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2026-09-24 - 03:05

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 Sep 24, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
241192630,2chrt24120-21sshd00:10:310
241192630,2chrt24120-21sshd00:10:310
193142590,2chrt19313-21sed21:04:460
193142590,2chrt19313-21sed21:04:460
295332570,3sleep20-21swapper/200:24:482
295332570,3sleep20-21swapper/200:24:482
189512570,2sleep20-21swapper/221:04:402
189512570,2sleep20-21swapper/221:04:402
8382530,3chrt0-21swapper/221:44:362
8382530,3chrt0-21swapper/221:44:362
8382530,3chrt0-21swapper/221:44:362
175392510,3sleep20-21swapper/219:34:432
175392510,3sleep20-21swapper/219:34:432
14632490,2chrt1460-21latency_hist00:39:301
14632490,2chrt1460-21latency_hist00:39:301
291892460,3sleep20-21swapper/222:59:372
291892460,3sleep20-21swapper/222:59:372
291892460,3sleep20-21swapper/222:59:372
313402450,1sleep00-21swapper/021:39:310
284132440,1sleep2351rcuc/221:29:442
284132440,1sleep2351rcuc/221:29:442
10023994438,4cyclictest30619-21systemctl23:04:260
10023994438,4cyclictest30619-21systemctl23:04:260
10023994438,4cyclictest30619-21systemctl23:04:260
7472410,2sleep10-21swapper/123:09:421
7472410,2sleep10-21swapper/123:09:421
72232410,3sleep20-21swapper/220:34:412
303812410,4chrt0-21swapper/200:29:382
303812410,4chrt0-21swapper/200:29:382
277732400,3sleep20-21swapper/222:54:472
277732400,3sleep20-21swapper/222:54:472
247592400,3sleep20-21swapper/200:14:362
10023994032,6cyclictest15301-21netstat20:54:450
10023994032,6cyclictest15301-21netstat20:54:450
10023993933,4cyclictest21089-21tail19:44:400
309892370,1sleep030128-21/usr/sbin/munin20:09:510
309892370,1sleep030128-21/usr/sbin/munin20:09:510
10024993729,6cyclictest729-21dbus-daemon21:24:261
10024993729,6cyclictest729-21dbus-daemon21:24:261
230912360,3sleep20-21swapper/200:09:402
230912360,3sleep20-21swapper/200:09:402
10023993629,5cyclictest23135-21latency_hist22:44:260
10023993629,5cyclictest23135-21latency_hist22:44:260
10023993629,5cyclictest23135-21latency_hist22:44:260
197072330,4chrt0-21swapper/223:59:432
197072330,4chrt0-21swapper/223:59:432
197072330,4chrt0-21swapper/223:59:432
10023993328,3cyclictest16819-21cron19:34:260
143652321,26sleep014475-21/usr/sbin/munin23:44:510
143652321,26sleep014475-21/usr/sbin/munin23:44:510
10023993226,4cyclictest0-21swapper/023:14:250
10023993226,4cyclictest0-21swapper/023:14:250
10023993225,5cyclictest19405-21gltestperf23:59:400
10023993225,5cyclictest19405-21gltestperf23:59:400
10023993225,5cyclictest19405-21gltestperf23:59:400
10023993223,6cyclictest0-21swapper/023:19:450
10023993223,6cyclictest0-21swapper/023:19:450
266042310,1sleep0674-21gpm22:50:560
10023993124,5cyclictest9702-21sshd22:05:080
10023993124,5cyclictest2799-21sshd20:21:080
10023993124,5cyclictest1266-21sshd00:38:360
10023993124,5cyclictest1266-21sshd00:38:360
10023993124,5cyclictest0-21swapper/021:19:380
10023993124,5cyclictest0-21swapper/021:19:380
227382300,3sleep20-21swapper/200:09:322
1002899303,21cyclictest20801-21chrt00:04:303
1002899303,21cyclictest20801-21chrt00:04:303
1002899303,21cyclictest20801-21chrt00:04:303
10024993012,3cyclictest0-21swapper/100:42:531
10024993012,3cyclictest0-21swapper/100:42:531
10023993025,3cyclictest0-21swapper/022:28:040
10023993024,4cyclictest0-21swapper/020:29:390
10023993023,5cyclictest18257-21latency_hist21:04:300
10023993023,5cyclictest18257-21latency_hist21:04:300
10023993015,3cyclictest0-21swapper/000:05:080
21712290,3sleep20-21swapper/220:19:452
10024992922,5cyclictest11074-21processes22:09:461
10024992922,5cyclictest11074-21processes22:09:461
10024992921,6cyclictest9852-21fschecks_count23:34:381
10023992924,3cyclictest10013-21cyclictest22:29:380
10023992924,3cyclictest10013-21cyclictest22:29:380
10023992923,4cyclictest28631-21cut20:04:400
10023992923,4cyclictest28631-21cut20:04:400
10023992922,5cyclictest0-21swapper/020:44:470
208832280,2sleep10-21swapper/121:09:451
208832280,2sleep10-21swapper/121:09:451
10024992824,3cyclictest10013-21cyclictest21:59:481
10024992824,3cyclictest10013-21cyclictest21:59:481
10024992824,2cyclictest0-21swapper/119:59:461
10024992824,2cyclictest0-21swapper/119:59:461
10024992822,5cyclictest14678-21systemd-journal23:19:081
10024992822,5cyclictest14678-21systemd-journal23:19:081
10024992821,5cyclictest10135-21latency_hist22:09:301
10024992820,6cyclictest26719-21fschecks_time00:19:381
10024992820,6cyclictest26719-21fschecks_time00:19:381
10024992819,7cyclictest13852-21latency_hist22:19:271
10024992819,7cyclictest13852-21latency_hist22:19:271
10023992824,3cyclictest31760-21sed21:39:390
10023992824,3cyclictest31760-21sed21:39:390
10023992824,3cyclictest31760-21sed21:39:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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