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2026-06-09 - 01:10

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #2

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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack8slot2s.osadl.org (updated Mon Jun 08, 2026 12:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2302963997565,6cyclictest86-21hwrng11:25:213
2302960997563,5cyclictest86-21hwrng12:15:320
2302963997465,6cyclictest86-21hwrng11:45:503
2302960997468,4cyclictest86-21hwrng12:37:020
2302960997468,4cyclictest86-21hwrng12:37:020
230296099741,19cyclictest2436075-21modprobe11:43:060
230296099741,19cyclictest2436075-21modprobe11:43:060
2302962997367,4cyclictest0-21swapper/211:56:042
2302960997361,8cyclictest86-21hwrng07:45:120
2302963997264,5cyclictest86-21hwrng09:20:253
2302962997266,3cyclictest0-21swapper/212:36:002
2302962997266,3cyclictest0-21swapper/212:36:002
2302961997064,3cyclictest0-21swapper/111:13:041
2302961997064,3cyclictest0-21swapper/110:42:211
2302962996964,3cyclictest0-21swapper/212:12:272
2302963996860,5cyclictest86-21hwrng10:14:423
2302963996860,5cyclictest86-21hwrng09:35:473
2302962996863,3cyclictest0-21swapper/207:39:032
2302963996759,5cyclictest86-21hwrng10:48:293
2302962996760,4cyclictest0-21swapper/207:53:232
2302962996661,3cyclictest0-21swapper/209:06:052
2302962996660,3cyclictest0-21swapper/208:03:372
2302962996559,3cyclictest0-21swapper/210:36:122
2302961996559,3cyclictest0-21swapper/110:26:591
230296099651,17cyclictest2402583-21ntpq10:50:400
230296099651,11cyclictest2468619-21sshd-session12:31:100
230296099651,11cyclictest2468619-21sshd-session12:31:100
2302963996457,5cyclictest86-21hwrng10:50:323
2302962996457,4cyclictest0-21swapper/207:20:372
2302961996457,4cyclictest0-21swapper/110:02:241
2302961996457,4cyclictest0-21swapper/110:02:241
2302961996457,3cyclictest0-21swapper/112:22:421
2302961996457,3cyclictest0-21swapper/112:22:421
2302960996455,6cyclictest86-21hwrng10:19:490
230296099641,6cyclictest614-21CodeMeterLin09:15:320
230296099641,21cyclictest2466085-21ssh12:28:190
230296099641,20cyclictest2442718-21ssh11:53:050
230296099641,19cyclictest2304722-21/usr/sbin/munin07:15:540
230296099641,19cyclictest2304722-21/usr/sbin/munin07:15:540
2302960996354,6cyclictest86-21hwrng10:37:130
2302960996353,7cyclictest86-21hwrng10:32:060
230296099631,21cyclictest2422038-21ssh11:21:110
230296099631,20cyclictest2438094-21ssh11:45:500
230296099631,19cyclictest2336803-21/usr/sbin/munin08:55:300
2302963996255,5cyclictest86-21hwrng09:34:463
2302963996254,5cyclictest86-21hwrng07:34:573
2302963996252,7cyclictest86-21hwrng08:14:533
230296099621,22cyclictest2419494-21ssh11:18:060
230296099621,22cyclictest2313943-21sshd-auth07:44:070
230296099621,22cyclictest2313943-21sshd-auth07:44:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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