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2026-03-26 - 14:55
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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 Thu Mar 26, 2026 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1599526957,8sleep00-21swapper/019:07:260
1586726854,9sleep10-21swapper/119:06:051
16360993129,1cyclictest24-21ksoftirqd/122:04:191
16360993030,0cyclictest24-21ksoftirqd/122:49:381
16360993030,0cyclictest24-21ksoftirqd/121:19:191
1636099290,6cyclictest24-21ksoftirqd/122:10:001
16359992910,5cyclictest0-21swapper/019:49:370
16359992910,1cyclictest0-21swapper/019:13:180
16359992910,0cyclictest0-21swapper/000:15:210
16360992826,1cyclictest24-21ksoftirqd/123:29:351
16360992823,4cyclictest12683-21apache221:28:161
16360992816,2cyclictest24-21ksoftirqd/122:59:311
1636099280,0cyclictest91rcu_preempt23:27:481
16359992820,6cyclictest12683-21apache223:22:180
16360992725,1cyclictest24-21ksoftirqd/123:19:331
16360992721,5cyclictest12683-21apache221:43:441
16360992710,5cyclictest0-21swapper/121:49:371
16359992710,6cyclictest0-21swapper/021:15:000
1635999270,0cyclictest0-21swapper/000:34:380
1636099266,11cyclictest91rcu_preempt23:16:171
16360992623,1cyclictest24-21ksoftirqd/100:05:261
16360992619,4cyclictest24-21ksoftirqd/121:29:301
1636099256,2cyclictest91rcu_preempt21:57:401
1636099255,2cyclictest91rcu_preempt20:36:241
16360992511,4cyclictest91rcu_preempt21:11:451
16360992510,7cyclictest0-21swapper/123:05:121
16359992510,8cyclictest0-21swapper/022:38:250
16359992510,10cyclictest1199-21runrttasks21:09:340
1636099247,11cyclictest0-21swapper/120:59:291
1636099247,11cyclictest0-21swapper/120:59:291
1636099242,4cyclictest91rcu_preempt23:58:481
16360992423,1cyclictest24-21ksoftirqd/122:31:431
16360992417,3cyclictest16357-21cyclictest21:36:361
16360992416,2cyclictest24-21ksoftirqd/119:09:401
16360992411,3cyclictest0-21swapper/121:44:381
1635999247,10cyclictest0-21swapper/019:34:370
16359992422,1cyclictest18645-21fw_packets19:14:320
16359992416,6cyclictest12683-21apache221:55:140
16360992322,1cyclictest24-21ksoftirqd/122:06:431
16360992320,2cyclictest24-21ksoftirqd/120:24:321
16360992313,4cyclictest0-21swapper/123:10:261
16360992310,7cyclictest0-21swapper/122:22:461
16360992310,4cyclictest0-21swapper/123:43:501
16360992310,3cyclictest0-21swapper/121:08:121
1636099230,1cyclictest91rcu_preempt22:24:301
1636099230,15cyclictest0-21swapper/119:54:331
16359992310,8cyclictest0-21swapper/023:45:130
16359992310,8cyclictest0-21swapper/023:18:420
16359992310,7cyclictest0-21swapper/020:50:420
820922210,0sleep10-21swapper/123:37:101
1636099227,9cyclictest14845-21ssh00:34:241
1636099226,8cyclictest0-21swapper/122:45:531
1636099222,7cyclictest231ktimersoftd/122:54:391
16360992221,1cyclictest24-21ksoftirqd/122:39:261
16360992215,5cyclictest0-21swapper/120:49:311
16360992210,6cyclictest0-21swapper/121:24:161
1636099220,13cyclictest0-21swapper/119:59:381
16359992216,3cyclictest16784-21diskmemload23:49:290
1635999221,20cyclictest0-21swapper/020:29:320
16359992210,7cyclictest0-21swapper/021:35:500
16359992210,7cyclictest0-21swapper/000:01:570
16359992210,4cyclictest0-21swapper/022:04:380
16359992210,2cyclictest0-21swapper/021:25:370
1636099216,11cyclictest0-21swapper/119:29:361
1636099214,9cyclictest0-21swapper/123:44:371
1636099214,9cyclictest0-21swapper/120:09:391
1636099212,7cyclictest26506-21ssh00:02:241
16360992118,2cyclictest21271-21ntp_states20:44:341
16360992118,2cyclictest0-21swapper/119:20:421
16360992118,1cyclictest24-21ksoftirqd/123:53:541
16360992117,3cyclictest26093-21cstates19:34:311
16360992111,4cyclictest24-21ksoftirqd/122:19:021
1635999219,7cyclictest636-21nscd23:08:560
1635999219,7cyclictest12655-21apache200:19:220
1635999215,6cyclictest27763-21cat21:49:320
16359992117,3cyclictest12683-21apache222:32:100
16359992111,6cyclictest12683-21apache222:24:470
16359992110,7cyclictest0-21swapper/023:29:310
16359992110,4cyclictest0-21swapper/023:34:360
16359992110,4cyclictest0-21swapper/020:39:310
16359992110,3cyclictest0-21swapper/021:29:340
16359992110,3cyclictest0-21swapper/020:09:350
315732200,1sleep00-21swapper/023:24:340
1636099205,9cyclictest0-21swapper/100:29:311
1636099203,9cyclictest0-21swapper/100:24:351
1636099203,12cyclictest0-21swapper/120:29:331
16360992016,3cyclictest19497-21sed19:14:391
16360992010,4cyclictest0-21swapper/119:29:181
16360992010,1cyclictest0-21swapper/100:16:461
1635999203,8cyclictest0-21swapper/023:54:350
16359992013,5cyclictest28414-21ntp_states00:04:360
16359992013,3cyclictest0-21swapper/020:19:310
16359992012,3cyclictest29929-21diskmemload23:12:300
16359992010,6cyclictest0-21swapper/021:22:390
16359992010,6cyclictest0-21swapper/020:44:290
1635999200,10cyclictest0-21swapper/021:59:390
1432722010,1sleep00-21swapper/000:33:380
1636099195,4cyclictest0-21swapper/100:23:291
1636099194,10cyclictest0-21swapper/119:39:301
16360991912,6cyclictest231ktimersoftd/120:39:281
16360991912,3cyclictest0-21swapper/120:54:311
1635999196,5cyclictest12676-21apache220:59:290
1635999196,5cyclictest12676-21apache220:59:290
16359991910,4cyclictest0-21swapper/022:44:260
16359991910,3cyclictest0-21swapper/023:42:450
16359991910,3cyclictest0-21swapper/021:39:310
16359991910,2cyclictest0-21swapper/021:07:110
1108121910,0sleep00-21swapper/022:55:180
1636099189,3cyclictest24-21ksoftirqd/119:46:441
1636099188,5cyclictest0-21swapper/100:09:381
1636099183,7cyclictest0-21swapper/122:34:441
16360991810,4cyclictest0-21swapper/120:14:331
1635999186,7cyclictest29929-21diskmemload22:13:130
1635999185,5cyclictest25798-21cron19:34:180
1635999183,8cyclictest21118-21/usr/sbin/munin19:19:380
1635999183,13cyclictest0-21swapper/022:14:380
16359991816,0cyclictest100250irq/107-eth1-rx22:40:140
16359991815,1cyclictest12655-21apache223:01:180
16359991814,3cyclictest12655-21apache220:16:080
16359991814,2cyclictest26170-21diskmemload21:47:220
16359991812,4cyclictest12655-21apache220:56:260
16359991810,6cyclictest0-21swapper/022:49:290
16359991810,5cyclictest12655-21apache200:12:050
16359991810,4cyclictest0-21swapper/000:24:390
16359991810,3cyclictest0-21swapper/019:59:310
16359991810,3cyclictest0-21swapper/019:43:060
16360991714,2cyclictest0-21swapper/120:04:301
1635999175,6cyclictest1480-21/usr/sbin/munin19:54:320
1635999174,11cyclictest0-21swapper/020:24:370
1635999173,6cyclictest0-21swapper/019:24:290
16359991710,5cyclictest0-21swapper/020:34:290
16359991710,4cyclictest0-21swapper/019:44:300
16360991610,3cyclictest0-21swapper/119:49:291
16359991611,3cyclictest12683-21apache220:04:380
16359991610,6cyclictest0-21swapper/022:20:100
1229921610,0sleep10-21swapper/120:21:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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