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2025-12-01 - 08:03
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rackfslot7.osadl.org (updated Mon Dec 01, 2025 00:46:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1206347999253,38cyclictest1239391-21run-parts20:05:213
120634799899,59cyclictest1311926-21awk22:15:153
1206347997314,40cyclictest1340035-21apt-get23:05:143
1206347997314,39cyclictest1336640-21taskset22:58:463
1206347997213,39cyclictest1352767-21/usr/sbin/munin23:25:193
1206347997212,59cyclictest1331039-21taskset22:48:493
1206347997132,39cyclictest1247096-21if_eno320:20:173
1206347997113,39cyclictest876-21mta-sts-daemon19:57:023
1206347996829,19cyclictest1245280-21timerwakeupswit20:15:243
1206347996829,19cyclictest1245280-21timerwakeupswit20:15:233
1206347996527,19cyclictest1364012-21ntpq23:45:193
120634799633,59cyclictest1261440-21memory20:45:193
1206347996323,39cyclictest1226665-21/usr/sbin/munin19:45:123
120634799630,60cyclictest1385487-21taskset00:27:563
120634799630,60cyclictest1385487-21taskset00:27:553
120634799602,39cyclictest1231107-21timerandwakeup19:50:253
1206347995919,19cyclictest1337738-21fschecks_count23:00:153
1206347995820,38cyclictest0-21swapper/323:30:463
120634799580,39cyclictest1302101-21/usr/sbin/munin21:55:263
1206347995735,19cyclictest12682252sleep320:59:273
1206347995719,19cyclictest1258027-21diskstats20:40:153
1206347995635,19cyclictest1206343-21cyclictest22:54:273
1206347995616,39cyclictest1345991-21telnet23:15:133
1206347995516,20cyclictest1305884-21systemd-run22:05:013
120634799550,15cyclictest0-21swapper/300:05:593
1206347995415,39cyclictest1297608-21kworker/u32:1+flush-8:022:08:303
1206347995413,21cyclictest1274186-21cut21:10:013
120634799540,15cyclictest0-21swapper/320:01:253
1206347995314,39cyclictest1383221-21unin-run00:25:013
1206344995335,18cyclictest0-21swapper/023:10:170
1206347995214,19cyclictest1276649-21sshd21:14:243
1206347995214,19cyclictest0-21swapper/321:00:383
1206347995213,39cyclictest0-21swapper/321:27:053
1206347995213,20cyclictest1279459-21seq21:19:253
1206347995213,20cyclictest1088-21runrttasks00:18:003
1206347995213,20cyclictest1088-21runrttasks00:17:593
1206347995212,39cyclictest0-21swapper/300:38:103
1206346995212,39cyclictest0-21swapper/223:00:172
120634799519,40cyclictest0-21swapper/323:55:193
1206347995133,18cyclictest0-21swapper/323:38:213
1206347995132,19cyclictest874-21mta-sts-daemon21:41:033
1206347995113,19cyclictest1344186-21sh23:10:213
1206347995112,39cyclictest0-21swapper/320:29:323
1206347995110,40cyclictest0-21swapper/320:37:443
1206344995113,19cyclictest0-21swapper/020:25:180
1206348995012,19cyclictest0-21swapper/421:45:174
1206347995031,19cyclictest0-21swapper/322:30:013
1206347995031,18cyclictest0-21swapper/319:45:013
1206347995029,19cyclictest0-21swapper/322:11:373
1206347995011,39cyclictest0-21swapper/319:38:543
1206347995011,39cyclictest0-21swapper/319:24:423
1206347995011,39cyclictest0-21swapper/319:18:093
1206347995011,39cyclictest0-21swapper/300:02:383
1206344995011,39cyclictest0-21swapper/000:10:130
1206344995011,39cyclictest0-21swapper/000:10:120
1206350994910,39cyclictest0-21swapper/623:40:176
1206348994912,18cyclictest0-21swapper/422:10:154
120634799499,39cyclictest0-21swapper/323:21:123
120634799499,20cyclictest0-21swapper/323:42:323
1206347994930,19cyclictest0-21swapper/322:34:463
1206347994910,39cyclictest0-21swapper/323:52:283
1206347994910,39cyclictest0-21swapper/321:51:173
1206347994910,39cyclictest0-21swapper/321:30:563
1206347994910,39cyclictest0-21swapper/320:31:373
1206347994910,39cyclictest0-21swapper/319:27:213
120634799489,39cyclictest0-21swapper/320:51:103
120634799489,39cyclictest0-21swapper/319:10:083
120634799489,39cyclictest0-21swapper/300:31:413
120634799489,19cyclictest0-21swapper/300:12:023
120634799489,19cyclictest0-21swapper/300:12:013
120634799478,39cyclictest0-21swapper/322:40:263
120634799478,39cyclictest0-21swapper/322:22:023
120634799478,39cyclictest0-21swapper/321:38:163
120634799478,39cyclictest0-21swapper/321:23:403
120634799478,39cyclictest0-21swapper/320:10:573
1206347994729,18cyclictest0-21swapper/321:46:023
120634799464,40cyclictest1075756-21sshd22:37:233
120634799456,39cyclictest0-21swapper/319:34:573
120634699457,19cyclictest0-21swapper/219:50:192
120634699455,39cyclictest0-21swapper/219:20:182
120634499455,1cyclictest0-21swapper/019:45:160
1206344994526,19cyclictest0-21swapper/021:50:160
1206348994426,0cyclictest0-21swapper/423:45:164
120634499436,18cyclictest0-21swapper/022:15:180
1206350994223,19cyclictest0-21swapper/621:25:166
1206350994222,20cyclictest1248357-21kworker/4:120:31:426
120634499424,19cyclictest0-21swapper/020:05:160
1206351994122,19cyclictest0-21swapper/721:55:187
120635099412,39cyclictest0-21swapper/622:01:486
1206350994122,19cyclictest0-21swapper/621:13:466
120634699413,19cyclictest0-21swapper/221:00:162
1206344994123,18cyclictest874-21mta-sts-daemon23:05:190
120635099401,39cyclictest0-21swapper/623:37:556
120635099401,39cyclictest0-21swapper/620:43:436
120635099390,39cyclictest1220975-21kworker/u32:0+events_unbound20:13:416
120634899390,20cyclictest0-21swapper/423:10:174
120634699390,0cyclictest0-21swapper/220:55:172
120634499391,19cyclictest0-21swapper/022:40:180
120634499390,20cyclictest0-21swapper/022:00:170
1206350993819,19cyclictest0-21swapper/621:07:446
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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