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2026-03-10 - 23:31

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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 rackbslot5s.osadl.org (updated Tue Mar 10, 2026 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1166194995443,7cyclictest1212718-21grep09:20:252
1166194995243,6cyclictest1194383-21grep08:30:152
1166194994637,6cyclictest1202730-21awk08:55:002
1166190994521,20cyclictest0-21swapper/107:13:441
1166186994538,4cyclictest1211472-21munin-run09:20:010
1166194994435,4cyclictest0-21swapper/208:20:142
1166190994336,4cyclictest1257937-21sh11:35:001
1166197994234,5cyclictest1266451-21cron12:00:013
1166190994232,7cyclictest1218277-21cron09:40:001
1166190994230,8cyclictest231ktimers/111:20:141
116619099421,8cyclictest1248718-21/usr/sbin/munin11:05:241
1166197994130,8cyclictest391ktimers/311:10:113
1166194994133,6cyclictest311ktimers/212:00:112
1166194994130,7cyclictest1188450-21grep08:10:252
1166194994130,6cyclictest0-21swapper/212:25:252
1166194994129,8cyclictest1237254-21sh10:35:002
116619099411,7cyclictest1275558-21modprobe12:25:161
1166197994030,7cyclictest1271140-21grep12:10:253
1166194994029,7cyclictest1190171-21grep08:15:252
116619099408,29cyclictest0-21swapper/109:15:241
116619099401,7cyclictest1236915-21cron10:31:001
116619099401,6cyclictest1199061-21cron08:42:001
1166190994015,21cyclictest0-21swapper/108:10:221
1166197993929,6cyclictest1181608-21unixbench_multi07:50:243
1166194993932,3cyclictest0-21swapper/209:20:012
1166194993928,7cyclictest1214471-21grep09:25:272
1166194993928,6cyclictest1233384-21grep10:20:232
116619099397,29cyclictest1182543-21basename07:55:171
116619099393,4cyclictest1261709-21diskstats11:45:161
1166190993931,4cyclictest0-21swapper/109:05:151
116619099391,8cyclictest1247020-21tail11:00:251
116619099391,6cyclictest1222180-21/usr/sbin/munin09:50:161
116619099391,6cyclictest1173355-21cron07:28:001
116619099391,5cyclictest1243734-21cron10:51:001
116619099391,5cyclictest1179229-21sshd07:45:191
116619099391,5cyclictest1179229-21sshd07:45:191
1166186993929,6cyclictest1276258-21grep12:25:250
1166197993830,5cyclictest1190583-21munin-run08:20:013
1166197993829,6cyclictest1223823-21fschecks_time09:55:153
1166197993828,6cyclictest1182449-21fschecks_count07:55:163
1166197993828,5cyclictest0-21swapper/309:25:163
1166197993827,8cyclictest1216577-21cron09:35:003
1166197993825,10cyclictest391ktimers/307:30:133
1166194993832,3cyclictest1197615-21sendmail08:40:012
1166194993829,7cyclictest1211123-21kworker/u8:2+events_unbound09:45:102
1166194993828,6cyclictest0-21swapper/209:40:002
116619099383,6cyclictest1273649-21diskstats12:20:141
116619099382,4cyclictest1260735-21/usr/sbin/munin11:40:241
116619099381,9cyclictest1177182-21/usr/sbin/munin07:40:251
116619099381,9cyclictest1177182-21/usr/sbin/munin07:40:251
116619099381,8cyclictest1277985-21head12:30:251
116619099381,8cyclictest1195820-21wc08:35:011
116619099381,6cyclictest1244433-21/usr/sbin/munin10:55:161
116619099381,6cyclictest1227505-21meminfo10:05:191
116619099381,6cyclictest1168756-21/usr/sbin/munin07:15:171
116619099381,5cyclictest1170419-21/usr/sbin/munin07:20:131
1166190993815,20cyclictest1212285-21ntp_states09:20:211
116619099381,4cyclictest1213963-21/usr/sbin/munin09:25:221
116619099381,4cyclictest1196400-21/usr/sbin/munin08:35:181
116619099381,11cyclictest1263857-21ntp_states11:50:211
1166186993830,4cyclictest0-21swapper/008:20:010
1166186993830,4cyclictest0-21swapper/008:00:000
1166194993728,6cyclictest1231718-21unixbench_singl10:15:232
116619099376,27cyclictest0-21swapper/108:25:251
116619099373,3cyclictest1251949-21/usr/sbin/munin11:15:221
116619099371,9cyclictest1267332-21ps12:00:211
116619099371,9cyclictest1240996-21/usr/sbin/munin10:45:151
116619099371,9cyclictest1237594-21df10:35:131
116619099371,9cyclictest1203954-21grep08:55:261
116619099371,9cyclictest1201025-21apt08:50:001
116619099371,8cyclictest1270285-21grep12:10:151
116619099371,8cyclictest1184118-21/usr/sbin/munin08:00:141
116619099371,7cyclictest1189221-21/usr/sbin/munin08:15:151
1166190993717,16cyclictest438-21cron08:25:011
116619099371,6cyclictest1272073-21/usr/sbin/munin12:15:181
116619099371,6cyclictest1255297-21tr11:25:201
116619099371,5cyclictest1279091-21meminfo12:35:181
116619099371,5cyclictest1258618-21meminfo11:35:201
116619099371,5cyclictest1228522-21apt-get10:10:051
116619099371,5cyclictest1221364-21cron09:46:001
116619099371,5cyclictest1219264-21/usr/sbin/munin09:40:241
116619099371,4cyclictest1232383-21/usr/sbin/munin10:20:241
116619099371,4cyclictest1216324-21cron09:32:001
116619099371,4cyclictest1175740-21/usr/sbin/munin07:35:181
116619099371,4cyclictest1174971-21cron07:32:001
116619099371,11cyclictest1201946-21fgrep08:50:231
116619099371,10cyclictest1180921-21irqstats07:50:171
1166186993725,7cyclictest1229953-21grep10:10:260
1166186993725,7cyclictest1204026-21grep08:55:260
1166197993626,6cyclictest0-21swapper/307:45:003
1166197993626,6cyclictest0-21swapper/307:45:003
1166194993626,7cyclictest438-21cron11:10:012
1166194993625,6cyclictest0-21swapper/211:25:252
116619099363,6cyclictest1208399-21df09:10:131
116619099361,9cyclictest1234575-21wc10:25:201
116619099361,9cyclictest1223747-21df_inode09:55:131
116619099361,7cyclictest1186242-21ntp_kernel_pll_08:05:211
116619099361,6cyclictest1265934-21grep11:55:231
116619099361,6cyclictest1250636-21grep11:10:241
116619099361,4cyclictest1231744-21users10:15:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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