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2026-08-25 - 20:19
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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 Tue Aug 25, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
173102750,2sleep12198399cyclictest08:18:171
2161126957,8sleep10-21swapper/107:06:071
2159826654,8sleep00-21swapper/007:05:580
179902540,1sleep117988-21ssh09:28:161
21983993232,0cyclictest0-21swapper/111:59:091
21983992922,0cyclictest24-21ksoftirqd/108:03:161
2198399290,27cyclictest0-21swapper/109:21:371
2198399280,21cyclictest0-21swapper/110:03:401
21982992827,0cyclictest0-21swapper/007:56:260
21982992810,17cyclictest0-21swapper/011:20:030
2198299280,1cyclictest0-21swapper/010:38:210
21982992525,0cyclictest0-21swapper/011:40:010
21982992523,1cyclictest0-21swapper/009:28:530
21982992510,14cyclictest0-21swapper/009:34:110
21983992423,0cyclictest24-21ksoftirqd/109:58:191
21983992422,0cyclictest24-21ksoftirqd/109:33:161
21983992415,4cyclictest0-21swapper/111:35:281
21983992410,2cyclictest0-21swapper/110:35:541
2198299246,17cyclictest14489-21/usr/sbin/munin09:23:230
2198299244,7cyclictest0-21swapper/012:08:150
2198299242,15cyclictest0-21swapper/011:13:080
21982992417,3cyclictest0-21swapper/010:17:120
21982992413,11cyclictest0-21swapper/008:46:170
2198299241,22cyclictest0-21swapper/011:36:520
21982992410,6cyclictest0-21swapper/010:33:480
2198399234,14cyclictest0-21swapper/107:23:171
2198399233,8cyclictest0-21swapper/108:43:211
2198399233,18cyclictest31891-21/usr/sbin/munin11:18:251
21983992321,1cyclictest636-21nscd10:11:011
2198399231,3cyclictest0-21swapper/110:21:291
21983992311,3cyclictest0-21swapper/108:53:151
21982992318,2cyclictest81ktimersoftd/010:03:220
21982992311,6cyclictest1695-21/usr/sbin/munin09:03:190
21982992310,6cyclictest0-21swapper/009:15:050
21982992310,5cyclictest0-21swapper/012:04:090
21982992310,0cyclictest0-21swapper/009:53:030
2198299230,1cyclictest0-21swapper/012:23:160
21983992221,1cyclictest24-21ksoftirqd/109:42:421
21983992221,0cyclictest24-21ksoftirqd/107:58:031
21983992220,1cyclictest31817-21apache210:31:521
21983992220,1cyclictest24-21ksoftirqd/111:40:171
21983992210,4cyclictest0-21swapper/112:36:151
21983992210,10cyclictest0-21swapper/111:28:101
2198299223,8cyclictest0-21swapper/009:43:190
21982992222,0cyclictest100250irq/107-eth1-rx11:31:450
21982992220,1cyclictest31791-21apache209:21:260
21982992217,3cyclictest31791-21apache208:28:200
21982992210,11cyclictest0-21swapper/012:20:010
2685022110,0sleep00-21swapper/009:39:220
2198399217,7cyclictest0-21swapper/108:13:221
2198399215,9cyclictest0-21swapper/107:18:151
2198399212,2cyclictest91rcu_preempt09:02:241
2198399212,19cyclictest0-21swapper/112:27:121
21983992119,1cyclictest636-21nscd10:53:501
21983992114,4cyclictest0-21swapper/110:23:241
21983992110,8cyclictest0-21swapper/111:51:221
21983992110,7cyclictest0-21swapper/109:48:161
21983992110,6cyclictest0-21swapper/111:01:101
21983992110,5cyclictest0-21swapper/110:17:211
2198399210,11cyclictest0-21swapper/110:38:181
2198299216,8cyclictest1420-21sshd07:38:110
2198299215,14cyclictest0-21swapper/008:58:180
2198299213,9cyclictest0-21swapper/007:23:160
21982992121,0cyclictest0-21swapper/010:18:100
21982992110,5cyclictest0-21swapper/010:58:560
383322010,0sleep10-21swapper/112:12:571
3099922010,0sleep10-21swapper/112:03:501
2198399207,5cyclictest12923-21apache_processe08:08:151
2198399205,8cyclictest0-21swapper/108:48:151
2198399203,2cyclictest91rcu_preempt07:28:211
2198399202,4cyclictest91rcu_preempt08:25:551
2198399202,1cyclictest91rcu_preempt11:06:441
21983992014,4cyclictest100250irq/107-eth1-rx12:22:491
2198399201,14cyclictest1199-21runrttasks09:06:021
21983992011,0cyclictest0-21swapper/112:14:341
21983992010,5cyclictest0-21swapper/109:13:181
21983992010,3cyclictest24-21ksoftirqd/110:51:121
21983992010,3cyclictest0-21swapper/111:53:161
21983992010,2cyclictest0-21swapper/109:45:331
2198299202,11cyclictest0-21swapper/007:48:160
21982992010,7cyclictest0-21swapper/008:55:320
21982992010,5cyclictest0-21swapper/011:48:160
21982992010,5cyclictest0-21swapper/008:33:190
21982992010,4cyclictest636-21nscd10:54:450
2198299200,1cyclictest0-21swapper/012:15:300
2198299200,18cyclictest3448-21diskmemload09:11:110
2198399195,8cyclictest0-21swapper/109:27:541
21983991918,1cyclictest231ktimersoftd/107:33:051
21983991917,1cyclictest24-21ksoftirqd/107:43:161
21983991917,1cyclictest0-21swapper/111:47:251
21983991915,3cyclictest31817-21apache209:12:221
21983991911,5cyclictest100150irq/106-eth1-rx11:27:421
21983991910,7cyclictest0-21swapper/107:08:171
2198299193,12cyclictest0-21swapper/010:28:130
21982991919,0cyclictest0-21swapper/010:48:280
21982991918,0cyclictest0-21swapper/009:53:160
21982991914,2cyclictest15712-21seq10:09:290
21982991912,3cyclictest3448-21diskmemload10:45:460
21982991910,5cyclictest0-21swapper/008:38:210
21982991910,3cyclictest0-21swapper/011:08:420
21982991910,3cyclictest0-21swapper/008:18:220
2198399182,9cyclictest0-21swapper/112:28:251
21983991818,0cyclictest0-21swapper/108:28:221
21983991817,1cyclictest0-21swapper/108:39:511
2198399181,1cyclictest91rcu_preempt11:16:431
21983991810,7cyclictest0-21swapper/110:44:321
21983991810,7cyclictest0-21swapper/107:58:141
21983991810,6cyclictest0-21swapper/111:09:471
21983991810,5cyclictest0-21swapper/109:53:231
2198299188,8cyclictest31791-21apache211:45:260
2198299185,8cyclictest0-21swapper/008:23:200
2198299184,8cyclictest0-21swapper/011:05:290
21982991818,0cyclictest0-21swapper/007:29:220
21982991817,1cyclictest17263-21apache207:10:130
21982991810,4cyclictest0-21swapper/011:58:240
21982991810,3cyclictest0-21swapper/009:58:180
21982991810,1cyclictest0-21swapper/008:48:150
21982991810,0cyclictest0-21swapper/012:29:340
2198399174,7cyclictest22791-21/usr/sbin/munin08:33:161
21983991715,1cyclictest24-21ksoftirqd/107:42:021
21983991712,3cyclictest24-21ksoftirqd/107:48:151
2198299174,6cyclictest0-21swapper/007:13:150
21982991710,4cyclictest0-21swapper/008:13:220
21982991710,1cyclictest0-21swapper/012:33:210
21983991614,1cyclictest24-21ksoftirqd/107:15:571
2198299162,3cyclictest0-21swapper/010:27:120
21982991610,3cyclictest0-21swapper/007:33:240
21982991610,2cyclictest0-21swapper/011:25:370
21982991610,2cyclictest0-21swapper/007:43:160
21982991610,1cyclictest0-21swapper/011:53:260
2198299155,7cyclictest0-21swapper/007:58:130
2198299155,4cyclictest0-21swapper/007:18:160
21982991510,1cyclictest0-21swapper/008:03:150
21982991410,0cyclictest0-21swapper/008:10:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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