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2026-07-25 - 12:33
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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 376 highest latencies:
System rack6slot5.osadl.org (updated Sat Jul 25, 2026 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
166339991914764,4417cyclictest7383-21kworker/0:119:15:500
166339991204835,4282cyclictest7383-21kworker/0:119:12:330
166339958743168,2703cyclictest7383-21kworker/0:119:20:420
162882751185,203sleep00-21swapper19:07:470
166339948747,426cyclictest29452-21diskmemload23:07:150
166339948042,198cyclictest11841-21ssh21:41:220
166339946935,373cyclictest12-21rcu_preempt22:36:040
166339946835,250cyclictest13410-21ssh22:58:320
166339946634,420cyclictest20643-21ssh23:15:180
166339945933,365cyclictest4305-21snmpd23:20:330
166339945732,425cyclictest31194-21sh23:38:260
166339941339,361cyclictest29452-21diskmemload21:37:230
166339941333,367cyclictest4924-21runrttasks23:30:530
166339941232,380cyclictest29452-21diskmemload21:20:280
166339941136,363cyclictest16707-21ssh21:52:530
166339940932,377cyclictest1118-21nfs_client22:30:530
166339940832,362cyclictest26166-21ssh22:15:110
166339940732,351cyclictest7033-21python23:56:090
166339940644,348cyclictest14873-21smartctl23:01:110
166339940634,372cyclictest0-21swapper23:48:120
166339940633,373cyclictest0-21swapper20:38:310
166339940626,366cyclictest8076-21ssh22:46:010
166339940532,359cyclictest18966-21ssh23:10:440
166339940432,252cyclictest26310-21sshd21:00:290
166339940431,373cyclictest13186-21ssh21:45:320
166339940234,368cyclictest29452-21diskmemload22:30:060
166339940214,88cyclictest11639-21fschecks_time00:06:220
166339940032,360cyclictest18736-21ssh00:22:380
166339939926,359cyclictest29452-21diskmemload00:18:050
166339939921,87cyclictest10110-21ssh00:03:560
166339939831,305cyclictest846-21apt-get21:17:120
166339939732,351cyclictest30588-21python21:11:070
166339939732,351cyclictest16146-21chrt20:32:340
166339939732,350cyclictest23133-21ssh22:06:370
166339939731,352cyclictest28412-21awk21:05:330
166339939631,351cyclictest21017-21awk20:45:340
166339939531,349cyclictest4126-21ssh21:25:250
166339939320,360cyclictest12-21rcu_preempt23:29:010
166339938718,356cyclictest29152-21kworker/u2:022:23:390
166339938555,270cyclictest4285-21lldpd21:56:040
166339938532,339cyclictest22964-21ssh00:31:330
166339938445,278cyclictest25314-21expr22:11:340
166339938432,337cyclictest12913-21ssh00:10:260
166339938431,340cyclictest23914-21ssh00:35:240
166339938232,337cyclictest5050-21runrttasks23:51:260
166339938231,338cyclictest351950irq/10-yenta22:52:580
166339938220,303cyclictest10844-21cron20:20:010
166339938132,164cyclictest23747-21chrt20:54:010
166339938131,290cyclictest2861-21chrt19:56:230
166339938052,268cyclictest7805-21df_abs20:10:290
166339938051,269cyclictest19324-21wc20:40:440
166339938032,335cyclictest12741-21sort20:25:010
166339937932,287cyclictest29452-21diskmemload23:40:400
166339937851,268cyclictest21535-21ssh22:04:440
166339937242,270cyclictest6161-21fschecks_time22:41:210
166339937131,279cyclictest19033-21kworker/u2:000:25:090
166339936944,88cyclictest23791-21seq19:25:490
166339936940,90cyclictest26412-21runrttasks19:34:480
166339936840,90cyclictest282682chrt19:39:480
166339936545,88cyclictest13290-21gzip20:25:250
166339936434,270cyclictest4924-21runrttasks20:00:270
166339936229,272cyclictest5721-21ntp_offset20:05:220
166339935933,265cyclictest6515-21rm21:30:320
166339935528,268cyclictest441-21needreboot19:50:370
166339934631,256cyclictest29452-21hddtemp_smartct19:40:500
166339933574,89cyclictest86650irq/10-i91520:55:450
166339932554,258cyclictest31153-21ls19:45:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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