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2026-07-03 - 09:53
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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 highest latencies:
System rack6slot5.osadl.org (updated Fri Jul 03, 2026 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
255209965263584,2938cyclictest13499-21kworker/0:219:16:140
255209964023569,2784cyclictest13499-21kworker/0:219:14:390
253842777185,204sleep00-21swapper19:09:320
255209950168,364cyclictest11-21ksoftirqd/022:56:140
255209949834,282cyclictest29482-21ssh23:12:330
255209949652,384cyclictest13-21rcuc/019:56:170
255209948532,439cyclictest5780-21diskmemload21:49:020
255209947040,370cyclictest11-21ksoftirqd/019:36:040
255209946634,371cyclictest18224-21sshd22:47:420
255209945337,393cyclictest24480-21fschecks_time20:30:590
255209945336,357cyclictest12-21rcu_preempt22:53:490
255209945173,365cyclictest4924-21runrttasks21:25:160
255209943721,355cyclictest32341-21awk00:30:460
255209942965,350cyclictest5780-21diskmemload23:21:500
255209942960,355cyclictest13-21rcuc/000:17:450
255209942664,349cyclictest27283-21kworker/u2:223:16:530
255209942337,324cyclictest24125-21ntp_states21:50:200
255209942249,359cyclictest30841-21fschecks_count00:26:450
255209942238,371cyclictest13193-21kworker/u2:023:58:230
255209942118,0cyclictest6732-21turbostat.cron23:35:010
255209942032,375cyclictest20470-21munin-node00:05:160
255209941946,88cyclictest30711-21latency_hist22:05:020
255209941933,88cyclictest23566-21sed23:00:300
255209941755,88cyclictest8705-21munin-node19:50:170
255209941742,315cyclictest19883-21ssh00:03:080
255209941538,317cyclictest10016-21ssh21:18:460
255209941344,88cyclictest4046-21ssh23:28:140
255209941337,315cyclictest6973-21ssh23:35:220
255209941261,338cyclictest351950irq/10-yenta00:36:550
255209941224,205cyclictest15604-21seq22:41:330
255209941135,362cyclictest29962-21df19:20:190
255209941045,352cyclictest27300-21ntp_states00:20:230
255209941034,362cyclictest5780-21diskmemload21:39:260
255209940935,314cyclictest23172-21df_abs00:10:420
255209940747,301cyclictest13-21rcuc/023:41:170
255209940739,368cyclictest0-21swapper20:20:120
255209940525,319cyclictest26599-21seq21:55:310
255209940453,338cyclictest351950irq/10-yenta21:14:330
255209940434,356cyclictest13535-21ssh22:36:590
255209940431,190cyclictest6479-21cut22:21:280
255209940322,320cyclictest232712chrt20:29:500
255209940242,87cyclictest0-21swapper19:31:370
255209940238,303cyclictest8414-21kworker/u2:123:48:150
255209940223,319cyclictest25677-21awk20:35:280
255209940124,316cyclictest8505-21turbostat.cron19:50:010
255209940049,79cyclictest0-21swapper21:00:410
255209939834,350cyclictest10202-21sed22:30:380
255209939652,344cyclictest0-21swapper23:08:280
255209939644,291cyclictest344450irq/10-eth023:50:090
255209939535,89cyclictest12-21rcu_preempt21:41:510
255209939330,352cyclictest34-1kworker/0:1H21:00:010
255209939246,346cyclictest0-21swapper22:19:340
255209938947,282cyclictest5780-21diskmemload22:12:300
255209938932,344cyclictest7061-21kworker/0:122:26:260
255209938736,290cyclictest4924-21runrttasks20:10:160
255209938445,280cyclictest15500-21sshd21:30:420
255209938434,290cyclictest14264-21runrttasks20:05:170
255209938432,291cyclictest17898-21which20:15:120
255209938332,291cyclictest31760-21python20:50:530
255209938233,289cyclictest4285-21lldpd21:23:500
255209938031,289cyclictest4224-21lldpd22:08:230
255209937719,298cyclictest13786-21sshd20:02:440
255209936928,104cyclictest5597-21nfs_client19:40:370
255209936826,0cyclictest5731-21sshd21:09:420
255209936516,290cyclictest32369-21nfs_client19:25:370
255209936014,170cyclictest274762sleep020:40:260
255209935654,288cyclictest29509-21df_abs20:45:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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