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2026-05-25 - 08:07
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack0slot2.osadl.org (updated Mon May 25, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
397152227548,8sleep40-21swapper/419:04:564
3971979995755,2cyclictest36210-21kworker/u16:1+flush-8:021:57:356
396256025544,7sleep50-21swapper/519:02:325
3971979995351,2cyclictest36210-21kworker/u16:1+events_unbound22:02:476
3971979995250,2cyclictest336128-21kworker/u16:1+events_unbound23:32:536
3971979995149,2cyclictest4176831-21kworker/u16:3+events_unbound20:57:466
3971979995047,2cyclictest3971742-21kworker/u16:3+flush-8:019:42:466
3971979994947,2cyclictest167364-21kworker/u16:2+events_unbound22:27:426
3971979994947,2cyclictest167364-21kworker/u16:2+events_unbound22:27:426
3971983994742,4cyclictest265424-21latency_hist22:52:207
3971979994745,2cyclictest205199-21kworker/u16:4+flush-8:023:07:456
3971979994543,2cyclictest4033380-21kworker/u16:2+flush-8:021:12:496
3971979994543,2cyclictest167364-21kworker/u16:2+flush-8:022:17:416
3971976994542,2cyclictest3952563-21kworker/u16:0+events_unbound19:12:225
3971979994441,2cyclictest4063262-21kworker/u16:0+events_unbound21:22:516
3971979994436,8cyclictest190730-21kworker/u16:1+events_unbound22:25:146
3971979994436,8cyclictest190730-21kworker/u16:1+events_unbound22:25:146
3971979994341,2cyclictest226921-21kworker/u16:0+events_unbound22:42:476
3971979994341,2cyclictest205199-21kworker/u16:4+flush-8:022:32:486
3971979994240,2cyclictest301851-21kworker/u16:3+events_unbound23:17:486
3971979994139,2cyclictest265642-21kworker/u16:2+flush-8:022:52:486
3971976994136,4cyclictest36210-21kworker/u16:1+flush-8:021:32:215
39651672413,31sleep70-21swapper/719:02:427
3971979994038,2cyclictest336128-21kworker/u16:1+events_unbound23:31:216
3971979993937,2cyclictest421931-21kworker/u16:4+events_unbound00:23:496
3971979993836,2cyclictest36210-21kworker/u16:1+events_unbound21:44:076
3971979993836,2cyclictest36210-21kworker/u16:1+events_unbound21:44:076
3971979993835,2cyclictest3270085-21kworker/u16:6+flush-8:020:32:366
3971976993835,2cyclictest337980-21kworker/u16:2+flush-8:000:02:415
3971979993735,2cyclictest4033380-21kworker/u16:2+flush-8:021:12:136
3971979993735,2cyclictest205199-21kworker/u16:4+events_unbound23:14:546
3971979993634,2cyclictest421931-21kworker/u16:4+events_unbound00:05:506
3971979993634,2cyclictest337980-21kworker/u16:2+events_unbound23:49:496
3971979993533,2cyclictest60465-21kworker/u16:2+events_unbound21:52:496
3971979993533,2cyclictest421931-21kworker/u16:4+events_unbound00:13:576
3971979993533,2cyclictest337980-21kworker/u16:2+flush-8:023:58:376
3971979993533,2cyclictest337980-21kworker/u16:2+events_unbound23:38:416
3971979993533,2cyclictest251977-21kworker/u16:1+events_unbound22:58:156
3971979993432,2cyclictest72681-21kworker/u16:3+events_unbound22:16:386
3971979993432,2cyclictest480872-21kworker/u16:0+events_unbound00:35:016
3971979993432,2cyclictest480872-21kworker/u16:0+events_unbound00:28:256
3971979993432,2cyclictest480872-21kworker/u16:0+events_unbound00:28:256
3971979993432,2cyclictest444505-21kworker/u16:1+events_unbound00:20:016
3971979993432,2cyclictest4063262-21kworker/u16:0+events_unbound21:28:356
3971979993432,2cyclictest336128-21kworker/u16:1+flush-8:023:52:336
3971979993432,2cyclictest336128-21kworker/u16:1+events_unbound23:47:136
3971979993432,2cyclictest336128-21kworker/u16:1+events_unbound23:47:136
3971979993432,2cyclictest3270085-21kworker/u16:6+events_unbound20:22:406
3971979993432,2cyclictest251977-21kworker/u16:1+events_unbound22:48:066
3971983993327,5cyclictest181079-21latency_hist22:17:207
3971979993331,2cyclictest72681-21kworker/u16:3+events_unbound21:33:056
3971979993331,2cyclictest60465-21kworker/u16:2+events_unbound21:51:026
3971979993331,2cyclictest60465-21kworker/u16:2+events_unbound21:39:346
3971979993331,2cyclictest286332-21kworker/u16:0+events_unbound23:06:186
3971979993331,2cyclictest286332-21kworker/u16:0+events_unbound23:06:186
3971979993331,2cyclictest167364-21kworker/u16:2+flush-8:022:10:256
397198399320,30cyclictest124-21kswapd021:57:487
3971979993230,2cyclictest444505-21kworker/u16:1+events_unbound00:10:016
3971979993230,2cyclictest4063262-21kworker/u16:0+flush-8:021:17:436
3971979993129,2cyclictest337980-21kworker/u16:2+events_unbound23:22:416
397145523121,7sleep60-21swapper/619:04:026
41485512300,1chrt4148552-21latency_hist20:37:207
3971979993028,2cyclictest239028-21kworker/u16:2+events_unbound22:39:496
3971976993028,2cyclictest60465-21kworker/u16:2+flush-8:021:47:155
3971976993028,2cyclictest60465-21kworker/u16:2+flush-8:021:47:155
3971979992927,2cyclictest4063262-21kworker/u16:0+events_unbound19:54:236
3971979992926,2cyclictest4033380-21kworker/u16:2+events_unbound19:47:236
3971976992927,2cyclictest409611-21kworker/u16:0+flush-8:023:52:475
3971979992826,2cyclictest4033380-21kworker/u16:2+events_unbound20:27:416
3971979992825,2cyclictest4033380-21kworker/u16:2+flush-8:020:37:216
3971976992826,2cyclictest3971742-21kworker/u16:3+events_unbound19:22:345
3971983992723,3cyclictest124-21kswapd022:56:237
3971979992725,2cyclictest3971742-21kworker/u16:3+events_unbound19:40:376
3971979992725,2cyclictest3971742-21kworker/u16:3+events_unbound19:24:316
3971976992725,2cyclictest337980-21kworker/u16:2+events_unbound23:26:185
3971979992624,2cyclictest4176831-21kworker/u16:3+events_unbound20:54:376
3971976992624,2cyclictest337980-21kworker/u16:2+flush-8:023:57:555
3971976992622,4cyclictest3971742-21kworker/u16:3+flush-8:019:32:205
3971983992520,4cyclictest494316-21latency_hist00:27:197
3971979992523,2cyclictest4148773-21kworker/u16:1+events_unbound20:42:516
3971979992523,2cyclictest3962552-21kworker/u16:1+events_unbound19:08:386
3971976992523,2cyclictest4063262-21kworker/u16:0+flush-8:019:57:435
3971976992522,2cyclictest4063262-21kworker/u16:0+flush-8:021:17:375
3971979992422,2cyclictest3962552-21kworker/u16:1+events_unbound19:33:386
3971976992423,1cyclictest134233-21kworker/u16:0+events_unbound22:13:245
3971979992321,2cyclictest4063262-21kworker/u16:0+events_unbound21:02:386
3971979992321,2cyclictest4063262-21kworker/u16:0+events_unbound21:02:386
3971979992321,2cyclictest4033380-21kworker/u16:2+flush-8:020:09:256
3971979992220,2cyclictest3971742-21kworker/u16:3+events_unbound19:27:496
3971979992220,2cyclictest3971742-21kworker/u16:3+events_unbound19:14:226
3971983992116,4cyclictest635-21systemd-journal21:32:217
3971979992119,2cyclictest3971742-21kworker/u16:3+events_unbound20:01:516
3971976992119,2cyclictest337980-21kworker/u16:2+flush-8:023:27:385
3971976992118,2cyclictest4033380-21kworker/u16:2+flush-8:020:27:515
397198399200,18cyclictest0-21swapper/719:57:427
3971976992018,2cyclictest336128-21kworker/u16:1+flush-8:023:20:085
3971983991915,3cyclictest1234-21snmpd20:13:327
3971979991916,2cyclictest4033380-21kworker/u16:2+events_unbound20:47:296
3971983991814,3cyclictest124-21kswapd023:25:287
3971983991814,3cyclictest1234-21snmpd19:10:347
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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