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2026-08-25 - 15:50

OSADL QA Farm on Real-time of Mainline Linux

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

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
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rackfslot4s.osadl.org (updated Tue Aug 25, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1003121360,2sleep010033-21wc07:55:500
2819321270,3chrt28192-21seq09:17:020
2077121220,2chrt20773-21modprobe09:55:010
2036121190,2sleep020360-21seq08:12:280
2339521180,2chrt23387-21ps11:36:020
3238421150,3chrt32385-21cat11:00:580
2242121150,3chrt22408-21ntpq09:56:470
526321130,2chrt5265-21grep11:57:120
650621100,2chrt6507-21sleep10:21:360
3087421100,2chrt30875-21ssh11:46:480
1490921100,2chrt14910-21sleep12:11:400
567121090,2chrt5646-21ntpq09:31:520
2456721090,3chrt24568-21ssh10:00:350
1523721090,1sleep015238-21sh10:35:320
399221070,2chrt3993-21sleep10:17:520
2131821030,2chrt21319-21runrttasks10:44:350
1365921030,2chrt13660-21sleep08:54:570
232042990,2sleep023205-21chrt12:24:540
122632980,2sleep012264-21sh10:30:480
93812930,2sleep09382-21seq12:03:330
4552930,2sleep0456-21seq09:24:380
273522860,2sleep027353-21tune2fs12:30:520
142822860,2sleep014283-21seq08:55:340
188612850,4chrt16805-21/usr/sbin/munin12:17:260
1153628512,20sleep011540-21ntp_states07:06:240
215492810,2sleep021552-21aten2.4_rfpower08:15:220
108112800,1sleep010812-21rm11:16:500
26862790,2sleep02687-21chrt07:45:020
151912790,1sleep015192-21seq11:23:390
318062780,2sleep031810-21sed10:11:050
50202770,2sleep05021-21chrt11:08:100
291272770,2sleep029128-21seq11:44:540
196542770,2sleep019655-21df11:30:370
13185907515,51cyclictest28999-21ntpq10:06:410
1318590747,56cyclictest4563-21apt-get08:40:130
85072730,1sleep08509-21irqrtprio09:36:080
1318590735,59cyclictest1521-21ntpq11:51:300
1318590726,56cyclictest31792-21munin-run07:40:030
1318590726,56cyclictest28588-21sleep08:25:460
1318590716,55cyclictest10198-21apt-get12:05:270
1318590716,53cyclictest23457-21apt-get12:25:250
1318590716,53cyclictest15958-21apt-get11:25:260
1318590715,57cyclictest439-21sh09:26:290
1318590715,54cyclictest10920-21ssh09:40:160
1318590714,58cyclictest26557-21sed07:30:440
1318590713,55cyclictest7194-21ssh11:11:210
29062700,2sleep02907-21chrt07:45:220
1318590707,53cyclictest19565-21apt-get07:20:220
1318590707,43cyclictest17020-21ssh09:49:010
1318590706,44cyclictest23178-21hddtemp_smartct07:25:380
1318590705,55cyclictest16296-21ntpq08:05:540
1318590705,55cyclictest12213-21runrttasks08:00:190
1318590704,48cyclictest436-21runrttasks09:00:560
1318590704,46cyclictest8837-21df10:25:410
1318590697,52cyclictest1438-21apt-get08:35:180
1318590696,54cyclictest26250-21ntpq10:51:200
1318590696,53cyclictest24586-21apt-get08:20:110
1318590694,47cyclictest24817-21seq09:12:010
1318590694,46cyclictest22233-21ssh10:45:520
13185906916,46cyclictest1318-21latency_hist08:35:030
1318590686,53cyclictest29675-21ssh10:56:320
1318590686,53cyclictest21241-21ntpq09:06:030
1318590686,51cyclictest30077-21apt-get12:35:200
1318590684,44cyclictest9896-21sleep08:48:070
1318590676,50cyclictest5941-21apt-get07:50:140
1318590668,48cyclictest13360-21apt-get07:10:260
1318590663,45cyclictest16981-21idleruntime07:15:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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