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2026-03-15 - 15:52

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #8

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: 50 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rack9slot8s.osadl.org (updated Sun Mar 15, 2026 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501890,0irq/46-4a10000022121-21kworker/0:107:06:200
249309911575,0cyclictest1763-21latency_hist12:15:040
249309910783,0cyclictest7761-21runrttasks08:45:210
249309910769,0cyclictest1268-21seq08:03:320
249309910574,0cyclictest20551-21ssh11:46:030
249309910566,0cyclictest22982-21ssh09:34:240
249309910565,0cyclictest27162-21kworker/u2:111:25:020
249309910382,0cyclictest12590-21ssh10:20:280
249309910279,0cyclictest29212-21ssh12:04:280
249309910263,0cyclictest11327-21diskmemload11:44:130
249309910180,0cyclictest15937-21ssh09:19:380
249309910180,0cyclictest1197-21ssh11:05:160
249309910166,0cyclictest4232-21sshd08:23:230
249309910083,0cyclictest25717-21ssh11:57:010
249309910082,0cyclictest9853-21apt-get10:15:340
249309910082,0cyclictest3162-21ssh10:00:440
249309910082,0cyclictest27971-21ssh09:44:530
249309910081,0cyclictest27440-21ssh10:52:170
249309910080,0cyclictest14212-21ssh11:32:480
249309910073,0cyclictest31561-21ssh09:52:220
249309910063,0cyclictest29962-21sshd07:40:220
249309910061,0cyclictest8681-21kworker/u2:008:55:020
24930999980,0cyclictest18341-21ssh10:32:530
24930999980,0cyclictest10431-21apt-get11:25:440
24930999979,0cyclictest8040-21ssh12:28:070
24930999978,0cyclictest4324-21ssh11:11:590
24930999977,0cyclictest19655-21ssh10:35:360
24930999969,0cyclictest12086-21snmpd12:36:520
24930999964,0cyclictest4967-21sshd08:28:220
24930999963,0cyclictest32513-21ssh12:11:180
24930999963,0cyclictest31006-21kworker/u2:407:55:000
24930999876,0cyclictest23477-21ssh09:35:150
24930999869,0cyclictest22914-21runrttasks11:51:030
24930999866,0cyclictest15269-21ssh10:26:140
24930999865,0cyclictest11290-21apt12:35:000
24930999861,0cyclictest25206-21kworker/u2:007:15:010
24930999781,0cyclictest6255-21ssh10:07:200
24930999777,0cyclictest31801-21ssh11:01:230
24930999777,0cyclictest30003-21ssh10:57:470
24930999777,0cyclictest1649-21ssh09:57:420
24930999775,0cyclictest30236-21ssh12:06:290
24930999679,0cyclictest12836-21ssh09:13:050
24930999678,0cyclictest7994-21ssh11:19:560
24930999677,0cyclictest16304-21ssh11:37:110
24930999675,0cyclictest5819-21ssh12:23:260
24930999675,0cyclictest29253-21ssh09:47:290
24930999666,0cyclictest12113-21runrttasks10:48:450
24930999664,0cyclictest19369-21kworker/u2:009:26:550
24930999580,0cyclictest30547-21apt-get07:45:230
24930999579,0cyclictest18220-21sshd09:24:230
24930999576,0cyclictest9753-21ssh10:14:490
24930999575,0cyclictest22073-21ssh10:40:440
24930999563,0cyclictest1-21systemd08:39:280
24930999478,0cyclictest3702-21awk08:20:010
24930999476,0cyclictest2948-21munin-run08:15:010
24930999471,0cyclictest11160-21seq09:08:530
24930999375,0cyclictest2212-21munin-run08:10:010
24930999373,0cyclictest500-21munin-run08:00:020
24930999371,0cyclictest25950-21ntp_states07:15:100
24930999274,0cyclictest7426-21munin-run08:45:020
24930999271,0cyclictest29819-21sendmail-msp07:40:020
24930999270,0cyclictest28320-21idleruntime-cro07:30:000
24930999174,0cyclictest29049-21apt07:35:010
24930999173,0cyclictest5927-21munin-run08:35:010
24930999073,0cyclictest27017-21seq07:20:330
24930999064,0cyclictest9830-21apt09:00:010
24930998969,0cyclictest12086-21snmpd09:01:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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