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2026-05-23 - 08:40

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow 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.

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 100 highest latencies:
System rackeslot6s.osadl.org (updated Sat May 23, 2026 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19113729915134,90cyclictest0-21swapper/022:00:320
1911372991121,72cyclictest0-21swapper/019:35:160
1911375997565,7cyclictest231ktimers/122:00:321
1911372995144,5cyclictest131ktimers/020:40:010
1911376995043,3cyclictest1940496-21sendmail22:00:002
1911376994941,5cyclictest1963472-21munin-plugin-st00:10:002
1911372994816,26cyclictest1955062-21latency_hist23:20:010
1911372994734,9cyclictest0-21swapper/023:50:280
1911375994639,4cyclictest1921647-21unixbench_multi20:05:281
191137599462,27cyclictest1953069-21apt-get23:10:021
1911376994535,6cyclictest1919982-21grep19:55:272
1911376994526,12cyclictest0-21swapper/220:25:292
1911375994529,11cyclictest0-21swapper/121:05:011
1911372994538,4cyclictest1964228-21grep00:10:280
1911372994532,8cyclictest0-21swapper/000:35:260
1911372994532,10cyclictest0-21swapper/020:55:000
1911376994428,11cyclictest311ktimers/223:15:142
1911376994427,12cyclictest0-21swapper/221:30:272
191137699440,32cyclictest1955151-21/usr/sbin/munin23:20:192
1911375994434,7cyclictest1955793-21munin-plugin-st23:25:001
1911375994434,6cyclictest1949583-21unixbench_multi22:45:281
1911372994432,8cyclictest0-21swapper/020:45:280
1911376994335,5cyclictest1913210-21grep19:15:282
1911376994335,4cyclictest0-21swapper/221:05:012
1911376994330,7cyclictest1953901-21grep23:10:282
1911376994330,7cyclictest0-21swapper/220:00:282
1911376994330,7cyclictest0-21swapper/220:00:282
191137699431,29cyclictest0-21swapper/222:35:022
1911375994332,8cyclictest1951382-21sendmail23:00:011
1911375994332,8cyclictest1951382-21sendmail23:00:001
1911375994331,7cyclictest0-21swapper/119:50:281
1911375994330,8cyclictest0-21swapper/122:40:281
1911375994330,8cyclictest0-21swapper/120:25:291
1911372994335,4cyclictest167350irq/118-8000000.ethernet-tx020:30:000
1911372994331,8cyclictest0-21swapper/023:20:290
1911376994234,5cyclictest1939655-21munin-plugin-st21:55:012
1911376994231,6cyclictest0-21swapper/200:30:262
1911376994226,8cyclictest0-21swapper/220:20:262
1911376994217,14cyclictest311ktimers/220:15:112
1911375994228,8cyclictest0-21swapper/120:30:291
1911375994226,11cyclictest0-21swapper/121:50:291
1911372994236,3cyclictest20650irq/252-8000000.ethernet21:35:000
1911372994235,4cyclictest20650irq/252-8000000.ethernet19:30:200
1911372994234,5cyclictest0-21swapper/021:15:200
1911372994234,5cyclictest0-21swapper/020:00:000
1911376994133,5cyclictest0-21swapper/223:05:282
1911376994133,5cyclictest0-21swapper/223:05:282
1911376994132,5cyclictest0-21swapper/222:15:272
1911376994125,13cyclictest311ktimers/220:10:152
1911375994132,6cyclictest1958387-21latency_hist23:40:011
1911375994131,7cyclictest1953072-21munin-plugin-st23:10:001
1911375994131,7cyclictest1953072-21munin-plugin-st23:09:591
1911375994128,8cyclictest0-21swapper/121:20:301
1911375994125,10cyclictest0-21swapper/120:45:281
1911372994134,4cyclictest20650irq/252-8000000.ethernet23:35:220
1911372994128,9cyclictest0-21swapper/019:10:290
1911376994030,6cyclictest0-21swapper/222:45:282
1911376994027,10cyclictest0-21swapper/200:25:262
1911376994026,5cyclictest0-21swapper/222:45:012
1911376994023,14cyclictest311ktimers/223:45:112
1911375994028,8cyclictest0-21swapper/100:10:291
1911375994027,8cyclictest0-21swapper/119:15:211
1911375994025,9cyclictest0-21swapper/121:55:281
1911375994025,10cyclictest0-21swapper/123:25:271
1911375994017,12cyclictest231ktimers/122:25:101
1911372994033,4cyclictest167350irq/118-8000000.ethernet-tx021:00:210
1911372994032,5cyclictest0-21swapper/023:10:270
1911372994029,8cyclictest0-21swapper/022:45:280
191137299401,33cyclictest0-21swapper/019:45:000
1911376993933,4cyclictest1945323-21unixbench_multi22:20:292
1911376993929,6cyclictest1927456-21cut20:40:262
1911376993929,5cyclictest0-21swapper/219:50:272
1911376993927,5cyclictest0-21swapper/222:00:062
1911376993926,7cyclictest0-21swapper/219:25:192
1911376993923,9cyclictest0-21swapper/219:35:262
1911375993924,8cyclictest0-21swapper/121:25:271
1911375993923,9cyclictest0-21swapper/121:44:591
191137599391,29cyclictest0-21swapper/122:10:281
1911372993933,4cyclictest47-21kauditd23:59:590
1911372993932,4cyclictest20850irq/208-8000000.ethernet00:00:260
1911372993932,4cyclictest20850irq/208-8000000.ethernet00:00:250
1911372993931,5cyclictest1914898-21grep19:25:280
1911372993931,4cyclictest1931418-21apt-get21:05:050
1911372993930,6cyclictest0-21swapper/020:20:250
1911372993929,7cyclictest1966841-21grep00:25:280
1911376993827,7cyclictest0-21swapper/200:35:272
1911376993826,8cyclictest1966039-21grep00:20:292
1911376993823,11cyclictest311ktimers/220:35:122
191137599386,26cyclictest1956829-21/usr/sbin/munin23:30:181
1911375993830,5cyclictest0-21swapper/123:40:271
1911375993828,7cyclictest0-21swapper/119:35:251
1911375993825,9cyclictest0-21swapper/120:55:261
1911372993830,5cyclictest1959186-21unixbench_singl23:40:280
1911372993827,8cyclictest0-21swapper/022:50:280
1911372993818,18cyclictest0-21swapper/022:35:280
1911376993731,3cyclictest1947508-21fschecks_time22:35:202
1911376993727,6cyclictest1-21systemd20:08:332
1911376993725,10cyclictest311ktimers/222:55:142
1911376993725,10cyclictest311ktimers/222:55:132
1911376993724,8cyclictest0-21swapper/220:45:272
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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