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2025-12-10 - 00:00

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 Tue Dec 09, 2025 12:39:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4077783995443,6cyclictest3227738-21cups-browsed12:09:272
4077783995140,8cyclictest4154763-21aten_r2power_cu10:14:132
407778299493,39cyclictest3227738-21cups-browsed11:14:251
4077781994938,7cyclictest30930-21ssh11:54:290
4077783994834,11cyclictest4113773-21idleruntime-cro09:10:012
4077781994834,9cyclictest12450irq/32-eth012:34:280
4077781994834,9cyclictest12450irq/32-eth012:34:280
4077782994736,8cyclictest4097280-21systemd-run08:15:021
4077781994726,15cyclictest4089990-40mandb07:50:330
4077781994726,15cyclictest4089990-40mandb07:50:330
4077783994539,3cyclictest0-21swapper/212:40:012
4077783994539,3cyclictest0-21swapper/212:40:012
4077783994534,7cyclictest1-21systemd10:25:022
407778299452,36cyclictest4179248-21ssh10:49:281
4077781994538,3cyclictest0-21swapper/009:10:010
4077781994535,5cyclictest0-21swapper/009:19:220
4077783994434,6cyclictest4101789-21systemd-run08:30:012
4077783994336,4cyclictest3607740-21kworker/u8:12-xprtiod09:17:012
4077782994338,2cyclictest0-21swapper/109:30:011
407778199434,31cyclictest4158821-21ssh10:19:220
4077781994321,11cyclictest4113765-21diskmemload11:29:320
407778399426,30cyclictest3182-21ssh11:14:192
4077783994234,5cyclictest4172385-21ntp_kernel_pll_10:39:262
4077782994233,5cyclictest45920-21munin-run12:15:011
4077782994232,7cyclictest4152722-21head10:09:361
4077782994232,7cyclictest4152722-21head10:09:361
4077783994135,3cyclictest0-21swapper/210:20:012
4077783994132,6cyclictest56186-21systemd-run12:30:022
4077783994130,8cyclictest4133543-21sendmail09:40:012
4077783994130,8cyclictest4133543-21sendmail09:40:012
4077782994132,4cyclictest0-21swapper/110:34:221
4077781994134,5cyclictest4094812-21fschecks_count08:09:150
4077781994123,11cyclictest12450irq/32-eth008:39:270
4077781994029,7cyclictest422-21dbus-daemon10:23:370
4077781994029,7cyclictest27899-21latency_hist11:50:020
4077781994027,9cyclictest4156275-21munin-plugin-st10:15:000
4077783993935,2cyclictest0-21swapper/210:00:012
4077783993935,2cyclictest0-21swapper/210:00:012
4077783993932,3cyclictest0-21swapper/209:45:002
4077783993931,5cyclictest422-21dbus-daemon09:50:012
4077783993929,7cyclictest421-21avahi-daemon11:39:222
4077782993930,5cyclictest4100315-21latency_hist08:25:021
4077781993932,4cyclictest4082816-21uniq07:29:170
4077781993931,6cyclictest7744-21idleruntime-cro11:20:010
4077781993926,5cyclictest4152303-21ssh10:09:310
4077781993926,5cyclictest4152303-21ssh10:09:310
4077783993830,5cyclictest3227738-21cups-browsed11:09:382
4077783993829,5cyclictest3227738-21cups-browsed11:52:582
407778299384,26cyclictest3227706-21cupsd11:44:251
4077781993827,3cyclictest151ktimers/010:34:200
407778399377,24cyclictest4129600-21ssh09:34:282
4077783993731,3cyclictest0-21swapper/209:00:012
4077783993728,6cyclictest453-21systemd-logind10:30:012
407778399372,29cyclictest34458-21ssh11:59:242
4077782993729,5cyclictest7742-21munin-plugin-st11:20:011
4077782993729,5cyclictest4159078-21processes10:19:301
4077782993728,6cyclictest422-21dbus-daemon07:50:301
4077782993728,6cyclictest422-21dbus-daemon07:50:301
4077782993728,6cyclictest4092752-21cron08:00:001
4077782993728,6cyclictest3227738-21cups-browsed10:14:141
4077781993730,4cyclictest4123903-21unixbench_singl09:24:470
4077781993730,3cyclictest0-21swapper/012:09:270
4077781993713,16cyclictest12450irq/32-eth011:34:210
407778399363,26cyclictest4116634-21ssh09:14:222
4077783993628,5cyclictest4109282-21systemd-run08:55:012
4077783993625,8cyclictest4176642-21/usr/sbin/munin10:45:022
4077782993626,6cyclictest266-21systemd-journal08:30:011
4077782993623,9cyclictest17943-21unixbench_singl11:34:341
4077781993630,3cyclictest4187186-21idleruntime-cro11:00:010
4077781993626,7cyclictest657-21snmpd12:39:230
4077781993626,7cyclictest657-21snmpd12:39:230
407778199362,27cyclictest51922-21ssh12:24:280
4077783993529,3cyclictest0-21swapper/212:19:412
4077783993529,3cyclictest0-21swapper/210:05:012
4077783993526,6cyclictest421-21avahi-daemon11:01:102
4077783993526,6cyclictest4141823-21aten_r2power_en09:54:102
4077783993526,6cyclictest4141823-21aten_r2power_en09:54:102
4077782993528,3cyclictest0-21swapper/109:49:271
4077782993526,6cyclictest422-21dbus-daemon09:40:011
4077782993526,6cyclictest422-21dbus-daemon09:40:011
4077781993529,3cyclictest0-21swapper/010:29:240
4077781993528,3cyclictest0-21swapper/009:50:000
4077781993527,5cyclictest55592-21sendmail_mailtr12:29:320
4077781993526,6cyclictest0-21swapper/011:40:030
4077781993525,8cyclictest4096308-21fschecks_count08:14:150
4077781993525,6cyclictest421-21avahi-daemon11:58:040
4077783993426,5cyclictest4080809-21systemd-run07:20:022
4077783993426,5cyclictest27719-21idleruntime-cro11:50:002
4077783993425,6cyclictest4123510-21sendmail_mailst09:24:422
4077783993425,5cyclictest4125971-21sh09:29:162
4077783993424,8cyclictest4186758-21timerandwakeup10:59:362
4077783993424,7cyclictest38060-21ntp_kernel_pll_12:04:222
4077782993428,3cyclictest0-21swapper/111:40:011
4077782993426,5cyclictest61800-21fschecks_time12:39:151
4077782993426,5cyclictest61800-21fschecks_time12:39:151
4077782993424,7cyclictest4113765-21diskmemload09:35:011
407778299342,23cyclictest4189980-21ssh11:04:241
407778199343,25cyclictest3262-21ssh11:14:220
4077781993425,6cyclictest3227738-21cups-browsed10:41:040
4077781993423,7cyclictest3227738-21cups-browsed09:36:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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