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2025-03-18 - 05:13

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 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 Tue Mar 18, 2025 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
95267499629,18cyclictest988509-21/usr/sbin/munin23:10:151
95267499629,18cyclictest988509-21/usr/sbin/munin23:10:141
95267499561,25cyclictest0-21swapper/119:25:011
95267499561,25cyclictest0-21swapper/119:25:011
952671995649,4cyclictest0-21swapper/020:15:190
952676995546,5cyclictest987231-21sendmail22:59:592
952676995546,5cyclictest987231-21sendmail22:59:592
952671995116,32cyclictest965967-21apt-config20:30:010
952676995037,9cyclictest0-21swapper/221:45:002
952671995041,4cyclictest0-21swapper/023:15:110
952671995040,6cyclictest954612-21munin-plugin-st19:20:000
952671995024,5cyclictest0-21swapper/021:40:000
952676994839,6cyclictest994683-21munin-plugin-st23:55:012
952676994839,6cyclictest994683-21munin-plugin-st23:55:012
952676994834,11cyclictest311ktimers/200:30:102
952674994839,6cyclictest972237-21munin-plugin-st21:10:001
952674994839,5cyclictest992764-21sendmail23:40:001
952674994834,9cyclictest0-21swapper/119:15:021
952674994832,10cyclictest0-21swapper/100:20:291
952676994737,6cyclictest981289-21grep22:10:232
952676994731,11cyclictest0-21swapper/220:15:222
952674994733,9cyclictest0-21swapper/121:30:001
952674994635,7cyclictest0-21swapper/122:15:281
95267499461,8cyclictest0-21swapper/123:25:011
952676994537,4cyclictest0-21swapper/221:00:012
952676994528,14cyclictest311ktimers/220:45:132
952676994527,13cyclictest311ktimers/222:15:152
952674994537,4cyclictest974781-21munin-plugin-st21:25:011
952671994537,4cyclictest953626-21fschecks_time19:15:020
952671994537,4cyclictest20750irq/251-8000000.ethernet19:20:150
952671994537,4cyclictest20750irq/251-8000000.ethernet19:20:150
952671994534,6cyclictest20950irq/209-8000000.ethernet22:00:220
952671994526,9cyclictest0-21swapper/000:20:200
952671994513,26cyclictest963280-21latency_hist20:15:010
952676994431,10cyclictest311ktimers/219:15:152
952671994438,3cyclictest0-21swapper/022:00:010
95267699436,23cyclictest30-21rcuc/223:50:012
952674994328,10cyclictest0-21swapper/121:10:171
95267499431,24cyclictest0-21swapper/122:15:001
952671994331,9cyclictest0-21swapper/023:00:000
952671994331,9cyclictest0-21swapper/023:00:000
952676994234,5cyclictest997527-21cron00:15:002
952676994226,12cyclictest311ktimers/223:35:132
952676994226,11cyclictest311ktimers/220:30:162
952676994222,16cyclictest311ktimers/221:35:122
952671994231,6cyclictest983933-21ptp4l-jitter22:30:220
952671994228,10cyclictest0-21swapper/020:35:000
95267199421,39cyclictest0-21swapper/023:40:120
952676994131,7cyclictest965020-21unixbench_singl20:20:282
952676994131,5cyclictest995521-21latency_hist00:00:002
952676994131,5cyclictest0-21swapper/220:00:282
952676994126,12cyclictest311ktimers/221:15:122
952676994115,16cyclictest311ktimers/222:00:122
952674994133,4cyclictest0-21swapper/120:55:011
952674994132,5cyclictest991798-21grep23:30:241
952671994128,8cyclictest0-21swapper/021:40:270
952676994030,7cyclictest979407-21grep21:55:312
952676994027,9cyclictest0-21swapper/222:30:022
952674994031,5cyclictest0-21swapper/121:55:301
952674994021,12cyclictest0-21swapper/119:40:011
95267199406,31cyclictest14-21rcu_preempt22:40:150
952671994032,4cyclictest20950irq/209-8000000.ethernet22:55:020
952671994030,6cyclictest0-21swapper/020:50:290
95267199401,4cyclictest961228-21irqstats20:00:240
95267199401,3cyclictest971674-21meminfo21:00:290
95267199401,28cyclictest0-21swapper/022:28:040
952671994012,25cyclictest15-21rcuc/020:55:300
952676993931,5cyclictest0-21swapper/200:15:302
952676993930,6cyclictest953442-21grep19:10:292
952676993929,6cyclictest991878-21grep23:30:242
952676993929,6cyclictest0-21swapper/220:35:292
952676993929,6cyclictest0-21swapper/220:35:292
952676993927,9cyclictest311ktimers/222:50:092
952674993927,9cyclictest0-21swapper/121:00:341
952674993915,17cyclictest168350irq/127-8000000.ethernet-tx123:40:111
952671993930,4cyclictest0-21swapper/000:15:010
952671993929,7cyclictest992674-21grep23:35:300
952671993929,7cyclictest0-21swapper/020:05:300
95267199391,27cyclictest0-21swapper/022:46:270
952676993828,6cyclictest999278-21grep00:20:302
952676993827,7cyclictest996282-21grep00:00:302
952676993827,7cyclictest996282-21grep00:00:292
952676993825,9cyclictest311ktimers/221:10:102
952676993824,7cyclictest0-21swapper/221:50:302
952676993824,11cyclictest311ktimers/223:15:132
952676993822,12cyclictest311ktimers/219:30:182
95267699381,10cyclictest0-21swapper/221:25:012
952674993827,8cyclictest0-21swapper/120:15:301
952674993826,8cyclictest0-21swapper/119:45:001
952674993824,7cyclictest0-21swapper/121:50:301
95267199384,10cyclictest999638-21apt-config00:30:000
95267199384,10cyclictest999638-21apt-config00:30:000
952671993831,4cyclictest20750irq/251-8000000.ethernet22:20:180
952671993827,4cyclictest20750irq/251-8000000.ethernet19:40:150
95267199381,35cyclictest0-21swapper/021:20:010
95267199381,2cyclictest0-21swapper/023:30:020
95267199381,26cyclictest0-21swapper/022:14:290
95267199381,26cyclictest0-21swapper/021:22:360
95267199381,26cyclictest0-21swapper/019:53:570
95267199381,25cyclictest0-21swapper/020:21:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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