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2025-07-12 - 12:42

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, 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.

Note that this system runs a non-RT kernel.
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 rackbslot7s.osadl.org (updated Sat Jul 12, 2025 00:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2345222607,2238sleep01405-21/usr/sbin/munin22:29:320
2345222607,2238sleep01405-21/usr/sbin/munin22:29:320
4810210555,1039sleep031061-1kworker/0:1H22:39:460
1178276919,735sleep31210-21/usr/sbin/munin20:44:283
17610241315,377sleep017761-21unixbench_singl19:54:340
199812371227,23sleep00-21swapper/021:44:220
18575232512,234sleep018643-21ls21:39:250
2133523046,29sleep00-21swapper/020:06:500
258722303134,150sleep025811-21latency_hist22:04:000
18041228718,257sleep118113-21wc23:19:331
28048226611,239sleep228158-21cat20:29:012
28048226611,239sleep228158-21cat20:29:012
11314225882,30sleep00-21swapper/021:18:580
32242224038,187sleep032373-21timerwakeupswit20:39:290
9450223521,172sleep00-21swapper/022:54:160
1562222744,165sleep21637-21perl22:29:182
1562222744,165sleep21637-21perl22:29:182
28344221713,153sleep028444-21fschecks_time20:29:190
4400220135,49sleep24419-21apt-get19:14:102
2666922017,175sleep031061-1kworker/0:1H20:24:100
2666922017,175sleep031061-1kworker/0:1H20:24:100
28821219814,172sleep228904-21sed20:29:292
24357219374,105sleep024481-21timerwakeupswit23:39:310
586721929,169sleep05948-21mailstats20:59:320
78521876,19sleep00-21swapper/020:44:170
976321868,100sleep09799-21basename21:13:570
12790218111,149sleep012809-21apt-get23:04:090
2679321809,145sleep00-21swapper/023:49:080
19937218014,146sleep020003-21systemd-run20:03:590
9208217919,140sleep00-21swapper/022:54:000
3137721798,27sleep00-21swapper/020:39:000
3244021750,37sleep232444-21fschecks_count22:24:212
30227217517,18sleep00-21swapper/018:54:090
1255921716,13sleep00-21swapper/021:20:070
1255921716,13sleep00-21swapper/021:20:070
31738216883,17sleep00-21swapper/018:59:010
31738216883,17sleep00-21swapper/018:59:010
78821638,140sleep0832-21basename00:09:230
5127216213,129sleep00-21swapper/020:58:590
2185421560,6sleep20-21swapper/221:49:232
1472321567,73sleep014759-21latency_hist21:28:590
6852215419,18sleep20-21swapper/222:44:292
23337215434,108sleep023331-21apt-get20:14:130
4188215313,122sleep00-21swapper/019:13:590
76512151114,23sleep07671-21latency_hist22:48:590
1737421518,12sleep20-21swapper/221:34:432
1737421518,12sleep20-21swapper/221:34:432
21918215020,110sleep121993-21mailstats21:49:271
2335121495,69sleep00-21swapper/023:38:260
11263214615,76sleep011286-21kernelversion22:59:210
822221459,18sleep00-21swapper/019:24:340
822221459,18sleep00-21swapper/019:24:340
1995521435,64sleep00-21swapper/023:24:330
21064214011,52sleep021124-21find23:29:250
2890221399,48sleep07166-21sshd23:54:290
1795421399,40sleep00-21swapper/023:19:320
7237213816,99sleep27310-21unin-run19:23:592
2873921387,57sleep00-21swapper/022:11:390
2873921387,57sleep00-21swapper/022:11:390
21305213820,98sleep321445-21unixbench_singl23:29:283
450121367,16sleep00-21swapper/019:14:160
2988321366,57sleep00-21swapper/023:59:010
2988321366,57sleep00-21swapper/023:59:010
19922213630,90sleep319931-21kworker/u8:120:03:583
827021347,42sleep00-21swapper/021:09:000
423521348,110sleep04248-21apt-get22:38:570
119821338,44sleep01350-21date22:29:000
24645213217,93sleep324730-21cat20:19:003
1636021329,107sleep016403-21munin-run21:34:000
1636021329,107sleep016403-21munin-run21:34:000
1276921316,87sleep00-21swapper/019:39:320
30435213013,98sleep130009-21/usr/sbin/munin20:34:411
1195121308,66sleep011952-21munin-run19:38:590
6550212916,65sleep00-21swapper/019:19:290
2920621298,45sleep029198-21apt-get22:14:140
3551212810,40sleep00-21swapper/020:53:580
29678212822,79sleep20-21swapper/223:58:592
23100212872,41sleep023239-21latency_hist20:14:000
32004212526,79sleep132070-21sendmail_mailqu00:04:361
32004212526,79sleep132070-21sendmail_mailqu00:04:361
27434212415,94sleep027582-21cat22:09:010
22199212310,59sleep00-21swapper/021:49:300
1425221238,98sleep00-21swapper/019:44:280
1425221238,98sleep00-21swapper/019:44:280
30429212017,85sleep30-21swapper/323:59:293
30429212017,85sleep30-21swapper/323:59:293
25291212012,94sleep325332-21ntp_offset20:19:243
25291212012,94sleep325332-21ntp_offset20:19:243
2427921207,37sleep00-21swapper/021:58:590
3523211918,81sleep33546-21sh20:53:573
3085021196,31sleep00-21swapper/022:19:190
16579211913,86sleep031061-1kworker/0:1H19:53:570
24595211813,88sleep10-21swapper/120:18:581
9156211720,32sleep29185-21munin-run22:53:582
2496421176,33sleep00-21swapper/020:19:170
2496421176,33sleep00-21swapper/020:19:170
3177321160,38sleep231777-21fschecks_time20:39:172
159221167,29sleep00-21swapper/019:04:220
159221167,29sleep00-21swapper/019:04:220
29122211516,82sleep029128-21ntp_states18:49:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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