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2026-01-10 - 18:00
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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 all highest latencies:
System rack1slot8.osadl.org (updated Sat Jan 10, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
969399425310,68cyclictest11076-21seq07:10:560
969499418306,61cyclictest0-21swapper/107:10:561
969399379302,41cyclictest18851-21munin-node07:35:190
969499356312,29cyclictest0-21swapper/107:35:191
965227928,38sleep00-21swapper/007:09:570
969399773,36cyclictest17947-21ssh12:00:130
969399772,42cyclictest29256-21ssh10:22:570
969499752,66cyclictest32052-21ssh11:25:421
969399746,62cyclictest4962-21timerandwakeup11:35:240
9693997419,49cyclictest88850irq/46-eth0-tx-09:30:260
969399733,35cyclictest15279-21munin-run08:55:010
9693997320,47cyclictest88850irq/46-eth0-tx-10:39:000
969399729,57cyclictest340-21seq08:11:410
969399727,59cyclictest0-21swapper/010:51:450
969399725,48cyclictest0-21swapper/011:00:150
969399724,61cyclictest26514-21ssh09:20:110
969399723,63cyclictest14263-21munin-node10:55:160
9693997229,37cyclictest0-21swapper/012:06:420
9693997222,36cyclictest88850irq/46-eth0-tx-12:37:590
9693997221,45cyclictest88850irq/46-eth0-tx-09:58:090
969399722,64cyclictest14836-21latency_hist11:55:010
969399722,54cyclictest27911-21latency_hist11:20:000
969399714,54cyclictest0-21swapper/011:29:060
969399712,62cyclictest27165-21latency_hist10:20:010
9693997119,46cyclictest88850irq/46-eth0-tx-10:34:080
228699710,4rtkit-daemon2285-21rtkit-daemon07:06:391
969399708,53cyclictest0-21swapper/012:20:180
969399706,58cyclictest0-21swapper/009:00:190
969399706,57cyclictest0-21swapper/012:10:420
969399703,43cyclictest406-21ssh12:26:090
969399703,43cyclictest21201-21ssh11:06:100
969399703,39cyclictest23045-21irqstats11:10:180
9693997026,29cyclictest88850irq/46-eth0-tx-10:10:140
9693997020,44cyclictest88850irq/46-eth0-tx-10:02:440
969399702,61cyclictest11575-21ssh11:48:330
969399702,53cyclictest16899-21sadc07:30:010
969399699,54cyclictest25910-21latency_hist07:55:020
969399694,59cyclictest28134-21ssh11:20:120
969399694,59cyclictest0-21swapper/008:43:250
969399694,41cyclictest19440-21gltestperf10:05:150
969399693,60cyclictest26729-21ntpq12:15:220
969399693,60cyclictest1856-21munin-node12:30:170
969399693,46cyclictest31552-21ssh10:26:230
969399693,45cyclictest8894-21ssh11:43:480
969399692,61cyclictest27718-21munin-run08:00:010
9693996918,45cyclictest88850irq/46-eth0-tx-11:30:400
9693996918,45cyclictest88850irq/46-eth0-tx-09:13:390
9693996917,46cyclictest88850irq/46-eth0-tx-09:43:070
9693996913,50cyclictest88850irq/46-eth0-tx-09:46:350
969499682,59cyclictest31490-21munin-node08:10:261
969399684,36cyclictest7385-21ssh10:40:590
9693996830,32cyclictest88850irq/46-eth0-tx-09:25:130
9693996830,32cyclictest88850irq/46-eth0-tx-09:25:130
969399683,58cyclictest12557-21ntp_states08:45:210
969399683,55cyclictest18648-21ksmtuned07:34:350
969399683,42cyclictest10500-21ssh10:47:110
969399682,45cyclictest17099-21latency_hist09:00:010
9693996815,40cyclictest88850irq/46-eth0-tx-09:15:500
969399674,56cyclictest15183-21df11:55:130
969399673,58cyclictest15095-21latency_hist07:25:020
969399672,59cyclictest20702-21latency_hist09:10:010
9693996716,46cyclictest88850irq/46-eth0-tx-09:37:380
969499663,57cyclictest29965-21sh11:22:591
969399663,56cyclictest10790-21munin-node09:50:120
969399662,58cyclictest27868-21munin-node08:00:220
969499653,55cyclictest88750irq/45-eth0-rx-11:50:471
969499652,57cyclictest29008-21sed12:20:131
969499652,57cyclictest17700-21ssh12:00:101
969499652,56cyclictest9570-21ssh09:46:281
969399658,52cyclictest1327-21nscd08:30:140
969399653,40cyclictest4916-21df_inode08:25:150
969499643,55cyclictest21067-21sh10:08:081
969399642,56cyclictest9610-21seq08:37:370
969499634,49cyclictest2270-21gdm-simple-gree09:15:591
969499633,54cyclictest31902-21ssh10:27:351
969499633,54cyclictest24105-21latency_hist07:50:021
969499633,52cyclictest1805-21memory11:30:201
969499632,55cyclictest5831-21ssh09:40:161
969499632,54cyclictest20808-21munin-node07:40:111
969499632,54cyclictest11267-21munin-node09:50:161
969499632,47cyclictest27797-21latency_hist11:20:011
969399638,50cyclictest24103-21crond07:50:010
969399633,54cyclictest2038-21unixbench_multi08:15:250
969399632,40cyclictest11641-21munin-node07:15:280
969499623,53cyclictest8402-21sh11:42:071
969499623,53cyclictest16862-21ssh11:57:471
969499623,52cyclictest333-21ssh09:30:231
969499623,43cyclictest15024-21grep10:55:221
969499622,54cyclictest12998-21munin-node08:45:261
969499622,53cyclictest13289-21latency_hist07:20:021
969499622,50cyclictest30623-21runrttasks09:26:061
969499622,50cyclictest30623-21runrttasks09:26:061
969399622,53cyclictest30525-21processes08:05:220
969499617,49cyclictest3746-21sh12:32:371
969499614,43cyclictest0-21swapper/108:22:531
969499613,52cyclictest12040-21iostat10:50:171
969499613,40cyclictest1684-21munin-node08:15:201
969499612,53cyclictest88750irq/45-eth0-rx-12:29:201
969499612,53cyclictest88750irq/45-eth0-rx-10:05:011
969499612,53cyclictest1568-21runrttasks10:12:571
969499612,52cyclictest25884-21latency_hist12:15:001
969499612,52cyclictest20707-21diskmemload09:38:181
9694996116,38cyclictest22550-21sh12:08:221
969399612,54cyclictest2896-21taskset08:20:120
969499603,51cyclictest16020-21munin-node08:55:171
969499603,51cyclictest11104-21sh10:49:181
969499603,51cyclictest10595-21munin-node08:40:201
969499603,50cyclictest6470-21munin-node10:40:171
969499602,52cyclictest8314-21munin-node08:35:121
969499602,52cyclictest6743-21gltestperf08:30:161
969499602,52cyclictest28477-21missed_timers08:00:201
969499602,52cyclictest26073-21sh10:16:281
969499602,52cyclictest19861-21aten_r1power_po11:05:121
969499602,52cyclictest14954-21sh09:56:041
969499602,50cyclictest26787-21ssh09:20:131
969399603,39cyclictest20654-21munin-node07:40:200
969499594,48cyclictest3980-21munin-node11:35:111
969499593,51cyclictest1626-21unixbench_multi10:30:271
969499593,50cyclictest3996-21sh10:35:231
969499592,51cyclictest20712-21munin-run09:10:011
969499592,50cyclictest17564-21munin-node07:30:171
969499592,48cyclictest27421-21ssh10:20:121
969499592,48cyclictest23654-21ssh11:10:261
9694995911,42cyclictest22010-21unixbench_singl09:10:251
969499584,49cyclictest0-21swapper/108:25:221
969499584,47cyclictest13864-21df08:50:121
969499583,49cyclictest17999-21munin-node11:00:261
969499582,50cyclictest6365-21sh12:37:151
969499582,50cyclictest29925-21munin-node08:05:131
969499582,50cyclictest27451-21sh12:16:211
969499582,50cyclictest24977-21munin-node07:50:201
969499582,50cyclictest10346-21sendmail_mailqu11:45:221
969499582,49cyclictest17367-21munin-node09:00:121
969499582,39cyclictest15247-21munin-node07:25:121
969499572,48cyclictest26135-21munin-node07:55:121
969499572,48cyclictest13733-21munin-node07:20:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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