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2025-12-24 - 20:08

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack4slot1s.osadl.org (updated Wed Dec 24, 2025 12:44:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1279121310,3sleep10-21swapper/108:15:231
1279121310,3sleep10-21swapper/108:15:231
267682750,2sleep026770-21head07:25:250
267682750,2sleep026770-21head07:25:250
180882720,2chrt18086-21sort09:55:261
180882720,2chrt18086-21sort09:55:261
219972430,1sleep00-21swapper/008:40:150
219972430,1sleep00-21swapper/008:40:150
219972430,1sleep00-21swapper/008:40:150
21236994033,5cyclictest2672-21latency_hist09:15:111
21236994033,5cyclictest2672-21latency_hist09:15:111
21236994032,6cyclictest20041-21cat08:35:111
21236994032,6cyclictest20041-21cat08:35:111
21236993833,4cyclictest572-21cups-browsed07:25:331
21236993833,4cyclictest572-21cups-browsed07:25:331
21236993831,5cyclictest4558-21latency_hist09:20:121
21236993831,5cyclictest4558-21latency_hist09:20:121
229312360,1sleep10-21swapper/111:35:241
229312360,1sleep10-21swapper/111:35:241
229312360,1sleep10-21swapper/111:35:241
21236993531,3cyclictest21323-21gltestperf11:30:281
21236993531,3cyclictest21323-21gltestperf11:30:281
21236993530,3cyclictest17811-21latency11:20:271
21236993530,3cyclictest17811-21latency11:20:271
21236993530,3cyclictest17811-21latency11:20:271
21234993525,8cyclictest13892-21latency_hist09:45:120
21234993525,8cyclictest13892-21latency_hist09:45:120
21236993428,3cyclictest0-21swapper/110:20:111
21236993428,3cyclictest0-21swapper/110:20:111
48742330,1sleep14773-21/usr/sbin/munin09:20:251
48742330,1sleep14773-21/usr/sbin/munin09:20:251
73012320,2sleep17456-21grep08:00:251
278752320,2sleep127869-21tail10:20:301
278752320,2sleep127869-21tail10:20:301
21236993228,2cyclictest0-21swapper/112:05:321
21236993228,2cyclictest0-21swapper/112:05:321
21236993226,5cyclictest26387-21latency_hist11:45:121
21236993226,5cyclictest26387-21latency_hist11:45:121
21236993225,5cyclictest8604-21netstat10:55:301
21236993225,5cyclictest8604-21netstat10:55:301
21234993224,6cyclictest6955-21latency_hist08:00:120
21234993224,6cyclictest6955-21latency_hist08:00:120
17072320,2sleep11875-21grep07:45:251
17072320,2sleep11875-21grep07:45:251
21236993125,5cyclictest522-21sshd09:08:311
21236993125,5cyclictest522-21sshd09:08:311
21236993124,5cyclictest6940-21sshd12:18:321
21236993124,5cyclictest6940-21sshd12:18:321
21236993124,5cyclictest17621-21latency_hist09:55:121
21234993125,4cyclictest8505-21unixbench_multi12:20:350
21234993125,4cyclictest8505-21unixbench_multi12:20:350
21234993124,5cyclictest2071-21sendmail10:40:110
21234993124,5cyclictest2071-21sendmail10:40:110
21236993024,4cyclictest25642-21cron08:50:111
21236993024,4cyclictest25642-21cron08:50:111
21234993021,7cyclictest13789-21threads08:15:350
21234993021,7cyclictest13789-21threads08:15:350
21234993021,6cyclictest30127-21latency_hist07:35:170
21236992925,2cyclictest0-21swapper/109:00:121
21236992925,2cyclictest0-21swapper/109:00:121
21236992924,3cyclictest0-21swapper/110:35:321
21236992924,3cyclictest0-21swapper/110:35:321
21236992924,3cyclictest0-21swapper/107:50:271
21236992924,3cyclictest0-21swapper/107:50:271
21236992923,5cyclictest20769-21latency_hist11:30:121
21236992923,5cyclictest20769-21latency_hist11:30:121
21236992923,4cyclictest1346-21avahi-daemon09:45:311
21236992923,4cyclictest1346-21avahi-daemon09:45:311
21234992925,2cyclictest0-21swapper/011:00:120
21234992925,2cyclictest0-21swapper/011:00:120
21234992922,5cyclictest572-21cups-browsed12:10:340
21234992922,5cyclictest572-21cups-browsed12:10:340
21234992922,5cyclictest26749-21sshd10:17:310
21234992922,5cyclictest26749-21sshd10:17:310
21234992921,6cyclictest674-21gpm10:25:290
21234992921,6cyclictest674-21gpm10:25:290
21234992921,6cyclictest547-21rs:main0
21234992921,6cyclictest547-21rs:main0
21236992822,4cyclictest0-21swapper/109:40:341
21236992822,4cyclictest0-21swapper/109:40:341
21236992819,7cyclictest28289-21latency_hist11:50:141
21236992819,7cyclictest28289-21latency_hist11:50:141
21234992823,3cyclictest0-21swapper/012:40:110
21234992823,3cyclictest0-21swapper/012:40:110
21234992821,5cyclictest550-21cron08:45:200
21234992821,5cyclictest550-21cron08:45:200
21234992821,5cyclictest32704-21latency_hist10:35:170
21234992821,5cyclictest31779-21gltestperf09:05:240
21234992821,5cyclictest31779-21gltestperf09:05:240
21234992821,5cyclictest23649-21sshd08:43:310
21234992820,6cyclictest1909-21fschecks_time12:05:260
21234992820,6cyclictest1909-21fschecks_time12:05:260
21234992815,10cyclictest12926-21awk11:05:360
21234992815,10cyclictest12926-21awk11:05:360
21236992722,3cyclictest26769-21mailstats08:50:331
21236992722,3cyclictest26769-21mailstats08:50:331
21236992721,5cyclictest449-21netstat12:00:301
21236992721,5cyclictest11402-21kernelversion08:10:281
21234992722,3cyclictest0-21swapper/007:25:110
21234992721,5cyclictest6282-21rt-features12:15:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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