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2025-12-06 - 07:28

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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 rack2slot7s.osadl.org (updated Sat Dec 06, 2025 00:39:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
115218299584,40cyclictest1289123-21ssh23:24:211
1152182995748,6cyclictest3499535-21cups-browsed20:40:011
1152182995748,6cyclictest1234850-21grep22:10:011
1152182995345,5cyclictest0-21swapper/123:40:011
115218199535,15cyclictest1191472-21ssh21:14:250
1152181995339,7cyclictest151ktimers/020:49:220
1152182995042,5cyclictest1329994-21idleruntime-cro00:20:011
1152182995039,7cyclictest422-21dbus-daemon19:30:011
1152181995042,6cyclictest422-21dbus-daemon22:40:010
1152181995038,7cyclictest12450irq/32-eth023:14:250
1152181995028,19cyclictest1194498-21ssh21:19:100
115218199502,14cyclictest1252611-21ntpq22:34:230
1152181994935,8cyclictest12450irq/32-eth021:49:240
1152181994930,11cyclictest12450irq/32-eth021:24:180
1152183994838,8cyclictest0-21swapper/222:40:012
1152181994839,6cyclictest1185193-21unin-run21:00:020
1152181994833,5cyclictest1315591-21munin-run00:00:010
115218199481,14cyclictest1267386-21ntpq22:54:230
1152183994738,6cyclictest1223213-21latency_hist21:55:022
1152181994735,8cyclictest3499535-21cups-browsed23:39:250
115218399465,28cyclictest956-21mta-sts-daemon20:29:262
1152181994638,5cyclictest422-21dbus-daemon19:15:020
1152181994630,13cyclictest422-21dbus-daemon19:40:010
115218399457,24cyclictest437-21mta-sts-daemon23:54:212
1152182994536,6cyclictest1182193-21latency_hist20:50:011
1152182994534,7cyclictest1292630-21needreboot23:29:211
1152181994525,7cyclictest0-21swapper/000:15:390
1152181994510,10cyclictest1325903-21sed00:14:310
115218199448,15cyclictest1332731-21ssh00:24:210
115218199441,12cyclictest1186137-21ntpq21:04:230
115218199440,11cyclictest1263638-21ssh22:49:190
115218299431,34cyclictest1311090-21ssh23:54:231
1152181994332,6cyclictest151ktimers/020:09:180
1152181994327,13cyclictest3499535-21cups-browsed22:40:310
1152181994322,16cyclictest12450irq/32-eth022:29:290
1152181994315,24cyclictest491-21gdbus22:57:020
1152181994315,24cyclictest491-21gdbus22:57:020
115218199431,11cyclictest1336166-21ssh00:29:260
1152182994233,6cyclictest1215060-21unixbench_multi21:44:291
1152182994233,6cyclictest1215060-21unixbench_multi21:44:291
1152182994232,7cyclictest421-21avahi-daemon21:29:281
1152181994217,22cyclictest12450irq/32-eth021:29:300
115218199421,14cyclictest1311161-21ps23:54:260
115218199421,11cyclictest1291976-21ssh23:29:100
115218199421,11cyclictest1237904-21ssh22:14:240
115218199421,11cyclictest1229868-21memory22:04:160
115218199421,10cyclictest1273802-21ssh23:04:000
1152183994134,4cyclictest1300843-21munin-plugin-st23:40:012
1152182994134,4cyclictest0-21swapper/123:44:191
1152182994133,5cyclictest1238062-21processes22:14:291
1152182994131,6cyclictest1156696-21systemd-run19:25:011
1152182994131,4cyclictest0-21swapper/100:34:321
1152182994123,5cyclictest171rcu_preempt20:34:221
115218199413,29cyclictest1278088-21ssh23:09:180
115218199412,7cyclictest1187570-21ntpq21:09:210
115218199412,7cyclictest1183149-21ntpq20:54:250
115218199412,6cyclictest1206698-21ntpq21:34:200
115218199411,10cyclictest1177137-21ntpq20:34:250
115218199411,10cyclictest1166585-21ntpq19:59:200
115218199410,16cyclictest1307240-21ntpq23:49:220
1152182994033,5cyclictest1152180-21cyclictest23:59:391
1152182994032,5cyclictest1167155-21munin-run20:00:001
115218199407,5cyclictest1165143-21ntpq19:54:230
115218199407,5cyclictest1165143-21ntpq19:54:230
115218199403,8cyclictest1342080-21ssh00:39:210
115218199403,10cyclictest1180136-21ntpq20:44:230
115218199403,10cyclictest1180136-21ntpq20:44:230
1152181994011,2cyclictest0-21swapper/020:24:180
115218199401,11cyclictest1168320-21/usr/sbin/munin20:04:290
115218199401,10cyclictest1239429-21ssh22:15:580
115218199401,10cyclictest1175545-21ntpq20:29:200
115218199401,10cyclictest1163822-21sensors_volt19:49:290
1152183993932,3cyclictest0-21swapper/223:09:182
1152183993930,5cyclictest1326420-21kworker/u8:0-xprtiod00:15:012
1152183993925,11cyclictest1330000-21idleruntime-cro00:20:012
1152182993932,4cyclictest0-21swapper/122:40:011
1152182993930,5cyclictest422-21dbus-daemon23:50:011
1152182993928,6cyclictest0-21swapper/121:49:221
115218199395,8cyclictest422-21dbus-daemon22:25:020
115218199392,13cyclictest1171071-21ntpq20:14:240
115218199392,10cyclictest1234078-21ssh22:09:260
115218199391,9cyclictest1212460-21ssh21:41:270
115218199391,9cyclictest1212460-21ssh21:41:270
115218199391,9cyclictest1208852-21ssh21:37:040
115218199391,9cyclictest1208852-21ssh21:37:040
115218199391,7cyclictest1288474-21tail23:24:110
115218199391,15cyclictest1159649-21awk19:34:310
115218199391,13cyclictest1318432-21ntpq00:04:220
115218199391,12cyclictest1157677-21ntpq19:29:240
115218199391,10cyclictest1301338-21ssh23:40:360
1152183993832,3cyclictest1-21systemd00:40:022
1152183993830,5cyclictest3499535-21cups-browsed22:51:542
1152183993830,5cyclictest1271935-21latency_hist23:00:012
1152183993830,5cyclictest1271935-21latency_hist23:00:012
1152183993830,5cyclictest1215438-21systemd-run21:45:012
1152183993830,5cyclictest1215438-21systemd-run21:45:012
1152183993829,6cyclictest491-21gdbus23:14:282
1152183993829,6cyclictest1249436-21timerandwakeup22:29:352
115218399382,32cyclictest1233899-21ssh22:09:192
115218399381,32cyclictest1303595-21ssh23:44:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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