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2026-05-04 - 03:33
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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 Mon May 04, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
85932820,0sleep10-21swapper/122:31:531
2631127247,20sleep00-21swapper/019:07:110
213122710,0sleep10-21swapper/123:29:221
2634326956,8sleep10-21swapper/119:07:311
26670993737,0cyclictest0-21swapper/100:22:261
26670993120,11cyclictest0-21swapper/123:58:011
26669993010,19cyclictest0-21swapper/021:45:040
26669992919,9cyclictest6636-21apache221:56:490
26669992917,4cyclictest0-21swapper/022:25:520
26670992713,14cyclictest0-21swapper/100:10:531
2666999278,18cyclictest0-21swapper/022:38:540
2666999270,2cyclictest30198-21kworker/u4:023:29:110
26670992622,3cyclictest6607-21apache222:21:451
2666999261,2cyclictest20697-21ssh22:47:570
2667099256,15cyclictest0-21swapper/119:34:141
2667099255,9cyclictest0-21swapper/122:04:591
26669992513,7cyclictest0-21swapper/023:28:420
26669992511,9cyclictest0-21swapper/020:44:110
26669992510,10cyclictest0-21swapper/000:04:140
2667099242,21cyclictest0-21swapper/122:46:321
26669992422,1cyclictest7-21ksoftirqd/021:49:150
26669992421,2cyclictest26977-21apache_volume20:34:140
26669992415,4cyclictest2356-21cpuspeed_turbos20:54:120
26669992411,7cyclictest3625-21ssh23:49:170
26669992410,11cyclictest0-21swapper/022:57:530
26670992323,0cyclictest0-21swapper/121:22:361
26670992319,4cyclictest0-21swapper/100:24:131
26670992318,4cyclictest6607-21apache222:36:291
26670992316,3cyclictest31583-21ssh21:39:001
26670992310,10cyclictest0-21swapper/123:39:141
26669992318,3cyclictest579-21cron20:52:010
26669992310,6cyclictest0-21swapper/022:14:380
26669992310,4cyclictest0-21swapper/023:04:330
26669992310,1cyclictest0-21swapper/023:48:420
26669992310,12cyclictest0-21swapper/023:14:590
2666999230,0cyclictest0-21swapper/021:14:240
2667099225,8cyclictest0-21swapper/100:29:121
26670992221,1cyclictest6636-21apache223:51:531
26670992211,5cyclictest0-21swapper/122:59:211
26670992211,4cyclictest0-21swapper/120:09:221
26670992210,2cyclictest0-21swapper/121:46:401
2667099220,19cyclictest24997-21ntp_states21:29:191
2666999229,8cyclictest7917-21diskmemload22:01:020
26669992221,1cyclictest6607-21apache200:36:520
26669992220,1cyclictest7-21ksoftirqd/019:19:120
26669992214,4cyclictest6607-21apache221:26:040
26669992213,5cyclictest0-21swapper/022:30:030
26669992210,9cyclictest0-21swapper/022:40:570
26669992210,7cyclictest0-21swapper/021:42:010
26669992210,5cyclictest0-21swapper/023:01:120
2667099213,17cyclictest26908-21kworker/1:123:19:141
26670992116,4cyclictest6607-21apache200:14:191
26670992114,6cyclictest0-21swapper/122:39:151
26670992113,7cyclictest6607-21apache221:25:401
26670992110,9cyclictest0-21swapper/119:24:201
26670992110,7cyclictest0-21swapper/123:05:191
26670992110,7cyclictest0-21swapper/122:55:321
26670992110,6cyclictest0-21swapper/100:06:091
26670992110,4cyclictest0-21swapper/123:17:351
26670992110,4cyclictest0-21swapper/122:00:111
2666999214,13cyclictest0-21swapper/020:29:130
2666999212,1cyclictest91rcu_preempt20:04:080
26669992115,4cyclictest21471-21/usr/sbin/munin22:49:150
26669992110,7cyclictest0-21swapper/022:04:170
26669992110,5cyclictest0-21swapper/019:24:150
2666999210,2cyclictest0-21swapper/022:21:320
2667099205,12cyclictest0-21swapper/120:44:131
2667099204,13cyclictest0-21swapper/121:39:191
2667099204,12cyclictest0-21swapper/121:14:141
2667099203,9cyclictest22889-21sshd20:23:121
26670992019,1cyclictest0-21swapper/120:54:121
26670992017,1cyclictest6636-21apache222:12:131
26670992010,6cyclictest0-21swapper/122:16:541
26670992010,5cyclictest0-21swapper/119:29:161
26670992010,5cyclictest0-21swapper/119:14:121
26670992010,3cyclictest0-21swapper/121:52:171
2666999209,2cyclictest26667-21cyclictest21:09:440
2666999208,2cyclictest23332-21if_eth322:09:160
2666999205,8cyclictest0-21swapper/020:09:190
26669992019,1cyclictest6607-21apache221:31:010
26669992018,2cyclictest6607-21apache200:19:300
26669992017,2cyclictest6636-21apache223:41:130
26669992014,3cyclictest0-21swapper/023:34:200
26669992012,5cyclictest6636-21apache223:57:570
26669992010,5cyclictest0-21swapper/000:24:170
26669992010,5cyclictest0-21swapper/000:16:480
2667099195,6cyclictest0-21swapper/100:36:121
2667099194,9cyclictest0-21swapper/123:34:141
2667099193,10cyclictest0-21swapper/123:24:111
2667099191,6cyclictest7917-21diskmemload21:54:191
26670991914,4cyclictest0-21swapper/120:59:141
26670991910,5cyclictest0-21swapper/123:44:401
26670991910,3cyclictest0-21swapper/119:59:181
2666999194,8cyclictest0-21swapper/023:19:140
26669991911,4cyclictest81ktimersoftd/023:09:130
26669991911,3cyclictest0-21swapper/019:44:170
2346221910,0sleep10-21swapper/122:50:391
2057421910,0sleep00-21swapper/000:11:390
1107121910,0sleep00-21swapper/019:50:020
2667099185,8cyclictest0-21swapper/120:24:141
2667099182,9cyclictest0-21swapper/119:49:201
26670991816,1cyclictest9968-21sh21:10:141
26670991810,4cyclictest0-21swapper/122:25:451
26670991810,1cyclictest0-21swapper/119:09:171
2666999182,9cyclictest0-21swapper/020:19:130
26669991816,1cyclictest7-21ksoftirqd/019:18:120
2666999181,3cyclictest91rcu_preempt21:04:470
26669991810,7cyclictest10763-21/usr/sbin/munin23:59:150
26669991810,3cyclictest0-21swapper/000:29:120
26669991810,1cyclictest91rcu_preempt21:34:170
2667099175,7cyclictest25271-21diskstats20:29:141
2667099175,3cyclictest11694-21ps23:59:201
2667099175,10cyclictest0-21swapper/120:34:141
2667099171,9cyclictest0-21swapper/119:44:121
26670991715,1cyclictest6842-21ls21:04:201
26670991710,2cyclictest0-21swapper/120:14:131
26670991710,2cyclictest0-21swapper/119:19:181
26670991710,0cyclictest0-21swapper/123:09:311
2667099170,9cyclictest24-21ksoftirqd/120:49:141
2666999174,7cyclictest0-21swapper/019:54:120
26669991712,2cyclictest0-21swapper/021:20:430
2666999170,9cyclictest0-21swapper/020:59:110
2667099165,8cyclictest0-21swapper/119:54:131
26670991610,5cyclictest0-21swapper/120:08:241
2666999169,6cyclictest4741-21pmu-power19:34:210
26669991613,2cyclictest28901-21apache_accesses20:39:110
26669991612,0cyclictest14572-21/usr/sbin/munin19:59:200
26669991610,2cyclictest0-21swapper/019:43:350
26669991610,2cyclictest0-21swapper/019:10:180
2667099153,6cyclictest6378-21interrupts19:39:171
2666999155,3cyclictest91rcu_preempt19:29:210
26669991515,0cyclictest0-21swapper/020:24:070
26669991510,2cyclictest0-21swapper/020:14:120
26670991410,3cyclictest0-21swapper/120:39:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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