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2026-04-19 - 12:53
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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 Apr 19, 2026 00:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3007805991024,79cyclictest3071207-21apt21:05:124
3007805991024,79cyclictest3071207-21apt21:05:114
3007805999313,40cyclictest3143833-21ntpq23:15:174
300780599846,78cyclictest3155524-21chrt23:35:434
3007805997614,40cyclictest3010861-21/usr/sbin/munin19:15:184
3007805997214,39cyclictest3057733-21telnet20:40:124
3007805997113,39cyclictest0-21swapper/422:57:424
3007805997112,39cyclictest3151942-21wc23:30:184
3007805997031,39cyclictest0-21swapper/422:44:474
3007805996911,39cyclictest3178972-21cut00:20:144
300780599679,19cyclictest0-21swapper/421:12:134
300780599678,21cyclictest0-21swapper/422:26:334
300780599667,20cyclictest0-21swapper/423:44:214
3007807996526,19cyclictest0-21swapper/600:00:176
300780599657,39cyclictest3167091-21systemctl00:00:024
300780599623,40cyclictest3147953-21munin-plugin-st23:25:024
3007805995921,38cyclictest0-21swapper/419:46:294
300780599591,39cyclictest3126301-21/usr/sbin/munin22:45:124
3007805995837,18cyclictest0-21swapper/400:27:514
3007805995820,38cyclictest0-21swapper/419:50:044
3007807995719,19cyclictest0-21swapper/620:30:146
3007805995719,38cyclictest0-21swapper/420:05:244
3007805995719,18cyclictest0-21swapper/423:45:484
3007805995638,18cyclictest873-21mta-sts-daemon00:15:074
3007807995536,19cyclictest0-21swapper/619:50:166
3007805995518,19cyclictest3089086-21ntp_states21:35:204
3007805995514,40cyclictest0-21swapper/423:08:414
3007805995514,40cyclictest0-21swapper/423:03:214
3007805995419,35cyclictest0-21swapper/422:52:274
3007805995419,35cyclictest0-21swapper/422:12:164
3007805995419,15cyclictest0-21swapper/421:54:114
3007805995419,15cyclictest0-21swapper/419:32:164
3007805995419,15cyclictest0-21swapper/400:37:394
3007805995414,40cyclictest0-21swapper/420:24:064
3007805995414,22cyclictest0-21swapper/420:32:184
3007805995414,21cyclictest0-21swapper/420:25:334
3007805995414,20cyclictest0-21swapper/419:39:234
3007805995413,40cyclictest0-21swapper/423:25:054
3007805995319,15cyclictest0-21swapper/400:06:324
3007805995318,15cyclictest0-21swapper/421:45:084
3007805995314,39cyclictest0-21swapper/423:10:044
3007805995314,39cyclictest0-21swapper/422:19:054
3007805995314,39cyclictest0-21swapper/422:09:214
3007805995314,39cyclictest0-21swapper/422:01:104
3007805995314,39cyclictest0-21swapper/421:30:094
3007805995314,39cyclictest0-21swapper/421:29:064
3007805995314,39cyclictest0-21swapper/421:21:394
3007805995314,39cyclictest0-21swapper/421:00:464
3007805995314,39cyclictest0-21swapper/421:00:454
3007805995314,39cyclictest0-21swapper/420:57:134
3007805995314,39cyclictest0-21swapper/420:38:574
3007805995314,39cyclictest0-21swapper/420:04:564
3007805995314,39cyclictest0-21swapper/419:10:474
3007805995314,39cyclictest0-21swapper/400:10:294
3007805995314,19cyclictest0-21swapper/420:11:264
3007805995313,40cyclictest0-21swapper/422:22:504
3007805995313,40cyclictest0-21swapper/420:51:064
3007805995313,40cyclictest0-21swapper/420:51:054
3007805995313,40cyclictest0-21swapper/400:34:184
3007805995313,23cyclictest0-21swapper/421:55:344
3007805995313,20cyclictest0-21swapper/421:16:464
3007805995313,19cyclictest0-21swapper/422:31:464
3007805995312,40cyclictest0-21swapper/419:41:464
3007808995214,19cyclictest0-21swapper/700:30:177
3007805995233,19cyclictest0-21swapper/423:53:114
3007805995233,19cyclictest0-21swapper/420:47:284
3007805995233,19cyclictest0-21swapper/420:18:404
3007805995233,19cyclictest0-21swapper/419:20:334
3007805995233,19cyclictest0-21swapper/400:02:154
3007805995213,39cyclictest0-21swapper/422:37:444
3007805995213,39cyclictest0-21swapper/421:42:154
3007805995213,39cyclictest0-21swapper/419:28:274
3007805995212,20cyclictest0-21swapper/419:55:354
3007803995112,19cyclictest0-21swapper/223:50:172
300780899479,19cyclictest0-21swapper/721:45:167
300780799446,19cyclictest0-21swapper/623:55:176
3007807994425,19cyclictest0-21swapper/621:00:136
3007807994425,19cyclictest0-21swapper/621:00:126
300780299435,19cyclictest0-21swapper/119:10:151
3007803994223,19cyclictest0-21swapper/221:15:152
300780299422,39cyclictest0-21swapper/100:20:141
3007802994223,19cyclictest0-21swapper/120:00:171
300780199424,19cyclictest0-21swapper/023:35:160
300780199424,19cyclictest0-21swapper/020:10:150
3007801994223,19cyclictest221rcuc/020:35:180
300780799412,39cyclictest0-21swapper/619:55:146
300780399413,19cyclictest0-21swapper/200:25:182
300780299413,19cyclictest0-21swapper/123:10:151
300780799390,39cyclictest0-21swapper/622:25:166
3007806993920,19cyclictest0-21swapper/521:10:165
300780399390,39cyclictest0-21swapper/220:55:172
300780299390,20cyclictest0-21swapper/100:30:171
3007807993819,0cyclictest79-21ksoftirqd/620:50:166
3007807993819,0cyclictest79-21ksoftirqd/620:50:156
300780699380,19cyclictest0-21swapper/500:15:155
300780399380,38cyclictest0-21swapper/220:30:142
3007801993819,19cyclictest171ktimers/019:30:160
300780199380,19cyclictest16-21ksoftirqd/021:45:160
300780199380,19cyclictest0-21swapper/020:30:130
300780799370,18cyclictest0-21swapper/623:45:206
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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