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2026-04-20 - 13:34
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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 Mon Apr 20, 2026 00:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18838998123,39cyclictest129145-21perf22:34:504
18838997638,19cyclictest236199-21snmpd23:02:324
18838997436,19cyclictest413-21systemd-journal00:05:024
18838997416,39cyclictest142586-21sshd22:51:544
18838997314,39cyclictest50209-21df20:05:144
18838997214,19cyclictest72250-21cat20:45:174
18838997133,38cyclictest601ktimers/422:56:234
18838997133,38cyclictest0-21swapper/421:01:064
18838996931,38cyclictest0-21swapper/423:24:114
18838996931,38cyclictest0-21swapper/423:24:104
1883899668,39cyclictest193160-21sed00:25:024
18838996628,19cyclictest155086-21/usr/sbin/munin23:15:164
18838996427,18cyclictest601ktimers/421:50:124
1883899635,19cyclictest134603-21munin-run22:40:004
1883999624,19cyclictest0-21swapper/523:05:165
18838996222,39cyclictest0-21swapper/420:14:564
18838996122,39cyclictest0-21swapper/400:35:574
18838995922,18cyclictest42671-21gzip19:50:224
18841995858,0cyclictest0-21swapper/700:25:197
18838995839,19cyclictest601ktimers/420:24:384
18838995820,19cyclictest193521-21cpuspeed_turbos00:25:174
18838995819,39cyclictest0-21swapper/422:04:284
18838995819,39cyclictest0-21swapper/419:19:414
18838995818,39cyclictest36600-21memory19:40:194
18838995719,19cyclictest33454-21hddtemp_smartct19:35:144
18838995719,19cyclictest122155-21if_eno522:15:164
18838995419,15cyclictest0-21swapper/423:53:434
18838995419,15cyclictest0-21swapper/423:32:524
18838995418,36cyclictest0-21swapper/420:53:344
18838995418,16cyclictest0-21swapper/419:24:304
18838995416,19cyclictest186917-21users00:10:244
18838995414,39cyclictest0-21swapper/423:07:004
1883899540,35cyclictest166680-21switchtime23:35:244
18838995333,19cyclictest0-21swapper/420:02:024
18838995319,34cyclictest0-21swapper/420:31:184
18838995319,15cyclictest0-21swapper/421:28:264
18838995319,15cyclictest0-21swapper/419:34:184
18838995319,14cyclictest0-21swapper/420:15:224
18838995314,39cyclictest0-21swapper/423:40:064
18838995314,39cyclictest0-21swapper/423:40:064
18838995314,39cyclictest0-21swapper/421:15:464
18838995314,19cyclictest0-21swapper/421:36:584
18838995313,39cyclictest0-21swapper/423:29:204
18838995313,39cyclictest0-21swapper/423:29:204
18838995313,39cyclictest0-21swapper/422:45:184
18838995313,39cyclictest0-21swapper/419:46:264
18834995314,38cyclictest0-21swapper/022:40:170
18838995233,19cyclictest0-21swapper/420:27:184
18838995233,19cyclictest0-21swapper/400:30:384
18838995233,18cyclictest0-21swapper/420:44:344
18838995233,0cyclictest0-21swapper/423:11:024
18838995232,19cyclictest0-21swapper/423:59:224
18838995232,19cyclictest0-21swapper/421:21:474
18838995232,19cyclictest0-21swapper/420:59:344
18838995232,19cyclictest0-21swapper/420:39:544
18838995232,19cyclictest0-21swapper/419:11:104
18838995219,14cyclictest0-21swapper/423:46:064
18838995213,19cyclictest0-21swapper/421:30:384
18838995212,39cyclictest0-21swapper/422:42:224
18836995252,0cyclictest0-21swapper/223:35:202
18838995133,18cyclictest0-21swapper/421:59:144
18838995133,18cyclictest0-21swapper/400:19:344
18838995132,19cyclictest0-21swapper/422:27:504
18838995132,19cyclictest0-21swapper/422:07:144
18838995113,19cyclictest0-21swapper/422:13:114
18839995010,39cyclictest0-21swapper/523:40:165
18839995010,39cyclictest0-21swapper/523:40:155
18838995032,18cyclictest0-21swapper/421:49:434
18838995032,18cyclictest0-21swapper/421:11:074
18838995032,18cyclictest0-21swapper/421:08:304
18838995032,18cyclictest0-21swapper/400:01:304
18838995031,19cyclictest0-21swapper/422:23:144
18838995031,19cyclictest0-21swapper/419:29:424
18838995030,19cyclictest0-21swapper/421:40:464
18838995011,39cyclictest0-21swapper/419:57:384
18834995012,19cyclictest0-21swapper/022:30:160
18841994910,39cyclictest0-21swapper/720:35:187
18835994910,39cyclictest0-21swapper/119:15:151
18839994810,19cyclictest0-21swapper/520:30:185
1883599479,19cyclictest0-21swapper/120:40:161
1883599477,40cyclictest0-21swapper/100:00:171
1883599456,20cyclictest0-21swapper/100:10:161
1883499456,39cyclictest0-21swapper/022:10:160
1884199445,39cyclictest0-21swapper/723:40:167
1884199445,39cyclictest0-21swapper/723:40:157
1883499446,38cyclictest0-21swapper/019:40:160
1883499446,19cyclictest0-21swapper/019:35:150
1883999436,18cyclictest0-21swapper/522:45:155
1883999434,39cyclictest0-21swapper/522:55:165
1883499435,19cyclictest0-21swapper/020:05:160
1883499435,19cyclictest0-21swapper/000:05:170
1884199424,19cyclictest0-21swapper/700:35:177
1884099423,19cyclictest0-21swapper/619:30:166
1883599411,39cyclictest0-21swapper/121:55:171
1884099402,19cyclictest0-21swapper/622:55:166
18841993939,0cyclictest0-21swapper/700:01:377
1884199390,20cyclictest0-21swapper/722:20:177
1883499390,39cyclictest0-21swapper/021:00:190
1883999380,19cyclictest0-21swapper/520:50:165
1883599380,38cyclictest0-21swapper/121:10:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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