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2026-05-09 - 09:02
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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 Sat May 09, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38202730,1sleep10-21swapper/120:09:141
1189327158,8sleep10-21swapper/119:04:221
206342670,0sleep00-21swapper/023:08:390
1205226553,8sleep00-21swapper/019:06:000
124412520,2sleep11251999cyclictest22:14:151
1251999368,7cyclictest24-21ksoftirqd/121:43:371
1251999367,2cyclictest91rcu_preempt00:18:481
1251999367,0cyclictest91rcu_preempt22:02:511
12519993535,0cyclictest24-21ksoftirqd/121:28:541
12519993534,0cyclictest24-21ksoftirqd/123:52:021
12519993517,4cyclictest91rcu_preempt00:01:351
12519993512,5cyclictest91rcu_preempt23:32:571
1251999349,4cyclictest91rcu_preempt21:46:121
12519993414,5cyclictest91rcu_preempt22:48:291
12518993410,3cyclictest0-21swapper/022:42:090
12519993332,1cyclictest24-21ksoftirqd/121:18:111
12519993311,12cyclictest91rcu_preempt23:17:291
12519993231,1cyclictest24-21ksoftirqd/100:19:191
1251999317,4cyclictest91rcu_preempt20:34:151
12519993114,2cyclictest91rcu_preempt22:42:271
12519993112,10cyclictest91rcu_preempt19:24:301
12519993110,16cyclictest0-21swapper/123:12:351
12519993027,2cyclictest24-21ksoftirqd/121:11:281
12518993028,1cyclictest0-21swapper/000:22:520
1251999296,2cyclictest91rcu_preempt22:56:401
12519992928,1cyclictest24-21ksoftirqd/123:45:431
12519992914,3cyclictest91rcu_preempt21:37:131
12519992910,11cyclictest0-21swapper/119:09:111
12518992910,18cyclictest0-21swapper/021:03:400
1251999286,2cyclictest91rcu_preempt22:24:201
1251999285,1cyclictest91rcu_preempt00:04:551
12519992824,3cyclictest0-21swapper/100:36:531
12519992725,1cyclictest30405-21irqstats19:54:141
12519992724,2cyclictest26106-21diskmemload22:05:271
12519992724,2cyclictest24280-21df_inode19:39:111
12519992724,2cyclictest0-21swapper/123:25:211
12519992722,4cyclictest31821-21ssh21:57:501
12519992720,5cyclictest24-21ksoftirqd/121:19:381
12519992716,8cyclictest231ktimersoftd/119:44:141
12519992712,6cyclictest24-21ksoftirqd/100:11:371
12518992722,4cyclictest27969-21apache221:29:130
1251899270,3cyclictest0-21swapper/023:19:140
12519992624,2cyclictest0-21swapper/122:49:391
12519992624,2cyclictest0-21swapper/120:54:101
12519992623,2cyclictest31261-21ssh23:22:031
12519992623,2cyclictest22772-21memory19:34:141
12519992623,2cyclictest18812-21diskstats20:49:101
12519992623,2cyclictest16613-21latency_hist20:43:591
12519992623,2cyclictest1583-21fschecks_count20:04:121
12519992623,2cyclictest12910-21ntp_states00:24:151
12519992623,2cyclictest0-21swapper/123:35:261
12519992623,2cyclictest0-21swapper/122:22:271
12519992622,3cyclictest9703-21apache_processe21:29:101
12519992622,3cyclictest26764-21ssh22:33:581
12519992622,3cyclictest16810-21cstates20:44:101
12519992615,6cyclictest231ktimersoftd/119:29:141
12518992618,4cyclictest27969-21apache200:33:300
12519992522,2cyclictest7848-21grep20:19:171
12519992522,2cyclictest26106-21diskmemload22:36:411
12519992522,2cyclictest26106-21diskmemload00:29:151
12519992522,2cyclictest0-21swapper/120:29:261
12519992519,5cyclictest0-21swapper/120:59:191
12519992517,7cyclictest652-21nscd23:54:161
12518992521,2cyclictest12516-21cyclictest00:24:110
12519992422,2cyclictest10120-21ssh22:11:241
12519992422,2cyclictest0-21swapper/122:59:201
12519992422,2cyclictest0-21swapper/120:14:301
12519992422,1cyclictest347-21python19:59:181
12519992420,3cyclictest13242-21ssh23:40:161
12519992420,3cyclictest0-21swapper/119:18:131
12519992417,2cyclictest24-21ksoftirqd/123:05:291
1251899244,11cyclictest0-21swapper/019:44:130
12518992423,1cyclictest0-21swapper/019:54:470
12518992410,8cyclictest0-21swapper/022:59:130
12518992410,12cyclictest0-21swapper/023:26:430
1251899240,12cyclictest4119-21hddtemp_smartct23:29:130
1251899240,12cyclictest0-21swapper/022:19:110
1251999232,10cyclictest0-21swapper/121:04:091
12519992320,2cyclictest28542-21ssh21:53:581
1251899234,18cyclictest0-21swapper/021:15:480
12518992310,1cyclictest0-21swapper/021:23:260
12518992221,1cyclictest27969-21apache223:09:520
12518992214,5cyclictest23870-21kworker/0:223:39:150
12518992210,9cyclictest0-21swapper/023:14:180
12518992210,6cyclictest0-21swapper/021:11:580
576322110,0sleep00-21swapper/022:04:520
12519992119,1cyclictest24-21ksoftirqd/120:24:151
1251899214,12cyclictest0-21swapper/022:29:170
12518992120,1cyclictest26639-1kworker/u5:022:36:570
12518992117,3cyclictest27996-21apache221:58:370
12518992116,4cyclictest27996-21apache222:09:100
12518992112,6cyclictest27969-21apache223:35:410
12518992110,6cyclictest0-21swapper/019:29:100
12518992110,1cyclictest0-21swapper/021:50:320
12518992019,0cyclictest0-21swapper/022:16:410
1251899201,7cyclictest27976-21apache223:59:100
12518992016,3cyclictest27969-21apache223:51:550
12518992015,3cyclictest27996-21apache221:35:310
12518992015,3cyclictest100150irq/106-eth1-rx21:27:030
12518992011,5cyclictest0-21swapper/020:49:130
12518992010,6cyclictest0-21swapper/022:44:570
12518992010,6cyclictest0-21swapper/000:16:280
12518992010,4cyclictest0-21swapper/022:24:440
1251899200,2cyclictest0-21swapper/022:55:440
173621910,1sleep00-21swapper/021:59:370
1251899195,9cyclictest0-21swapper/023:45:100
12518991917,1cyclictest4042-21pluginstate20:09:170
12518991914,3cyclictest81ktimersoftd/021:39:110
12518991910,4cyclictest0-21swapper/020:39:160
12518991910,3cyclictest0-21swapper/000:37:190
12518991910,0cyclictest0-21swapper/022:51:300
1251899190,0cyclictest0-21swapper/020:44:180
12519991812,2cyclictest16403-21apache_volume19:19:101
12519991810,4cyclictest0-21swapper/119:49:111
1251899185,5cyclictest0-21swapper/020:24:120
1251899182,7cyclictest0-21swapper/019:24:130
12518991811,2cyclictest100250irq/107-eth1-rx00:04:030
12518991810,5cyclictest0-21swapper/021:44:160
12518991810,5cyclictest0-21swapper/019:09:120
12518991810,4cyclictest0-21swapper/000:09:350
12518991810,3cyclictest0-21swapper/019:59:230
12518991810,2cyclictest0-21swapper/021:04:130
12518991810,1cyclictest0-21swapper/020:08:590
1251899180,9cyclictest0-21swapper/019:14:100
1251899176,4cyclictest0-21swapper/020:14:100
1251899174,9cyclictest0-21swapper/020:19:110
12518991717,0cyclictest0-21swapper/020:34:150
12518991715,1cyclictest27996-21apache223:58:010
1251899170,11cyclictest0-21swapper/019:39:180
1251899164,5cyclictest0-21swapper/019:19:090
1251899163,4cyclictest0-21swapper/020:29:150
12518991612,4cyclictest0-21swapper/020:54:040
12518991610,2cyclictest0-21swapper/019:49:150
1251899153,4cyclictest0-21swapper/019:34:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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