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2026-03-15 - 22:19
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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 Sun Mar 15, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2215827057,8sleep10-21swapper/107:08:421
2193727047,18sleep00-21swapper/007:06:240
113432650,0sleep10-21swapper/110:47:181
228662600,2sleep02240799cyclictest11:48:370
22407993011,3cyclictest25867-21kworker/u4:109:40:230
2240899280,4cyclictest91rcu_preempt12:25:111
2240899280,4cyclictest91rcu_preempt12:25:111
22408992718,5cyclictest32253-21apache212:09:171
22408992710,10cyclictest0-21swapper/110:38:031
2240799270,2cyclictest0-21swapper/010:51:130
22408992610,16cyclictest0-21swapper/111:58:401
22408992510,9cyclictest0-21swapper/109:29:391
22408992510,8cyclictest0-21swapper/110:19:351
2240899250,1cyclictest5380-21apache_volume11:24:361
22408992410,9cyclictest0-21swapper/110:24:441
22408992410,8cyclictest0-21swapper/109:41:071
22408992410,0cyclictest0-21swapper/112:13:171
2240899240,23cyclictest0-21swapper/111:29:381
2240799244,11cyclictest0-21swapper/009:09:440
22407992411,5cyclictest3216-21ssh11:20:020
22408992311,4cyclictest0-21swapper/109:24:401
22408992310,5cyclictest0-21swapper/107:14:341
22408992310,2cyclictest0-21swapper/111:08:041
2240899230,10cyclictest16273-21ssh11:39:361
2240799233,2cyclictest0-21swapper/012:25:280
2240799233,2cyclictest0-21swapper/012:25:280
2240799232,3cyclictest0-21swapper/012:18:030
22407992323,0cyclictest0-21swapper/008:47:590
22407992313,1cyclictest12227-21sh10:04:290
22407992311,1cyclictest0-21swapper/012:23:240
2240799230,13cyclictest0-21swapper/009:29:420
2240899224,12cyclictest0-21swapper/108:59:371
22408992214,6cyclictest32227-21apache209:09:281
22408992214,3cyclictest32253-21apache211:13:171
2240899221,20cyclictest0-21swapper/111:59:361
22408992210,6cyclictest0-21swapper/108:44:581
22408992210,6cyclictest0-21swapper/108:36:461
22408992210,4cyclictest0-21swapper/109:49:391
22407992221,0cyclictest7-21ksoftirqd/010:34:360
22407992217,4cyclictest100150irq/106-eth1-rx10:56:010
22407992213,5cyclictest81ktimersoftd/010:09:390
22407992211,8cyclictest0-21swapper/010:44:090
22407992210,5cyclictest0-21swapper/009:54:300
2240799220,20cyclictest0-21swapper/008:19:360
2226522210,0sleep10-21swapper/111:47:151
2240899217,9cyclictest0-21swapper/110:59:341
2240899212,18cyclictest0-21swapper/110:42:041
2240799217,7cyclictest26662-21munin-run08:44:240
2240799213,16cyclictest0-21swapper/009:15:560
22407992120,1cyclictest32253-21apache211:27:140
22407992118,2cyclictest32227-21apache211:56:020
22407992111,4cyclictest0-21swapper/010:19:550
22407992110,6cyclictest0-21swapper/010:29:380
22407992110,5cyclictest0-21swapper/007:33:430
22407992110,4cyclictest0-21swapper/011:04:330
22407992110,1cyclictest0-21swapper/011:51:510
2240799210,17cyclictest100250irq/107-eth1-rx09:53:580
2240799210,11cyclictest32250-21apache208:04:340
2240899209,5cyclictest32546-21df07:34:351
2240899208,3cyclictest0-21swapper/110:54:421
2240899205,9cyclictest0-21swapper/107:09:371
22408992019,1cyclictest32257-21kworker/1:007:54:181
22408992015,4cyclictest100150irq/106-eth1-rx10:08:521
22408992012,2cyclictest0-21swapper/111:14:341
22408992010,5cyclictest0-21swapper/107:39:361
22408992010,4cyclictest0-21swapper/109:34:341
22408992010,2cyclictest0-21swapper/108:19:401
2240799205,7cyclictest0-21swapper/009:19:430
2240799204,9cyclictest0-21swapper/012:09:350
2240799204,7cyclictest0-21swapper/009:04:400
2240799202,12cyclictest0-21swapper/011:39:370
22407992013,3cyclictest20070-21/usr/sbin/munin08:24:420
22407992010,5cyclictest0-21swapper/011:14:350
22407992010,5cyclictest0-21swapper/007:44:360
22407992010,0cyclictest0-21swapper/008:37:020
2240799200,17cyclictest0-21swapper/009:38:300
1416622010,0sleep00-21swapper/011:35:260
670121910,0sleep10-21swapper/109:55:431
3276321910,0sleep00-21swapper/009:47:430
2240899197,9cyclictest0-21swapper/109:14:351
2240899194,8cyclictest0-21swapper/112:34:341
2240899194,4cyclictest19421-21apache_processe10:14:351
2240899193,13cyclictest0-21swapper/107:29:361
2240899193,12cyclictest0-21swapper/108:54:421
2240899191,17cyclictest0-21swapper/110:01:441
22408991910,7cyclictest0-21swapper/111:38:211
22408991910,6cyclictest0-21swapper/112:14:421
22408991910,4cyclictest0-21swapper/111:19:341
22408991910,3cyclictest0-21swapper/112:29:361
22408991910,3cyclictest0-21swapper/109:44:421
22408991910,2cyclictest0-21swapper/109:19:351
22408991910,0cyclictest0-21swapper/112:21:031
2240799193,12cyclictest0-21swapper/008:49:350
2240799191,3cyclictest30735-21ssh11:59:260
22407991912,3cyclictest32227-21apache207:39:320
22407991911,4cyclictest100150irq/106-eth1-rx07:49:380
22407991910,9cyclictest0-21swapper/009:24:350
22407991910,5cyclictest0-21swapper/010:59:430
1497021910,0sleep10-21swapper/108:12:491
1120121910,0sleep00-21swapper/008:03:230
2240899181,7cyclictest0-21swapper/108:04:351
22408991816,1cyclictest2705-21awk09:04:381
22408991812,4cyclictest100250irq/107-eth1-rx07:46:461
22408991811,4cyclictest100250irq/107-eth1-rx10:11:401
22408991810,4cyclictest0-21swapper/111:50:151
22408991810,4cyclictest0-21swapper/110:49:291
22408991810,3cyclictest0-21swapper/107:19:341
2240799183,6cyclictest0-21swapper/012:39:190
2240799182,1cyclictest28207-21wc07:24:340
22407991816,2cyclictest22405-21cyclictest10:26:340
22407991810,3cyclictest0-21swapper/012:29:390
2249821710,1sleep10-21swapper/108:31:141
2240899176,8cyclictest0-21swapper/107:59:231
2240899174,3cyclictest167-21systemd-journal08:17:451
22408991710,1cyclictest0-21swapper/108:53:541
2240899170,10cyclictest0-21swapper/108:39:401
2240799174,7cyclictest0-21swapper/007:09:400
22407991717,0cyclictest32253-21apache210:46:190
22407991716,0cyclictest1599-21chrt07:38:220
22407991712,3cyclictest1199-21runrttasks08:33:040
2240799171,14cyclictest0-21swapper/009:59:390
2240799171,11cyclictest9896-21ntp_states11:29:420
2240799171,11cyclictest0-21swapper/010:14:350
22407991710,3cyclictest0-21swapper/012:04:440
22407991710,3cyclictest0-21swapper/008:19:230
22407991710,2cyclictest0-21swapper/007:54:430
22407991710,0cyclictest0-21swapper/008:54:370
3176521610,0sleep10-21swapper/110:29:591
22408991610,2cyclictest0-21swapper/107:24:431
2240899160,8cyclictest0-21swapper/108:24:361
2240799169,3cyclictest28433-21sh11:09:580
2240799167,3cyclictest1528-21users08:59:430
2240799164,7cyclictest0-21swapper/007:19:340
2240799163,6cyclictest13497-21cpuspeed_turbos08:09:360
954221510,0sleep10-21swapper/107:59:251
2240799151,9cyclictest24971-21ls07:14:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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