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2026-05-02 - 09:38

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 the 376 highest latencies:
System rackfslot4s.osadl.org (updated Sat May 02, 2026 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1988521320,2sleep019887-21missed_timers23:51:140
2758621200,3chrt27587-21runrttasks23:14:490
609621190,3chrt6097-21runrttasks00:20:020
2045021180,2chrt20448-21ssh21:26:440
2418021170,2chrt24181-21ssh23:57:390
909621160,3chrt9099-21aten2.4_rfpower21:10:330
2193721160,2chrt21938-21/usr/sbin/munin19:46:080
1538321160,2sleep015384-21seq00:33:250
1467621160,2chrt14677-21runrttasks23:43:450
555621140,2chrt5557-21chrt19:20:260
874021130,2chrt8742-21ssh21:10:010
1364121120,3chrt13642-21sleep20:25:520
2077521110,3chrt20776-21seq23:04:240
2972221100,2sleep029721-21seq22:29:150
1056521080,2chrt10566-21grep23:37:140
1611621070,3chrt16118-21grep19:36:260
780721050,2chrt7811-21latency_hist22:45:050
704121050,1sleep07042-21/usr/sbin/munin21:55:340
1429221040,3chrt14294-21sh22:54:500
2675521020,2sleep026756-21chrt22:25:030
1944521020,2chrt19446-21sh22:13:590
1033821010,2sleep010339-21seq22:48:190
188142990,1sleep018816-21idleruntime-cro21:25:000
323292970,1sleep032330-21hostname00:10:340
58542920,1sleep05855-21seq21:53:190
172262870,2sleep017230-21sed20:30:420
121072850,2sleep012108-21chrt19:30:410
2887828410,20sleep028934-21grep19:05:320
163042810,1sleep016306-21cut23:46:030
13002810,2sleep01301-21readlink22:35:170
79722800,1sleep07973-21chrt23:33:400
207442790,2sleep020747-21grep22:15:540
31309907815,56cyclictest12389-21ssh21:15:310
31309907713,56cyclictest28749-21/usr/sbin/munin00:06:230
125582770,1sleep012559-21seq22:03:230
3130990767,12cyclictest17126-21ssh00:36:210
3130990756,11cyclictest27318-21ntp_states21:37:050
3130990755,60cyclictest412-21snmpd20:53:330
3130990754,60cyclictest29459-21df21:40:360
3130990745,58cyclictest775-21ssh23:22:250
3130990736,12cyclictest32489-21apt-get21:45:270
3130990736,10cyclictest11526-21grep20:21:230
3130990735,11cyclictest6914-21ssh00:20:590
3130990735,11cyclictest3701-21ntp_states23:27:050
3130990735,10cyclictest23082-21df20:40:340
3130990734,49cyclictest27929-21ssh23:15:190
3130990734,11cyclictest2695-21apt-get21:00:160
31309907312,52cyclictest31430-21ld20:01:210
3130990726,9cyclictest31038-21/usr/sbin/munin22:31:010
3130990725,57cyclictest26047-21sleep00:00:560
3130990724,11cyclictest23025-21hddtemp_smartct21:31:010
3130990724,11cyclictest19283-21users19:41:280
261612720,2sleep026162-21df20:45:290
15842720,1sleep01589-21irqrtprio20:05:440
3130990715,11cyclictest3339-21ntpq19:16:110
3130990715,10cyclictest838-21ntpq20:56:140
3130990714,57cyclictest27038-21seq19:55:220
3130990714,11cyclictest25016-21ntpq19:51:040
3130990714,10cyclictest9990-21df_inode00:25:410
3130990714,10cyclictest4784-21load20:10:460
31309907113,49cyclictest32136-21irqrtprio19:10:440
31309907113,10cyclictest6926-21/usr/sbin/munin20:15:400
3130990705,12cyclictest14578-21apt-get22:55:210
3130990704,56cyclictest22991-21ssh23:07:140
3130990704,56cyclictest13914-21ssh22:05:520
3130990696,54cyclictest8457-21telnet19:25:220
3130990695,54cyclictest19948-21diskstats20:35:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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