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2026-06-18 - 06:27
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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 highest latencies:
System rack6slot5.osadl.org (updated Thu Jun 18, 2026 00:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
216989966603663,2994cyclictest6126-21kworker/0:119:12:000
210962779185,204sleep00-21swapper19:05:380
216989951837,410cyclictest472-21diskmemload23:48:170
216989951132,416cyclictest9422-21python00:01:240
216989951077,419cyclictest11-21ksoftirqd/023:09:520
216989950968,89cyclictest20012-21munin-node21:56:430
216989949937,448cyclictest472-21diskmemload00:23:210
216989949135,396cyclictest472-21diskmemload22:37:150
216989948537,378cyclictest472-21diskmemload00:33:230
216989948436,378cyclictest472-21diskmemload00:12:240
216989948232,387cyclictest10878-21munin-node00:05:380
216989947932,376cyclictest23490-21cstates22:01:450
216989947931,386cyclictest2911-21munin-node22:30:380
216989947632,373cyclictest30083-21ssh23:35:170
216989947237,420cyclictest472-21diskmemload22:53:400
216989947032,423cyclictest11076-21df20:10:200
216989946831,257cyclictest22551-21unixbench-2d23:16:280
216989946732,364cyclictest26873-19udisks-part-id23:26:320
216989946632,364cyclictest472-21diskmemload00:29:530
216989946532,362cyclictest14559-21perl22:56:420
216989946332,369cyclictest9549-21munin-node22:45:450
216989946331,417cyclictest12415-21ssh21:36:150
216989946269,89cyclictest13-21rcuc/000:45:040
216989946137,354cyclictest14486-21cron20:20:000
216989946032,357cyclictest14716-21ntp_states20:20:170
216989945935,363cyclictest7319-21df22:40:420
216989945935,363cyclictest28420-21ssh23:30:460
216989945835,362cyclictest1746-21hddtemp_smartct21:11:330
216989945833,363cyclictest4272-21snmpd21:34:010
216989945732,410cyclictest25833-21wc19:21:010
216989945732,363cyclictest18545-21expr20:30:210
216989945731,364cyclictest24529-21cpuspeed_turbos22:05:280
216989945634,360cyclictest7222-21seq21:25:150
216989945432,360cyclictest16741-21grep23:01:430
216989945259,88cyclictest13-21rcuc/023:11:510
216989945235,355cyclictest76802chrt23:57:010
216989945232,359cyclictest31643-21chrt19:36:220
216989945132,358cyclictest4894-21runrttasks21:05:360
216989945034,400cyclictest20731-21sed20:35:350
216989945032,356cyclictest472-21diskmemload21:19:500
216989945032,355cyclictest17248-21rm21:47:220
216989945031,357cyclictest499-21nfs_client23:40:570
216989945031,347cyclictest31224-21awk22:20:440
216989944933,354cyclictest26655-21munin-node19:25:360
216989944832,355cyclictest29591-21python22:16:210
216989944734,351cyclictest27547-21mailstats20:55:120
216989944732,354cyclictest29375-21munin-node21:01:110
216989944632,352cyclictest16175-21tune2fs00:16:510
216989944432,342cyclictest5443-21ssh21:20:380
216989944384,346cyclictest345450irq/10-yenta23:20:510
216989944232,350cyclictest472-21diskmemload23:52:480
216989944232,350cyclictest472-21diskmemload00:36:340
216989944232,347cyclictest10806-21latency_hist20:10:000
216989943731,345cyclictest18192-21gltestperf21:50:310
216989943535,330cyclictest23036-21hddtemp_smartct20:41:020
216989943531,389cyclictest15141-21ssh21:42:310
216989943073,357cyclictest0-21swapper19:50:090
216989942849,88cyclictest32358-21sed19:40:220
216989941831,372cyclictest26147-21kworker/u2:222:13:470
216989941037,257cyclictest472-21diskmemload22:26:570
216989939552,282cyclictest27139-21seq20:52:440
216989939331,301cyclictest3998-21cron20:27:000
216989938931,344cyclictest5813-21df_inode19:55:300
216989938831,342cyclictest7497-21expr20:00:230
216989937938,318cyclictest24624-21strings20:45:440
216989937835,320cyclictest4272-21snmpd19:17:270
216989937724,293cyclictest3302-21cron19:50:010
216989935631,253cyclictest29938-21runrttasks19:32:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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