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2025-12-09 - 11:45

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 00:39:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3060862995545,7cyclictest3090317-21sshd20:49:261
3060862995341,8cyclictest422-21dbus-daemon00:40:011
306086199532,23cyclictest3173012-21ntpq22:49:270
3060861995237,13cyclictest3060860-21cyclictest22:59:350
306086199522,27cyclictest3195926-21ntpq23:19:230
306086199481,28cyclictest3069314-21ntp_states19:39:240
3060861994714,25cyclictest3211415-21ssh23:39:260
306086199471,28cyclictest3236275-21sh00:11:310
306086199471,27cyclictest3201960-21ssh23:27:220
306086199461,30cyclictest3096846-21diskmemload22:51:030
3060863994534,4cyclictest0-21swapper/221:19:252
3060861994531,11cyclictest3123865-21munin-plugin-st21:45:020
306086199451,31cyclictest3192175-21ntpq23:14:250
306086199451,28cyclictest3096846-21diskmemload21:53:300
306086199451,26cyclictest3213103-21ssh23:41:230
3060863994437,3cyclictest0-21swapper/200:20:012
3060863994437,3cyclictest0-21swapper/200:20:012
3060863994436,5cyclictest0-21swapper/221:40:022
3060863994434,5cyclictest0-21swapper/221:09:222
3060863994434,5cyclictest0-21swapper/221:09:222
3060862994436,5cyclictest955-21mta-sts-daemon19:19:261
3060862994436,5cyclictest3100494-21timerwakeupswit21:14:361
3060862994436,5cyclictest3100494-21timerwakeupswit21:14:361
3060862994436,3cyclictest0-21swapper/121:19:271
3060862994420,20cyclictest271ktimers/122:04:271
306086199444,35cyclictest3234498-21ntpq00:09:240
306086199442,24cyclictest3249373-21ntpq00:29:250
306086199441,22cyclictest3097934-21ssh21:11:390
306086199441,22cyclictest3097934-21ssh21:11:390
3060863994335,5cyclictest698-21cron23:40:002
3060863994335,5cyclictest3169651-21grep22:44:342
3060863994334,6cyclictest422-21dbus-daemon21:45:022
3060862994335,5cyclictest422-21dbus-daemon00:15:021
3060862994335,5cyclictest3204435-21systemd-run23:30:011
3060861994333,7cyclictest0-21swapper/000:25:010
306086199432,36cyclictest3066287-21ntpq19:29:220
306086199432,24cyclictest3168599-21df_inode22:44:140
306086199431,38cyclictest3093239-21ntpq20:59:270
306086199431,38cyclictest3076823-21ntpq20:04:250
306086199431,36cyclictest3207414-21ntpq23:34:220
306086199431,36cyclictest3207414-21ntpq23:34:220
306086199431,32cyclictest3132985-21ssh21:57:330
306086199431,25cyclictest3094605-21memory21:04:210
306086199431,25cyclictest3094605-21memory21:04:210
306086199431,25cyclictest3073733-21ntpq19:54:210
3060862994234,5cyclictest422-21dbus-daemon22:30:011
3060862994234,5cyclictest3219892-21munin-plugin-st23:50:011
306086199429,29cyclictest3226808-21ssh23:59:260
306086199422,36cyclictest3256378-21ntpq00:39:240
306086199422,35cyclictest3063281-21ntpq19:19:260
306086199421,39cyclictest3164053-21ssh22:38:180
306086199421,36cyclictest3087242-21ntpq20:39:220
306086199421,36cyclictest3075209-21ntpq19:59:200
306086199421,36cyclictest3070784-21ntpq19:44:240
306086199421,36cyclictest3061828-21ntpq19:14:280
306086199421,26cyclictest3223709-21sh23:54:580
3060863994134,4cyclictest0-21swapper/222:19:222
3060863994130,7cyclictest3161104-21latency22:34:192
3060862994133,5cyclictest3227609-21cron00:00:011
3060862994132,6cyclictest3087839-21sendmail20:40:011
306086199418,17cyclictest151ktimers/022:20:380
306086199413,34cyclictest3161330-21ntpq22:34:230
3060861994129,8cyclictest151ktimers/020:14:210
3060861994129,8cyclictest151ktimers/020:14:210
306086199412,34cyclictest3082855-21ntpq20:24:250
306086199411,35cyclictest3188291-21ntpq23:09:240
306086199411,34cyclictest3157688-21ntpq22:29:290
306086199411,22cyclictest3197220-21ssh23:20:180
3060863994034,3cyclictest0-21swapper/221:25:012
3060863994030,5cyclictest0-21swapper/223:24:222
3060863994030,4cyclictest0-21swapper/222:04:222
3060862994033,3cyclictest0-21swapper/122:50:011
3060862994032,5cyclictest3065351-21cron19:25:011
3060862994031,5cyclictest3115797-21unixbench-2d21:34:341
306086199409,28cyclictest3113090-21ssh21:31:120
306086199408,30cyclictest3108875-21ssh21:25:220
306086199408,30cyclictest3108875-21ssh21:25:220
306086199401,35cyclictest3116681-21ssh21:35:430
306086199401,35cyclictest3103842-21ntpq21:19:270
306086199401,34cyclictest3218953-21ntpq23:49:200
306086199401,34cyclictest3107580-21ntpq21:24:240
306086199401,34cyclictest3091776-21ntpq20:54:230
306086199401,34cyclictest3088837-21ntpq20:44:250
306086199401,34cyclictest3064784-21ntpq19:24:220
306086199401,31cyclictest3127504-21ssh21:49:360
306086199401,22cyclictest3147975-21ssh22:16:450
3060863993932,5cyclictest0-21swapper/221:29:192
3060863993932,5cyclictest0-21swapper/221:29:192
3060863993930,6cyclictest3246120-21cut00:24:312
3060863993929,6cyclictest1196112-21cups-browsed21:54:132
3060862993934,2cyclictest0-21swapper/122:59:241
3060862993932,3cyclictest0-21swapper/119:14:281
3060862993930,5cyclictest3093918-21latency_hist21:00:021
306086199399,25cyclictest3252828-21ntpq00:34:230
306086199396,30cyclictest3078246-21ntpq20:09:230
306086199393,33cyclictest3090222-21ntpq20:49:220
3060861993933,3cyclictest0-21swapper/000:04:260
306086199393,32cyclictest3081339-21ntpq20:19:260
306086199392,33cyclictest3242256-21ntpq00:19:280
306086199392,33cyclictest3242256-21ntpq00:19:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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