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2025-12-09 - 14:23
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack0slot7.osadl.org (updated Tue Dec 09, 2025 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3415780994340,433cyclictest0-21swapper/1500:13:417
34157809941822,395cyclictest0-21swapper/1500:32:597
34157809941822,395cyclictest0-21swapper/1500:32:597
34157419941813,401cyclictest0-21swapper/400:14:3310
34157579941710,403cyclictest0-21swapper/800:27:2214
34157579941710,403cyclictest0-21swapper/800:27:2214
34157419941612,402cyclictest0-21swapper/400:18:2110
34157419941410,401cyclictest0-21swapper/400:38:5910
341573599409409,0cyclictest0-21swapper/200:25:248
341573599409409,0cyclictest0-21swapper/200:25:248
3415770994087,401cyclictest0-21swapper/1200:26:424
3415770994087,401cyclictest0-21swapper/1200:26:424
3415780993990,398cyclictest0-21swapper/1500:15:587
341577799397397,0cyclictest0-21swapper/1400:31:256
341577799397397,0cyclictest0-21swapper/1400:31:256
341576199390387,3cyclictest390842-21Renderer00:13:4115
341578099386386,0cyclictest0-21swapper/1500:26:447
341578099386386,0cyclictest0-21swapper/1500:26:447
341574799384382,2cyclictest0-21swapper/500:38:3611
3415780993730,372cyclictest0-21swapper/1500:37:587
341576599372369,3cyclictest323654-21Xorg00:32:412
341576599372369,3cyclictest323654-21Xorg00:32:412
341574799368367,1cyclictest0-21swapper/500:28:4911
341574799368367,1cyclictest0-21swapper/500:28:4911
341577599364361,2cyclictest441999-21kworker/13:0+events00:38:365
341573599364358,4cyclictest0-21swapper/200:32:418
341573599364358,4cyclictest0-21swapper/200:32:418
341574199362360,2cyclictest390842-21Renderer00:26:4310
341574199362360,2cyclictest390842-21Renderer00:26:4210
341575799360360,0cyclictest0-21swapper/800:30:4514
341575799360360,0cyclictest0-21swapper/800:30:4514
341572799360356,4cyclictest368437-21kworker/0:1+events00:27:230
341572799360356,4cyclictest368437-21kworker/0:1+events00:27:220
341575799354353,1cyclictest0-21swapper/800:15:2214
341574799351350,1cyclictest323654-21Xorg00:17:4011
341577599349347,2cyclictest217274-21kworker/13:2+events00:28:495
341577599349347,2cyclictest217274-21kworker/13:2+events00:28:495
341573199349348,1cyclictest0-21swapper/100:30:231
341573199349348,1cyclictest0-21swapper/100:30:231
341576599346342,3cyclictest179789-21kworker/10:1+events00:25:242
341576599346342,3cyclictest179789-21kworker/10:1+events00:25:232
341577099344342,2cyclictest4127991-21kworker/12:1+events00:21:224
341574199343342,1cyclictest0-21swapper/400:23:2910
341575599342340,2cyclictest323925-21gnome-shell00:32:5913
341575599342340,2cyclictest323925-21gnome-shell00:32:5813
341573199342340,2cyclictest0-21swapper/100:22:161
341573799340340,0cyclictest902-21md1_raid100:16:589
341575599336336,0cyclictest2343-21snmpd00:13:4013
341576799335333,2cyclictest323925-21gnome-shell00:16:583
3415777993290,24cyclictest0-21swapper/1400:18:456
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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