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2026-03-19 - 15:35
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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 Thu Mar 19, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2868527250,17sleep10-21swapper/107:08:321
2851526754,8sleep00-21swapper/007:06:440
28947993130,0cyclictest24-21ksoftirqd/109:19:041
28947993010,0cyclictest0-21swapper/109:56:591
2894799300,1cyclictest0-21swapper/111:24:301
28947992928,0cyclictest24-21ksoftirqd/112:39:221
28947992928,0cyclictest24-21ksoftirqd/111:09:321
2894799290,3cyclictest91rcu_preempt11:39:381
28946992923,3cyclictest0-21swapper/010:39:400
2894799284,2cyclictest91rcu_preempt12:13:061
28947992810,12cyclictest0-21swapper/107:59:351
2894799280,6cyclictest24-21ksoftirqd/110:02:351
28946992727,0cyclictest0-21swapper/007:41:060
705522610,0sleep10-21swapper/112:01:381
2894799260,3cyclictest91rcu_preempt10:10:121
28946992625,1cyclictest0-21swapper/011:16:070
28946992610,9cyclictest0-21swapper/012:16:350
2894699260,1cyclictest0-21swapper/011:39:070
28947992520,4cyclictest24-21ksoftirqd/111:05:471
28947992518,5cyclictest91rcu_preempt11:29:351
28947992512,4cyclictest91rcu_preempt11:21:161
28947992510,7cyclictest0-21swapper/107:24:011
2894799250,9cyclictest30182-21ssh11:49:341
2894799250,8cyclictest0-21swapper/111:54:411
2894799250,3cyclictest0-21swapper/109:48:101
28946992510,7cyclictest0-21swapper/010:44:410
2894699250,23cyclictest10798-21expr09:09:320
2894799246,4cyclictest91rcu_preempt12:06:161
2894799242,4cyclictest91rcu_preempt10:54:171
28947992421,2cyclictest0-21swapper/110:24:391
28947992417,2cyclictest24-21ksoftirqd/111:04:161
28947992410,8cyclictest0-21swapper/110:22:041
28947992410,5cyclictest0-21swapper/110:04:251
2894799240,7cyclictest7842-21grep08:59:431
28946992411,6cyclictest0-21swapper/007:09:360
28946992410,12cyclictest0-21swapper/010:31:560
2894799233,3cyclictest91rcu_preempt11:44:391
28947992322,1cyclictest231ktimersoftd/109:29:481
2894799232,12cyclictest0-21swapper/108:04:401
28947992317,4cyclictest24-21ksoftirqd/112:24:341
28947992317,2cyclictest0-21swapper/108:28:361
2894799231,1cyclictest91rcu_preempt09:28:201
2894699239,8cyclictest0-21swapper/008:39:330
28946992323,0cyclictest0-21swapper/007:19:340
28946992319,3cyclictest6407-21apache212:29:340
28946992318,4cyclictest802-21apache212:26:240
2894699231,0cyclictest10437-21diskmemload11:12:070
2894799228,11cyclictest24-21ksoftirqd/110:34:421
2894799224,7cyclictest0-21swapper/107:44:341
28947992222,0cyclictest24-21ksoftirqd/110:14:401
28947992220,2cyclictest0-21swapper/112:14:361
28947992215,6cyclictest0-21swapper/110:55:441
28947992210,6cyclictest0-21swapper/108:19:311
2894799220,1cyclictest91rcu_preempt12:19:371
2894699228,7cyclictest0-21swapper/007:29:310
28946992219,3cyclictest6380-21apache211:46:190
2894699221,12cyclictest545-21awk10:24:220
28946992210,0cyclictest0-21swapper/008:32:500
28947992121,0cyclictest0-21swapper/108:56:501
28947992119,1cyclictest24-21ksoftirqd/112:31:261
28947992118,1cyclictest947-21sendmail-mta07:53:541
28947992110,4cyclictest0-21swapper/109:35:151
28947992110,2cyclictest0-21swapper/110:29:291
2894699213,12cyclictest0-21swapper/008:59:430
28946992110,8cyclictest0-21swapper/009:34:150
28946992110,6cyclictest0-21swapper/009:36:430
28946992110,4cyclictest0-21swapper/011:59:340
28946992110,4cyclictest0-21swapper/008:04:350
28946992110,3cyclictest0-21swapper/012:09:330
28946992110,3cyclictest0-21swapper/011:24:330
1388122110,0sleep00-21swapper/009:57:170
329122010,0sleep00-21swapper/009:43:150
2894799209,10cyclictest0-21swapper/108:09:331
2894799205,9cyclictest0-21swapper/107:24:331
2894799205,13cyclictest0-21swapper/109:39:331
28947992017,2cyclictest9955-21users09:04:431
28947992010,2cyclictest0-21swapper/109:19:411
28947992010,2cyclictest0-21swapper/108:49:331
28947992010,0cyclictest0-21swapper/109:50:191
2894699205,7cyclictest0-21swapper/010:13:120
2894699204,10cyclictest0-21swapper/011:29:310
28946992019,1cyclictest0-21swapper/010:24:410
2894699201,13cyclictest25022-21rm09:28:410
28946992010,7cyclictest0-21swapper/007:44:450
28946992010,5cyclictest0-21swapper/010:02:510
28946992010,3cyclictest0-21swapper/011:39:380
2894799198,10cyclictest28378-21ls08:29:391
2894799195,12cyclictest10437-21diskmemload11:14:341
28947991916,2cyclictest16030-21ntp_states10:44:381
28947991915,3cyclictest14913-21ntp_states07:54:381
28947991915,3cyclictest11994-21/usr/sbin/munin10:39:331
28947991910,5cyclictest0-21swapper/107:39:321
2894799190,6cyclictest0-21swapper/108:14:321
2894699196,6cyclictest10437-21diskmemload09:47:140
2894699194,9cyclictest0-21swapper/011:04:360
28946991919,0cyclictest81ktimersoftd/012:20:170
28946991917,1cyclictest6407-21apache210:17:250
28946991915,3cyclictest6380-21apache211:56:050
28946991915,3cyclictest100250irq/107-eth1-rx10:54:300
28946991913,3cyclictest100250irq/107-eth1-rx10:37:440
28946991913,2cyclictest26619-21interrupts10:59:350
28946991910,6cyclictest0-21swapper/009:19:280
28946991910,4cyclictest0-21swapper/010:49:430
28946991910,4cyclictest0-21swapper/007:18:240
28946991910,3cyclictest0-21swapper/008:19:370
2894699190,18cyclictest0-21swapper/009:15:010
2894699190,11cyclictest0-21swapper/008:14:330
1384221910,0sleep00-21swapper/007:53:000
1229821910,0sleep10-21swapper/109:10:201
2894799183,13cyclictest0-21swapper/107:14:441
28947991816,1cyclictest19636-21irqstats11:34:361
28947991811,2cyclictest29566-21latency07:09:381
28947991810,3cyclictest0-21swapper/107:34:231
28946991812,5cyclictest0-21swapper/011:50:090
28946991810,4cyclictest0-21swapper/012:38:320
2894699180,4cyclictest0-21swapper/010:06:290
2894799173,5cyclictest2722-21perf08:49:221
2894799171,9cyclictest0-21swapper/108:39:371
28947991714,2cyclictest6059-21ls07:34:211
28947991710,2cyclictest0-21swapper/108:34:331
2894699175,8cyclictest0-21swapper/012:04:340
2894699173,4cyclictest0-21swapper/008:49:370
2894699172,9cyclictest0-21swapper/007:54:320
28946991716,1cyclictest744-21snmpd08:09:550
28946991710,4cyclictest0-21swapper/009:49:330
28946991710,4cyclictest0-21swapper/007:34:330
28946991710,1cyclictest0-21swapper/008:34:400
28946991610,2cyclictest0-21swapper/009:04:400
28946991610,0cyclictest0-21swapper/008:01:550
2894699160,8cyclictest0-21swapper/011:19:340
28946991510,1cyclictest0-21swapper/008:24:370
28946991510,0cyclictest0-21swapper/008:45:040
28946991410,2cyclictest0-21swapper/007:24:400
28946991311,1cyclictest6407-21apache208:54:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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