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2026-04-20 - 06:44
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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 792 highest latencies:
System rackcslot2.osadl.org (updated Mon Apr 20, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2995726755,8sleep10-21swapper/119:06:311
246022660,1sleep10-21swapper/121:25:311
2983626552,8sleep00-21swapper/019:05:130
198302640,0sleep00-21swapper/000:23:310
30390993810,14cyclictest30969-21kworker/u4:023:20:281
30389993110,20cyclictest0-21swapper/022:39:060
3038999291,27cyclictest24032-21kworker/0:123:46:120
3038999291,27cyclictest24032-21kworker/0:121:45:440
3038999290,28cyclictest24032-21kworker/0:123:38:160
3038999290,28cyclictest24032-21kworker/0:119:25:540
30390992826,1cyclictest0-21swapper/100:00:051
3038999281,26cyclictest24032-21kworker/0:123:01:360
3039099273,22cyclictest0-21swapper/122:19:061
30390992727,0cyclictest0-21swapper/122:50:401
3039099270,2cyclictest0-21swapper/123:34:441
3038999279,17cyclictest24032-21kworker/0:123:05:040
30390992610,0cyclictest0-21swapper/121:19:051
3038999269,16cyclictest24032-21kworker/0:121:56:020
3038999267,18cyclictest24032-21kworker/0:123:58:420
3038999262,24cyclictest24032-21kworker/0:122:52:180
3038999262,23cyclictest24032-21kworker/0:120:07:000
3038999262,23cyclictest24032-21kworker/0:100:13:340
30389992618,5cyclictest3047-21apache221:14:390
3038999260,26cyclictest24032-21kworker/0:122:33:080
30390992520,4cyclictest3047-21apache223:41:151
30390992519,6cyclictest0-21swapper/119:28:321
30389992512,6cyclictest100250irq/107-eth1-rx21:40:380
3038999251,22cyclictest24032-21kworker/0:123:19:560
3038999251,21cyclictest24032-21kworker/0:120:54:560
30389992512,12cyclictest24032-21kworker/0:120:59:400
3038999250,24cyclictest24032-21kworker/0:119:52:220
3039099247,17cyclictest0-21swapper/119:39:161
30390992411,7cyclictest3074-21apache223:16:501
3039099240,21cyclictest0-21swapper/119:14:251
3038999248,15cyclictest24032-21kworker/0:119:46:220
30389992423,1cyclictest81ktimersoftd/020:29:200
30389992423,1cyclictest81ktimersoftd/020:29:200
30389992423,1cyclictest0-21swapper/000:18:550
3038999242,21cyclictest24032-21kworker/0:120:01:000
3039099238,15cyclictest0-21swapper/121:43:061
3039099231,14cyclictest19933-21/usr/sbin/munin21:19:241
30390992310,7cyclictest0-21swapper/123:04:231
30390992310,1cyclictest0-21swapper/121:49:251
30390992310,1cyclictest0-21swapper/100:17:271
3039099230,21cyclictest0-21swapper/121:11:301
30389992323,0cyclictest0-21swapper/019:09:240
30389992318,4cyclictest0-21swapper/021:35:380
30389992310,6cyclictest0-21swapper/021:10:480
30389992310,10cyclictest0-21swapper/023:18:400
3038999230,15cyclictest0-21swapper/022:11:300
1835722310,0sleep10-21swapper/122:49:001
3039099228,9cyclictest636-21nscd23:09:511
3039099228,11cyclictest18126-21ssh00:19:381
3039099225,10cyclictest0-21swapper/119:09:191
30390992210,8cyclictest0-21swapper/123:25:061
3038999225,7cyclictest0-21swapper/019:19:190
3038999223,18cyclictest30969-21kworker/u4:023:11:210
30389992222,0cyclictest0-21swapper/023:26:290
30389992222,0cyclictest0-21swapper/021:33:480
30389992217,4cyclictest11641-21diskmemload23:39:540
3038999221,21cyclictest24032-21kworker/0:122:22:340
30389992211,9cyclictest29461-21kworker/u4:222:01:100
3039099214,11cyclictest0-21swapper/120:14:241
30390992115,5cyclictest25153-21ssh22:11:301
3039099211,11cyclictest0-21swapper/120:34:241
30390992110,6cyclictest0-21swapper/100:24:231
30390992110,0cyclictest0-21swapper/122:36:371
3038999218,9cyclictest0-21swapper/023:31:290
3038999213,11cyclictest0-21swapper/020:24:280
3038999212,17cyclictest0-21swapper/021:19:250
3038999211,13cyclictest0-21swapper/019:29:210
30389992110,4cyclictest2837-21taskset22:25:340
3038999210,11cyclictest0-21swapper/000:34:230
920922010,0sleep00-21swapper/019:37:010
3039099206,3cyclictest11641-21diskmemload22:39:491
3039099203,7cyclictest0-21swapper/100:04:271
3039099203,13cyclictest0-21swapper/121:59:261
3039099202,16cyclictest2402-21runrttasks23:56:521
3039099202,0cyclictest0-21swapper/121:44:281
30390992014,1cyclictest0-21swapper/120:24:211
30390992013,4cyclictest0-21swapper/120:44:191
3039099201,12cyclictest0-21swapper/120:49:231
30390992010,8cyclictest0-21swapper/122:19:221
30390992010,7cyclictest100250irq/107-eth1-rx22:26:371
30390992010,6cyclictest0-21swapper/123:50:291
30390992010,5cyclictest0-21swapper/122:29:261
30390992010,3cyclictest0-21swapper/121:34:191
30390992010,3cyclictest0-21swapper/119:19:211
30390992010,1cyclictest0-21swapper/100:32:241
3038999205,8cyclictest0-21swapper/019:14:180
3038999201,1cyclictest24071-21kworker/u4:121:49:120
3038999201,18cyclictest0-21swapper/022:45:220
30389992011,4cyclictest0-21swapper/022:39:170
30389992010,4cyclictest0-21swapper/020:39:190
30389992010,4cyclictest0-21swapper/000:31:450
30389992010,3cyclictest0-21swapper/021:24:100
30389992010,0cyclictest0-21swapper/000:04:410
2080422010,0sleep10-21swapper/120:07:511
3039099194,9cyclictest0-21swapper/121:54:201
30390991914,2cyclictest231ktimersoftd/123:31:561
30390991910,5cyclictest0-21swapper/100:34:221
30390991910,4cyclictest0-21swapper/100:12:091
30390991910,0cyclictest0-21swapper/123:44:551
30389991911,4cyclictest5872-21latency_hist20:54:070
30389991910,8cyclictest0-21swapper/022:56:310
30389991910,1cyclictest0-21swapper/021:04:220
3038999190,7cyclictest24623-21kworker/u4:200:00:050
3038999190,18cyclictest24032-21kworker/0:120:35:340
2635721910,0sleep00-21swapper/022:14:110
3039099184,7cyclictest0-21swapper/119:34:231
3039099183,4cyclictest0-21swapper/122:54:271
30390991817,1cyclictest319-21rpcbind19:56:021
30390991814,3cyclictest3074-21apache219:49:281
30390991810,3cyclictest0-21swapper/120:09:201
30390991810,2cyclictest0-21swapper/121:29:191
3039099180,12cyclictest0-21swapper/120:29:301
3039099180,12cyclictest0-21swapper/120:29:301
3038999186,11cyclictest0-21swapper/020:14:200
3038999185,9cyclictest0-21swapper/020:44:300
3038999183,9cyclictest0-21swapper/023:49:210
30389991810,3cyclictest0-21swapper/022:06:110
30390991710,3cyclictest0-21swapper/123:03:411
30390991710,2cyclictest0-21swapper/120:19:201
30390991710,0cyclictest0-21swapper/122:07:481
3038999174,7cyclictest0-21swapper/000:24:240
3038999172,11cyclictest0-21swapper/019:54:230
30389991713,2cyclictest81ktimersoftd/020:19:220
3038999170,6cyclictest21845-21ntp_kernel_pll_20:09:250
3039099164,6cyclictest0-21swapper/120:58:011
3039099161,8cyclictest0-21swapper/120:40:351
30390991613,1cyclictest0-21swapper/121:04:281
30390991610,2cyclictest0-21swapper/119:29:281
3038999163,7cyclictest0-21swapper/019:39:270
30390991510,3cyclictest0-21swapper/119:59:201
3039099150,6cyclictest8016-21/usr/sbin/munin20:59:211
3039099143,8cyclictest12171-21/usr/sbin/munin19:44:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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