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2026-11-15 - 04:03
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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 Nov 15, 2026 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
298627158,8sleep00-21swapper/019:02:500
88962700,0sleep00-21swapper/022:23:060
282612700,0sleep10-21swapper/100:21:461
111952700,0sleep10-21swapper/119:27:211
303126955,9sleep10-21swapper/119:03:111
3621995251,0cyclictest29693-21gzip21:22:451
3621993627,7cyclictest100250irq/107-eth1-rx22:41:321
3621993612,2cyclictest91rcu_preempt21:56:201
3621993511,5cyclictest91rcu_preempt23:17:431
3621993413,4cyclictest91rcu_preempt21:15:281
3621993411,1cyclictest91rcu_preempt21:21:251
3621993330,2cyclictest14349-21/usr/sbin/munin20:57:431
3621993329,3cyclictest7497-21apache_processe19:17:351
3621993329,3cyclictest21803-21apache_volume22:42:351
3621993320,2cyclictest91rcu_preempt21:35:301
3620993310,3cyclictest0-21swapper/000:08:100
3621993229,2cyclictest29067-21df_inode22:52:361
3621993228,3cyclictest22193-21/usr/sbin/munin00:12:411
3621993225,3cyclictest24-21ksoftirqd/121:31:381
3621993213,3cyclictest91rcu_preempt23:32:041
3621993131,0cyclictest0-21swapper/121:58:491
3621993129,2cyclictest24-21ksoftirqd/122:51:591
3621993128,2cyclictest29588-21ntp_states23:37:431
3621993128,2cyclictest26720-21apache_processe20:07:361
3621993128,2cyclictest18853-21ntp_states23:22:401
3621993128,2cyclictest11652-21apache_volume20:52:371
3621993128,2cyclictest11605-21irqstats23:12:381
3621993128,2cyclictest11357-21/usr/sbin/munin23:57:421
3621993028,2cyclictest11747-21ls22:27:431
3621993028,1cyclictest7907-21irqstats21:37:411
3621993028,1cyclictest7723-21irqstats23:52:411
3621993028,1cyclictest3922-21apache_accesses20:32:361
3621993028,1cyclictest3645-21apache_processe19:07:361
3621993028,1cyclictest3435-21munin-run23:47:251
3621993027,3cyclictest0-21swapper/100:08:041
3621993027,2cyclictest6105-21ssh23:05:221
3621993027,2cyclictest31200-21ssh22:10:011
3621993027,2cyclictest29154-21cat20:12:401
3621993027,2cyclictest26475-21timerwakeupswit23:32:451
3621993027,2cyclictest20964-21apache_processe19:52:371
3621993027,2cyclictest12574-21ssh21:43:391
3621993027,2cyclictest0-21swapper/122:25:161
3621993026,3cyclictest14575-21/usr/sbin/munin19:32:431
3621993010,4cyclictest91rcu_preempt22:05:361
362099300,1cyclictest0-21swapper/022:41:560
3621992926,2cyclictest31333-21ntp_states20:17:431
3621992926,2cyclictest30601-21ssh00:24:051
3621992926,2cyclictest2650-21seq22:15:491
3621992926,2cyclictest19675-21grep19:47:421
3621992926,2cyclictest17249-21diskmemload23:51:091
3621992926,2cyclictest17249-21diskmemload23:08:211
3621992926,2cyclictest13140-21latency_hist19:32:251
3621992926,2cyclictest0-21swapper/120:42:431
3621992926,2cyclictest0-21swapper/100:32:251
3621992926,2cyclictest0-21swapper/100:02:431
3621992925,3cyclictest15608-21idleruntime19:37:391
3621992924,4cyclictest24-21ksoftirqd/122:58:281
3621992827,1cyclictest0-21swapper/120:48:111
3621992826,2cyclictest0-21swapper/121:07:491
3621992826,1cyclictest16190-21grep21:02:421
3621992825,2cyclictest5985-21cstates20:37:381
3621992825,2cyclictest14848-21fschecks_time22:32:381
3621992825,2cyclictest0-21swapper/121:48:301
3621992824,3cyclictest3386-21rm00:32:331
3621992824,3cyclictest32701-21diskstats20:22:381
3621992819,8cyclictest3173-21date20:27:431
3621992724,2cyclictest0-21swapper/122:21:011
3621992721,5cyclictest17136-21apache_accesses19:42:371
3620992725,1cyclictest7-21ksoftirqd/020:12:250
3620992710,12cyclictest0-21swapper/022:53:540
3620992710,11cyclictest0-21swapper/023:26:510
3621992522,2cyclictest0-21swapper/119:57:361
3621992520,3cyclictest7894-21apache219:16:321
3620992520,4cyclictest7894-21apache223:41:380
362099251,1cyclictest0-21swapper/021:59:330
3620992510,5cyclictest0-21swapper/023:47:410
3620992510,11cyclictest0-21swapper/000:01:470
3621992422,2cyclictest0-21swapper/120:02:451
3620992424,0cyclictest0-21swapper/000:14:000
3620992422,1cyclictest21297-21/usr/sbin/munin21:12:450
3620992410,4cyclictest0-21swapper/022:43:330
362099234,10cyclictest0-21swapper/000:27:370
3620992318,4cyclictest7894-21apache221:39:340
3620992318,4cyclictest7871-21apache223:06:510
3620992310,6cyclictest0-21swapper/019:42:420
3620992310,5cyclictest0-21swapper/023:11:210
3620992310,3cyclictest0-21swapper/023:17:330
3620992221,1cyclictest0-21swapper/020:05:160
3620992210,5cyclictest0-21swapper/023:45:040
3620992210,4cyclictest0-21swapper/000:02:430
362099213,14cyclictest17249-21diskmemload23:32:400
3620992114,2cyclictest0-21swapper/023:32:180
3620992110,3cyclictest0-21swapper/023:12:390
3620992110,2cyclictest0-21swapper/021:17:350
3620992110,1cyclictest0-21swapper/019:08:380
3620992110,1cyclictest0-21swapper/000:33:580
362099210,12cyclictest0-21swapper/019:12:420
362099204,10cyclictest0-21swapper/020:12:410
362099201,3cyclictest0-21swapper/021:27:500
3620992010,6cyclictest0-21swapper/022:51:310
3620992010,4cyclictest0-21swapper/022:58:170
3620992010,4cyclictest0-21swapper/000:18:490
3620992010,2cyclictest0-21swapper/021:27:090
3620992010,1cyclictest0-21swapper/000:24:190
58652190,0sleep00-21swapper/021:34:390
3620991916,2cyclictest3618-21cyclictest20:17:450
3620991911,5cyclictest100150irq/106-eth1-rx22:20:470
3620991910,5cyclictest0-21swapper/020:22:360
3620991910,3cyclictest0-21swapper/021:47:110
3620991910,3cyclictest0-21swapper/019:47:420
3620991910,3cyclictest0-21swapper/019:37:400
3620991910,2cyclictest0-21swapper/020:37:380
362099190,3cyclictest0-21swapper/022:03:150
1294721910,0sleep00-21swapper/019:30:370
362099181,9cyclictest0-21swapper/020:42:380
3620991818,0cyclictest0-21swapper/022:13:210
3620991816,1cyclictest0-21swapper/020:57:380
3620991815,1cyclictest3618-21cyclictest22:07:440
3620991812,2cyclictest3618-21cyclictest21:04:070
3620991812,1cyclictest0-21swapper/020:47:370
3620991810,3cyclictest0-21swapper/019:57:370
3620991810,3cyclictest0-21swapper/019:32:390
3620991810,1cyclictest0-21swapper/022:32:400
3620991810,1cyclictest0-21swapper/020:34:370
1970421810,0sleep00-21swapper/021:09:340
3620991711,3cyclictest802-21apache220:55:470
3620991710,5cyclictest0-21swapper/022:31:310
3620991710,5cyclictest0-21swapper/021:56:570
3620991710,0cyclictest0-21swapper/023:53:390
362099170,10cyclictest0-21swapper/019:52:380
362099162,1cyclictest17249-21diskmemload21:51:140
3620991611,1cyclictest0-21swapper/019:20:480
3620991610,2cyclictest0-21swapper/019:22:470
3620991410,1cyclictest0-21swapper/020:31:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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