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2025-11-21 - 05:30
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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 rack5slot2.osadl.org (updated Fri Nov 21, 2025 00:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
311522198182,11sleep10-21swapper/119:09:331
289662186170,11sleep30-21swapper/319:05:043
309572182164,13sleep00-21swapper/019:06:590
289652173154,14sleep20-21swapper/219:05:032
102742440,0sleep30-21swapper/300:32:163
212622430,0sleep20-21swapper/223:32:352
48052420,0sleep20-21swapper/219:20:002
3137299113,4cyclictest7718-21munin-run22:05:020
313729993,3cyclictest16897-21munin-run20:49:590
13534290,0sleep10-21swapper/121:19:181
313729982,3cyclictest22952-21apt-get22:45:010
313729962,4cyclictest11961-21sendmail-msp20:40:000
313729960,3cyclictest6993-21munin-run00:15:010
313869955,0cyclictest2055-21kworker/3:000:20:163
313869953,1cyclictest22849-21/usr/sbin/munin23:50:183
313869950,5cyclictest0-21swapper/322:29:553
313839954,1cyclictest23433-21ssh00:22:442
313839950,5cyclictest0-21swapper/222:19:132
313839950,5cyclictest0-21swapper/200:34:052
313839950,4cyclictest32722-21ssh21:45:042
313839950,0cyclictest26786-21diskmemload22:44:142
313839950,0cyclictest0-21swapper/219:50:212
313779951,3cyclictest0-21swapper/119:40:081
313729955,0cyclictest0-21swapper/000:38:010
313729954,1cyclictest13706-21ssh21:50:590
313729953,1cyclictest13002-21munin-run22:40:010
313729952,1cyclictest0-21swapper/023:05:140
313729951,4cyclictest19607-21munin-run19:50:000
313729950,5cyclictest0-21swapper/023:58:360
313729950,5cyclictest0-21swapper/023:34:180
313729950,5cyclictest0-21swapper/022:55:140
313729950,4cyclictest31665-21apt-get19:10:020
313729950,4cyclictest31665-21apt-get19:10:020
313729950,1cyclictest0-21swapper/023:05:010
14971250,0sleep00-21swapper/022:24:500
10847250,0sleep10-21swapper/123:43:591
313869944,0cyclictest2055-21kworker/3:022:39:303
313869944,0cyclictest0-21swapper/322:23:033
313869944,0cyclictest0-21swapper/322:16:133
313869944,0cyclictest0-21swapper/319:15:133
313869944,0cyclictest0-21swapper/300:05:293
313869943,1cyclictest19593-21/usr/sbin/munin20:55:193
313869942,1cyclictest15906-21perl00:35:153
313869941,3cyclictest1161-21tail23:55:163
313869941,2cyclictest711-21runrttasks22:53:043
313869941,1cyclictest0-21swapper/319:50:113
313869940,4cyclictest0-21swapper/323:34:343
313869940,4cyclictest0-21swapper/323:15:113
313869940,4cyclictest0-21swapper/323:00:123
313869940,4cyclictest0-21swapper/322:30:133
313869940,4cyclictest0-21swapper/322:12:553
313869940,4cyclictest0-21swapper/322:05:123
313869940,4cyclictest0-21swapper/322:00:133
313869940,4cyclictest0-21swapper/321:26:473
313869940,4cyclictest0-21swapper/321:17:563
313869940,4cyclictest0-21swapper/320:42:573
313869940,4cyclictest0-21swapper/320:10:153
313869940,4cyclictest0-21swapper/320:05:123
313869940,4cyclictest0-21swapper/300:15:023
313869940,3cyclictest8912-21expr23:10:123
313869940,3cyclictest7178-21cat00:15:003
313869940,3cyclictest5383-21sh21:30:383
313869940,3cyclictest4505-21ssh23:24:323
313869940,3cyclictest32404-21sh23:38:213
313869940,3cyclictest31481-21ssh21:11:413
313869940,3cyclictest3120-21sh23:40:123
313869940,3cyclictest23421-21sh22:45:033
313869940,3cyclictest17833-21expr19:45:133
313869940,3cyclictest15642-21ssh00:02:293
313869940,3cyclictest15169-21df20:45:163
313869940,3cyclictest12932-21/usr/sbin/munin21:35:133
313869940,3cyclictest11979-21/usr/sbin/munin21:50:183
313869940,3cyclictest1143-21ssh23:05:433
313869940,1cyclictest7187-21ntp_states23:25:183
313869940,1cyclictest4989-21/usr/sbin/munin19:20:143
313869940,1cyclictest22955-21/usr/sbin/munin21:40:213
313869940,1cyclictest15269-21/usr/sbin/munin21:20:223
313869940,1cyclictest1275-21fschecks_time21:45:153
313869940,1cyclictest12495-21ntp_states22:55:203
313869940,1cyclictest0-21swapper/300:25:003
313839944,0cyclictest0-21swapper/223:35:012
313839944,0cyclictest0-21swapper/222:58:372
313839944,0cyclictest0-21swapper/222:33:362
313839944,0cyclictest0-21swapper/221:37:352
313839944,0cyclictest0-21swapper/220:00:142
313839942,1cyclictest495-21nscd00:15:002
313839941,1cyclictest0-21swapper/219:55:132
313839940,4cyclictest20647-21/usr/sbin/munin21:55:212
313839940,4cyclictest13356-21ssh00:01:022
313839940,4cyclictest0-21swapper/223:53:112
313839940,4cyclictest0-21swapper/223:40:132
313839940,4cyclictest0-21swapper/223:15:112
313839940,4cyclictest0-21swapper/223:11:132
313839940,4cyclictest0-21swapper/223:05:152
313839940,4cyclictest0-21swapper/223:04:172
313839940,4cyclictest0-21swapper/222:35:022
313839940,4cyclictest0-21swapper/222:25:132
313839940,4cyclictest0-21swapper/222:14:322
313839940,4cyclictest0-21swapper/222:07:562
313839940,4cyclictest0-21swapper/221:40:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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