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2026-06-28 - 08:28
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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 Sun Jun 28, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121239930721957,1113cyclictest31165-21kworker/0:119:12:060
116622782186,203sleep00-21swapper19:07:200
121239948835,439cyclictest2116-21ssh23:46:470
121239948735,439cyclictest14643-21ssh00:14:480
121239948735,438cyclictest30191-21ssh23:38:120
121239948734,439cyclictest1714-21ssh22:37:390
121239948635,438cyclictest3223-21ssh21:31:410
121239948634,439cyclictest20612-21ssh22:09:570
121239948634,439cyclictest16704-21ssh00:18:400
121239948633,440cyclictest14073-21ssh23:04:350
121239948534,438cyclictest4305-21snmpd20:44:050
121239948532,439cyclictest26070-21ssh00:38:300
121239948454,370cyclictest11-21ksoftirqd/021:27:480
121239948432,438cyclictest20857-21ssh23:18:350
121239947235,437cyclictest0-21swapper20:29:420
121239946733,434cyclictest0-21swapper22:59:140
121239946431,373cyclictest11-21ksoftirqd/022:20:560
121239944532,352cyclictest30761-21perl21:21:240
121239944064,372cyclictest11733-21rm00:07:160
121239944049,376cyclictest3010-21munin-node23:50:230
121239943857,368cyclictest13-21rcuc/022:00:510
121239942734,380cyclictest351950irq/10-yenta21:11:070
121239942034,204cyclictest7541-21ssh23:59:250
121239941742,87cyclictest0-21swapper19:26:520
121239941644,358cyclictest0-21swapper00:29:340
121239941620,382cyclictest13-21rcuc/021:41:020
121239941518,383cyclictest21603-21munin-node23:20:270
121239941242,88cyclictest0-21swapper23:44:360
121239941153,345cyclictest29707-21kworker/u2:323:06:430
121239941132,366cyclictest0-21swapper00:33:360
121239941031,366cyclictest28182-21cpu22:25:330
121239940834,315cyclictest15806-21sshd21:59:350
121239940833,362cyclictest11-21ksoftirqd/022:11:440
121239940731,88cyclictest18563-21ssh23:13:430
121239940633,360cyclictest12-21rcu_preempt00:00:200
121239940534,358cyclictest28932-21ssh21:18:050
121239940442,349cyclictest0-21swapper20:18:470
121239940333,356cyclictest4071-21ssh22:42:140
121239940331,359cyclictest27287-21proc_pri23:31:260
121239940331,358cyclictest4290-21ssh21:35:150
121239940331,311cyclictest18196-21latency00:21:080
121239940232,355cyclictest2319-21latency_hist20:10:040
121239940231,310cyclictest4224-21lldpd22:50:410
121239940136,351cyclictest24700-21diskmemload21:54:220
121239940132,355cyclictest5773-21ssh22:46:030
121239939934,189cyclictest21729-21runrttasks19:34:310
121239939833,351cyclictest23049-21ps19:36:000
121239939733,305cyclictest32345-21ssh22:34:530
121239939542,293cyclictest0-21swapper21:03:560
121239939532,191cyclictest22976-21egrep21:05:130
121239939435,87cyclictest0-21swapper23:26:060
121239939334,347cyclictest3762-21grep20:11:030
121239939334,290cyclictest25629-21munin-node19:45:470
121239939134,344cyclictest9381-21ssh21:45:350
121239939122,309cyclictest0-21swapper20:46:370
121239938733,340cyclictest11057-21perl20:30:580
121239938728,301cyclictest24700-21diskmemload22:18:410
121239938633,339cyclictest15883-21apt-get19:17:090
121239938633,114cyclictest4924-21runrttasks19:55:260
121239938535,290cyclictest7616-21sshd20:21:350
121239938232,167cyclictest16955-21unixbench_singl19:20:320
121239938231,289cyclictest24512-21seq19:40:370
121239938229,114cyclictest28603-21ps19:50:590
121239938132,288cyclictest18433-19udisks-probe-at20:50:550
121239938013,353cyclictest31187-21munin-node20:00:290
121239937431,173cyclictest11836-21grep20:35:110
121239934134,293cyclictest4248-21nscd20:55:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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