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2025-12-07 - 10:42

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 Sun Dec 07, 2025 00:39:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
318180799533,23cyclictest657-21snmpd21:04:192
3181805995339,7cyclictest151ktimers/019:49:240
3181805995234,8cyclictest12450irq/32-eth022:59:210
3181805995234,8cyclictest12450irq/32-eth022:59:210
318180799512,25cyclictest3346021-21ssh00:09:292
3181807994940,6cyclictest1-21systemd00:00:022
3181807994939,7cyclictest3217789-21diskmemload21:10:022
3181806994840,4cyclictest0-21swapper/122:34:201
3181807994741,3cyclictest0-21swapper/222:59:132
3181807994741,3cyclictest0-21swapper/222:59:132
3181807994636,6cyclictest3299929-21systemd-run23:05:012
3181807994621,6cyclictest3184827-21kworker/u8:9+xprtiod19:45:012
3181807994621,6cyclictest3184827-21kworker/u8:9+xprtiod19:45:012
3181805994631,5cyclictest3196815-21systemd-run20:00:020
3181806994534,7cyclictest421-21avahi-daemon23:40:131
3181807994433,4cyclictest0-21swapper/223:44:262
3181805994418,7cyclictest3355206-21sh00:22:040
3181805994417,10cyclictest3222581-21sh21:16:130
3181807994335,5cyclictest422-21dbus-daemon00:30:012
3181807994335,5cyclictest422-21dbus-daemon00:30:012
3181805994316,11cyclictest3258610-21sh22:07:300
3181807994230,8cyclictest3342696-21switchtime00:04:372
3181807994228,6cyclictest0-21swapper/220:24:232
3181807994219,17cyclictest351ktimers/220:34:222
3181807994219,17cyclictest351ktimers/220:34:222
3181806994236,3cyclictest0-21swapper/122:39:221
3181806994234,5cyclictest3250332-21latency_hist21:55:021
318180599427,29cyclictest3281091-21ssh22:39:230
3181805994225,10cyclictest3187302-21ntpq19:29:260
3181805994218,7cyclictest3217789-21diskmemload22:28:380
3181805994217,7cyclictest3256199-21/usr/sbin/munin22:04:180
3181805994216,7cyclictest3358270-21sh00:26:000
3181805994216,7cyclictest3358270-21sh00:26:000
3181807994134,4cyclictest956-21mta-sts-daemon23:49:292
3181807994133,5cyclictest0-21swapper/219:40:012
3181807994132,3cyclictest0-21swapper/222:29:232
3181806994134,3cyclictest3307103-21kworker/u8:7-nfsiod00:00:031
3181806994132,6cyclictest3335400-21sed23:54:341
3181805994122,15cyclictest3214151-21ntpq20:59:210
3181805994118,7cyclictest3315012-21sh23:26:010
3181805994117,8cyclictest3365627-21sh00:38:210
3181805994116,7cyclictest3324423-21sh23:39:340
3181805994116,6cyclictest3297087-21sh23:01:200
3181807994032,5cyclictest3367497-21grep00:40:002
3181807994030,7cyclictest955-21mta-sts-daemon22:34:262
3181807994030,7cyclictest0-21swapper/223:29:202
3181807994029,7cyclictest1315733-21cups-browsed21:56:532
3181806994032,5cyclictest657-21snmpd00:30:021
3181806994032,5cyclictest657-21snmpd00:30:021
3181806994032,5cyclictest3296290-21awk23:00:011
3181806994032,5cyclictest3296290-21awk23:00:011
3181805994028,7cyclictest151ktimers/019:54:210
3181805994027,8cyclictest3203767-21ntpq20:24:230
3181805994027,10cyclictest3268629-21ssh22:21:160
3181805994023,14cyclictest3332055-21ssh23:49:450
3181805994015,9cyclictest3344779-21sh00:08:160
3181805994015,7cyclictest3326422-21sh23:42:490
3181807993930,4cyclictest0-21swapper/223:09:262
3181807993930,4cyclictest0-21swapper/223:09:262
3181807993929,6cyclictest3246818-21cron21:50:012
3181807993929,6cyclictest1315733-21cups-browsed22:49:192
3181806993931,5cyclictest3298340-21aten_r2power_cu23:04:101
3181805993927,8cyclictest3182671-21ntpq19:14:190
3181805993926,8cyclictest3242610-21ntpq21:44:310
3181805993926,8cyclictest3191799-21ntpq19:44:270
3181805993926,8cyclictest3191799-21ntpq19:44:270
3181805993925,12cyclictest3300441-21ssh23:05:430
3181805993925,12cyclictest3300441-21ssh23:05:430
3181805993923,14cyclictest3250536-21ssh21:55:040
3181805993922,14cyclictest3262404-21ssh22:13:030
3181805993921,12cyclictest3249633-21ps21:54:310
3181805993916,7cyclictest3309050-21sh23:19:030
3181807993831,4cyclictest3348975-21aten_r2power_fr00:14:192
3181807993830,5cyclictest3183278-21cron19:15:012
3181807993817,17cyclictest3284698-21ssh22:44:252
3181807993817,17cyclictest3284698-21ssh22:44:252
3181806993830,5cyclictest3221863-21systemd-run21:15:021
3181806993829,5cyclictest3314543-21latency_hist23:25:021
3181805993831,4cyclictest3184833-21systemd-run19:20:010
3181805993826,8cyclictest3212675-21ntpq20:54:210
3181805993824,8cyclictest3215673-21ntpq21:04:200
3181805993823,8cyclictest3338642-21ntpq23:59:250
3181805993823,11cyclictest3225758-21ssh21:20:130
3181805993823,10cyclictest3286624-21ssh22:47:150
3181805993821,15cyclictest3312542-21ssh23:23:380
3181805993821,14cyclictest3351740-21ssh00:17:360
3181805993821,14cyclictest3266084-21ssh22:18:320
3181805993820,7cyclictest3275974-21ssh22:32:050
3181805993820,15cyclictest3304162-21ssh23:11:010
3181805993820,15cyclictest3304162-21ssh23:11:010
3181805993818,10cyclictest3340955-21ssh00:02:530
3181805993815,7cyclictest3218453-21ssh21:10:500
3181805993814,17cyclictest12450irq/32-eth022:54:240
3181805993814,17cyclictest12450irq/32-eth022:54:240
3181806993731,3cyclictest0-21swapper/121:39:251
3181806993726,8cyclictest3257385-21munin-plugin-st22:05:021
3181805993729,4cyclictest3211257-21ntpq20:49:250
3181805993726,7cyclictest3202282-21ntpq20:19:260
3181805993724,8cyclictest3349655-21ntpq00:14:320
3181805993724,5cyclictest3200669-21ntpq20:14:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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