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2026-03-31 - 18:05

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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 100 highest latencies:
System rack0slot6s.osadl.org (updated Tue Mar 31, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21066632254246,5sleep30-21swapper/319:07:1113
21035032236217,12sleep170-21swapper/1719:05:049
21067202235216,12sleep70-21swapper/719:07:5517
21067392234212,14sleep180-21swapper/1819:08:0510
21066512234227,4sleep130-21swapper/1319:07:015
21065562233213,12sleep90-21swapper/919:05:5519
21068542231212,12sleep00-21swapper/019:09:270
21068352231212,12sleep40-21swapper/419:09:1214
21068122231210,13sleep120-21swapper/1219:08:594
21035052230209,13sleep190-21swapper/1919:05:0511
21065242229210,12sleep100-21swapper/1019:05:362
21068672228208,12sleep80-21swapper/819:09:3518
21065762228208,12sleep60-21swapper/619:06:1416
21065252228208,12sleep110-21swapper/1119:05:373
21035002228209,12sleep150-21swapper/1519:05:027
21066652226206,13sleep50-21swapper/519:07:1315
21066332226207,12sleep20-21swapper/219:06:4912
21065282225205,13sleep140-21swapper/1419:05:416
21035022225205,12sleep160-21swapper/1619:05:038
21067682220200,12sleep10-21swapper/119:08:281
210723399867,33cyclictest0-21swapper/020:02:040
210730099606,30cyclictest0-21swapper/1923:17:0211
210728399330,32cyclictest0-21swapper/1400:39:596
210724499320,0cyclictest0-21swapper/319:10:5913
2107300993131,0cyclictest0-21swapper/1919:10:5911
210723799310,0cyclictest0-21swapper/119:10:591
2107259992929,0cyclictest0-21swapper/819:10:5918
2107263992828,0cyclictest0-21swapper/900:39:5819
2107263992421,2cyclictest472371-21CPU19
2107239992415,9cyclictest0-21swapper/219:11:1712
210727899230,22cyclictest0-21swapper/1219:10:594
210726399231,1cyclictest472371-21CPU19
210730099220,1cyclictest472371-21CPU11
210728099220,21cyclictest0-21swapper/1319:11:195
210726399220,1cyclictest472370-21CPU19
210725799220,3cyclictest2282288-21/usr/sbin/munin22:30:2017
2107249992219,2cyclictest472371-21CPU15
210723999220,21cyclictest0-21swapper/219:15:3312
210730099210,21cyclictest0-21swapper/1921:05:1911
210730099210,21cyclictest0-21swapper/1920:25:1811
210730099210,21cyclictest0-21swapper/1919:35:1611
210730099210,20cyclictest472371-21CPU11
210729699210,21cyclictest0-21swapper/1819:10:4910
2107291992120,1cyclictest0-21swapper/1600:39:598
2107287992110,11cyclictest0-21swapper/1519:29:597
210727899211,19cyclictest472370-21CPU4
210726399210,21cyclictest0-21swapper/919:15:3019
2107259992119,1cyclictest472371-21CPU18
210725799210,20cyclictest2108606-21expr19:10:1217
2107254992119,1cyclictest7504-21CPU16
2107247992110,11cyclictest0-21swapper/422:17:5914
2107247992110,11cyclictest0-21swapper/422:17:5814
2107233992120,1cyclictest2085230-21kworker/0:0+pm19:11:340
2107300992020,0cyclictest2333155-21strings23:30:1811
2107296992020,0cyclictest0-21swapper/1819:54:1610
210729699200,20cyclictest0-21swapper/1822:30:1810
210729199200,19cyclictest0-21swapper/1600:27:258
2107278992015,4cyclictest2363882-21gnome-shell22:39:594
2107263992020,0cyclictest0-21swapper/923:55:2019
2107263992020,0cyclictest0-21swapper/921:20:1719
2107263992020,0cyclictest0-21swapper/900:30:1619
210726399200,20cyclictest0-21swapper/922:10:2019
210726399200,20cyclictest0-21swapper/922:10:1919
210726399200,0cyclictest2360068-21ssh00:03:0619
2107259992020,0cyclictest0-21swapper/823:55:2018
2107259992020,0cyclictest0-21swapper/800:35:1818
210725499200,19cyclictest0-21swapper/621:23:1916
210724999200,19cyclictest0-21swapper/519:50:1515
210724799200,19cyclictest2109121-21tune2fs19:10:1314
2107237992020,0cyclictest0-21swapper/100:39:591
2107300991919,0cyclictest0-21swapper/1920:30:1711
210730099190,19cyclictest0-21swapper/1919:15:3311
2107296991919,0cyclictest2200781-21strings20:55:1710
2107296991919,0cyclictest0-21swapper/1823:18:2110
2107296991919,0cyclictest0-21swapper/1820:20:1710
2107296991918,1cyclictest0-21swapper/1800:40:0010
210729699190,19cyclictest0-21swapper/1800:15:1710
210729699190,0cyclictest0-21swapper/1820:15:1610
210729499190,19cyclictest0-21swapper/1719:10:519
210729499190,0cyclictest0-21swapper/1721:20:179
210729199190,19cyclictest0-21swapper/1619:10:528
210728799198,11cyclictest0-21swapper/1523:16:597
210728799190,1cyclictest2108547-21cstates19:10:127
210728399190,19cyclictest0-21swapper/1419:10:486
2107269991919,0cyclictest0-21swapper/1023:30:132
2107269991919,0cyclictest0-21swapper/1019:17:432
2107263991919,0cyclictest0-21swapper/922:45:1719
2107263991919,0cyclictest0-21swapper/900:15:1619
2107259991919,0cyclictest2360072-21ssh00:03:0818
2107259991919,0cyclictest0-21swapper/822:05:2018
2107259991919,0cyclictest0-21swapper/822:05:1918
2107259991919,0cyclictest0-21swapper/819:25:1818
210725799190,19cyclictest0-21swapper/719:45:1517
210725799190,0cyclictest0-21swapper/721:35:1917
2107254991915,3cyclictest2363882-21gnome-shell00:37:5916
210725499190,19cyclictest0-21swapper/623:05:2016
210724999190,19cyclictest0-21swapper/519:10:4515
210724799197,11cyclictest472371-21CPU14
210724799191,16cyclictest472371-21CPU14
210723999198,11cyclictest0-21swapper/221:43:5812
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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