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2026-06-12 - 21:20

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50.5 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 376 highest latencies:
System rack5slot7s.osadl.org (updated Fri Jun 12, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25832224472196,90sleep00-21swapper07:08:060
260889916116,121cyclictest12217-21apt-get12:15:240
260889916013,124cyclictest8586-21apt-get11:55:270
260889915921,22cyclictest10728-21apt-get08:51:270
260889915917,23cyclictest30187-21memory07:31:250
260889915916,25cyclictest11087-21apt-get12:11:030
260889915914,121cyclictest5194-21munin-run11:35:010
260889915716,24cyclictest27194-21df_inode10:30:260
260889915711,44cyclictest15664-21apt-get12:35:250
260889915618,97cyclictest5997-21munin-run11:40:010
260889915611,28cyclictest2119-21wc07:55:510
260889915511,120cyclictest2785-21latency_hist11:20:010
260889915511,119cyclictest10985-21cat12:06:010
260889915422,29cyclictest30413-21diskstats10:50:330
260889915418,29cyclictest3022-21diskstats11:20:350
260889915418,24cyclictest9699-21apt-get08:46:160
260889915415,115cyclictest25497-21apt-get10:20:110
260889915411,120cyclictest20108-21memory09:45:430
260889915411,118cyclictest30996-21apt-get10:56:480
260889915338,23cyclictest14646-21processes09:10:550
260889915338,20cyclictest22974-21munin-run10:05:020
260889915318,107cyclictest15144-21diskstats09:15:330
260889915316,37cyclictest7166-21cat08:26:050
260889915315,98cyclictest28362-21sort07:20:410
260889915315,21cyclictest17552-21df09:30:260
260889915314,117cyclictest3144-21sort08:01:020
260889915314,111cyclictest32150-21apt-get11:00:250
260889915312,118cyclictest14257-21zcat12:25:550
260889915311,116cyclictest16537-21sshd09:21:260
260889915216,111cyclictest22160-21munin-run10:00:020
260889915215,114cyclictest14691-21apt-get12:30:250
260889915212,115cyclictest29633-21/usr/sbin/munin10:45:340
260889915210,117cyclictest5654-21cron08:20:010
260889915116,25cyclictest26284-21df07:10:260
260889915116,23cyclictest29644-21munin-run07:30:010
260889915116,110cyclictest18247-21/usr/sbin/munin09:35:340
260889915116,108cyclictest31597-21apt-get07:40:190
260889915115,37cyclictest28588-21apt10:40:020
260889915115,35cyclictest31188-21awk07:36:110
260889915115,114cyclictest829-21users07:47:090
260889915114,112cyclictest16759-21df09:25:260
260889915112,114cyclictest13116-21mailstats09:01:020
260889915111,116cyclictest20665-21kworker/u2:510:20:010
260889915111,115cyclictest7206-21tr11:45:480
260889915018,106cyclictest4168-21apt-get08:10:180
260889915017,106cyclictest6117-21apt-get11:40:180
260889915010,118cyclictest7774-21wc11:50:220
26088991499,117cyclictest24154-21tr10:10:450
260889914920,25cyclictest4030-21users08:06:110
260889914915,26cyclictest28709-21/usr/sbin/munin10:40:580
260889914915,23cyclictest19245-21irqstats09:40:390
260889914915,111cyclictest9323-21ntp_states08:40:520
260889914915,111cyclictest8283-21df08:35:250
26088991489,23cyclictest12034-21grep08:55:480
260889914820,29cyclictest1383-21df11:10:260
260889914818,26cyclictest9603-21apt-get12:00:230
260889914813,112cyclictest20911-21grep09:50:480
26088991479,115cyclictest8739-21snmpd12:24:080
260889914731,18cyclictest0-21swapper09:05:240
260889914614,25cyclictest585-21df11:05:230
260889914610,26cyclictest30275-21kworker/u2:1307:50:200
26088991459,27cyclictest3767-21cstates11:25:210
260889914516,25cyclictest27110-21diskstats07:15:200
260889914412,108cyclictest23797-21wc10:10:030
260889914411,48cyclictest5909-21diskstats08:20:330
260889914333,19cyclictest26397-21df10:25:260
260889914217,25cyclictest8083-21munin-run08:35:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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