclictest0-21swapper/210:45:162
1818671994811,18cyclictest0-21swapper/211:25:172
1818674994728,19cyclictest0-21swapper/508:55:185
1818671994729,18cyclictest0-21swapper/211:10:152
181866999477,39cyclictest0-21swapper/011:05:160
181867499466,39cyclictest70-21ksoftirqd/508:25:155
181867099468,19cyclictest0-21swapper/109:10:141
1818669994628,0cyclictest0-21swapper/011:25:150
181867699457,19cyclictest0-21swapper/708:00:167
1818676994426,18cyclictest0-21swapper/707:45:157
1818676994426,0cyclictest0-21swapper/711:35:157
181867499446,19cyclictest0-21swapper/508:05:165
1818673994426,18cyclictest0-21swapper/409:26:214
1818673994325,18cyclictest0-21swapper/408:47:184
1818669994324,19cyclictest171ktimers/012:25:150
181867199424,19cyclictest0-21swapper/208:00:152
181867699413,19cyclictest0-21swapper/710:35:167
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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