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2026-04-27 - 08:12
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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 Mon Apr 27, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
474726956,8sleep10-21swapper/119:06:441
322726754,8sleep00-21swapper/019:04:140
5152993013,16cyclictest0-21swapper/019:36:500
5152992810,17cyclictest0-21swapper/023:36:200
515399270,7cyclictest8385-21grep23:39:211
5152992726,0cyclictest0-21swapper/021:56:190
415122710,14sleep10-21swapper/122:11:191
5153992626,0cyclictest0-21swapper/100:36:211
5153992625,0cyclictest0-21swapper/100:10:021
5153992619,4cyclictest0-21swapper/122:20:051
5153992610,9cyclictest0-21swapper/120:19:221
5152992625,0cyclictest0-21swapper/022:04:490
5152992624,1cyclictest10164-21fschecks_count22:19:180
5152992516,6cyclictest30430-21apache200:15:460
5152992510,5cyclictest0-21swapper/021:44:180
515399244,13cyclictest0-21swapper/120:29:181
5153992422,1cyclictest0-21swapper/123:59:511
5153992419,2cyclictest0-21swapper/123:16:231
5153992410,1cyclictest0-21swapper/123:45:551
5152992420,4cyclictest30430-21apache222:58:280
5152992415,8cyclictest30430-21apache222:45:520
515399234,12cyclictest0-21swapper/121:04:201
5153992321,1cyclictest25643-21kworker/u4:021:16:271
5153992320,2cyclictest0-21swapper/122:27:371
5153992312,5cyclictest30413-21apache219:35:371
515399231,20cyclictest0-21swapper/119:43:241
5153992310,6cyclictest0-21swapper/121:24:511
5153992310,5cyclictest0-21swapper/120:54:241
515299235,11cyclictest0-21swapper/020:34:240
5152992318,3cyclictest611-21systemd-logind19:22:500
5152992311,6cyclictest3544-21/usr/sbin/munin20:29:170
5152992311,5cyclictest0-21swapper/000:21:220
5152992310,4cyclictest0-21swapper/023:27:380
5152992310,12cyclictest30430-21apache221:42:010
515399223,9cyclictest0-21swapper/119:09:201
515399223,18cyclictest0-21swapper/123:52:221
5153992222,0cyclictest0-21swapper/123:28:391
5153992219,1cyclictest7138-21diskstats21:34:171
5153992210,6cyclictest0-21swapper/121:59:181
5153992210,4cyclictest0-21swapper/121:45:531
5153992210,1cyclictest0-21swapper/120:03:291
5152992215,5cyclictest30413-21apache223:53:190
5152992210,7cyclictest0-21swapper/022:30:530
5152992210,6cyclictest0-21swapper/021:34:170
5152992210,5cyclictest0-21swapper/023:54:230
5152992210,4cyclictest0-21swapper/000:25:380
5152992210,3cyclictest0-21swapper/023:29:060
5152992210,1cyclictest0-21swapper/021:23:180
515299220,3cyclictest0-21swapper/021:52:190
5153992119,1cyclictest30430-21apache221:50:371
5153992117,2cyclictest231ktimersoftd/100:26:301
5153992110,6cyclictest0-21swapper/100:07:361
5153992110,5cyclictest0-21swapper/122:29:151
5153992110,5cyclictest0-21swapper/100:19:251
5153992110,4cyclictest0-21swapper/123:19:531
5153992110,3cyclictest0-21swapper/122:59:241
515299214,8cyclictest0-21swapper/019:39:170
5152992111,8cyclictest0-21swapper/023:59:220
5152992110,6cyclictest0-21swapper/021:12:460
5152992110,4cyclictest0-21swapper/023:39:160
5152992110,1cyclictest0-21swapper/000:38:160
5152992110,0cyclictest0-21swapper/021:33:570
1284522110,1sleep10-21swapper/121:41:021
515399206,11cyclictest0-21swapper/123:29:161
5153992018,1cyclictest0-21swapper/122:54:481
5153992012,6cyclictest636-21nscd00:17:121
5153992012,3cyclictest30413-21apache221:57:371
5153992011,8cyclictest0-21swapper/123:04:291
5153992010,6cyclictest0-21swapper/121:23:091
5153992010,4cyclictest0-21swapper/123:54:161
5153992010,4cyclictest0-21swapper/120:14:161
5153992010,3cyclictest0-21swapper/122:41:271
5153992010,2cyclictest0-21swapper/122:34:161
515299205,9cyclictest0-21swapper/020:24:220
515299204,9cyclictest0-21swapper/021:14:200
5152992020,0cyclictest0-21swapper/019:10:390
5152992010,7cyclictest0-21swapper/022:10:250
5152992010,7cyclictest0-21swapper/020:22:330
5152992010,5cyclictest0-21swapper/023:20:000
5152992010,2cyclictest0-21swapper/022:27:330
515399199,3cyclictest1199-21runrttasks19:51:381
515399196,6cyclictest18735-21diskmemload23:35:441
515399194,10cyclictest30430-21apache222:08:381
515399192,1cyclictest0-21swapper/120:09:251
5153991916,3cyclictest0-21swapper/100:29:101
5153991910,7cyclictest0-21swapper/122:49:571
5153991910,2cyclictest0-21swapper/123:09:081
5153991910,2cyclictest0-21swapper/122:49:011
5153991910,2cyclictest0-21swapper/121:29:061
5153991910,0cyclictest0-21swapper/121:11:111
515299195,10cyclictest0-21swapper/020:59:170
515299194,9cyclictest0-21swapper/020:14:180
515299194,11cyclictest0-21swapper/019:14:160
515299193,4cyclictest0-21swapper/021:26:530
515299193,10cyclictest0-21swapper/022:00:440
515299192,5cyclictest0-21swapper/020:04:170
5152991917,2cyclictest5150-21cyclictest22:59:310
5152991916,2cyclictest2984-21ssh22:50:490
5152991915,4cyclictest5150-21cyclictest23:09:590
5152991915,4cyclictest0-21swapper/019:53:040
5152991910,7cyclictest0-21swapper/022:36:110
5152991910,5cyclictest18436-21kworker/0:120:45:070
5152991910,4cyclictest0-21swapper/023:05:060
5152991910,4cyclictest0-21swapper/000:32:300
3189921910,0sleep00-21swapper/000:09:490
515399182,8cyclictest0-21swapper/120:59:171
5153991817,1cyclictest0-21swapper/122:14:581
5153991814,2cyclictest5150-21cyclictest20:38:241
5153991810,4cyclictest0-21swapper/119:44:141
5153991810,0cyclictest0-21swapper/119:14:251
515399180,8cyclictest9038-21apache_volume19:19:171
515299185,7cyclictest0-21swapper/023:14:250
515299183,6cyclictest0-21swapper/019:29:230
5152991813,3cyclictest802-21apache200:08:350
515299181,14cyclictest0-21swapper/022:39:130
73182170,0sleep00-21swapper/022:14:410
515399175,11cyclictest0-21swapper/120:39:251
515399173,6cyclictest0-21swapper/120:45:071
515399173,5cyclictest0-21swapper/120:49:171
515399172,10cyclictest0-21swapper/119:24:181
5153991710,3cyclictest0-21swapper/120:04:181
515299174,6cyclictest0-21swapper/019:44:140
5152991710,4cyclictest0-21swapper/020:39:160
5152991710,4cyclictest0-21swapper/019:24:180
5152991710,2cyclictest0-21swapper/021:04:260
2972821710,0sleep00-21swapper/020:11:550
1285321710,0sleep10-21swapper/119:29:161
5153991610,3cyclictest0-21swapper/120:24:201
515399160,15cyclictest0-21swapper/119:54:251
515299165,5cyclictest0-21swapper/019:59:200
5152991611,3cyclictest0-21swapper/019:54:160
5152991610,3cyclictest0-21swapper/020:54:170
5152991511,2cyclictest0-21swapper/020:50:050
5152991410,2cyclictest0-21swapper/023:44:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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