You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-03-16 - 12:52
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 Mon Mar 16, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21382019910291,8cyclictest2209298-21latency_hist22:50:010
2138201999889,7cyclictest266-21systemd-journal21:15:000
2138202999783,10cyclictest266-21systemd-journal00:04:001
2138202997869,6cyclictest2241716-21latency_hist00:30:011
2138201997868,7cyclictest2172157-21latency_hist20:55:000
2138201997562,11cyclictest2231582-21latency_hist00:00:020
2138201997362,8cyclictest2159182-21apt-get20:15:000
2138202997266,5cyclictest2191397-21kworker/u8:1+flush-179:022:04:551
2138201997264,6cyclictest2223624-21latency_hist23:35:010
2138201997259,8cyclictest2230040-21kworker/u8:2+flush-179:000:00:230
2138201997162,6cyclictest2238282-21latency_hist00:20:010
2138201997057,10cyclictest2176924-21kworker/u8:1+flush-179:021:25:130
2138202996856,10cyclictest2169243-21apt-get20:45:121
2138202996758,6cyclictest2157576-21latency_hist20:10:001
2138202996754,11cyclictest2204249-21kworker/u8:1+flush-179:023:25:001
2138202996657,6cyclictest2173775-21latency_hist21:00:021
2138201996660,4cyclictest2164250-21kworker/u8:1+flush-179:020:45:260
2138201996558,5cyclictest2197313-21kworker/u8:3+flush-179:022:55:240
2138201996556,6cyclictest2204249-21kworker/u8:1+flush-179:023:20:200
2138201996554,9cyclictest2193385-21apt-get22:00:120
2138201996551,9cyclictest266-21systemd-journal20:20:000
2138201996454,7cyclictest2154310-21kworker/u8:3+flush-179:020:00:010
2138201996454,7cyclictest2154310-21kworker/u8:3+flush-179:020:00:000
2138201996448,11cyclictest510-21rs:main0
2138201996250,8cyclictest2153409-21kworker/u8:2+flush-179:020:00:230
2138201996156,4cyclictest714-21Xorg21:39:000
2138201995948,7cyclictest2164250-21kworker/u8:1+flush-179:020:40:200
2138201995943,12cyclictest2239880-21apt-get00:25:010
2138201995943,12cyclictest2239880-21apt-get00:25:000
2138201995850,6cyclictest266-21systemd-journal23:08:200
2138201995848,7cyclictest2184894-21latency_hist21:35:010
2138201995847,8cyclictest2181703-21kworker/u8:0+flush-179:021:50:210
2138202995648,6cyclictest2207453-21latency_hist22:45:011
2138202995646,8cyclictest2233740-21/usr/sbin/munin00:05:231
2138201995647,6cyclictest2136816-21kworker/u8:1+flush-179:019:25:200
2138201995547,5cyclictest2228403-21latency_hist23:50:010
2138202995451,2cyclictest0-21swapper/119:42:001
2138202995445,7cyclictest2161271-21/usr/sbin/munin20:20:241
2138202995444,8cyclictest2231656-21cupsd00:00:001
2138201995448,4cyclictest2179633-21kworker/u8:2+events_unbound21:20:230
2138201995444,8cyclictest2214115-21kworker/u8:3+flush-179:023:15:210
2138201995443,7cyclictest2197313-21kworker/u8:3+flush-179:022:35:190
2138202995341,9cyclictest2223862-21/usr/sbin/munin23:35:251
2138201995349,3cyclictest2170616-21kworker/u8:0+flush-179:020:55:570
2138201995344,6cyclictest2181703-21kworker/u8:0+events_unbound22:05:230
2138201995246,4cyclictest2160987-21kworker/u8:0+flush-179:020:25:020
2138202995144,5cyclictest2213035-21diskstats23:00:151
2138202995142,7cyclictest2154310-21kworker/u8:3+flush-179:020:30:221
2138201995144,5cyclictest2181703-21kworker/u8:0+events_unbound22:15:240
2138201995142,6cyclictest2160987-21kworker/u8:0+flush-179:020:30:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional