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2025-12-06 - 19:53

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 Sat Dec 06, 2025 12:44:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1768821070,2sleep017690-21latency_hist08:23:490
1768821070,2sleep017690-21latency_hist08:23:490
2158621060,3sleep20-21swapper/211:24:042
2158621060,3sleep20-21swapper/211:24:042
213832780,3sleep20-21swapper/211:23:562
23953997549,16cyclictest55150irq/47-eth008:29:010
23953997549,16cyclictest55150irq/47-eth008:29:010
236082690,3sleep20-21swapper/211:29:192
236082690,3sleep20-21swapper/211:29:192
158772640,3sleep20-21swapper/211:09:042
158772640,3sleep20-21swapper/211:09:042
91922600,3sleep20-21swapper/207:59:102
91922600,3sleep20-21swapper/207:59:102
23962590,2sleep10-21swapper/111:59:041
23962590,2sleep10-21swapper/111:59:041
2395499562,43cyclictest17956-21taskset08:24:011
2395499562,43cyclictest17956-21taskset08:24:011
23953995619,14cyclictest171ktimers/011:14:010
23953995619,14cyclictest171ktimers/011:14:010
23954995449,3cyclictest0-21swapper/111:54:001
2395499512,8cyclictest181rcu_preempt11:24:011
2395499512,8cyclictest181rcu_preempt11:24:011
128872510,2sleep20-21swapper/212:24:102
128872510,2sleep20-21swapper/212:24:102
2395499492,7cyclictest181rcu_preempt08:39:001
23953994924,18cyclictest171ktimers/012:19:000
23953994924,18cyclictest171ktimers/012:19:000
23342490,1sleep00-21swapper/011:59:040
23342490,1sleep00-21swapper/011:59:040
23955994815,18cyclictest0-21swapper/211:44:022
23955994815,18cyclictest0-21swapper/211:44:022
2395499482,9cyclictest181rcu_preempt07:59:041
2395499482,9cyclictest181rcu_preempt07:59:041
34692470,3sleep20-21swapper/207:44:072
34692470,3sleep20-21swapper/207:44:072
23954994737,5cyclictest0-21swapper/109:58:581
23954994737,5cyclictest0-21swapper/109:58:581
23954994535,6cyclictest0-21swapper/111:19:021
2395399457,25cyclictest55150irq/47-eth007:29:020
2395399457,25cyclictest55150irq/47-eth007:29:020
23953994525,15cyclictest171ktimers/007:54:020
23953994425,13cyclictest171ktimers/009:34:060
23953994425,13cyclictest171ktimers/009:34:060
14332430,2sleep10-21swapper/107:39:091
70422420,3sleep30-21swapper/312:09:153
70422420,3sleep30-21swapper/312:09:153
313632420,3chrt0-21swapper/211:49:082
313632420,3chrt0-21swapper/211:49:082
320802410,3sleep123952-21cyclictest08:59:111
23953994131,5cyclictest0-21swapper/011:04:020
23953994131,5cyclictest0-21swapper/011:04:020
12402400,2sleep20-21swapper/210:29:092
12402400,2sleep20-21swapper/210:29:092
103822400,2sleep20-21swapper/209:29:042
23954993929,8cyclictest30904-21sendmail10:23:491
23954993929,8cyclictest30904-21sendmail10:23:491
183042390,3chrt0-21swapper/112:38:561
23954993731,4cyclictest23952-21cyclictest12:09:151
23954993731,4cyclictest23952-21cyclictest12:09:151
2395499371,5cyclictest181rcu_preempt10:44:041
23953993725,8cyclictest0-21swapper/010:49:000
23953993725,8cyclictest0-21swapper/010:49:000
227182370,2sleep10-21swapper/109:59:141
227182370,2sleep10-21swapper/109:59:141
290142350,2sleep029022-21apt08:53:480
290142350,2sleep029022-21apt08:53:480
23954993527,6cyclictest5371-21threads10:39:151
23954993527,6cyclictest5371-21threads10:39:151
23954993525,8cyclictest15688-21sendmail09:43:501
23954993525,8cyclictest15688-21sendmail09:43:501
23953993529,5cyclictest12404-21kernelversion10:59:100
23953993520,11cyclictest0-21swapper/010:04:010
23953993520,11cyclictest0-21swapper/010:04:010
155122350,6sleep1281ktimers/112:30:161
241722340,2sleep124152-21latency10:04:071
241722340,2sleep124152-21latency10:04:071
2395499343,24cyclictest17629-21chrt11:13:581
2395499343,24cyclictest17629-21chrt11:13:581
23953993326,5cyclictest1194-21fschecks_time07:39:060
23953993325,6cyclictest4264-21fschecks_count12:04:060
23953993325,6cyclictest4264-21fschecks_count12:04:060
23953993325,6cyclictest31763-21fschecks_time07:34:050
23953993325,6cyclictest31763-21fschecks_time07:34:050
23953993324,7cyclictest22701-21threads09:59:130
23953993324,7cyclictest22701-21threads09:59:130
23953993323,8cyclictest0-21swapper/008:44:010
23953993323,8cyclictest0-21swapper/008:44:010
23955993211,16cyclictest64962sleep209:19:032
23955993211,16cyclictest64962sleep209:19:032
2395499323,7cyclictest181rcu_preempt12:14:011
23954993226,5cyclictest23952-21cyclictest08:29:051
23954993226,5cyclictest23952-21cyclictest08:29:051
23954993223,7cyclictest3718-21threads09:09:151
23954993223,7cyclictest3718-21threads09:09:151
2395499321,21cyclictest290132sleep111:44:021
2395499321,21cyclictest290132sleep111:44:021
23953993221,10cyclictest480-21sshd12:14:310
167892320,3sleep20-21swapper/208:19:122
167892320,3sleep20-21swapper/208:19:122
23954993124,5cyclictest8884-21kernelversion09:24:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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