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2025-12-08 - 10:27

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 Mon Dec 08, 2025 00:44:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
182542750,3chrt0-21swapper/321:09:113
182542750,3chrt0-21swapper/321:09:113
123052740,2chrt0-21swapper/219:28:572
308442660,2sleep0171ktimers/023:09:120
308442660,2sleep0171ktimers/023:09:120
49292600,3chrt0-21swapper/320:34:063
49292600,3chrt0-21swapper/320:34:063
71802590,3sleep0171ktimers/020:39:140
71802590,3sleep0171ktimers/020:39:140
51072560,3chrt0-21swapper/220:34:092
51072560,3chrt0-21swapper/220:34:092
278032530,11sleep024579-21kworker/0:1+events_power_efficient21:34:130
275222530,1sleep30-21swapper/322:59:143
275222530,1sleep30-21swapper/322:59:143
184882510,3sleep30-21swapper/300:03:543
184882510,3sleep30-21swapper/300:03:543
261912500,3sleep30-21swapper/320:04:073
261912500,3sleep30-21swapper/320:04:073
81902490,5sleep1271rcuc/123:34:131
81902490,5sleep1271rcuc/123:34:131
305452480,3chrt0-21swapper/020:14:170
184282480,2sleep00-21swapper/000:03:510
184282480,2sleep00-21swapper/000:03:510
102232470,4sleep20-21swapper/222:14:062
6675994622,22cyclictest23524-21netstat22:49:100
6675994622,22cyclictest23524-21netstat22:49:100
254282460,3chrt0-21swapper/122:54:091
6675994515,28cyclictest20698-21fschecks_count00:09:040
6675994515,28cyclictest20698-21fschecks_count00:09:040
230152450,2sleep20-21swapper/200:14:062
230152450,2sleep20-21swapper/200:14:062
667599438,8cyclictest146-21systemd-journal19:33:060
667599438,8cyclictest146-21systemd-journal19:33:060
214462430,3sleep30-21swapper/322:44:063
214462430,3sleep30-21swapper/322:44:063
164272430,2sleep00-21swapper/021:04:100
6675994219,21cyclictest480-21sshd23:02:260
6675994219,21cyclictest480-21sshd23:02:260
156612420,2sleep00-21swapper/021:03:580
6675994134,5cyclictest23020-21wc21:23:500
6675994134,5cyclictest23020-21wc21:23:500
6675994114,3cyclictest0-21swapper/019:49:070
6675994114,3cyclictest0-21swapper/019:49:070
94242400,3sleep20-21swapper/222:13:502
94242400,3sleep20-21swapper/222:13:502
6675994013,4cyclictest0-21swapper/022:54:120
6675993916,21cyclictest0-21swapper/021:29:100
6675993916,21cyclictest0-21swapper/021:29:100
6675993914,6cyclictest22318-21sort19:54:080
6675993913,3cyclictest0-21swapper/019:24:040
6675993831,4cyclictest11872-21sed22:19:050
6675993831,4cyclictest11872-21sed22:19:050
667599381,12cyclictest6620-21ntp_states22:04:110
667599381,12cyclictest6620-21ntp_states22:04:110
667599381,12cyclictest23139-21ntp_states00:14:090
667599381,12cyclictest23139-21ntp_states00:14:090
158042380,2sleep10-21swapper/121:04:041
6675993714,6cyclictest6674-21cyclictest19:44:120
6675993714,6cyclictest6674-21cyclictest19:44:120
6675993714,2cyclictest0-21swapper/023:29:040
667599371,13cyclictest4726-21ntp_states21:59:100
667599371,13cyclictest4726-21ntp_states21:59:100
247892370,2chrt0-21swapper/119:59:151
148422370,2sleep114845-21sed23:53:591
6675993612,3cyclictest0-21swapper/020:54:050
6675993612,3cyclictest0-21swapper/020:54:050
667599361,14cyclictest11861-21ntp_states23:44:110
667599361,14cyclictest11861-21ntp_states23:44:110
191572360,3sleep20-21swapper/222:39:032
191572360,3sleep20-21swapper/222:39:032
272532350,9sleep1281ktimers/121:34:061
6675993426,6cyclictest2261-21cut21:54:040
6675993426,6cyclictest2261-21cut21:54:040
202812330,2sleep120408-21/usr/sbin/munin21:14:131
202812330,2sleep120408-21/usr/sbin/munin21:14:131
100152330,2sleep110018-21wc23:39:121
100152330,2sleep110018-21wc23:39:121
6676993227,4cyclictest352-21thd22:24:081
6676993227,4cyclictest352-21thd22:24:081
6676993227,3cyclictest2036-21cut23:19:041
6676993227,3cyclictest2036-21cut23:19:041
6676993226,4cyclictest17105-21latency_hist22:33:581
6676993226,4cyclictest17105-21latency_hist22:33:581
6676993225,5cyclictest6674-21cyclictest20:24:121
6675993223,7cyclictest3217-21netstat20:29:090
6675993223,7cyclictest3217-21netstat20:29:090
287502320,3sleep028751-21netstat00:29:110
287502320,3sleep028751-21netstat00:29:110
114022320,2sleep111417-21cat22:18:571
6677993118,10cyclictest32227-21chrt21:46:212
6675993123,6cyclictest31488-21sshd00:37:530
6675993123,6cyclictest31488-21sshd00:37:530
6675993122,6cyclictest16100-21/usr/sbin/munin19:39:100
6675993122,6cyclictest16100-21/usr/sbin/munin19:39:100
6675993117,11cyclictest8244-21irqstats22:09:070
6675993117,11cyclictest8244-21irqstats22:09:070
6677993019,7cyclictest16195-21chrt23:54:562
667699301,5cyclictest3457-21192.168.115.40-manager21:55:161
667699301,5cyclictest3457-21192.168.115.40-manager21:55:161
6675993023,5cyclictest2145-21sshd20:27:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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