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2025-12-06 - 15:00
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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 50 highest latencies:
System rackeslot2.osadl.org (updated Sat Dec 06, 2025 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41823222970,2sleep30-21swapper/323:30:203
38292162880,2sleep30-21swapper/319:45:093
3783366992822,2cyclictest17450irq/132-ahci[0000:00:17.0]00:35:000
41216722250,2sleep20-21swapper/222:55:322
3783367992515,3cyclictest37926-21kthreadcore00:00:161
3783367992514,3cyclictest52441-21/usr/sbin/munin00:10:151
39448522230,1sleep13944856-21cut21:15:161
3783367992320,2cyclictest0-21swapper/120:50:001
378336699225,7cyclictest4124857-21aten2.4-expect23:00:070
3783366992216,2cyclictest170550irq/121-eno123:10:140
3783366992215,6cyclictest4072446-21/usr/sbin/munin22:30:020
3783366992214,4cyclictest3933517-21cstates21:10:090
3783366992211,6cyclictest4119779-21kthreadcore22:55:160
3783370992119,1cyclictest0-21swapper/221:54:412
3783367992118,2cyclictest4028751-21grep22:05:011
3783367992112,1cyclictest170550irq/121-eno119:20:071
378336699217,7cyclictest4189125-21kthreadcore23:35:160
378336699216,9cyclictest70218-21aten2.4-expect00:20:070
3783366992119,1cyclictest34604-21latency_hist00:00:000
3783366992111,4cyclictest3895633-21sshd20:36:340
3783370992017,1cyclictest0-21swapper/200:30:022
3783370992010,2cyclictest0-21swapper/222:30:342
378336799204,8cyclictest3967515-21systemd-run21:30:001
378336799204,8cyclictest3967515-21systemd-run21:30:001
378336699208,8cyclictest4048893-21grep22:15:170
378336699206,8cyclictest79030-21aten2.4-expect00:25:110
3783366992017,2cyclictest1635-21dbus-daemon22:55:010
3783366992014,5cyclictest3950407-21/usr/sbin/munin21:20:150
378336699201,10cyclictest102958-1ssh00:37:050
3783370991916,1cyclictest0-21swapper/200:15:012
378336799193,7cyclictest78459-21munin-run00:25:001
3783367991916,2cyclictest104646-21run-parts00:40:001
3783367991916,2cyclictest0-21swapper/100:30:021
3783367991910,2cyclictest170550irq/121-eno123:46:231
378336699195,9cyclictest52532-21aten2.4-expect00:10:070
378336699195,8cyclictest9112-21aten2.4-expect23:45:080
378336699193,5cyclictest3804237-21aten2.4-expect19:25:070
3783366991915,2cyclictest0-21swapper/020:50:000
3783366991914,4cyclictest3816671-21cpuspeed_turbos19:35:090
3783366991912,6cyclictest62136-21/usr/sbin/munin00:15:110
3783366991912,5cyclictest1803-21gdbus22:10:010
3783366991912,2cyclictest171ktimers/022:49:460
378336699191,16cyclictest0-21swapper/021:50:080
3783366991911,4cyclictest3908700-21aten2.4-expect20:50:080
3783366991910,5cyclictest4178184-21kthreadcore23:30:140
378336699190,5cyclictest3992611-21ssh21:43:240
302487291190,2phc2sys0-21swapper/321:10:393
378337099187,3cyclictest0-21swapper/220:40:012
3783370991815,1cyclictest0-21swapper/200:35:112
3783367991815,2cyclictest52268-21latency_hist00:10:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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