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2026-05-07 - 22:59
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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 100 highest latencies:
System rackcslot2.osadl.org (updated Thu May 07, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
896027146,21sleep00-21swapper/007:04:590
758527049,9sleep10-21swapper/107:04:021
299062640,0sleep00-21swapper/010:40:260
9526993229,2cyclictest10636-21kworker/u4:009:35:591
9526993210,22cyclictest0-21swapper/111:07:561
9526992927,1cyclictest231ktimersoftd/109:49:191
9526992910,3cyclictest0-21swapper/112:27:441
9525992928,1cyclictest0-21swapper/007:39:130
9526992826,1cyclictest32287-21/usr/sbin/munin10:44:131
9525992825,2cyclictest770-21irqbalance11:49:000
9525992810,1cyclictest0-21swapper/009:08:530
9526992717,3cyclictest7962-21ssh11:37:521
952599273,5cyclictest0-21swapper/009:37:480
9525992724,2cyclictest1199-21runrttasks10:52:280
9525992712,4cyclictest100150irq/106-eth1-rx11:15:200
9526992621,5cyclictest19426-21apache212:23:581
9525992625,0cyclictest7984-21kworker/u4:212:01:390
9526992510,0cyclictest0-21swapper/109:04:521
952599251,22cyclictest0-21swapper/010:58:090
9525992510,5cyclictest0-21swapper/011:09:040
9525992510,5cyclictest0-21swapper/011:09:040
9526992422,1cyclictest19426-21apache210:52:461
9526992417,4cyclictest19414-21apache211:50:431
9526992416,5cyclictest19414-21apache209:33:191
9526992410,6cyclictest0-21swapper/110:38:421
9525992416,6cyclictest9700-21ssh09:31:530
952699237,15cyclictest17614-21kworker/1:112:04:251
9526992322,0cyclictest23453-21diskmemload10:39:271
9526992322,0cyclictest0-21swapper/111:32:251
9526992310,8cyclictest0-21swapper/107:49:091
9526992310,6cyclictest0-21swapper/112:31:021
9526992310,12cyclictest0-21swapper/108:56:521
952699230,22cyclictest0-21swapper/111:42:281
9525992321,1cyclictest7-21ksoftirqd/009:09:190
9525992315,5cyclictest636-21nscd10:09:190
9525992310,6cyclictest0-21swapper/010:35:150
9525992310,6cyclictest0-21swapper/008:54:130
9525992310,5cyclictest0-21swapper/009:44:100
9526992210,7cyclictest0-21swapper/110:28:521
952599227,8cyclictest0-21swapper/009:19:170
9525992220,1cyclictest0-21swapper/011:19:190
9525992218,4cyclictest947-21sendmail-mta11:36:010
9525992210,3cyclictest0-21swapper/010:04:030
9525992210,3cyclictest0-21swapper/009:54:170
9525992210,10cyclictest0-21swapper/012:34:160
952699213,14cyclictest0-21swapper/108:04:171
952699213,10cyclictest0-21swapper/107:39:121
9526992116,4cyclictest19414-21apache209:46:131
9526992115,2cyclictest9523-21cyclictest09:59:151
9526992110,8cyclictest0-21swapper/112:34:171
9526992110,7cyclictest19414-21apache210:29:301
9526992110,7cyclictest0-21swapper/107:24:111
9526992110,5cyclictest0-21swapper/111:14:521
9526992110,5cyclictest0-21swapper/108:34:121
9526992110,4cyclictest0-21swapper/112:00:391
9526992110,1cyclictest0-21swapper/110:59:561
9526992110,0cyclictest0-21swapper/112:15:391
9526992110,0cyclictest0-21swapper/111:44:251
9525992110,9cyclictest0-21swapper/012:08:410
9525992110,4cyclictest0-21swapper/007:19:160
9525992110,3cyclictest0-21swapper/010:27:180
9525992110,0cyclictest0-21swapper/009:53:490
9525992110,0cyclictest0-21swapper/008:45:570
952699205,12cyclictest29672-21kworker/1:007:59:151
952699204,5cyclictest20609-21/usr/sbin/munin11:54:141
9526992020,0cyclictest802-21apache207:30:401
9526992011,4cyclictest0-21swapper/109:24:061
9526992010,8cyclictest0-21swapper/110:57:471
9526992010,6cyclictest0-21swapper/111:11:571
9526992010,6cyclictest0-21swapper/111:11:571
9526992010,5cyclictest0-21swapper/110:08:411
9526992010,3cyclictest0-21swapper/107:44:141
952599204,10cyclictest0-21swapper/011:24:140
9525992018,1cyclictest7-21ksoftirqd/008:39:110
9525992015,3cyclictest28818-21munin-node10:17:310
9525992012,6cyclictest19414-21apache212:12:310
9525992012,4cyclictest19692-1kworker/u5:210:32:590
9525992010,6cyclictest0-21swapper/011:04:350
9525992010,5cyclictest0-21swapper/010:44:170
9525992010,5cyclictest0-21swapper/009:24:100
9525992010,1cyclictest0-21swapper/011:29:160
952599200,17cyclictest0-21swapper/008:14:140
682922010,1sleep10-21swapper/110:09:591
952699194,6cyclictest0-21swapper/108:29:181
952699192,5cyclictest0-21swapper/107:19:201
9526991917,1cyclictest0-21swapper/109:22:491
9526991915,3cyclictest0-21swapper/110:21:011
9526991915,2cyclictest19414-21apache209:40:421
9526991910,6cyclictest0-21swapper/109:18:071
9526991910,4cyclictest0-21swapper/110:14:111
9526991910,3cyclictest0-21swapper/107:18:411
9526991910,2cyclictest0-21swapper/111:19:031
9526991910,2cyclictest0-21swapper/108:59:121
9525991916,1cyclictest0-21swapper/009:18:010
952599191,17cyclictest11687-21diskstats07:14:110
9525991911,1cyclictest0-21swapper/009:41:270
9525991910,6cyclictest0-21swapper/007:34:000
9525991910,5cyclictest0-21swapper/012:14:090
9525991910,5cyclictest0-21swapper/011:44:110
1645121910,0sleep00-21swapper/012:31:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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