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2025-12-18 - 21:26

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 Thu Dec 18, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26184639910129,66cyclictest2646019-21cat09:50:010
261846499951,90cyclictest0-21swapper/108:50:011
261846499913,58cyclictest0-21swapper/108:00:011
261846399759,38cyclictest0-21swapper/009:05:010
261846399713,43cyclictest2655134-21grep10:40:290
261846499691,55cyclictest0-21swapper/111:35:131
261846499691,55cyclictest0-21swapper/110:45:121
2618463996841,4cyclictest167350irq/118-8000000.ethernet-tx011:55:210
261846499641,51cyclictest0-21swapper/112:20:171
261846499641,51cyclictest0-21swapper/108:40:131
261846499621,49cyclictest0-21swapper/110:50:131
261846499621,47cyclictest0-21swapper/107:25:151
261846499611,48cyclictest0-21swapper/109:30:131
261846499611,48cyclictest0-21swapper/107:10:081
261846499611,48cyclictest0-21swapper/107:10:081
261846499611,46cyclictest0-21swapper/111:05:161
2618463996117,31cyclictest2653536-21latency_hist10:35:000
261846499601,54cyclictest0-21swapper/108:00:121
261846499601,51cyclictest2653115-21/usr/sbin/munin10:30:231
261846499601,47cyclictest0-21swapper/109:05:121
261846499601,47cyclictest0-21swapper/107:35:151
261846399602,53cyclictest0-21swapper/007:45:130
2618466995949,5cyclictest0-21swapper/211:00:002
261846499591,43cyclictest0-21swapper/109:15:131
261846499582,48cyclictest2619995-21/usr/sbin/munin07:15:201
261846499582,47cyclictest2640990-21apt-get09:20:141
261846499581,45cyclictest0-21swapper/110:00:141
261846499581,43cyclictest0-21swapper/109:40:111
2618464995814,37cyclictest167450irq/126-8000000.ethernet-tx109:25:111
2618464995737,17cyclictest2657762-21munin-plugin-st11:00:001
2618464995716,33cyclictest0-21swapper/109:50:271
261846499571,49cyclictest2650424-21/usr/sbin/munin10:15:161
261846499571,48cyclictest2658331-21/usr/sbin/munin11:00:271
261846499571,48cyclictest2649777-21/usr/sbin/munin10:10:241
261846499571,48cyclictest2649777-21/usr/sbin/munin10:10:241
261846499571,47cyclictest2669883-21apt-get12:10:171
261846499571,40cyclictest0-21swapper/108:25:151
2618463995750,5cyclictest0-21swapper/008:15:180
2618464995630,19cyclictest0-21swapper/109:40:001
2618464995630,19cyclictest0-21swapper/109:40:001
2618464995629,21cyclictest0-21swapper/111:10:291
261846499562,48cyclictest2667343-21/usr/sbin/munin11:55:191
261846499562,47cyclictest2673439-21/usr/sbin/munin12:30:291
261846499562,47cyclictest2663038-21apt-get11:30:171
261846499562,47cyclictest2663038-21apt-get11:30:171
261846499562,47cyclictest2654039-21meminfo10:35:241
261846499562,46cyclictest2625990-21/usr/sbin/munin07:50:231
2618464995616,35cyclictest0-21swapper/107:45:231
261846499561,48cyclictest2630847-21apt-get08:20:101
261846499561,47cyclictest2629470-21/usr/sbin/munin08:10:261
261846499561,46cyclictest2654598-21apt-get10:40:151
261846499552,45cyclictest2645210-21apt-get09:45:121
261846499552,41cyclictest0-21swapper/108:05:131
261846499551,48cyclictest2668819-21sshd12:01:101
261846499551,47cyclictest2670802-21/usr/sbin/munin12:15:191
261846499551,47cyclictest2639369-21/usr/sbin/munin09:10:201
261846499551,47cyclictest2622640-21/usr/sbin/munin07:30:271
261846499551,46cyclictest2666644-21/usr/sbin/munin11:50:231
261846499551,46cyclictest2665346-21/usr/sbin/munin11:40:341
261846499551,46cyclictest2652167-21/usr/sbin/munin10:25:211
261846499541,46cyclictest2662328-21/usr/sbin/munin11:25:211
261846499541,46cyclictest2624605-21/usr/sbin/munin07:40:291
261846499541,45cyclictest2669044-21apt-get12:05:151
261846499541,45cyclictest2669044-21apt-get12:05:151
261846499541,45cyclictest2660497-21apt-get11:15:151
261846499541,45cyclictest2647236-21/usr/sbin/munin09:55:221
261846399543,48cyclictest0-21swapper/010:20:200
261846699536,21cyclictest2672388-21gpg-connect-age12:25:012
2618466995340,6cyclictest0-21swapper/211:35:292
261846699533,25cyclictest0-21swapper/211:15:012
261846499531,45cyclictest2672851-21/usr/sbin/munin12:25:261
261846499531,45cyclictest2649183-21/usr/sbin/munin10:05:261
261846499531,45cyclictest2632820-21/usr/sbin/munin08:30:231
261846499531,45cyclictest2632820-21/usr/sbin/munin08:30:231
261846499531,44cyclictest2665837-21/usr/sbin/munin11:45:231
261846499531,44cyclictest2635136-21/usr/sbin/munin08:45:171
2618466995243,5cyclictest2620407-21sendmail07:20:002
261846499522,43cyclictest2621054-21/usr/sbin/munin07:20:261
261846499521,44cyclictest2661436-21/usr/sbin/munin11:20:191
261846499521,42cyclictest2637609-21apt-get09:00:151
261846499512,41cyclictest2674491-21/usr/sbin/munin12:35:201
261846499511,44cyclictest2629982-21/usr/sbin/munin08:15:221
261846499511,43cyclictest2651220-21apt-get10:20:151
261846499511,43cyclictest2636951-21/usr/sbin/munin08:55:211
261846499511,43cyclictest2633439-21/usr/sbin/munin08:35:201
261846399515,12cyclictest20850irq/208-8000000.ethernet11:25:000
2618463994943,4cyclictest0-21swapper/012:10:150
2618463994941,4cyclictest167350irq/118-8000000.ethernet-tx007:25:180
2618463994940,5cyclictest167350irq/118-8000000.ethernet-tx010:15:150
261846399492,44cyclictest2648284-21wc10:00:270
261846399491,44cyclictest2628758-21find08:05:260
2618466994837,6cyclictest2609045-21kworker/u8:1+events_power_efficient08:00:012
2618466994816,26cyclictest0-21swapper/211:30:292
2618466994816,26cyclictest0-21swapper/211:30:292
2618463994841,4cyclictest0-21swapper/010:55:100
2618463994840,4cyclictest167350irq/118-8000000.ethernet-tx011:05:010
261846699471,37cyclictest0-21swapper/209:10:292
2618463994738,6cyclictest2647620-21munin-plugin-st10:00:000
261846699456,4cyclictest0-21swapper/212:05:012
2618466994537,4cyclictest2669683-21munin-plugin-st12:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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