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2026-08-02 - 14:03
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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 Sun Aug 02, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34963521030,1sleep7349634-21unixbench_multi11:24:177
395413025846,8sleep40-21swapper/407:03:474
396343825419,30sleep70-21swapper/707:08:407
3963733995149,2cyclictest4074974-21kworker/u16:3+events_unbound08:36:146
396314225141,7sleep50-21swapper/507:04:285
3963727994745,2cyclictest375618-21kworker/u16:0+flush-8:012:24:014
3963727994745,2cyclictest375618-21kworker/u16:0+flush-8:012:24:014
3963733994644,2cyclictest462556-21kworker/u16:3+events_unbound12:14:126
3963733994341,2cyclictest462556-21kworker/u16:3+flush-8:012:29:016
3963727994340,2cyclictest252283-21kworker/u16:3+events_unbound11:13:454
3963733994240,2cyclictest229461-21kworker/u16:4+events_unbound11:59:116
3963727994240,2cyclictest229461-21kworker/u16:4+events_unbound11:33:574
3963727994240,2cyclictest129468-21kworker/u16:3+events_unbound10:23:454
3963727994240,2cyclictest129468-21kworker/u16:3+events_unbound10:23:454
3963733994139,2cyclictest375618-21kworker/u16:0+flush-8:011:43:596
4081652400,0sleep7408167-21cut11:49:097
3963727994038,2cyclictest462556-21kworker/u16:3+events_unbound12:19:134
3963727994037,2cyclictest423433-21kworker/u16:2+events_unbound11:58:594
3963727993937,2cyclictest352223-21kworker/u16:1+events_unbound11:49:174
3963727993937,2cyclictest105690-21kworker/u16:1+events_unbound10:16:064
3963733993836,2cyclictest352223-21kworker/u16:1+events_unbound11:31:016
3963733993835,2cyclictest4074974-21kworker/u16:3+events_unbound08:28:466
3963727993836,2cyclictest423433-21kworker/u16:2+events_unbound12:13:294
3963727993836,2cyclictest352223-21kworker/u16:1+events_unbound11:48:134
3963733993735,2cyclictest423433-21kworker/u16:2+events_unbound11:54:496
3963727993735,2cyclictest510006-21kworker/u16:1+events_unbound12:37:024
3963727993735,2cyclictest375618-21kworker/u16:0+events_unbound12:05:014
3963733993634,2cyclictest8760-21kworker/u16:2+events_unbound11:06:416
3963733993634,2cyclictest8760-21kworker/u16:2+events_unbound10:26:416
3963733993634,2cyclictest8760-21kworker/u16:2+events_unbound10:26:416
3963733993634,2cyclictest229461-21kworker/u16:4+events_unbound12:06:296
3963733993634,2cyclictest105690-21kworker/u16:1+events_unbound09:55:216
3963727993634,2cyclictest8760-21kworker/u16:2+events_unbound10:42:584
3963727993634,2cyclictest8760-21kworker/u16:2+events_unbound09:44:464
3963727993634,2cyclictest8760-21kworker/u16:2+events_unbound09:44:464
3963727993634,2cyclictest510006-21kworker/u16:1+events_unbound12:32:424
3963727993634,2cyclictest105690-21kworker/u16:1+events_unbound10:34:124
3963733993533,2cyclictest8760-21kworker/u16:2+events_unbound09:41:306
3963733993533,2cyclictest8760-21kworker/u16:2+events_unbound09:36:316
3963727993533,2cyclictest8760-21kworker/u16:2+events_unbound10:05:154
3963727993533,2cyclictest4191695-21kworker/u16:0+events_unbound09:20:224
3963727993533,2cyclictest229461-21kworker/u16:4+events_unbound11:33:254
3963727993533,2cyclictest105690-21kworker/u16:1+events_unbound10:31:424
3963727993532,3cyclictest8760-21kworker/u16:2+events_unbound09:25:034
3963738993433,0cyclictest0-21swapper/707:33:597
3963733993432,2cyclictest4191695-21kworker/u16:0+events_unbound09:22:156
3963733993432,2cyclictest3997171-21kworker/u16:0+events_unbound07:53:466
3963733993432,2cyclictest229461-21kworker/u16:4+events_unbound11:27:066
3963727993432,2cyclictest8760-21kworker/u16:2+events_unbound11:07:064
3963727993432,2cyclictest8760-21kworker/u16:2+events_unbound09:58:134
3963727993432,2cyclictest462083-21kworker/u16:1+flush-8:012:18:134
3963727993432,2cyclictest4074974-21kworker/u16:3+events_unbound09:38:214
3963727993432,2cyclictest4074974-21kworker/u16:3+events_unbound09:30:264
3963733993331,2cyclictest8760-21kworker/u16:2+events_unbound10:07:016
3963733993331,2cyclictest8760-21kworker/u16:2+events_unbound09:44:426
3963733993331,2cyclictest8760-21kworker/u16:2+events_unbound09:44:426
3963733993331,2cyclictest229461-21kworker/u16:4+events_unbound11:42:096
3963727993331,2cyclictest4191695-21kworker/u16:0+flush-8:009:49:174
3963727993331,2cyclictest339515-21kworker/u16:0+events_unbound11:25:014
3963727993331,2cyclictest252283-21kworker/u16:3+events_unbound11:09:504
3963727993331,2cyclictest229461-21kworker/u16:4+flush-8:010:51:334
3963727993331,2cyclictest229461-21kworker/u16:4+events_unbound11:21:104
3963727993331,2cyclictest129468-21kworker/u16:3+events_unbound10:21:014
3893562330,1chrt389357-21sh11:43:487
3963738993226,5cyclictest648-21systemd-journal11:33:447
3963733993230,2cyclictest8760-21kworker/u16:2+events_unbound10:56:236
3963733993230,2cyclictest4016393-21kworker/u16:1+events_unbound07:43:466
3963733993230,2cyclictest229461-21kworker/u16:4+flush-8:010:40:056
3963729993230,2cyclictest462556-21kworker/u16:3+flush-8:012:14:125
3963733993129,2cyclictest423433-21kworker/u16:2+events_unbound12:13:156
3963733993129,2cyclictest229461-21kworker/u16:4+events_unbound12:20:496
3963733993129,2cyclictest229461-21kworker/u16:4+events_unbound11:51:386
3963733993129,2cyclictest129468-21kworker/u16:3+events_unbound10:20:106
3963727993129,2cyclictest8760-21kworker/u16:2+events_unbound09:10:184
3963727993129,2cyclictest4065406-21kworker/u16:1+flush-8:008:44:544
3963727993129,2cyclictest252283-21kworker/u16:3+events_unbound10:45:584
3963727993129,2cyclictest105690-21kworker/u16:1+flush-8:010:10:134
3963727993129,2cyclictest105690-21kworker/u16:1+events_unbound09:59:374
3963727993128,2cyclictest8760-21kworker/u16:2+events_unbound10:56:104
3963738993024,5cyclictest3987034-21latency_hist07:18:457
3963733993028,2cyclictest4074974-21kworker/u16:3+events_unbound09:33:306
3963733993028,2cyclictest177828-21kworker/u16:0+events_unbound10:36:196
3963733993028,2cyclictest129468-21kworker/u16:3+flush-8:010:13:186
3963729993028,2cyclictest3973380-21kworker/u16:4+flush-8:008:09:105
396332223020,7sleep60-21swapper/607:07:026
3963733992927,2cyclictest4065406-21kworker/u16:1+events_unbound08:06:226
3963733992927,2cyclictest3973380-21kworker/u16:4+flush-8:008:15:226
3963729992927,2cyclictest4191695-21kworker/u16:0+events_unbound09:45:295
3963729992927,2cyclictest4191695-21kworker/u16:0+events_unbound09:45:295
3963729992927,2cyclictest229461-21kworker/u16:4+events_unbound12:19:155
3963727992927,2cyclictest4074974-21kworker/u16:3+flush-8:008:37:544
3963727992927,2cyclictest352223-21kworker/u16:1+flush-8:011:54:214
3963727992927,2cyclictest229461-21kworker/u16:4+flush-8:011:41:014
2029742290,1chrt202972-21sh10:25:187
2029742290,1chrt202972-21sh10:25:187
3963733992826,2cyclictest4065406-21kworker/u16:1+events_unbound09:01:426
3963733992826,2cyclictest229461-21kworker/u16:4+events_unbound11:35:306
3963727992826,2cyclictest4104133-21kworker/u16:2+events_unbound08:41:544
3963727992826,2cyclictest4074974-21kworker/u16:3+events_unbound09:42:274
3963727992826,2cyclictest4074974-21kworker/u16:3+events_unbound08:49:534
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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