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2026-08-26 - 21:52
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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 highest latencies:
System rackcslot2.osadl.org (updated Wed Aug 26, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1654227049,8sleep00-21swapper/007:05:200
1647227057,8sleep10-21swapper/107:04:351
16987993610,25cyclictest0-21swapper/108:50:271
16987993310,0cyclictest0-21swapper/109:02:071
16986993023,3cyclictest3980-21sh12:19:040
16987992910,14cyclictest0-21swapper/110:53:141
16986992928,1cyclictest0-21swapper/009:30:120
1698699290,1cyclictest12688-21/usr/sbin/munin12:33:190
16987992822,3cyclictest1199-21runrttasks12:01:451
16986992710,15cyclictest0-21swapper/010:35:480
16987992626,0cyclictest0-21swapper/109:31:481
16987992617,5cyclictest0-21swapper/112:07:101
16987992613,3cyclictest0-21swapper/110:28:591
1698699261,5cyclictest0-21swapper/008:38:230
16986992610,15cyclictest0-21swapper/012:32:450
16987992522,3cyclictest231ktimersoftd/108:41:061
16987992516,4cyclictest26828-21apache210:37:201
16987992510,2cyclictest0-21swapper/112:31:051
16986992510,10cyclictest0-21swapper/012:03:230
1698799245,12cyclictest0-21swapper/109:58:221
16987992410,4cyclictest0-21swapper/107:23:201
1698799240,24cyclictest0-21swapper/110:13:301
1698699243,5cyclictest30882-21diskmemload11:13:160
1698699241,19cyclictest0-21swapper/010:23:540
1698699240,18cyclictest0-21swapper/009:18:230
16987992323,0cyclictest0-21swapper/107:48:281
16987992317,4cyclictest947-21sendmail-mta10:03:551
16987992310,1cyclictest0-21swapper/110:42:541
16986992323,0cyclictest0-21swapper/009:49:020
16986992310,7cyclictest0-21swapper/011:30:490
16987992222,0cyclictest0-21swapper/110:59:261
16987992220,1cyclictest636-21nscd09:18:091
16987992218,3cyclictest26823-21apache211:40:551
16987992218,2cyclictest26823-21apache208:53:451
1698799221,16cyclictest0-21swapper/111:06:471
16987992210,3cyclictest0-21swapper/107:58:161
16987992210,11cyclictest0-21swapper/111:35:351
1698699224,7cyclictest0-21swapper/010:08:220
1698699223,11cyclictest0-21swapper/008:13:140
16986992216,3cyclictest26828-21apache212:03:000
16986992211,3cyclictest0-21swapper/010:14:140
16986992211,1cyclictest23520-21entropy08:48:160
16986992210,7cyclictest0-21swapper/012:08:230
16986992210,6cyclictest0-21swapper/012:24:060
16986992210,1cyclictest0-21swapper/009:24:250
1698699220,15cyclictest0-21swapper/009:58:200
1698799216,11cyclictest0-21swapper/108:18:201
1698799214,7cyclictest29113-21/usr/sbin/munin09:03:201
1698799212,7cyclictest0-21swapper/109:08:221
16987992117,3cyclictest26823-21apache207:37:161
16987992116,3cyclictest26823-21apache207:42:281
16987992111,8cyclictest6389-21http_loadtime08:03:171
16987992110,5cyclictest0-21swapper/110:11:061
16987992110,5cyclictest0-21swapper/108:43:131
16987992110,4cyclictest0-21swapper/109:48:141
1698699214,9cyclictest0-21swapper/007:13:190
1698699212,12cyclictest0-21swapper/011:33:240
16986992117,3cyclictest26823-21apache211:24:340
16986992110,6cyclictest0-21swapper/010:03:150
16986992110,5cyclictest0-21swapper/010:31:300
16986992110,5cyclictest0-21swapper/010:18:190
16986992110,4cyclictest0-21swapper/009:07:310
16986992110,10cyclictest0-21swapper/009:53:150
1244022110,0sleep10-21swapper/111:44:511
1698799203,7cyclictest20859-21apache_processe07:18:141
1698799203,7cyclictest0-21swapper/111:08:181
1698799202,10cyclictest0-21swapper/109:33:231
16987992016,4cyclictest802-21apache211:48:511
16987992016,1cyclictest231ktimersoftd/112:13:191
16987992010,7cyclictest0-21swapper/112:26:331
16987992010,5cyclictest0-21swapper/107:28:181
16987992010,3cyclictest0-21swapper/109:43:081
1698799200,15cyclictest0-21swapper/111:23:211
1698699203,8cyclictest31901-21ntp_states09:08:200
16986992020,0cyclictest0-21swapper/011:53:210
16986992013,1cyclictest0-21swapper/007:36:030
16986992012,4cyclictest81ktimersoftd/010:48:160
16986992010,6cyclictest0-21swapper/008:43:130
16986992010,3cyclictest0-21swapper/008:58:140
2723121910,0sleep00-21swapper/011:19:320
1698799192,12cyclictest1199-21runrttasks08:25:091
16987991915,2cyclictest20505-21sh09:38:171
16987991912,6cyclictest0-21swapper/108:13:251
16987991910,7cyclictest0-21swapper/109:25:071
16987991910,5cyclictest0-21swapper/111:31:401
16987991910,5cyclictest0-21swapper/111:13:571
16987991910,5cyclictest0-21swapper/109:53:161
16987991910,4cyclictest0-21swapper/112:22:381
16987991910,3cyclictest0-21swapper/110:48:151
16987991910,3cyclictest0-21swapper/107:53:201
16987991910,2cyclictest0-21swapper/111:18:351
16987991910,0cyclictest0-21swapper/109:14:211
1698799190,13cyclictest0-21swapper/108:08:191
1698699196,12cyclictest0-21swapper/011:38:170
1698699193,9cyclictest0-21swapper/008:18:190
16986991910,8cyclictest0-21swapper/008:33:190
16986991910,5cyclictest0-21swapper/011:08:100
16986991910,5cyclictest0-21swapper/009:33:160
16986991910,4cyclictest0-21swapper/009:41:060
16986991910,3cyclictest0-21swapper/008:08:230
16986991910,3cyclictest0-21swapper/007:08:160
16986991910,2cyclictest0-21swapper/007:43:150
184221810,2sleep00-21swapper/007:51:220
1698799183,10cyclictest0-21swapper/108:28:151
1698799181,10cyclictest0-21swapper/110:18:211
16987991810,6cyclictest0-21swapper/111:53:231
16987991810,5cyclictest0-21swapper/108:33:181
16987991810,0cyclictest0-21swapper/110:24:221
1698799180,5cyclictest20776-21latency_hist07:18:031
1698699184,8cyclictest0-21swapper/007:38:190
1698699183,7cyclictest0-21swapper/009:13:460
1698699182,2cyclictest24479-21snmpd10:43:230
16986991814,3cyclictest26823-21apache209:44:210
16986991810,5cyclictest0-21swapper/011:07:460
16986991810,4cyclictest0-21swapper/011:48:190
16986991810,4cyclictest0-21swapper/010:38:130
16986991810,4cyclictest0-21swapper/007:58:130
16986991810,3cyclictest0-21swapper/008:23:140
1254021810,0sleep00-21swapper/011:45:040
1698799176,10cyclictest0-21swapper/107:43:171
16987991712,2cyclictest12199-1kworker/u5:012:36:441
16986991715,1cyclictest21281-21if_err_eth107:18:170
1698699171,10cyclictest11430-21apache_processe10:58:160
16986991710,4cyclictest0-21swapper/010:54:250
16986991710,3cyclictest0-21swapper/012:14:310
16986991710,2cyclictest0-21swapper/008:29:000
16986991710,2cyclictest0-21swapper/007:30:030
16987991610,6cyclictest0-21swapper/112:12:181
16987991610,5cyclictest0-21swapper/107:08:211
16987991610,2cyclictest0-21swapper/110:44:211
1698699162,8cyclictest0-21swapper/008:03:220
1698699162,8cyclictest0-21swapper/007:23:130
16986991610,1cyclictest0-21swapper/008:53:160
1698699145,6cyclictest0-21swapper/007:53:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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