You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-01-09 - 11:20
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 Fri Jan 09, 2026 00:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
212823999130119,8cyclictest2222096-40mandb00:00:011
21282359910192,6cyclictest2157417-21latency_hist20:40:010
21282399910077,20cyclictest2170151-21latency_hist21:20:011
2128239999686,7cyclictest2191349-21latency_hist22:25:011
2128239999470,21cyclictest2171735-21latency_hist21:25:021
2128235999484,7cyclictest2197714-21latency_hist22:45:000
2128235999281,9cyclictest2186327-21apt-get22:10:000
2128239998782,3cyclictest2210677-21kworker/u8:1+flush-179:023:35:241
2128235998776,8cyclictest2213875-21latency_hist23:35:010
2128239998273,7cyclictest2181271-21latency_hist21:55:001
2128235998278,3cyclictest2210677-21kworker/u8:1+flush-179:023:45:230
2128235998278,3cyclictest2210677-21kworker/u8:1+flush-179:023:45:230
2128235998250,1cyclictest0-21swapper/019:58:580
2128239997869,7cyclictest2182863-21apt-get22:00:011
2128235997669,5cyclictest2184763-21kworker/u8:3+events_unbound22:15:250
2128235997567,6cyclictest2225370-21kworker/u8:1+events_unbound00:25:010
2128235997468,4cyclictest2213861-21kworker/u8:0+flush-179:023:40:210
2128239997241,22cyclictest2128234-21cyclictest22:40:581
2128235997267,3cyclictest2215516-21kworker/u8:2+events_unbound23:50:020
2128235997267,3cyclictest2215516-21kworker/u8:2+events_unbound23:50:020
2128239997055,10cyclictest2149376-21kworker/u8:1+flush-179:020:55:231
2128235996961,6cyclictest2159008-21latency_hist20:45:000
2128239996861,5cyclictest2144653-21latency_hist20:00:011
2128239996859,6cyclictest2194522-21latency_hist22:35:011
2128239996857,8cyclictest2201119-21/usr/sbin/munin22:55:211
2128235996861,5cyclictest2162150-21kworker/u8:2+flush-179:021:50:220
2128235996761,4cyclictest2179721-21kworker/u8:1+flush-179:022:35:160
2128235996761,4cyclictest2179721-21kworker/u8:1+flush-179:022:35:160
2128235996660,4cyclictest2149376-21kworker/u8:1+events_unbound21:00:220
2128235996660,4cyclictest2149376-21kworker/u8:1+events_unbound21:00:220
2128235996660,4cyclictest2143268-21kworker/u8:0+flush-179:020:15:170
2128239996556,6cyclictest2152591-21latency_hist20:25:001
2128239996555,7cyclictest2178102-21latency_hist21:45:011
2128239996453,8cyclictest2184763-21kworker/u8:3+events_unbound22:15:011
2128239996453,8cyclictest2184763-21kworker/u8:3+events_unbound22:15:001
2128235996459,3cyclictest2130689-21kworker/u8:1+flush-179:019:17:540
2128235996458,4cyclictest2225370-21kworker/u8:1+flush-179:000:15:180
2128235996457,4cyclictest2203452-21kworker/u8:1+flush-179:023:05:180
2128244996360,2cyclictest0-21swapper/220:01:582
2128235996358,3cyclictest2115790-21kworker/u8:0+flush-179:019:20:140
2128235996257,3cyclictest2145692-21kworker/u8:1+events_unbound20:00:230
2128235996251,9cyclictest2209368-21apt-get23:20:090
2128235996153,6cyclictest266-21systemd-journal20:50:000
2128239996051,7cyclictest2149397-21latency_hist20:15:011
2128239996051,7cyclictest2149397-21latency_hist20:15:011
2128235996051,7cyclictest2149376-21kworker/u8:1+flush-179:021:00:010
212823599600,58cyclictest2233332-21munin-run00:35:010
2128235995952,5cyclictest2203452-21kworker/u8:1+flush-179:023:15:000
2128239995852,4cyclictest2149376-21kworker/u8:1+events_unbound20:40:231
2128235995852,4cyclictest2199342-21kworker/u8:3+flush-179:023:00:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional