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2026-07-01 - 05:54
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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 Wed Jul 01, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
313089951452865,2278cyclictest1302-21kworker/0:119:12:030
308202782186,177sleep00-21swapper19:06:360
313089949736,461cyclictest0-21swapper22:23:390
313089948835,439cyclictest11758-21diskmemload23:27:530
313089948833,441cyclictest31232-21ssh22:57:540
313089948632,449cyclictest2896-21ssh21:59:110
313089948532,439cyclictest16083-21strings22:25:550
313089948432,441cyclictest20387-21ssh21:26:250
313089948431,439cyclictest18381-21ssh23:39:570
313089948335,435cyclictest83642chrt19:31:440
313089948331,439cyclictest30733-21ssh00:06:320
313089948331,438cyclictest11758-21diskmemload22:45:490
313089948132,436cyclictest11988-21ssh00:35:500
313089947732,432cyclictest17621-21munin-node22:31:270
313089947238,434cyclictest0-21swapper23:02:530
313089947233,439cyclictest0-21swapper00:11:300
313089947134,90cyclictest4924-21runrttasks21:20:210
313089946732,421cyclictest1053-21awk20:40:270
313089946433,372cyclictest1322-21munin-node19:15:350
313089946432,372cyclictest10487-21munin-node22:15:400
313089946233,369cyclictest31045-21df21:50:230
313089945732,412cyclictest5718-21unixbench_singl19:25:280
313089945716,88cyclictest24719-21ssh21:36:000
313089945433,90cyclictest12-21rcu_preempt23:47:330
313089945332,407cyclictest28470-21ls21:45:040
313089942945,88cyclictest4850-21chrt22:01:500
313089941636,197cyclictest16358-21ssh21:19:250
313089941524,376cyclictest29937-21forks20:30:310
313089941435,365cyclictest78542sleep020:58:340
313089941160,337cyclictest24520-21proc_pri23:51:190
313089941126,88cyclictest22477-21sed22:40:170
313089940935,359cyclictest9170-21ssh23:20:220
313089940820,88cyclictest27173-21mailstats22:50:150
313089940816,88cyclictest21607-21chrt20:08:460
313089940734,360cyclictest11147-21kworker/u2:223:41:550
313089940734,359cyclictest11864-21kworker/u2:121:13:100
313089940730,363cyclictest10098-21ssh22:13:550
313089940637,356cyclictest11758-21diskmemload00:28:430
313089940534,358cyclictest20728-21kworker/u2:321:49:090
313089940432,360cyclictest344450irq/10-eth020:25:260
313089940417,373cyclictest5411-21seq00:21:250
313089939933,352cyclictest11758-21diskmemload00:00:470
313089939832,351cyclictest10305-21ssh00:31:390
313089939737,347cyclictest351950irq/10-yenta23:06:120
313089939733,350cyclictest22752sleep000:15:420
313089939732,351cyclictest12686-21ntpq19:45:160
313089939732,350cyclictest7534-21ssh22:08:060
313089939731,351cyclictest26242-21sort20:20:320
313089939432,349cyclictest5611-21cstates20:50:570
313089939223,355cyclictest11758-21diskmemload23:15:260
313089939125,353cyclictest2503-21mailstats20:45:150
313089939118,359cyclictest5334-21ssh23:11:060
313089939032,289cyclictest3435-21grep19:20:220
313089939022,87cyclictest17627-21kworker/u2:023:57:190
313089938961,268cyclictest19996-21munin-node22:35:230
313089938935,340cyclictest11758-21diskmemload21:30:160
313089938934,341cyclictest25118-21apt-get20:17:120
313089938832,342cyclictest14475-21munin-node23:30:420
313089938217,88cyclictest10029-21sendmail_mailtr21:05:140
313089937831,286cyclictest15216-21needreboot19:50:370
313089935517,277cyclictest10705-21latency_hist19:40:040
313089934931,259cyclictest9360-21timerwakeupswit21:00:580
313089934514,271cyclictest18618-21rt-features20:00:270
313089934315,90cyclictest11929-21sed19:40:570
313089933157,260cyclictest31754-21grep20:35:300
313089932861,254cyclictest22436-21unixbench_singl20:10:300
313089932360,249cyclictest16958-21nfs_client19:55:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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