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2025-12-02 - 15:15
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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 50 highest latencies:
System rackbslot7.osadl.org (updated Tue Dec 02, 2025 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
77929912152,46cyclictest0-21swapper/109:44:061
6788212112,77sleep16815-21/usr/sbin/munin07:04:181
7789991192,28cyclictest7232-21/usr/sbin/munin09:54:070
7789991192,23cyclictest28258-21/usr/sbin/munin08:09:110
7789991192,23cyclictest28258-21/usr/sbin/munin08:09:110
77929911653,43cyclictest0-21swapper/108:43:441
77929911653,43cyclictest0-21swapper/108:43:441
7789991153,32cyclictest7791-21date07:08:460
7789991093,22cyclictest4188-21taskset11:45:160
7789991093,22cyclictest4188-21taskset11:45:160
77899910850,52cyclictest0-21swapper/011:24:030
7789991082,26cyclictest9207-21ssh10:57:050
7789991082,24cyclictest16873-21sh10:11:320
7789991074,7cyclictest0-21swapper/009:03:570
77899910746,53cyclictest0-21swapper/010:59:390
7789991073,27cyclictest18912-21grep10:14:200
7789991073,25cyclictest6237-21runrttasks10:51:180
7789991073,25cyclictest6237-21runrttasks10:51:180
7789991072,25cyclictest9727-21seq08:52:310
7789991072,23cyclictest15971-21ssh12:07:230
7789991072,23cyclictest15971-21ssh12:07:230
77899910652,49cyclictest0-21swapper/010:33:440
7789991064,25cyclictest30548-21sh10:36:590
7789991062,40cyclictest19359-21ssh12:13:550
7789991062,24cyclictest355-21runrttasks11:23:200
7789991062,24cyclictest28303-21ssh11:30:430
7789991054,22cyclictest23462-21ssh12:20:020
7789991053,26cyclictest14714-21taskset10:08:250
7789991052,26cyclictest21561-21seq09:19:170
77899910517,60cyclictest9560-21sh11:54:460
78019910449,9cyclictest0-21swapper/208:53:442
7789991044,25cyclictest355-21runrttasks07:56:540
77899910354,43cyclictest0-21swapper/009:24:100
7789991033,25cyclictest27371-21ssh12:28:210
7789991033,22cyclictest29604-21ssh12:31:230
7789991032,28cyclictest4848-21seq08:37:120
7789991032,28cyclictest4848-21seq08:37:120
7789991032,24cyclictest13116-21ssh12:02:310
7789991032,24cyclictest13116-21ssh12:02:310
886221020,6sleep30-21swapper/309:57:263
77929910257,38cyclictest292-21dbus-daemon09:18:421
7789991022,87cyclictest5447-21grep08:39:050
7789991022,87cyclictest5447-21grep08:39:050
7789991013,25cyclictest30840-21ssh11:35:060
7789991013,25cyclictest30840-21ssh11:35:060
7789991013,25cyclictest18504-21ssh12:11:500
7789991013,23cyclictest30871-21ssh09:38:380
7789991012,23cyclictest22954-21runrttasks10:23:430
7789991003,23cyclictest11274-21taskset07:17:410
7789991002,25cyclictest13294-21seq09:03:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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