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2025-11-15 - 13:00

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 Nov 15, 2025 00:39:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
909546995647,6cyclictest421-21avahi-daemon00:34:120
909546995243,6cyclictest1-21systemd22:35:020
909547994734,10cyclictest1055599-21latency_hist23:35:021
909548994639,4cyclictest0-21swapper/223:24:132
909548994636,5cyclictest0-21swapper/200:29:112
909548994636,5cyclictest0-21swapper/200:29:112
909547994636,7cyclictest1014081-21basename22:40:011
909547994537,4cyclictest0-21swapper/123:54:081
909547994535,7cyclictest952925-21tail21:19:221
909547994535,7cyclictest952925-21tail21:19:221
909546994537,5cyclictest1-21systemd23:35:020
909548994432,8cyclictest422-21dbus-daemon19:38:572
90954899442,32cyclictest1058546-21ssh23:39:142
909547994432,8cyclictest1-21systemd22:45:021
909547994432,8cyclictest1-21systemd22:45:021
909546994437,4cyclictest422-21dbus-daemon22:40:020
909548994331,9cyclictest975389-21mailstats21:49:202
909547994335,5cyclictest1032972-21systemd-run23:05:011
909547994334,6cyclictest964620-21systemd-run21:35:011
909547994334,6cyclictest964620-21systemd-run21:35:011
909547994334,6cyclictest929041-21systemd-run20:15:021
909547994334,5cyclictest0-21swapper/122:55:011
909547994334,4cyclictest0-21swapper/122:24:061
909547994333,6cyclictest998400-21sh22:19:201
909546994337,3cyclictest1078347-21munin-plugin-st00:05:010
909546994336,4cyclictest960815-21ssh21:30:010
909546994336,4cyclictest960815-21ssh21:30:010
909546994335,5cyclictest3313763-21cups-browsed20:05:010
909548994235,4cyclictest972289-21cut21:45:012
909548994233,3cyclictest0-21swapper/222:09:152
909547994233,5cyclictest948544-21ntp_kernel_err21:14:071
90954699424,29cyclictest1050747-21ssh23:29:100
909546994233,6cyclictest3313763-21cups-browsed22:04:200
909548994133,5cyclictest1084554-21kernelversion00:14:042
909548994132,6cyclictest1010467-21latency_hist22:35:032
909547994136,2cyclictest0-21swapper/100:34:081
909547994134,3cyclictest0-21swapper/123:25:011
909547994132,6cyclictest914592-21fschecks_time19:29:001
909547994132,6cyclictest3313742-21cupsd23:26:571
909547994132,4cyclictest0-21swapper/123:20:011
909547994131,5cyclictest0-21swapper/100:20:011
909547994125,10cyclictest945531-21diskmemload21:54:091
90954699413,31cyclictest1028134-21ssh22:59:080
90954699413,31cyclictest1028134-21ssh22:59:080
909548994033,3cyclictest0-21swapper/223:34:302
90954899402,31cyclictest963705-21ssh21:34:142
90954899402,31cyclictest963705-21ssh21:34:142
90954899401,34cyclictest1024479-21ssh22:54:112
909547994032,5cyclictest913086-21fschecks_count19:24:021
909547994022,12cyclictest491-21gdbus22:03:581
909546994033,4cyclictest1002949-21latency_hist22:25:020
909546994031,6cyclictest421-21avahi-daemon23:09:410
909548993930,5cyclictest0-21swapper/200:39:132
909547993929,6cyclictest967686-21sendmail_mailqu21:39:171
909546993932,4cyclictest935018-21cron20:35:010
909546993928,8cyclictest1-21systemd23:20:010
909548993830,5cyclictest995211-21cron22:15:012
909548993830,5cyclictest936523-21munin-plugin-st20:40:012
909548993825,9cyclictest1051143-21switchtime23:29:212
90954799385,25cyclictest1005665-21ssh22:29:081
909547993830,5cyclictest916069-21fschecks_count19:34:021
909547993829,5cyclictest453-21systemd-logind20:20:021
909547993826,9cyclictest1074546-40ogrotate00:00:011
909547993826,4cyclictest0-21swapper/122:49:121
909547993826,4cyclictest0-21swapper/122:49:121
909546993832,3cyclictest1059439-21munin-run23:40:010
909546993831,4cyclictest0-21swapper/023:25:010
909546993815,19cyclictest978882-21ssh21:54:080
909548993728,5cyclictest1082086-21systemd-run00:10:022
909548993728,4cyclictest0-21swapper/221:29:132
909548993728,4cyclictest0-21swapper/221:29:132
909548993723,9cyclictest998032-21ntp_kernel_err22:19:092
909547993728,6cyclictest995223-21munin-run22:15:011
909547993728,5cyclictest1093029-21unixbench_multi00:24:201
909547993727,6cyclictest421-21avahi-daemon20:04:151
909547993727,6cyclictest1074632-21cups-browsed00:28:091
909547993727,6cyclictest1074632-21cups-browsed00:28:091
90954799372,20cyclictest657-21snmpd23:39:171
909546993726,4cyclictest0-21swapper/000:09:080
909546993723,11cyclictest1063247-21kworker/u8:10-xprtiod00:00:010
90954899365,25cyclictest1032009-21ssh23:04:102
909548993629,4cyclictest0-21swapper/219:15:012
909548993628,5cyclictest1074558-21cron00:00:012
909548993628,4cyclictest0-21swapper/221:39:122
909548993623,9cyclictest1021036-21switchtime22:49:192
909548993623,9cyclictest1021036-21switchtime22:49:192
90954899361,28cyclictest1062281-21sh23:44:122
909547993630,3cyclictest0-21swapper/120:00:011
909547993628,5cyclictest975767-21unixbench_singl21:49:241
909547993628,4cyclictest0-21swapper/121:44:061
90954799362,29cyclictest1036753-21systemctl23:10:011
90954799362,23cyclictest1028218-21sh22:59:111
90954799362,23cyclictest1028218-21sh22:59:111
909546993630,4cyclictest1031480-21sort23:03:590
909546993629,4cyclictest941131-21latency_hist20:55:020
909546993628,5cyclictest1-21systemd00:20:020
90954699362,26cyclictest956055-21sh21:24:110
90954699362,26cyclictest956055-21sh21:24:110
90954699361,29cyclictest1069774-21ssh23:54:070
909548993530,2cyclictest0-21swapper/222:00:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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