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2025-04-02 - 08:10
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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 50 highest latencies:
System rackbslot7.osadl.org (updated Wed Apr 02, 2025 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
232049912757,58cyclictest0-21swapper/019:42:180
232339911053,50cyclictest28585-21latency_hist23:02:203
2321299952,47cyclictest6980-21apt-get23:22:331
2322499943,56cyclictest15257-21df_inode22:38:232
216982926,14sleep30-21swapper/319:02:283
23224999017,41cyclictest26293-21munin-run23:57:192
2322499893,58cyclictest16055-21apt-get20:27:332
2322499893,58cyclictest16055-21apt-get20:27:332
23212998729,10cyclictest23042-21fschecks_count22:52:401
23212998322,14cyclictest15768-21fschecks_count23:37:381
23224998121,30cyclictest402-21runrttasks00:07:172
23212998121,12cyclictest0-21swapper/119:12:421
23212998022,10cyclictest0-21swapper/119:37:371
23212998017,11cyclictest0-21swapper/122:02:221
23224997925,24cyclictest0-21swapper/223:39:502
23212997923,50cyclictest0-21swapper/120:53:321
23212997914,19cyclictest5079-21latency_hist00:17:221
23212997914,13cyclictest0-21swapper/121:17:421
23212997816,11cyclictest0-21swapper/123:07:211
23212997816,11cyclictest0-21swapper/123:07:211
23204997857,13cyclictest5837-21latency_hist21:22:210
23212997753,14cyclictest15385-21ssh22:38:291
2321299763,31cyclictest11007-21grep20:08:211
23212997628,40cyclictest0-21swapper/121:52:501
23212997626,45cyclictest8066-1kworker/1:1H22:07:221
23204997640,8cyclictest0-21swapper/023:57:200
42282750,5sleep20-21swapper/200:15:342
23233997555,12cyclictest0-21swapper/323:27:183
23224997524,27cyclictest21941-21cut21:52:232
23224997524,27cyclictest21941-21cut21:52:232
23212997521,11cyclictest0-21swapper/123:17:431
23224997454,8cyclictest9552-21kworker/u8:220:22:332
23224997428,18cyclictest1897-21sh00:12:082
23212997429,8cyclictest0-21swapper/123:52:461
23224997346,17cyclictest25702-21latency_hist22:57:212
23224997342,21cyclictest20105-21/usr/sbin/munin22:47:372
23212997352,13cyclictest29340-21sh21:07:221
23212997316,12cyclictest0-21swapper/121:24:541
23212997316,12cyclictest0-21swapper/121:24:541
2195027326,23sleep20-21swapper/219:02:472
23233997226,14cyclictest41-21ksoftirqd/322:07:533
23233997226,14cyclictest41-21ksoftirqd/322:07:533
23224997247,17cyclictest8574-21ssh23:25:302
23212997222,7cyclictest0-21swapper/123:15:181
23212997217,11cyclictest0-21swapper/123:44:331
23212997216,11cyclictest0-21swapper/100:07:371
23233997154,10cyclictest14660-21gpgv22:37:223
23233997125,13cyclictest41-21ksoftirqd/300:12:423
23224997146,18cyclictest15128-21date00:37:332
23224997140,23cyclictest28951-21fschecks_time19:22:412
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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