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2026-08-04 - 22:10
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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 Tue Aug 04, 2026 12:46:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
240509968083746,3060cyclictest9813-21kworker/0:007:12:190
240509943492405,1934cyclictest9813-21kworker/0:007:15:380
237192780187,203sleep00-21swapper07:07:550
240509956353,224cyclictest6797-21munin-node11:45:350
240509952929,317cyclictest4305-21snmpd11:56:280
240509951353,400cyclictest22255-21ssh11:05:530
240509951252,399cyclictest4478-21diskmemload11:53:390
240509950953,395cyclictest4478-21diskmemload09:23:300
240509950753,393cyclictest4478-21diskmemload09:13:120
240509950654,439cyclictest4880-31copy07:42:430
240509950654,439cyclictest23184-21ssh12:23:450
240509950653,392cyclictest9273-21ssh10:35:460
240509950553,391cyclictest4478-21diskmemload12:09:320
240509950455,389cyclictest17316-21grep10:55:140
240509950452,439cyclictest25710-21ssh09:58:580
240509950253,388cyclictest4305-21snmpd10:51:420
240509950227,239cyclictest9030-21chrt07:54:370
240509950153,386cyclictest4478-21diskmemload12:31:170
240509950052,387cyclictest5927-21ssh10:27:170
240509949930,399cyclictest10582-21sshd07:57:020
240509949353,268cyclictest23676-21munin-node12:25:240
240509949253,425cyclictest4924-21runrttasks09:17:020
240509949053,259cyclictest20465-21python11:01:160
240509948554,417cyclictest20726-21ssh12:17:000
240509948445,264cyclictest4478-21diskmemload10:18:150
240509948233,390cyclictest23383-21kworker/u2:211:12:550
240509948229,392cyclictest23607-21kworker/u2:309:54:470
240509948153,369cyclictest4478-21diskmemload11:26:090
240509948127,394cyclictest11-21ksoftirqd/011:19:100
240509947955,363cyclictest30938-21awk10:10:490
240509947952,365cyclictest30625-21sed12:40:470
240509947853,364cyclictest2636-21munin-node09:05:440
240509947652,246cyclictest12850-21munin-node12:01:130
240509947554,359cyclictest4478-21diskmemload10:20:380
240509947455,359cyclictest4478-21diskmemload12:37:240
240509947230,427cyclictest28188-21munin-node10:05:100
240509947155,355cyclictest4924-21runrttasks08:15:190
240509947152,359cyclictest1647-21ssh11:33:550
240509947052,356cyclictest329-21expr07:30:400
240509946853,355cyclictest15411-21ssh09:35:210
240509946652,354cyclictest4478-21diskmemload10:30:090
240509945955,345cyclictest27782-21ssh10:03:330
240509945731,364cyclictest11776-21if_err_eth010:41:090
240509945654,341cyclictest4478-21diskmemload11:37:360
240509945530,411cyclictest14383-21chrt08:07:530
24050994514,434cyclictest19034-21ssh09:42:370
240509945028,353cyclictest15978-21timerwakeupswit08:11:110
240509944974,362cyclictest12236-21chrt09:26:330
24050994434,370cyclictest4478-21diskmemload09:45:190
240509944153,375cyclictest3050irq/9-acpi10:49:080
240509944127,401cyclictest14592-21kworker/u2:109:32:280
240509943853,371cyclictest4478-21diskmemload11:25:030
240509943464,358cyclictest13-21rcuc/011:41:500
24050994341,374cyclictest0-21swapper08:37:490
24050994330,374cyclictest18591-21ssh12:12:040
240509942375,289cyclictest1735-21python09:00:550
240509941839,366cyclictest30321-21ntpq07:25:190
240509941743,361cyclictest13-21rcuc/007:20:130
240509941053,334cyclictest2616-21grep07:36:080
240509940953,342cyclictest30983-21chrt08:52:380
240509940855,339cyclictest32164-21strings08:55:440
240509940554,338cyclictest27228-21seq08:42:010
240509940152,336cyclictest897-21jbd2/sda1-808:20:060
240509939235,357cyclictest0-21swapper07:49:540
240509938128,293cyclictest235922sleep008:32:400
240509938038,342cyclictest0-21swapper08:47:130
240509937631,345cyclictest0-21swapper08:00:070
240509935826,318cyclictest20555-21tail08:25:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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