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2026-03-12 - 08:17
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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 Thu Mar 12, 2026 00:46:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2627317995315,19cyclictest0-21swapper/220:30:132
2627316994912,18cyclictest0-21swapper/119:50:161
2627316994912,18cyclictest0-21swapper/119:50:161
262731799478,19cyclictest0-21swapper/200:15:162
2627319994645,1cyclictest2683430-21basename20:50:124
2627319994628,18cyclictest0-21swapper/419:52:504
2627319994628,18cyclictest0-21swapper/419:52:504
262731799468,19cyclictest0-21swapper/200:25:182
262731799468,19cyclictest0-21swapper/200:25:182
262731799457,19cyclictest0-21swapper/220:25:162
262732199434,39cyclictest0-21swapper/620:05:156
262732199434,39cyclictest0-21swapper/620:05:156
2627320994222,19cyclictest876-21mta-sts-daemon21:40:175
2627319994242,0cyclictest0-21swapper/422:00:204
2627319994241,1cyclictest2679267-21mailstats20:40:204
2627319994221,20cyclictest2655727-21kworker/u32:5+flush-8:020:10:204
2627319994221,20cyclictest2655727-21kworker/u32:5+flush-8:020:10:204
262731599424,19cyclictest0-21swapper/022:55:140
262732099412,19cyclictest0-21swapper/522:45:165
262731999412,39cyclictest0-21swapper/422:09:224
262731999412,39cyclictest0-21swapper/421:01:544
2627319994121,19cyclictest601ktimers/421:37:544
2627319994121,19cyclictest2722126-21sed22:00:024
2627319994121,19cyclictest2714333-21diskstats21:45:144
262731999411,39cyclictest0-21swapper/423:55:024
262731999411,39cyclictest0-21swapper/422:22:584
262731799413,19cyclictest0-21swapper/223:45:182
262731799413,19cyclictest0-21swapper/219:50:162
262731799413,19cyclictest0-21swapper/219:50:162
2627319994040,0cyclictest0-21swapper/421:25:164
2627319994040,0cyclictest0-21swapper/400:10:204
2627319994040,0cyclictest0-21swapper/400:10:194
2627319994021,0cyclictest0-21swapper/422:58:324
2627319994018,21cyclictest2635926-21perf19:25:004
262731999401,39cyclictest0-21swapper/423:27:254
262731999401,39cyclictest0-21swapper/420:38:434
262731999401,39cyclictest0-21swapper/420:07:524
262731999401,39cyclictest0-21swapper/420:07:524
262731999401,39cyclictest0-21swapper/400:33:564
262731999401,39cyclictest0-21swapper/400:33:564
262731999401,39cyclictest0-21swapper/400:25:064
262731999401,39cyclictest0-21swapper/400:25:064
262731999401,39cyclictest0-21swapper/400:20:504
262731999401,39cyclictest0-21swapper/400:05:104
262731999401,19cyclictest2762746-21perf23:19:504
262731999400,39cyclictest0-21swapper/422:50:114
262731999400,39cyclictest0-21swapper/421:17:344
262731999400,39cyclictest0-21swapper/420:26:184
262731999400,39cyclictest0-21swapper/400:02:294
262731799402,19cyclictest0-21swapper/222:30:152
262731799400,39cyclictest0-21swapper/222:50:122
2627321993921,18cyclictest0-21swapper/623:55:156
2627319993938,1cyclictest601ktimers/419:16:514
2627319993938,1cyclictest2641169-21chrt19:32:244
2627319993920,19cyclictest601ktimers/423:42:544
2627319993919,19cyclictest0-21swapper/419:40:204
2627319993919,19cyclictest0-21swapper/419:40:204
262731999390,39cyclictest0-21swapper/423:38:134
262731999390,39cyclictest0-21swapper/423:22:424
262731999390,39cyclictest0-21swapper/421:32:014
262731999390,38cyclictest0-21swapper/422:44:304
262731999390,38cyclictest0-21swapper/420:16:384
262731599392,18cyclictest0-21swapper/022:40:160
2627319993838,0cyclictest2781402-21lpstat23:45:204
262731999380,38cyclictest0-21swapper/422:39:284
262731999380,37cyclictest0-21swapper/422:49:284
262731999380,37cyclictest0-21swapper/420:55:324
262731999380,37cyclictest0-21swapper/420:49:074
262731999380,37cyclictest0-21swapper/400:39:564
262731999380,19cyclictest0-21swapper/423:10:144
262732099370,18cyclictest0-21swapper/521:05:165
2627319993736,0cyclictest2732716-21latency_hist22:20:024
2627319993718,19cyclictest601ktimers/423:04:344
2627319993718,19cyclictest2759028-21ntpq23:05:204
2627319993718,19cyclictest0-21swapper/421:44:424
2627319993716,21cyclictest236199-21snmpd23:50:544
262731999370,37cyclictest0-21swapper/422:33:364
262731999370,37cyclictest0-21swapper/422:10:284
262731999370,37cyclictest0-21swapper/400:17:094
262731999370,36cyclictest0-21swapper/420:31:564
262731999370,36cyclictest0-21swapper/420:21:124
262731999370,36cyclictest0-21swapper/419:29:514
262731999370,18cyclictest2656931-21ntpq20:00:204
262731999370,18cyclictest2656931-21ntpq20:00:204
262731799370,18cyclictest0-21swapper/222:40:162
2627319993614,19cyclictest0-21swapper/421:07:264
262731999360,36cyclictest0-21swapper/423:33:064
262731999360,36cyclictest0-21swapper/419:45:364
262731999360,35cyclictest0-21swapper/421:50:064
262731999360,35cyclictest0-21swapper/421:22:554
2627317993619,17cyclictest0-21swapper/219:55:152
2627317993619,17cyclictest0-21swapper/219:55:152
262732099350,15cyclictest0-21swapper/522:00:165
262732099350,15cyclictest0-21swapper/519:30:155
262731999350,35cyclictest0-21swapper/422:25:384
262731999350,35cyclictest0-21swapper/421:10:304
262731999350,15cyclictest0-21swapper/419:56:384
262731999350,15cyclictest0-21swapper/419:56:374
262731999350,15cyclictest0-21swapper/419:35:084
262731999350,15cyclictest0-21swapper/419:10:264
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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