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2026-08-07 - 18:20
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack7slot2.osadl.org (updated Fri Aug 07, 2026 12:44:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
361705299109103,4cyclictest3712788-21kworker/u4:5+events_unbound10:34:571
3617052999484,8cyclictest3774586-21kworker/u4:6+events_unbound11:40:141
3617051998968,17cyclictest53-21kswapd010:35:080
3617052998780,5cyclictest3618271-21kworker/u4:8+events_unbound09:14:391
3617052998372,7cyclictest3712788-21kworker/u4:5+events_unbound10:29:571
3617052997770,5cyclictest3712789-21kworker/u4:6+events_unbound10:24:561
3617051997441,18cyclictest53-21kswapd012:40:080
3617051997441,18cyclictest53-21kswapd012:40:080
3617052997259,7cyclictest0-21swapper/109:40:111
3617052996762,4cyclictest3792652-21kworker/u4:4+events_unbound12:05:171
3617051996538,20cyclictest151ktimers/010:55:140
3617052996354,6cyclictest3624661-21kworker/u4:2+events_unbound07:59:251
3617051996251,9cyclictest3774586-21kworker/u4:6+events_unbound11:55:150
3617052996155,4cyclictest3620852-21kworker/u4:16+events_unbound08:40:021
3617052996153,6cyclictest3797110-21kworker/u4:10+events_unbound12:10:081
3617051996125,26cyclictest25650irq/23-42890000.ethernet09:30:090
3617052996042,5cyclictest3739135-21kworker/u4:5+events_unbound11:25:081
3617051995947,8cyclictest0-21swapper/009:25:110
3617051995939,6cyclictest3645315-21sendmail09:00:000
3617052995851,5cyclictest3672984-21kworker/u4:11+events_unbound09:40:011
3617052995850,5cyclictest3631063-21kworker/u4:4+events_unbound08:44:321
3617052995848,7cyclictest3819229-21kworker/u4:4+events_unbound12:25:191
361705199582,12cyclictest3636304-21apt-get08:25:080
3617051995740,9cyclictest25650irq/23-42890000.ethernet10:30:110
3617051995738,16cyclictest3661389-21munin-plugin-st09:25:000
3617051995725,26cyclictest25650irq/23-42890000.ethernet08:15:110
3617051995725,26cyclictest25650irq/23-42890000.ethernet08:15:110
3617052995649,5cyclictest3604351-21kworker/u4:1+events_unbound07:19:201
3617052995648,6cyclictest3618271-21kworker/u4:8+events_unbound07:14:171
3617052995547,6cyclictest3624661-21kworker/u4:2+events_unbound07:49:241
3617052995547,5cyclictest3823745-21kworker/u4:6+events_unbound12:35:031
3617052995547,5cyclictest3823745-21kworker/u4:6+events_unbound12:35:031
3617051995548,5cyclictest3649419-21/usr/sbin/munin09:10:400
3617051995444,7cyclictest3822610-21grep12:25:420
3617051995444,7cyclictest3733791-21who10:45:400
361705199544,14cyclictest3791016-21ssh11:50:330
3617052995344,6cyclictest3615772-21kworker/u4:0+events_unbound08:14:281
3617052995341,8cyclictest3617049-21cyclictest10:14:561
3617052995336,8cyclictest3634961-21kworker/u4:6+events_unbound08:20:271
3617051995345,6cyclictest3677472-21kworker/u4:0-rpciod09:50:190
3617051995344,6cyclictest3617049-21cyclictest12:10:170
3617051995337,10cyclictest3633629-21modprobe08:15:010
3617052995244,6cyclictest3743649-21kworker/u4:8+events_unbound11:30:131
3617052995241,9cyclictest3628322-21timerwakeupswit07:50:371
3617052995238,8cyclictest0-21swapper/111:50:351
3617051995218,18cyclictest0-21swapper/011:25:200
361705299515,43cyclictest3728725-21ssh10:40:281
3617052995145,4cyclictest3652803-21aten_r7power_po09:15:141
3617052995143,6cyclictest3645269-21kworker/u4:13+events_unbound08:59:361
3617052995142,7cyclictest3770066-21kworker/u4:16+events_unbound11:35:131
3617052995142,7cyclictest3770066-21kworker/u4:16+events_unbound11:35:131
3617051995144,5cyclictest3640162-21kworker/u4:12+events_unbound09:00:030
3617051995138,9cyclictest3779706-21sh11:38:030
3617051995138,9cyclictest3779706-21sh11:38:030
3617051995136,12cyclictest3738001-21timerandwakeup10:50:370
3617052995042,6cyclictest3647844-21systemd09:09:371
3617052995011,26cyclictest3683809-21ssh09:50:161
3617051995042,6cyclictest3750576-21cut11:05:210
3617051995038,9cyclictest3696888-21latency_hist10:05:010
3617051995031,16cyclictest3799943-21ntpq12:00:400
3617052994942,5cyclictest3774582-21kworker/u4:2+events_unbound11:47:461
3617052994942,5cyclictest3689165-21sendmail_mailqu09:55:371
3617052994942,5cyclictest3681289-21kworker/u4:4+events_unbound10:50:021
3617052994941,5cyclictest3764425-21gcc11:20:361
3617052994941,5cyclictest0-21swapper/108:05:401
3617052994940,7cyclictest3644008-21systemd08:54:351
3617052994940,6cyclictest3665843-21apt-get09:30:041
3617052994939,7cyclictest0-21swapper/109:20:311
361705199496,16cyclictest3637824-21apt-get08:30:130
3617051994942,5cyclictest3812813-21fschecks_count12:15:220
361705199492,38cyclictest3688168-21apt-get09:55:120
3617052994841,5cyclictest3799247-21sed12:00:161
3617051994842,4cyclictest3781420-21aten_r7power_po11:40:160
3617051994841,5cyclictest3622122-21kworker/u4:17+events_unbound08:23:110
3617051994840,6cyclictest3760043-21sendmail_mailqu11:15:370
3617051994840,6cyclictest3652698-21/usr/sbin/munin09:15:130
3617051994838,7cyclictest3626427-21fschecks_count07:45:200
3617052994738,7cyclictest3707057-21timerandwakeup10:15:401
3617052994738,7cyclictest3707057-21timerandwakeup10:15:401
3617051994739,6cyclictest3716103-21/usr/sbin/munin10:25:420
3617051994739,5cyclictest0-21swapper/012:30:160
3617051994738,7cyclictest3705504-21systemd10:14:520
3617051994738,6cyclictest0-21swapper/010:24:550
3617051994737,8cyclictest3755654-21sendmail_mailtr11:10:370
3617051994737,7cyclictest3772770-21fschecks_time11:30:200
3617051994734,11cyclictest53-21kswapd011:20:140
3617052994640,4cyclictest3692817-21aten_r7power_vo10:00:171
3617052994639,5cyclictest3757188-21kworker/u4:6+events_unbound11:15:021
3617052994638,5cyclictest3638086-21fschecks_count08:30:201
3617052994637,7cyclictest3742534-21unixbench-2d10:55:391
3617052994637,7cyclictest3662631-21processes09:25:351
3617052994630,4cyclictest3823745-21kworker/u4:6+events_unbound12:35:011
361705299461,12cyclictest171rcu_preempt12:20:351
3617051994640,4cyclictest3786125-21fschecks_time11:45:200
3617051994636,7cyclictest3746520-21/usr/sbin/munin11:00:280
3617051994627,6cyclictest0-21swapper/012:20:290
3617051994610,5cyclictest191rcuc/010:19:370
3617051994610,5cyclictest191rcuc/010:19:370
3617052994538,5cyclictest3723774-21aten_r7power_po10:35:231
3617052994538,5cyclictest3631063-21kworker/u4:4+events_unbound08:19:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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