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2026-06-11 - 21:13

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 Thu Jun 11, 2026 12:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
642221000,1chrt6416-21strings09:08:091
642221000,1chrt6416-21strings09:08:091
642221000,1chrt6416-21strings09:08:091
59882990,2chrt5984-21ps10:33:100
59882990,2chrt5984-21ps10:33:100
59882990,2chrt5984-21ps10:33:100
217922930,2sleep021793-21if_eth008:23:050
217922930,2sleep021793-21if_eth008:23:050
327032770,4sleep2351rcuc/210:18:092
327032770,4sleep2351rcuc/210:18:092
327032770,4sleep2351rcuc/210:18:092
236432760,3chrt23647-21if_eth008:28:040
236432760,3chrt23647-21if_eth008:28:040
113472710,4sleep10-21swapper/109:23:011
113472710,4sleep10-21swapper/109:23:011
283882690,2sleep128390-21ntpq11:33:091
283882690,2sleep128390-21ntpq11:33:091
163722660,2sleep00-21swapper/011:03:010
163722660,2sleep00-21swapper/011:03:010
163722660,2sleep00-21swapper/011:03:010
146752610,3chrt0-21swapper/212:23:072
146752610,3chrt0-21swapper/212:23:072
146752610,3chrt0-21swapper/212:23:072
261292600,2sleep20-21swapper/211:28:042
261292600,2sleep20-21swapper/211:28:042
261292600,2sleep20-21swapper/211:28:042
304832590,1sleep130495-21awk08:47:511
304832590,1sleep130495-21awk08:47:511
214422550,1sleep121469-21/usr/sbin/munin08:23:031
214422550,1sleep121469-21/usr/sbin/munin08:23:031
10212550,3sleep10-21swapper/107:28:041
10212550,3sleep10-21swapper/107:28:041
10212550,3sleep10-21swapper/107:28:041
167792500,7sleep016894-21cat12:28:130
167792500,7sleep016894-21cat12:28:130
245762490,2sleep024462-21/usr/sbin/munin09:58:020
245762490,2sleep024462-21/usr/sbin/munin09:58:020
23532480,3sleep20-21swapper/207:32:502
23532480,3sleep20-21swapper/207:32:502
23532480,3sleep20-21swapper/207:32:502
245562450,3chrt0-21swapper/311:23:063
245562450,3chrt0-21swapper/311:23:063
245562450,3chrt0-21swapper/311:23:063
105602420,3sleep00-21swapper/009:18:130
105602420,3sleep00-21swapper/009:18:130
27641994112,5cyclictest201rcuc/008:48:520
27641994112,5cyclictest201rcuc/008:48:520
201172410,3sleep30-21swapper/309:43:123
201172410,3sleep30-21swapper/309:43:123
201172410,3sleep30-21swapper/309:43:123
27641993832,4cyclictest201rcuc/009:51:070
27641993832,4cyclictest201rcuc/009:51:070
27641993830,4cyclictest201rcuc/007:40:200
27641993830,4cyclictest201rcuc/007:40:200
27641993815,4cyclictest201rcuc/011:41:410
27641993815,4cyclictest201rcuc/011:41:410
27641993731,4cyclictest201rcuc/011:51:410
27641993731,4cyclictest201rcuc/011:51:410
27641993731,4cyclictest201rcuc/011:51:410
27641993530,4cyclictest90-1pr/ttyS011:11:370
27641993530,4cyclictest90-1pr/ttyS011:11:370
27641993530,4cyclictest90-1pr/ttyS011:11:370
27643993426,6cyclictest572-21cups-browsed07:38:111
27643993426,6cyclictest572-21cups-browsed07:38:111
27643993426,6cyclictest14812-21gltestperf10:58:041
27643993426,6cyclictest14812-21gltestperf10:58:041
27643993426,6cyclictest14812-21gltestperf10:58:041
2764199346,16cyclictest16-21ksoftirqd/011:45:360
2764199346,16cyclictest16-21ksoftirqd/011:45:360
2764199346,16cyclictest16-21ksoftirqd/011:45:360
27641993427,5cyclictest10428-21cut12:13:040
27641993427,5cyclictest10428-21cut12:13:040
21792340,2sleep00-21swapper/010:23:090
21792340,2sleep00-21swapper/010:23:090
21792340,2sleep00-21swapper/010:23:090
180592340,2sleep118202-21awk12:33:041
180592340,2sleep118202-21awk12:33:041
180592340,2sleep118202-21awk12:33:041
27643993224,6cyclictest23377-21fschecks_count08:28:021
27643993224,6cyclictest23377-21fschecks_count08:28:021
27643993224,6cyclictest15516-21idleruntime09:33:021
27643993224,6cyclictest15516-21idleruntime09:33:021
2764199328,5cyclictest201rcuc/008:18:290
2764199328,5cyclictest201rcuc/008:18:290
27641993225,5cyclictest27640-21cyclictest12:08:120
27641993225,5cyclictest27640-21cyclictest12:08:120
27641993225,5cyclictest15335-21sshd12:23:500
27641993225,5cyclictest15335-21sshd12:23:500
27641993225,5cyclictest15335-21sshd12:23:500
27641993222,8cyclictest5024-21latency_hist11:58:030
27641993222,8cyclictest5024-21latency_hist11:58:030
27641993218,4cyclictest90-1pr/ttyS009:53:060
27641993218,4cyclictest90-1pr/ttyS009:53:060
27641993217,4cyclictest90-1pr/ttyS011:19:110
27641993217,4cyclictest90-1pr/ttyS011:19:110
27641993217,4cyclictest90-1pr/ttyS011:19:110
27641993210,5cyclictest171ktimers/008:06:200
27641993210,5cyclictest171ktimers/008:06:200
127572320,3chrt12751-21gzip12:18:070
127572320,3chrt12751-21gzip12:18:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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