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2025-03-25 - 23:14
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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 rackeslot6.osadl.org (updated Tue Mar 25, 2025 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1947599118107,8cyclictest44017-21gpgv08:25:010
1947599115100,12cyclictest24464-21apt-get07:25:000
1947599113105,6cyclictest48975-21kworker/u8:3+events_unbound08:55:220
1947999112101,9cyclictest95926-21latency_hist11:35:011
1947999112101,9cyclictest95926-21latency_hist11:35:001
194799911199,9cyclictest104418-21latency_hist12:05:011
194759910895,10cyclictest3105085-21systemd-journal09:05:000
194759910696,4cyclictest77138-21kworker/u8:3+events_unbound11:00:270
194759910597,6cyclictest56181-21kworker/u8:1+flush-179:009:15:010
194799910496,5cyclictest111322-21apt-get12:35:031
194759910490,11cyclictest63769-21apt-get09:30:060
194759910093,5cyclictest106902-21kworker/u8:1+events_unbound12:30:150
194759910087,10cyclictest72041-21latency_hist10:00:010
19479999988,8cyclictest63512-21latency_hist09:30:001
19475999983,12cyclictest3105085-21systemd-journal08:25:010
19475999892,4cyclictest34367-21kworker/u8:2+events_unbound08:15:140
19475999889,6cyclictest113174-21latency_hist12:40:010
19479999485,6cyclictest19643-21kworker/u8:2+flush-179:007:20:001
19475999487,4cyclictest3105085-21systemd-journal11:40:000
19479999384,6cyclictest41718-21kworker/u8:0+flush-179:009:00:231
19475999384,6cyclictest23910-21kworker/u8:0+flush-179:007:50:170
19479999279,10cyclictest89288-21apt-get11:10:081
19479999181,8cyclictest93948-21store11:25:011
19475999186,4cyclictest97567-21kworker/u8:1+events_unbound11:40:230
19475999079,8cyclictest35935-21latency_hist08:00:010
19475999078,9cyclictest3105085-21systemd-journal07:40:020
19479998877,8cyclictest48929-21latency_hist08:40:011
19475998883,4cyclictest73952-21kworker/u8:2+events_unbound10:35:240
19475998883,4cyclictest41718-21kworker/u8:0+events_unbound08:35:250
19479998679,5cyclictest61638-21kworker/u8:3+flush-179:009:20:231
19475998676,7cyclictest99644-21latency_hist11:50:010
19475998674,9cyclictest94593-21apt-get11:30:080
19475998674,9cyclictest94593-21apt-get11:30:070
19475998581,3cyclictest77138-21kworker/u8:3+events_unbound10:40:240
19475998580,4cyclictest104714-21kworker/u8:2+events_unbound12:15:240
19475998472,9cyclictest104934-21apt-get12:10:080
19475998278,3cyclictest34310-21kworker/u8:1+events_unbound08:00:240
19475998175,4cyclictest95906-21kworker/u8:0+events_unbound12:00:210
19475998076,3cyclictest95906-21kworker/u8:0+events_unbound11:50:220
19475998076,3cyclictest95906-21kworker/u8:0+events_unbound11:50:220
19475998076,3cyclictest56181-21kworker/u8:1+events_unbound09:15:240
19475998070,7cyclictest26547-21apt-get07:30:140
19479997862,13cyclictest60317-21apt-get09:15:121
4505291770,18ptp4l441ktimers/307:08:403
19475997764,10cyclictest21247-21apt-get07:15:120
19479997668,6cyclictest72021-21kworker/u8:0+flush-179:010:00:251
19479997666,7cyclictest104678-21latency_hist12:10:011
19475997671,4cyclictest73952-21kworker/u8:2+events_unbound10:59:510
19475997564,8cyclictest92219-21latency_hist11:20:010
19479997466,4cyclictest41718-21kworker/u8:0+flush-179:008:25:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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