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2026-08-19 - 15:43
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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
Characteristics of the 376 highest latencies:
System rackcslot2.osadl.org (updated Wed Aug 19, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2580021780,2sleep0121rcuc/007:03:200
102662970,0sleep12739899cyclictest09:08:271
308142950,1sleep00-21swapper/009:38:070
2696627157,9sleep10-21swapper/107:05:311
27397993230,1cyclictest7-21ksoftirqd/007:33:070
27398993028,1cyclictest24-21ksoftirqd/109:33:201
27397992910,0cyclictest0-21swapper/010:53:010
27397992812,3cyclictest27395-21cyclictest11:38:550
2739899272,24cyclictest24-21ksoftirqd/111:41:281
2739899270,2cyclictest0-21swapper/111:56:391
27398992619,6cyclictest4848-21apache212:03:201
27397992610,7cyclictest0-21swapper/009:27:290
2739799260,0cyclictest20650-21kworker/u4:210:13:430
27398992523,1cyclictest24-21ksoftirqd/107:33:071
27398992520,3cyclictest0-21swapper/109:53:191
27398992519,2cyclictest231ktimersoftd/108:38:191
2739899251,23cyclictest13329-21if_err_eth009:13:211
2739799244,15cyclictest0-21swapper/008:08:260
27397992410,2cyclictest0-21swapper/009:43:310
2739899233,19cyclictest5393-21munin-run09:48:071
27398992313,7cyclictest0-21swapper/110:15:111
27398992310,8cyclictest0-21swapper/110:52:271
2739899230,19cyclictest0-21swapper/112:28:251
27397992322,1cyclictest0-21swapper/011:13:390
27397992313,6cyclictest134-21jbd2/sda1-810:34:290
27397992310,9cyclictest0-21swapper/012:06:180
27397992310,7cyclictest0-21swapper/011:53:090
2739799230,5cyclictest8904-21diskmemload09:54:000
2739799230,12cyclictest25875-21munin-run08:28:060
3195622210,0sleep10-21swapper/111:12:061
2739899227,13cyclictest0-21swapper/107:13:171
2739899225,11cyclictest0-21swapper/109:48:181
27398992210,1cyclictest0-21swapper/111:32:231
27397992218,3cyclictest4822-21apache207:46:120
27397992216,4cyclictest4822-21apache210:32:480
27397992215,5cyclictest4848-21apache212:33:510
27397992214,6cyclictest4822-21apache209:50:010
27397992214,4cyclictest0-21swapper/009:14:560
27397992211,4cyclictest81ktimersoftd/009:43:070
27397992210,8cyclictest0-21swapper/009:08:200
27397992210,4cyclictest0-21swapper/008:18:180
27397992210,3cyclictest0-21swapper/012:23:240
27397992210,3cyclictest0-21swapper/012:08:500
2739899212,6cyclictest0-21swapper/110:02:271
27398992113,6cyclictest0-21swapper/107:58:251
2739899211,19cyclictest32556-21ntp_states08:43:241
27398992110,5cyclictest0-21swapper/108:28:191
27398992110,2cyclictest0-21swapper/107:38:181
2739899210,20cyclictest0-21swapper/110:23:451
2739899210,18cyclictest22925-21ssh09:27:051
2739799219,7cyclictest0-21swapper/010:18:280
2739799213,9cyclictest0-21swapper/010:43:210
27397992115,5cyclictest100250irq/107-eth1-rx10:53:270
27397992110,6cyclictest0-21swapper/011:58:120
27397992110,5cyclictest0-21swapper/009:18:250
27397992110,2cyclictest0-21swapper/007:18:590
27397992110,1cyclictest0-21swapper/012:32:470
2739899204,9cyclictest0-21swapper/111:43:251
2739899204,9cyclictest0-21swapper/111:23:211
27398992015,3cyclictest0-21swapper/110:58:181
27398992010,7cyclictest0-21swapper/110:53:291
27398992010,5cyclictest0-21swapper/108:33:271
27398992010,4cyclictest0-21swapper/107:47:201
27398992010,2cyclictest0-21swapper/112:01:341
27398992010,1cyclictest0-21swapper/110:09:541
2739899200,3cyclictest0-21swapper/112:14:521
2739799206,8cyclictest27150-21ls08:28:260
2739799203,12cyclictest0-21swapper/010:08:270
2739799202,10cyclictest0-21swapper/008:43:190
27397992019,1cyclictest28787-21sleep07:09:460
27397992018,1cyclictest13711-21if_err_eth312:18:210
27397992017,3cyclictest4822-21apache211:30:540
27397992017,2cyclictest167-21systemd-journal07:16:300
27397992016,3cyclictest7-21ksoftirqd/009:08:060
27397992015,4cyclictest4848-21apache211:52:280
27397992014,2cyclictest11276-21latency07:48:220
27397992011,5cyclictest0-21swapper/011:43:170
27397992010,6cyclictest0-21swapper/007:53:200
27397992010,3cyclictest0-21swapper/011:19:030
2739799200,8cyclictest0-21swapper/008:38:220
3048621910,0sleep00-21swapper/011:08:460
2739899193,13cyclictest0-21swapper/107:53:181
2739899192,9cyclictest0-21swapper/109:18:271
27398991917,1cyclictest6895-21ssh10:35:481
27398991917,1cyclictest20650-21kworker/u4:209:40:021
27398991916,1cyclictest231ktimersoftd/109:28:561
27398991910,8cyclictest0-21swapper/112:23:271
27398991910,6cyclictest4822-21apache212:33:511
27398991910,5cyclictest0-21swapper/107:18:241
27398991910,4cyclictest0-21swapper/111:13:191
27398991910,4cyclictest0-21swapper/108:13:191
27398991910,3cyclictest0-21swapper/108:58:171
2739799194,10cyclictest0-21swapper/008:53:280
27397991910,5cyclictest0-21swapper/011:23:190
27397991910,3cyclictest0-21swapper/009:58:110
27397991910,2cyclictest0-21swapper/008:33:180
27397991910,1cyclictest0-21swapper/010:07:210
2739899183,8cyclictest0-21swapper/110:28:201
2739899183,8cyclictest0-21swapper/110:18:221
27398991817,1cyclictest4822-21apache211:33:491
27398991810,5cyclictest0-21swapper/112:20:201
27398991810,4cyclictest0-21swapper/109:07:081
27398991810,3cyclictest0-21swapper/111:18:171
27398991810,3cyclictest0-21swapper/110:03:161
27398991810,0cyclictest0-21swapper/111:48:361
2739899180,12cyclictest0-21swapper/110:38:181
2739799182,5cyclictest1393-21latency07:23:220
2739799182,4cyclictest0-21swapper/011:03:260
2739799182,12cyclictest8127-21apache_processe10:38:180
27397991816,1cyclictest167-21systemd-journal08:53:060
27397991816,1cyclictest0-21swapper/012:13:250
27397991816,1cyclictest0-21swapper/009:31:450
27397991811,3cyclictest459-21ssh10:27:080
27397991811,2cyclictest5217-21apache_processe08:58:170
27397991810,5cyclictest81ktimersoftd/011:36:300
27397991810,4cyclictest0-21swapper/011:02:350
2739899172,8cyclictest0-21swapper/107:28:191
2739899172,2cyclictest0-21swapper/111:04:371
27398991715,1cyclictest8105-21ssh12:09:351
27398991715,0cyclictest100150irq/106-eth1-rx08:53:271
27398991710,2cyclictest0-21swapper/108:03:281
27398991710,2cyclictest0-21swapper/107:48:191
2739899170,1cyclictest0-21swapper/110:43:401
2739799171,9cyclictest4583-21latency_hist07:33:070
27397991710,3cyclictest0-21swapper/007:38:210
27397991710,2cyclictest14532-21apache_volume07:58:190
271121710,0sleep10-21swapper/108:49:311
2739899167,7cyclictest0-21swapper/108:08:181
27398991610,2cyclictest0-21swapper/107:09:531
27397991610,4cyclictest14515-21kworker/0:008:03:110
2739899154,5cyclictest0-21swapper/108:23:231
2739899152,1cyclictest0-21swapper/108:20:191
2739899151,11cyclictest0-21swapper/107:23:171
2739799141,7cyclictest20900-21/usr/sbin/munin08:13:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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