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2026-05-30 - 13:29

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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 rack4slot1s.osadl.org (updated Sat May 30, 2026 00:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
345621230,2sleep20-21swapper/222:57:492
345621230,2sleep20-21swapper/222:57:492
1210121120,3sleep20-21swapper/220:27:462
1210121120,3sleep20-21swapper/220:27:462
26442990,4sleep20-21swapper/220:02:412
26442990,4sleep20-21swapper/220:02:412
144082980,3sleep20-21swapper/221:57:592
292082810,1chrt27708-40mandb00:03:241
292082810,1chrt27708-40mandb00:03:241
30162650,3sleep20-21swapper/220:02:502
30162650,3sleep20-21swapper/220:02:502
73962600,3sleep20-21swapper/220:12:592
54782580,2chrt5475-21df23:02:501
54782580,2chrt5475-21df23:02:501
54782580,2chrt5475-21df23:02:501
124112570,4chrt12413-21wc21:52:580
124112570,4chrt12413-21wc21:52:580
252422500,3sleep20-21swapper/223:53:002
252422500,3sleep20-21swapper/223:53:002
208922480,1sleep00-21swapper/022:17:470
208922480,1sleep00-21swapper/022:17:470
229962450,2sleep00-21swapper/019:27:580
229962450,2sleep00-21swapper/019:27:580
66832440,3sleep20-21swapper/200:32:482
66832440,3sleep20-21swapper/200:32:482
228682440,3sleep20-21swapper/219:27:572
228682440,3sleep20-21swapper/219:27:572
76892410,1sleep00-21swapper/021:42:410
76892410,1sleep00-21swapper/021:42:410
79712400,3sleep016960-21cyclictest00:33:020
79712400,3sleep016960-21cyclictest00:33:020
66482400,3sleep30-21swapper/321:37:583
66482400,3sleep30-21swapper/321:37:583
1697399391,28cyclictest27794-21chrt00:02:452
1697399391,28cyclictest27794-21chrt00:02:452
1697399391,28cyclictest27794-21chrt00:02:452
79372380,3sleep20-21swapper/221:42:512
79372380,3sleep20-21swapper/221:42:512
16968993629,5cyclictest16648-21cpu23:32:490
16968993629,5cyclictest16648-21cpu23:32:490
16968993629,5cyclictest16648-21cpu23:32:490
16968993629,4cyclictest28249-21gltestperf00:02:530
16968993629,4cyclictest28249-21gltestperf00:02:530
196082350,2sleep119709-21memory22:12:541
196082350,2sleep119709-21memory22:12:541
16971993530,3cyclictest4950-21grep20:07:531
16971993530,3cyclictest4950-21grep20:07:531
16971993530,3cyclictest4950-21grep20:07:531
16968993529,5cyclictest26183-21gltestperf19:37:520
16968993529,5cyclictest26183-21gltestperf19:37:520
233202340,3sleep0171ktimers/022:22:530
233202340,3sleep0171ktimers/022:22:530
187412340,2sleep118878-21timerandwakeup20:43:021
187412340,2sleep118878-21timerandwakeup20:43:021
187412340,2sleep118878-21timerandwakeup20:43:021
16968993328,3cyclictest5924-21timerwakeupswit00:28:030
16968993328,3cyclictest5924-21timerwakeupswit00:28:030
16968993328,3cyclictest15144-21cron22:02:390
1697599321,24cyclictest27802-21chrt00:02:463
1697599321,24cyclictest27802-21chrt00:02:463
1697599321,24cyclictest27802-21chrt00:02:463
16971993227,4cyclictest547-21rs:main1
16971993227,4cyclictest547-21rs:main1
16971993227,4cyclictest547-21rs:main1
16968993224,6cyclictest32393-21fschecks_time22:47:510
16968993224,6cyclictest32393-21fschecks_time22:47:510
240082310,3sleep116960-21cyclictest23:52:431
240082310,3sleep116960-21cyclictest23:52:431
16971993125,5cyclictest18683-21fschecks_count23:37:521
16971993125,4cyclictest9695-21latency_hist21:47:491
16971993125,4cyclictest9695-21latency_hist21:47:491
16968993126,4cyclictest9670-21kernelversion23:12:530
16968993126,4cyclictest9670-21kernelversion23:12:530
16968993125,5cyclictest1764-21netstat00:17:560
16968993125,5cyclictest1764-21netstat00:17:560
16971993025,4cyclictest10094-21gltestperf21:47:541
16971993025,4cyclictest10094-21gltestperf21:47:541
16971993025,3cyclictest22856-21ntp_kernel_err19:27:561
16971993025,3cyclictest22856-21ntp_kernel_err19:27:561
16971993023,5cyclictest26870-21sshd19:38:011
16971993023,5cyclictest26870-21sshd19:38:011
16971993023,4cyclictest0-21swapper/100:22:501
16971993023,4cyclictest0-21swapper/100:22:501
16968993026,3cyclictest17172-21kernelversion23:32:530
16968993026,3cyclictest17172-21kernelversion23:32:530
16968993026,3cyclictest17172-21kernelversion23:32:530
16968993025,4cyclictest1346-21avahi-daemon23:52:590
16968993025,4cyclictest1346-21avahi-daemon23:52:590
16968993024,4cyclictest0-21swapper/023:43:010
16968993024,4cyclictest0-21swapper/023:43:010
16968993024,4cyclictest0-21swapper/023:43:010
16968993023,5cyclictest29966-21sshd22:41:010
16968993023,5cyclictest29966-21sshd22:41:010
16968993023,5cyclictest28674-21sshd21:11:010
16968993023,5cyclictest28674-21sshd21:11:010
16968993022,6cyclictest0-21swapper/000:02:450
16968993022,6cyclictest0-21swapper/000:02:450
16968993022,6cyclictest0-21swapper/000:02:450
16971992925,3cyclictest5966-21latency23:02:541
16971992925,3cyclictest5966-21latency23:02:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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