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2025-12-04 - 19:38
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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 rackeslot8.osadl.org (updated Thu Dec 04, 2025 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2271650993835,1cyclictest0-21swapper/312:30:003
2271650993125,3cyclictest2292563-21turbostat07:25:003
2271650992320,1cyclictest0-21swapper/311:45:003
2271650992219,1cyclictest0-21swapper/311:50:153
227165099219,9cyclictest2286297-21sleep07:20:003
2271650992118,1cyclictest0-21swapper/310:20:203
2271650992017,1cyclictest0-21swapper/309:45:193
2271650991916,1cyclictest0-21swapper/311:20:003
2271650991916,1cyclictest0-21swapper/308:35:013
2271650991915,1cyclictest0-21swapper/309:35:003
227165099191,14cyclictest2575224-21taskset10:40:173
24879662180,7sleep134-21ksoftirqd/109:46:291
2271650991815,1cyclictest0-21swapper/312:15:183
2271650991815,1cyclictest0-21swapper/310:00:003
2271650991814,1cyclictest0-21swapper/309:41:243
227165099181,13cyclictest2756067-21taskset12:34:103
227165099181,13cyclictest2432748-21taskset09:14:493
227165099177,7cyclictest25684422sleep310:35:383
2271650991714,1cyclictest0-21swapper/310:29:383
2271650991714,1cyclictest0-21swapper/308:55:193
2271650991713,1cyclictest0-21swapper/311:00:263
2271650991713,1cyclictest0-21swapper/307:50:133
227165099171,13cyclictest2586394-21chrt10:49:513
227165099171,13cyclictest2471404-21taskset09:35:293
227165099171,12cyclictest2738545-21taskset12:21:083
227165099171,12cyclictest2719242-21taskset12:10:183
227165099171,12cyclictest2292844-21taskset07:25:123
227165099167,6cyclictest24963682sleep309:52:133
227165099166,7cyclictest25606742sleep310:31:173
227165099166,7cyclictest25606742sleep310:31:163
2271650991613,1cyclictest0-21swapper/311:07:553
2271650991613,1cyclictest0-21swapper/310:10:223
2271650991613,1cyclictest0-21swapper/308:28:553
227165099161,12cyclictest2761189-21taskset12:35:193
227165099161,12cyclictest2708439-21taskset12:05:143
227165099161,12cyclictest2706207-21taskset12:00:493
227165099161,12cyclictest2667400-21turbostat11:39:593
227165099161,12cyclictest2650164-21taskset11:27:253
227165099161,12cyclictest2624906-21taskset11:10:393
227165099161,12cyclictest2520895-21taskset10:07:273
227165099161,12cyclictest2512741-21chrt10:02:503
227165099161,12cyclictest2453095-21taskset09:25:193
227165099161,12cyclictest2448122-21taskset09:23:033
227165099161,12cyclictest2438931-21taskset09:15:263
227165099161,12cyclictest2418192-21chrt09:00:353
227165099161,12cyclictest2405640-21chrt08:53:013
227165099161,12cyclictest2393564-21chrt08:45:113
227165099161,12cyclictest2392935-21chrt08:40:433
227165099161,12cyclictest2367974-21taskset08:22:313
227165099161,12cyclictest2360928-21taskset08:15:223
227165099161,12cyclictest2341937-21taskset08:00:193
227165099161,12cyclictest2323849-21chrt07:47:333
227165099161,12cyclictest2305291-21taskset07:35:033
227165099161,12cyclictest2277579-21chrt07:11:193
227165099161,11cyclictest2602544-21turbostat11:00:013
227165099161,11cyclictest2591900-21taskset10:50:183
227165099161,11cyclictest2424797-21taskset09:09:563
227165099160,13cyclictest2691830-21chrt11:55:043
227165099160,13cyclictest2641347-21chrt11:21:253
23750872151,2sleep10-21swapper/108:30:161
2271650991512,1cyclictest0-21swapper/307:40:193
227165099151,11cyclictest2681910-21chrt11:46:143
227165099151,11cyclictest2386623-21taskset08:35:383
227165099151,11cyclictest2351962-21taskset08:10:173
227165099151,11cyclictest2343030-21taskset08:05:053
227165099151,11cyclictest2336169-21chrt07:55:313
227165099150,12cyclictest2651522-21taskset11:30:073
227165099150,12cyclictest2536328-21chrt10:15:533
227165099150,12cyclictest2305021-21taskset07:34:433
27459822141,10sleep22746186-21grep12:25:252
22659742140,1sleep12266280-21irqcore07:05:161
26585402130,10sleep22658548-21ssh11:33:162
27545052121,8sleep22754513-21ssh12:30:382
26024942121,8sleep0720-21snmpd10:59:500
24464262120,9sleep02446491-21ntp_states09:20:200
147598120,8rtkit-daemon2764494-21latency_hist12:40:001
147598120,8rtkit-daemon2325283-21sed07:50:150
147598120,7rtkit-daemon1540-21sendmail-mta08:16:120
26762962113,5sleep22677225-21kernelversion11:45:182
26429242110,7sleep12643049-21apt-key11:25:011
25622772111,6sleep22562323-21unin-run10:35:012
25622772111,6sleep22562323-21unin-run10:35:002
24557822114,4sleep12399519-21kworker/u16:3+nfsiod09:26:391
23418772111,7sleep22341936-21ntp_states08:00:192
147598110,7rtkit-daemon2665857-21ssh11:36:230
147598110,7rtkit-daemon1540-21sendmail-mta08:23:330
147598110,6rtkit-daemon2398695-21ntp_states08:45:210
147598110,3rtkit-daemon2730573-21ssh12:16:192
27055812100,7sleep02705665-21/usr/sbin/munin12:00:230
25787422101,5sleep02578779-21apt-get10:45:110
25362262100,1sleep22536231-21sh10:15:412
24331352102,4sleep12433172-21apt-get09:15:131
24323842100,2sleep10-21swapper/109:14:001
23923762101,2sleep20-21swapper/208:40:232
22729312100,7sleep02274062-21grep07:10:160
147598100,6rtkit-daemon456-21avahi-daemon08:55:150
147598100,6rtkit-daemon1540-21sendmail-mta09:16:330
2674214290,1sleep00-21swapper/011:42:060
2650405290,1sleep20-21swapper/211:27:582
2633102290,6sleep12633110-21ssh11:16:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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