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2025-12-06 - 10:06
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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 Sat Dec 06, 2025 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3444932998648,20cyclictest3504231-21pluginstate20:55:011
3444932998527,39cyclictest3507073-21latency_hist21:00:011
3444932997234,19cyclictest3624824-21/usr/sbin/munin00:25:221
3444932996910,40cyclictest3606658-21latency_hist23:55:011
344493299657,39cyclictest3555781-21kworker/u32:1+events_unbound22:25:321
344493299657,39cyclictest3553618-21/usr/sbin/munin22:20:191
3444932996527,38cyclictest0-21swapper/123:45:131
3444932996527,19cyclictest3618064-21find00:15:111
344493299644,59cyclictest3499513-21cat20:45:131
3444932996426,19cyclictest3462461-21cpuspeed_turbos19:40:131
344493299635,39cyclictest3453686-21kworker/u32:2+events_unbound19:58:321
3444932996259,3cyclictest1088-21runrttasks21:06:221
344493299624,39cyclictest3587172-21kworker/u32:5+events_unbound00:39:561
344493299624,39cyclictest3560796-21kworker/u32:0+events_unbound22:38:081
344493299623,58cyclictest3621066-21kworker/u32:2+events_unbound00:23:091
344493299613,39cyclictest3584085-21kworker/u32:2+events_unbound23:36:551
344493299613,39cyclictest3487373-21kworker/u32:5+events_unbound21:51:581
344493299602,39cyclictest3462115-21kworker/u32:0+events_unbound20:23:461
344493299602,39cyclictest0-21swapper/122:45:211
344493299602,39cyclictest0-21swapper/122:45:211
344493299591,39cyclictest3560796-21kworker/u32:0+events_unbound22:50:451
3444932995819,39cyclictest331ktimers/123:16:271
344493299580,39cyclictest3525683-21gcc21:30:201
344493299580,38cyclictest3447994-21systemd-run19:15:031
3444932995738,19cyclictest0-21swapper/120:00:191
3444932995618,19cyclictest3456363-21cut19:30:021
3444932995613,40cyclictest874-21mta-sts-daemon20:43:591
3444935995538,0cyclictest0-21swapper/400:10:164
3444932995532,19cyclictest0-21swapper/123:14:111
3444932995518,37cyclictest0-21swapper/123:08:041
3444932995517,38cyclictest3450808-21munin-run19:20:021
3444932995517,19cyclictest3558568-21date22:30:011
3444932995435,19cyclictest3508655-21ntp_states21:00:211
3444932995416,38cyclictest0-21swapper/100:10:151
3444932995416,19cyclictest3544795-21cat22:05:141
3444932995416,19cyclictest3470371-21munin-run19:55:011
3444932995415,19cyclictest3615108-21sed00:10:011
3444932995414,39cyclictest0-21swapper/123:34:591
3444932995412,19cyclictest0-21swapper/121:37:471
3444938995314,38cyclictest0-21swapper/720:50:177
3444935995317,18cyclictest601ktimers/421:05:184
3444932995330,19cyclictest0-21swapper/120:16:271
3444932995319,15cyclictest0-21swapper/120:11:101
3444932995314,39cyclictest0-21swapper/121:47:571
3444932995314,39cyclictest0-21swapper/121:21:391
3444932995314,39cyclictest0-21swapper/121:17:291
3444932995314,39cyclictest0-21swapper/120:32:201
3444932995314,39cyclictest0-21swapper/119:35:501
3444932995314,19cyclictest0-21swapper/123:56:051
3444932995314,19cyclictest0-21swapper/122:43:311
3444937995233,19cyclictest0-21swapper/600:05:176
3444937995214,19cyclictest0-21swapper/623:20:196
3444937995213,39cyclictest0-21swapper/619:10:176
3444937995213,19cyclictest0-21swapper/620:35:156
3444932995218,15cyclictest0-21swapper/123:22:531
3444932995218,15cyclictest0-21swapper/122:11:451
3444932995218,15cyclictest0-21swapper/122:01:511
3444932995215,19cyclictest3539766-21kworker/u32:421:55:151
3444932995214,38cyclictest0-21swapper/100:30:331
3444932995214,19cyclictest1089-21snmpd23:40:271
3444932995214,19cyclictest0-21swapper/119:32:231
3444932995214,19cyclictest0-21swapper/119:23:471
3444932995213,39cyclictest0-21swapper/120:36:551
3444932995213,20cyclictest0-21swapper/121:26:351
3444935995132,19cyclictest0-21swapper/420:05:144
3444933995114,18cyclictest0-21swapper/223:10:152
3444933995113,19cyclictest0-21swapper/200:35:172
3444932995133,18cyclictest0-21swapper/119:46:041
3444932995133,18cyclictest0-21swapper/100:01:541
3444932995114,18cyclictest3591614-21switchtime23:25:251
3444932995113,19cyclictest0-21swapper/121:42:121
3444932995113,19cyclictest0-21swapper/120:06:271
3444936995032,18cyclictest0-21swapper/500:28:565
3444936995031,19cyclictest0-21swapper/520:04:375
3444936995012,38cyclictest0-21swapper/519:50:165
3444933995012,19cyclictest0-21swapper/223:20:182
3444936994847,0cyclictest0-21swapper/519:20:165
3444933994829,19cyclictest0-21swapper/223:35:192
344493299478,39cyclictest0-21swapper/123:02:011
344493299478,39cyclictest0-21swapper/122:55:341
3444932994729,18cyclictest0-21swapper/122:15:221
3444932994728,19cyclictest0-21swapper/121:14:251
344493799468,19cyclictest0-21swapper/622:25:206
344493599468,38cyclictest0-21swapper/423:40:164
344493599457,19cyclictest0-21swapper/400:20:154
3444932994526,19cyclictest0-21swapper/120:29:371
344493699435,19cyclictest0-21swapper/500:30:205
344493499435,19cyclictest0-21swapper/322:40:203
344493899402,19cyclictest0-21swapper/700:05:167
3444937994040,0cyclictest0-21swapper/623:25:256
344493199390,39cyclictest0-21swapper/000:25:190
3444936993837,1cyclictest681rcuc/520:45:135
3444936993819,19cyclictest0-21swapper/522:55:175
3444938993719,18cyclictest876-21mta-sts-daemon19:15:167
3444936993720,17cyclictest0-21swapper/523:50:145
3444936993718,19cyclictest0-21swapper/520:10:205
344493399370,37cyclictest0-21swapper/222:20:202
3444935993615,20cyclictest0-21swapper/423:25:194
344493899350,16cyclictest0-21swapper/721:40:157
344493899350,16cyclictest0-21swapper/719:40:167
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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