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2026-04-26 - 05:02
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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 26, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3167369999515,59cyclictest3343920-21/usr/sbin/munin00:30:140
3167369998445,38cyclictest0-21swapper/020:35:220
316737599780,2cyclictest0-21swapper/621:15:166
3167369997517,19cyclictest0-21swapper/019:44:580
3167369997415,59cyclictest3255355-21cron21:50:000
3167369997233,38cyclictest874-21mta-sts-daemon19:34:240
3167376997152,19cyclictest0-21swapper/723:30:177
3167369997012,39cyclictest3281341-21latency22:35:180
3167369997012,39cyclictest3281341-21latency22:35:180
3167369996324,39cyclictest0-21swapper/000:14:400
316736999623,19cyclictest0-21swapper/000:09:120
316736999612,40cyclictest236199-21snmpd20:46:120
316736999601,19cyclictest0-21swapper/022:33:360
3167369995917,39cyclictest3251673-21gcc21:40:200
316736999591,19cyclictest0-21swapper/020:24:440
316736999590,59cyclictest0-21swapper/019:25:440
3167369995839,19cyclictest0-21swapper/023:44:480
3167369995819,0cyclictest3236709-21/usr/sbin/munin21:15:240
316736999580,58cyclictest0-21swapper/021:31:560
316736999580,58cyclictest0-21swapper/000:37:230
316736999580,19cyclictest0-21swapper/023:13:040
316736999580,0cyclictest0-21swapper/019:55:360
316736999580,0cyclictest0-21swapper/019:11:560
3167369995738,19cyclictest101650irq/40-eno2-TxRx-122:22:360
3167369995719,0cyclictest101650irq/40-eno2-TxRx-119:49:190
3167369995718,0cyclictest3191726-21users19:50:240
316736999570,57cyclictest0-21swapper/022:58:280
316736999570,18cyclictest0-21swapper/020:02:000
316736999570,18cyclictest0-21swapper/019:21:520
316736999570,17cyclictest0-21swapper/023:17:160
316736999570,17cyclictest0-21swapper/020:13:000
3167369995638,0cyclictest101650irq/40-eno2-TxRx-121:21:200
3167369995638,0cyclictest101650irq/40-eno2-TxRx-120:33:120
3167369995637,19cyclictest171ktimers/020:05:160
3167369995637,19cyclictest101650irq/40-eno2-TxRx-121:36:480
3167369995637,19cyclictest0-21swapper/021:27:110
3167369995619,37cyclictest101650irq/40-eno2-TxRx-123:50:020
3167369995619,18cyclictest3173104-21munin-run19:20:020
3167369995619,18cyclictest0-21swapper/023:06:260
3167369995618,38cyclictest101650irq/40-eno2-TxRx-123:29:120
3167369995618,38cyclictest101650irq/40-eno2-TxRx-100:26:110
316736999560,17cyclictest0-21swapper/022:00:560
3167369995537,18cyclictest101650irq/40-eno2-TxRx-123:04:550
3167369995537,18cyclictest101650irq/40-eno2-TxRx-100:02:550
3167369995517,1cyclictest101650irq/40-eno2-TxRx-121:50:400
3167369995517,19cyclictest0-21swapper/020:55:340
3167369995517,18cyclictest0-21swapper/020:15:240
3167369995517,0cyclictest101650irq/40-eno2-TxRx-123:33:040
3167369995515,19cyclictest0-21swapper/023:55:200
3167369995514,19cyclictest3288069-21chrt22:49:320
3167369995436,18cyclictest101650irq/40-eno2-TxRx-122:18:240
3167369995436,18cyclictest101650irq/40-eno2-TxRx-120:26:160
3167369995416,38cyclictest101650irq/40-eno2-TxRx-121:57:200
3167369995416,18cyclictest171ktimers/022:05:160
3167369995415,39cyclictest0-21swapper/022:53:580
316736999540,15cyclictest0-21swapper/022:12:130
3167372995314,20cyclictest0-21swapper/323:50:163
3167370995314,19cyclictest0-21swapper/120:10:161
3167369995336,17cyclictest101650irq/40-eno2-TxRx-123:21:400
3167369995335,18cyclictest101650irq/40-eno2-TxRx-122:28:560
3167369995315,0cyclictest101650irq/40-eno2-TxRx-123:35:510
3167369995315,0cyclictest101650irq/40-eno2-TxRx-122:42:040
3167369995315,0cyclictest101650irq/40-eno2-TxRx-122:42:030
3167369995314,39cyclictest0-21swapper/021:14:580
3167369995215,18cyclictest101650irq/40-eno2-TxRx-121:05:320
3167369995214,0cyclictest101650irq/40-eno2-TxRx-121:02:150
3167369995213,18cyclictest171ktimers/000:15:240
3167369995132,19cyclictest0-21swapper/020:50:250
3167375995010,39cyclictest0-21swapper/620:10:156
3167371995031,19cyclictest0-21swapper/221:05:152
3167371995012,19cyclictest0-21swapper/221:45:172
3167369995032,18cyclictest0-21swapper/019:35:040
3167369995012,18cyclictest0-21swapper/020:40:150
316736999499,19cyclictest0-21swapper/023:52:400
3167374994830,0cyclictest0-21swapper/500:05:175
316736999488,0cyclictest0-21swapper/000:20:240
316737499479,19cyclictest0-21swapper/522:35:165
316737499479,19cyclictest0-21swapper/522:35:165
316737499479,19cyclictest0-21swapper/500:25:145
316737399468,19cyclictest0-21swapper/423:10:144
316737699458,18cyclictest871-21mta-sts-daemon20:40:157
316737599457,19cyclictest0-21swapper/600:35:176
316737599455,39cyclictest0-21swapper/619:30:176
316737199457,19cyclictest0-21swapper/220:25:162
316737699446,19cyclictest0-21swapper/723:55:167
3167374994424,19cyclictest0-21swapper/500:15:155
316737599435,19cyclictest0-21swapper/620:05:176
316737199433,39cyclictest0-21swapper/222:35:162
316737199433,39cyclictest0-21swapper/222:35:162
316737099424,38cyclictest0-21swapper/123:30:171
316737099423,18cyclictest0-21swapper/100:35:171
316737699402,19cyclictest0-21swapper/723:35:157
3167372994022,18cyclictest0-21swapper/323:00:183
316737199400,39cyclictest0-21swapper/219:15:172
316737599390,20cyclictest0-21swapper/600:20:176
316737399390,20cyclictest0-21swapper/400:25:154
316737399390,0cyclictest0-21swapper/421:10:164
316737299391,19cyclictest0-21swapper/321:10:173
316737199390,39cyclictest0-21swapper/223:40:152
316737699380,19cyclictest88-21ksoftirqd/721:40:157
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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