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2025-05-02 - 01:53
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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 50 highest latencies:
System rackcslot2.osadl.org (updated Thu May 01, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30242710,0sleep10-21swapper/109:08:371
1996326854,9sleep00-21swapper/007:03:450
2026626754,9sleep10-21swapper/107:06:551
20579993810,26cyclictest0-21swapper/011:57:060
2058099310,1cyclictest25663-21cron09:43:141
20579992810,18cyclictest0-21swapper/012:23:180
20579992810,0cyclictest0-21swapper/008:23:580
2057999271,24cyclictest0-21swapper/011:14:120
20580992624,1cyclictest24-21ksoftirqd/109:38:191
20579992624,1cyclictest22542-21ssh09:33:350
20579992624,1cyclictest13687-21fschecks_count08:13:340
20579992624,1cyclictest13687-21fschecks_count08:13:340
2057999260,25cyclictest7127-21ssh11:19:520
2057999260,24cyclictest0-21swapper/012:00:350
20580992521,3cyclictest0-21swapper/110:45:081
2057999254,20cyclictest0-21swapper/012:10:240
20579992518,5cyclictest30407-21apache210:28:020
20579992510,8cyclictest0-21swapper/010:32:510
2057999250,21cyclictest26760-21ssh10:21:110
20580992419,4cyclictest19938-21ntpdc08:28:371
20580992417,4cyclictest29943-21/usr/sbin/munin11:08:321
20580992415,5cyclictest0-21swapper/109:14:171
20580992414,3cyclictest0-21swapper/112:27:111
2058099240,1cyclictest0-21swapper/111:54:321
20579992412,5cyclictest0-21swapper/008:06:340
20579992410,5cyclictest0-21swapper/007:45:070
20579992410,1cyclictest0-21swapper/012:35:390
20579992410,14cyclictest0-21swapper/007:12:580
20580992323,0cyclictest0-21swapper/107:12:281
20580992319,3cyclictest817-21apache208:18:441
20580992319,3cyclictest30407-21apache211:41:391
20580992318,4cyclictest30407-21apache212:32:331
20580992317,6cyclictest30407-21apache209:03:371
20580992313,4cyclictest24798-1kworker/u5:212:35:541
20580992310,5cyclictest0-21swapper/109:47:531
20580992310,12cyclictest30338-21kworker/1:111:16:261
20579992319,3cyclictest30391-21apache210:00:240
20579992310,4cyclictest0-21swapper/010:03:590
20579992310,2cyclictest0-21swapper/008:39:150
2057999230,17cyclictest0-21swapper/010:33:260
2058099224,17cyclictest0-21swapper/110:50:471
20580992212,10cyclictest0-21swapper/108:26:391
20580992210,6cyclictest0-21swapper/107:18:311
20580992210,3cyclictest0-21swapper/111:48:371
20580992210,12cyclictest0-21swapper/110:31:221
2057999222,10cyclictest0-21swapper/007:58:310
20579992217,3cyclictest30407-21apache212:13:300
2057999221,1cyclictest0-21swapper/010:47:440
20579992210,2cyclictest0-21swapper/010:14:390
20579992210,0cyclictest0-21swapper/011:08:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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