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2026-09-13 - 08:31
OSADL QA Farm

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #e, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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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 Sun Sep 13, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
225237299145131,11cyclictest1213033-21systemd-journal19:50:001
225236899135126,6cyclictest2292610-21kworker/u8:1+events_unbound22:30:010
225237299132108,20cyclictest2307441-21latency_hist22:00:011
225236899132127,4cyclictest2297390-21kworker/u8:0+events_unbound21:35:000
225236899132126,5cyclictest2255703-21kworker/u8:2+flush-179:019:55:010
225237299128118,7cyclictest1213033-21systemd-journal20:15:001
225236899126119,6cyclictest2281418-21kworker/u8:3+events_unbound20:45:000
225236899124118,4cyclictest2352541-21kworker/u8:3+events_unbound00:30:290
225237299122112,8cyclictest2286243-21kworker/u8:3+events_unbound21:20:011
225236899122117,4cyclictest2300506-21kworker/u8:2+events_unbound21:50:260
225236899122110,9cyclictest2337661-21latency_hist23:35:010
225236899121112,7cyclictest2255703-21kworker/u8:2+events_unbound19:35:240
225236899121112,6cyclictest2276661-21kworker/u8:2+events_unbound20:25:180
225237299120109,7cyclictest2346146-21cat00:00:031
225236899120115,4cyclictest2300506-21kworker/u8:2+events_unbound21:55:240
225236899119110,7cyclictest2286185-21kworker/u8:2+flush-179:020:55:210
225236899117108,6cyclictest1-21systemd22:50:010
225236899117105,4cyclictest2255704-21kworker/u8:3+events_unbound19:25:010
225237299116102,9cyclictest2318800-21kworker/u8:0+flush-179:022:40:221
225236899116109,5cyclictest2328100-21kworker/u8:2+flush-179:023:40:200
225237299114103,8cyclictest2326518-21latency_hist23:00:011
225236899114108,5cyclictest2255704-21kworker/u8:3+events_unbound19:25:260
225236899114106,6cyclictest2318800-21kworker/u8:0+events_unbound22:40:260
225236899114104,8cyclictest2303718-21latency_hist21:50:000
225237299113104,6cyclictest2271754-21gpgv20:10:021
225237299113104,6cyclictest2255705-21/usr/sbin/munin19:20:261
225237299112100,8cyclictest2255479-21latency_hist19:20:021
225237299112100,10cyclictest2288070-21apt-get21:00:131
225236899111104,5cyclictest2318800-21kworker/u8:0+flush-179:022:50:280
225236899111103,6cyclictest2341386-21kworker/u8:1+flush-179:023:50:160
225236899111103,6cyclictest2255703-21kworker/u8:2+events_unbound19:55:240
22523729911098,9cyclictest2292610-21kworker/u8:1+flush-179:022:05:221
22523729910999,7cyclictest2255704-21kworker/u8:3+flush-179:019:40:001
22523729910896,8cyclictest2328100-21kworker/u8:2+flush-179:023:30:151
22523689910898,8cyclictest1213033-21systemd-journal00:04:010
22523689910898,8cyclictest1213033-21systemd-journal00:04:000
22523729910698,5cyclictest2286185-21kworker/u8:2+flush-179:021:10:001
22523729910698,5cyclictest2258684-21kworker/u8:0+flush-179:019:30:231
22523729910696,7cyclictest2253857-21latency_hist19:15:011
22523689910699,6cyclictest2328100-21kworker/u8:2+flush-179:023:25:250
225236899106100,4cyclictest2313852-21kworker/u8:3+flush-179:022:35:240
22523689910599,4cyclictest2292610-21kworker/u8:1+flush-179:021:20:250
22523689910599,4cyclictest2292610-21kworker/u8:1+flush-179:021:20:250
22523689910599,4cyclictest2275035-21kworker/u8:1+flush-179:020:20:260
22523689910599,4cyclictest2266567-21kworker/u8:0+flush-179:020:30:200
22523729910499,3cyclictest2292610-21kworker/u8:1+flush-179:021:30:191
22523729910468,20cyclictest2357407-21latency_hist00:35:001
22523689910497,5cyclictest2350699-21kworker/u8:1+flush-179:000:25:210
22523689910397,4cyclictest2284082-21kworker/u8:1+flush-179:020:50:150
22523689910395,6cyclictest2292610-21kworker/u8:1+events_unbound22:25:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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