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2026-07-02 - 23:07
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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
Characteristics of the 20 highest latencies:
System rack6slot5.osadl.org (updated Thu Jul 02, 2026 12:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3051899106865612,5072cyclictest24609-21kworker/0:107:12:410
305189982314135,4054cyclictest24609-21kworker/0:107:29:390
305189981864430,3741cyclictest24609-21kworker/0:108:07:320
305189980534353,3686cyclictest24609-21kworker/0:107:23:230
305189975053804,3691cyclictest24609-21kworker/0:107:49:580
305189974423732,3659cyclictest24609-21kworker/0:108:03:510
305189962843403,2870cyclictest24609-21kworker/0:107:15:510
305189962653398,2863cyclictest24609-21kworker/0:107:31:140
305189951625115,34cyclictest24609-21kworker/0:107:38:010
299962778184,204sleep00-21swapper07:06:180
305189950216,426cyclictest0-21swapper09:01:500
305189946527,424cyclictest15444-21ssh10:27:020
305189946229,247cyclictest12273-21df_abs11:30:370
305189946068,210cyclictest4345-21sendmail-mta09:11:210
305189945825,363cyclictest23564-21ssh09:35:380
305189945585,187cyclictest20464-21ssh11:48:150
305189945318,422cyclictest29769-21ssh10:58:590
305189944667,365cyclictest0-21swapper11:44:440
305189944660,201cyclictest21563-21ssh11:50:390
305189943961,365cyclictest0-21swapper11:04:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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