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2026-07-01 - 04:55
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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 rack8slot2.osadl.org (updated Wed Jul 01, 2026 00:43:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
220713099173157,12cyclictest81-21hwrng00:33:111
220713099173157,12cyclictest81-21hwrng00:33:111
220713099155132,21cyclictest0-21swapper/122:00:171
22071299914722,42cyclictest2387242-21kworker/u16:18+xprtiod00:30:050
22071299914722,42cyclictest2387242-21kworker/u16:18+xprtiod00:30:050
220713099145130,11cyclictest81-21hwrng22:51:481
22071299914220,90cyclictest0-21swapper/022:40:540
22071299914220,90cyclictest0-21swapper/022:40:540
220713299138133,3cyclictest0-21swapper/322:25:163
220713299138133,3cyclictest0-21swapper/322:25:163
220712999137120,8cyclictest0-21swapper/023:05:310
220713199134100,27cyclictest381ktimers/223:10:102
22071329912919,3cyclictest2279463-21kworker/u16:0+rpciod22:24:553
22071309912999,22cyclictest0-21swapper/123:20:461
22071329912823,12cyclictest2374290-21kworker/u16:15+nfsiod00:19:573
220712999128118,5cyclictest81-21hwrng23:20:280
220713099127114,10cyclictest81-21hwrng00:15:461
22071299912723,94cyclictest56-21kcompactd022:27:540
22071299912723,94cyclictest56-21kcompactd022:27:540
22071309912640,51cyclictest10450irq/163-8000000.ethernet-tx623:41:061
22071319912599,24cyclictest381ktimers/221:05:292
22071329912353,60cyclictest461ktimers/320:05:093
22071319912359,30cyclictest2273260-21sendmail-msp21:40:082
220713199123108,10cyclictest81-21hwrng19:45:262
220713199123108,10cyclictest81-21hwrng19:45:262
220713099122112,7cyclictest81-21hwrng21:36:021
220713299121100,8cyclictest81-21hwrng23:56:193
220713199121105,12cyclictest81-21hwrng23:50:102
220713199121105,12cyclictest81-21hwrng23:50:102
22071319912097,18cyclictest2207128-21cyclictest21:10:452
220712999120109,6cyclictest81-21hwrng21:50:220
220712999120109,6cyclictest81-21hwrng21:50:220
220713199119108,6cyclictest81-21hwrng19:30:042
22071309911982,32cyclictest301ktimers/100:25:301
22071319911899,14cyclictest81-21hwrng20:08:592
2207131991186,89cyclictest2210671-21kworker/u16:6+rpciod19:40:512
220713099118109,6cyclictest81-21hwrng23:32:461
220712999117109,5cyclictest81-21hwrng22:58:580
22071329911696,17cyclictest1-21systemd21:25:503
220713199116107,5cyclictest81-21hwrng21:37:032
22071299911313,87cyclictest2278661-21grep21:46:060
22071299911313,87cyclictest2278661-21grep21:46:060
220713299111103,5cyclictest81-21hwrng21:10:263
22071309911096,12cyclictest81-21hwrng22:37:281
22071309911096,12cyclictest81-21hwrng22:37:281
220713099110102,5cyclictest81-21hwrng23:36:511
220713099110102,5cyclictest81-21hwrng23:36:511
220713099110100,7cyclictest81-21hwrng21:06:201
220713299108102,3cyclictest2252087-21diskmemload22:51:023
22071329910798,5cyclictest81-21hwrng22:05:433
2207132991074,78cyclictest2315518-21sendmail-msp22:40:503
2207132991074,78cyclictest2315518-21sendmail-msp22:40:503
22071319910799,5cyclictest81-21hwrng21:56:302
22071319910714,14cyclictest2389538-21ntpq00:25:572
220713199107100,5cyclictest81-21hwrng22:29:162
220713199107100,5cyclictest81-21hwrng22:29:162
22071309910799,4cyclictest81-21hwrng20:24:211
220713099107100,5cyclictest81-21hwrng00:01:261
22071319910697,5cyclictest81-21hwrng20:30:292
22071319910658,11cyclictest381ktimers/222:10:172
22071309910654,21cyclictest301ktimers/122:10:451
22071299910624,50cyclictest2345219-21kworker/u16:11+rpciod23:39:560
22071299910624,50cyclictest2345219-21kworker/u16:11+rpciod23:39:560
22071329910536,42cyclictest10650irq/205-8000000.ethernet-rx021:40:303
22071319910587,14cyclictest81-21hwrng22:00:362
22071309910596,7cyclictest81-21hwrng21:54:271
22071309910596,7cyclictest81-21hwrng21:54:271
22071319910493,8cyclictest0-21swapper/221:20:242
22071319910493,8cyclictest0-21swapper/221:20:242
22071319910447,26cyclictest10650irq/205-8000000.ethernet-rx021:45:522
22071319910447,26cyclictest10650irq/205-8000000.ethernet-rx021:45:522
2207129991044,16cyclictest2231251-21kworker/u16:4+nfsiod20:44:550
22071329910395,5cyclictest81-21hwrng21:19:393
22071329910395,5cyclictest81-21hwrng21:19:393
22071329910388,11cyclictest81-21hwrng19:55:403
22071329910388,11cyclictest81-21hwrng19:55:403
22071319910389,9cyclictest0-21swapper/222:05:232
2207131991035,95cyclictest2379048-21ntpq00:10:522
2207131991035,95cyclictest2379048-21ntpq00:10:522
22071309910394,6cyclictest81-21hwrng20:15:081
2207132991029,9cyclictest2338059-21ntpq23:10:563
22071329910293,5cyclictest81-21hwrng23:07:103
2207132991021,28cyclictest10650irq/205-8000000.ethernet-rx023:25:523
2207132991021,28cyclictest10650irq/205-8000000.ethernet-rx023:25:523
2207131991021,57cyclictest2308728-21apt-get22:30:062
2207131991021,57cyclictest2308728-21apt-get22:30:062
22071309910294,5cyclictest81-21hwrng21:42:101
22071299910296,4cyclictest0-21swapper/000:35:160
22071299910296,4cyclictest0-21swapper/000:35:160
22071319910193,5cyclictest81-21hwrng23:35:502
22071319910193,5cyclictest81-21hwrng23:35:502
22071309910192,6cyclictest81-21hwrng22:48:441
22071309910187,11cyclictest81-21hwrng21:00:111
22071329910091,5cyclictest81-21hwrng21:22:433
22071329910091,5cyclictest81-21hwrng21:22:433
22071299910034,11cyclictest171ktimers/023:25:050
22071299910034,11cyclictest171ktimers/023:25:050
2207132999990,6cyclictest81-21hwrng00:27:023
2207132999933,54cyclictest2215818-21/usr/sbin/munin19:30:593
2207132999924,5cyclictest0-21swapper/320:10:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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