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2026-05-02 - 08:01
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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 rack1slot8.osadl.org (updated Sat May 02, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1837199929848,52cyclictest0-21swapper/022:33:050
1837299918836,47cyclictest0-21swapper/122:33:041
1837199881791,84cyclictest0-21swapper/021:37:280
1837299852777,40cyclictest0-21swapper/121:37:281
180412767747,13sleep10-21swapper/119:07:041
181372726702,17sleep00-21swapper/019:08:000
1837199407334,52cyclictest0-21swapper/019:11:130
1837299399323,50cyclictest0-21swapper/119:11:131
1837199783,68cyclictest6846-21munin-node00:20:200
1837199743,65cyclictest13304-21ssh00:31:420
18371997328,30cyclictest88850irq/46-eth0-tx-21:50:170
1837199732,65cyclictest32460-21ssh00:09:050
1837199722,64cyclictest15899-21ssh23:39:280
1837199722,56cyclictest6590-21munin-node21:25:200
1837199722,55cyclictest29390-21diskmemload00:15:200
1837199715,60cyclictest0-21swapper/021:46:070
1837199713,62cyclictest18684-21latency_hist20:40:010
1837199713,62cyclictest12822-21ssh23:33:260
1837199713,46cyclictest28716-21ssh23:04:110
1837199712,63cyclictest4603-21ssh23:18:410
1837199712,63cyclictest29862-21diskmemload22:06:530
1837199712,53cyclictest9525-21latency_hist20:15:010
1837199707,53cyclictest0-21swapper/021:55:160
18371997048,17cyclictest0-21swapper/022:10:160
1837199703,60cyclictest14672-21ssh22:38:350
1837199703,42cyclictest16800-21ssh00:39:120
1837199702,62cyclictest4506-21ssh21:21:220
1837199697,54cyclictest0-21swapper/022:55:240
18371996943,21cyclictest0-21swapper/023:40:310
1837199694,52cyclictest0-21swapper/022:22:470
1837199693,44cyclictest17583-21ssh22:44:050
1837199693,39cyclictest20270-21yum23:45:280
18371996921,42cyclictest88850irq/46-eth0-tx-23:23:140
1837199692,58cyclictest31798-21latency_hist23:10:010
268432680,4sleep026842-21switchtime21:00:240
18371996838,25cyclictest0-21swapper/000:27:190
18371996834,29cyclictest88850irq/46-eth0-tx-23:10:140
18371996834,29cyclictest88850irq/46-eth0-tx-21:30:180
1837199683,39cyclictest2650-21ssh00:13:120
1837199683,39cyclictest2650-21ssh00:13:110
1837199682,60cyclictest20351-21latency_hist20:45:010
1837199682,60cyclictest15832-21ssh21:41:250
1837199682,50cyclictest25760-21latency_hist21:00:000
18371996746,16cyclictest0-21swapper/000:03:070
18371996745,17cyclictest0-21swapper/020:00:170
18371996719,42cyclictest88850irq/46-eth0-tx-21:17:380
1837199665,46cyclictest0-21swapper/021:13:070
1837199663,46cyclictest26421-21ssh23:57:280
1837199663,42cyclictest19513-21ssh22:46:130
1837199663,41cyclictest9277-21ssh23:25:470
1837199662,57cyclictest1189-21snmpd19:36:580
1837199662,45cyclictest27112-21ssh22:01:590
1837199662,43cyclictest14498-21runrttasks20:25:420
1837199662,37cyclictest4099-21latency_hist20:00:010
18371996543,17cyclictest0-21swapper/020:10:160
18371996445,15cyclictest0-21swapper/023:50:110
1837199644,51cyclictest0-21swapper/020:43:440
1837199644,46cyclictest0-21swapper/019:18:420
1837199643,55cyclictest20794-21ssh22:50:050
1837199642,43cyclictest2785-21ssh22:15:480
18372996328,28cyclictest23030-21munin-node20:50:201
18372996328,28cyclictest23030-21munin-node20:50:191
1837199633,54cyclictest23768-21latency_hist19:25:010
1837199632,55cyclictest9599-21ssh22:30:010
18372996240,16cyclictest30939-21munin-node00:05:271
18372996229,28cyclictest29510-21gltestperf23:05:131
1837199622,39cyclictest27903-21cpu21:05:120
18372996128,27cyclictest25331-21runrttasks19:27:381
1837199614,38cyclictest1333-21ntp_states19:50:210
1837199612,53cyclictest31136-21munin-node19:45:230
228699600,5rtkit-daemon2285-21rtkit-daemon00:15:211
18372996038,16cyclictest32568-21runrttasks19:47:551
18372996038,16cyclictest29396-21awk21:10:001
18372996038,16cyclictest2734-21sshd00:13:261
18372996038,16cyclictest2734-21sshd00:13:251
18372996030,25cyclictest0-21swapper/123:03:401
1837199606,49cyclictest0-21swapper/019:25:160
1837199603,51cyclictest25724-21munin-node19:30:230
228699590,5rtkit-daemon2285-21rtkit-daemon22:12:351
18371995938,16cyclictest0-21swapper/019:40:160
1837199593,50cyclictest6100-21telnet20:05:110
1837199592,51cyclictest24092-21latency_hist20:55:010
228699580,5rtkit-daemon2285-21rtkit-daemon23:46:371
228699580,5rtkit-daemon2285-21rtkit-daemon22:51:451
228699580,5rtkit-daemon2285-21rtkit-daemon21:44:341
228699580,4rtkit-daemon2285-21rtkit-daemon23:58:021
228699580,4rtkit-daemon2285-21rtkit-daemon21:51:141
228699580,4rtkit-daemon2285-21rtkit-daemon00:28:321
18372995829,24cyclictest32464-21munin-node21:15:121
18372995826,25cyclictest1568-21runrttasks19:54:521
18372995823,30cyclictest0-21swapper/100:32:061
1837199582,51cyclictest16264-21vmstat20:30:240
228699570,5rtkit-daemon2285-21rtkit-daemon23:34:011
228699570,5rtkit-daemon2285-21rtkit-daemon23:26:101
228699570,5rtkit-daemon2285-21rtkit-daemon22:49:101
228699570,4rtkit-daemon2285-21rtkit-daemon23:40:161
228699570,4rtkit-daemon2285-21rtkit-daemon20:46:181
228699570,4rtkit-daemon2285-21rtkit-daemon00:37:571
18372995738,14cyclictest9113-21gltestperf21:30:161
18372995735,17cyclictest23605-21munin-node22:55:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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