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2026-03-25 - 21:55
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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 Mar 25, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
225227057,9sleep10-21swapper/107:05:001
223326949,16sleep00-21swapper/007:04:470
166092690,0sleep10-21swapper/111:20:581
288302480,0sleep028829-21latency_hist10:54:180
2847993910,7cyclictest0-21swapper/107:34:311
2847993811,5cyclictest0-21swapper/112:26:341
2846993310,19cyclictest0-21swapper/008:09:000
2847993210,3cyclictest0-21swapper/110:18:131
2847993010,7cyclictest0-21swapper/110:09:371
2847992810,7cyclictest0-21swapper/110:04:371
2846992818,4cyclictest12683-21apache209:41:330
2847992710,9cyclictest0-21swapper/112:02:411
284799270,23cyclictest16696-21diskmemload11:38:021
2846992710,6cyclictest0-21swapper/010:38:310
284799266,19cyclictest0-21swapper/110:24:181
284799250,15cyclictest0-21swapper/109:59:381
284699253,21cyclictest0-21swapper/010:41:570
284699251,23cyclictest32210-21kworker/u4:212:12:530
284799246,8cyclictest0-21swapper/109:04:321
284799243,8cyclictest8097-21ntp_states10:24:361
284799243,4cyclictest0-21swapper/111:14:401
284799242,21cyclictest28509-21fschecks_time09:24:321
284799242,21cyclictest0-21swapper/109:39:341
2847992420,3cyclictest705-21ntpd08:26:111
2847992419,3cyclictest12683-21apache209:10:011
2847992410,4cyclictest0-21swapper/112:05:431
284699243,3cyclictest0-21swapper/010:21:300
2846992414,3cyclictest100250irq/107-eth1-rx10:27:460
2846992410,3cyclictest0-21swapper/010:46:200
2847992314,6cyclictest100250irq/107-eth1-rx09:38:041
2847992314,3cyclictest705-21ntpd10:47:191
2847992310,7cyclictest0-21swapper/111:13:571
2847992310,10cyclictest6566-21sendmail-msp07:19:191
2846992323,0cyclictest0-21swapper/012:02:230
284699231,0cyclictest14968-21fschecks_count11:19:310
2846992310,1cyclictest25055-21ssh12:18:140
2846992310,13cyclictest0-21swapper/012:23:160
284799224,7cyclictest0-21swapper/110:53:251
2847992218,2cyclictest0-21swapper/111:44:271
2847992216,5cyclictest12683-21apache211:52:561
2847992216,3cyclictest100150irq/106-eth1-rx12:17:251
2847992213,3cyclictest0-21swapper/107:24:291
2847992210,10cyclictest0-21swapper/110:32:301
284699223,7cyclictest0-21swapper/009:29:320
2846992215,3cyclictest0-21swapper/008:32:220
2846992211,6cyclictest0-21swapper/011:05:140
2846992210,6cyclictest0-21swapper/011:17:590
2846992210,4cyclictest0-21swapper/007:39:370
2846992210,2cyclictest0-21swapper/009:35:570
2846992210,1cyclictest0-21swapper/009:54:340
284799219,6cyclictest12683-21apache209:31:351
284799213,4cyclictest0-21swapper/107:42:431
2847992121,0cyclictest0-21swapper/112:19:521
2847992118,2cyclictest802-21apache207:54:221
2847992110,3cyclictest0-21swapper/108:54:331
2847992110,3cyclictest0-21swapper/108:14:381
284699212,5cyclictest16696-21diskmemload12:29:290
2846992121,0cyclictest100150irq/106-eth1-rx11:13:000
2846992120,1cyclictest0-21swapper/008:22:570
284699211,7cyclictest31753-21ssh12:27:220
2846992110,7cyclictest0-21swapper/008:24:320
2846992110,6cyclictest0-21swapper/012:38:250
2846992110,6cyclictest0-21swapper/008:34:310
2846992110,2cyclictest0-21swapper/009:09:250
3130322010,0sleep10-21swapper/111:41:241
284799207,7cyclictest0-21swapper/108:29:371
284799205,9cyclictest0-21swapper/108:34:381
284799205,7cyclictest0-21swapper/109:14:301
284799205,11cyclictest0-21swapper/110:34:341
2847992015,3cyclictest12683-21apache211:33:211
2847992011,5cyclictest12655-21apache207:53:431
284699204,11cyclictest0-21swapper/007:44:390
2846992020,0cyclictest0-21swapper/010:29:580
2846992019,1cyclictest0-21swapper/009:07:550
2846992016,2cyclictest81ktimersoftd/011:54:300
2846992015,3cyclictest0-21swapper/009:20:530
2846992014,3cyclictest0-21swapper/012:06:520
2846992013,3cyclictest0-21swapper/010:54:350
2846992010,4cyclictest0-21swapper/011:39:130
2846992010,4cyclictest0-21swapper/010:04:490
2846992010,3cyclictest0-21swapper/007:24:300
3225521910,0sleep00-21swapper/011:43:270
284799193,9cyclictest0-21swapper/108:19:331
2847991918,1cyclictest12683-21apache212:37:171
2847991917,1cyclictest19020-21load11:24:331
2847991917,1cyclictest0-21swapper/111:05:541
2847991910,7cyclictest0-21swapper/110:54:221
2847991910,5cyclictest0-21swapper/109:44:351
2847991910,3cyclictest0-21swapper/107:13:401
2847991910,2cyclictest0-21swapper/108:04:281
284799190,10cyclictest24099-21cron08:04:191
284699195,9cyclictest0-21swapper/008:49:400
284699194,7cyclictest0-21swapper/007:49:350
2846991918,1cyclictest12655-21apache211:45:460
2846991913,5cyclictest14424-21sshd09:00:430
2846991910,4cyclictest0-21swapper/007:09:300
2846991910,3cyclictest0-21swapper/009:24:220
2846991910,3cyclictest0-21swapper/007:34:350
2846991910,2cyclictest0-21swapper/007:59:300
2846991910,0cyclictest0-21swapper/009:44:360
284699190,14cyclictest6622-21kworker/u4:008:41:570
1988621910,1sleep10-21swapper/112:09:451
284799183,12cyclictest0-21swapper/107:19:371
284799183,11cyclictest0-21swapper/110:39:381
284799182,8cyclictest0-21swapper/109:19:311
2847991810,3cyclictest0-21swapper/111:54:301
284799180,1cyclictest0-21swapper/112:32:521
284699185,6cyclictest0-21swapper/009:14:580
284699184,6cyclictest0-21swapper/011:49:300
2846991812,4cyclictest100150irq/106-eth1-rx08:09:380
2846991811,0cyclictest16696-21diskmemload10:10:580
2846991810,3cyclictest0-21swapper/011:29:330
2846991810,3cyclictest0-21swapper/010:18:550
2846991810,3cyclictest0-21swapper/010:00:230
2846991810,3cyclictest0-21swapper/009:49:310
2846991810,2cyclictest0-21swapper/011:24:280
284799174,12cyclictest0-21swapper/107:44:361
2847991710,4cyclictest0-21swapper/108:39:301
2847991710,2cyclictest0-21swapper/108:44:311
2847991710,1cyclictest0-21swapper/109:54:291
284699173,9cyclictest0-21swapper/007:29:330
2846991717,0cyclictest0-21swapper/007:19:390
2846991710,1cyclictest0-21swapper/008:54:340
284799166,4cyclictest636-21nscd07:29:311
284799163,10cyclictest0-21swapper/109:02:291
2847991610,5cyclictest3427-21kworker/1:008:49:381
2847991610,4cyclictest0-21swapper/109:51:371
2847991610,1cyclictest0-21swapper/108:09:301
2847991610,0cyclictest100250irq/107-eth1-rx11:04:191
284699162,10cyclictest0-21swapper/010:59:290
2846991610,6cyclictest0-21swapper/008:44:320
2846991610,4cyclictest0-21swapper/007:55:210
284699152,7cyclictest0-21swapper/007:14:310
284699142,6cyclictest0-21swapper/008:14:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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