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2025-05-09 - 07:26

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 May 09, 2025 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9753224322203,103sleep00-21swapper19:09:390
98359916411,127cyclictest32247-21apt-get21:26:320
98359916322,44cyclictest1776-21apt-get21:35:250
98359916017,118cyclictest22884-21apt-get23:46:570
98359915919,114cyclictest9041-21munin-run22:20:020
98359915815,115cyclictest28876-21apt-get00:20:260
98359915711,123cyclictest14203-1kworker/u3:119:36:400
98359915710,25cyclictest5821-21latency_hist22:00:000
9835991569,123cyclictest30838-21diskstats21:15:330
98359915624,112cyclictest12685-21apt-get19:25:160
98359915511,118cyclictest13776-21grep19:30:490
98359915415,115cyclictest25498-21munin-run00:00:000
98359915415,115cyclictest25259-21diskstats20:40:330
98359915414,26cyclictest28348-21/usr/sbin/munin21:01:140
98359915411,118cyclictest3845-21awk21:45:490
98359915320,26cyclictest28308-21ntp_states00:15:540
98359915317,98cyclictest13058-21munin-run22:45:010
98359915316,24cyclictest24118-21diskstats23:50:380
98359915314,97cyclictest10041-21diskstats19:10:330
98359915314,116cyclictest22884-21apt-get23:45:040
98359915313,116cyclictest18641-21apt23:20:010
98359915313,115cyclictest22598-21apt-get20:25:330
98359915231,20cyclictest25026-21run-parts20:40:020
98359915225,21cyclictest32059-21head00:36:040
98359915215,115cyclictest20448-21apt-get23:30:330
98359915214,23cyclictest15442-21munin-run23:00:010
98359915214,115cyclictest13848-21latency_hist22:50:010
98359915213,99cyclictest17591-21apt19:55:010
98359915212,117cyclictest18396-21munin-run20:00:020
98359915133,97cyclictest268-21snmpd19:16:180
98359915119,29cyclictest25731-21diskstats00:00:380
98359915119,105cyclictest11892-21apt-get19:20:190
98359915114,27cyclictest22444-21latency_hist20:25:060
98359915113,100cyclictest30628-21munin-run21:15:020
9835991509,99cyclictest20343-21latency_hist23:30:080
98359915019,25cyclictest10855-21df_inode22:30:280
98359915014,110cyclictest16641-21awk23:05:480
98359915012,25cyclictest26659-21grep00:05:450
98359915011,115cyclictest14820-21kworker/u2:420:30:170
98359915010,26cyclictest8239-21sort22:15:040
98359914916,22cyclictest0-21swapper21:25:050
98359914911,40cyclictest19414-21grep23:21:070
98359914876,50cyclictest27428-21munin-run20:55:010
98359914833,23cyclictest1493-21timerwakeupswit21:31:100
98359914814,95cyclictest29938-21df00:25:320
98359914814,26cyclictest4438-21df_inode21:50:310
98359914812,23cyclictest19610-21ntp_kernel_pll_20:05:490
98359914812,114cyclictest27620-21zcat00:10:580
98359914810,115cyclictest22062-21modprobe23:40:010
98359914810,115cyclictest10387-21find22:25:580
98359914718,27cyclictest29145-21apt-get21:05:190
98359914713,94cyclictest14371-21find22:50:560
98359914712,114cyclictest2754-21apt-get21:40:180
98359914710,115cyclictest17720-21cat23:11:020
98359914620,99cyclictest30632-21apt-get00:30:210
98359914612,109cyclictest18513-21/usr/sbin/munin20:01:020
9835991459,27cyclictest6622-21sshd22:01:340
98359914522,19cyclictest14837-21kworker/u2:1619:40:130
98359914512,107cyclictest16209-21sh19:45:260
98359914510,23cyclictest16125-21sort23:01:010
98359914419,101cyclictest9270-21diskstats22:20:320
98359914416,26cyclictest28186-21users20:56:070
98359914416,24cyclictest20100-21/usr/sbin/munin20:10:140
98359914410,108cyclictest25941-21apt-get20:45:160
9835991439,108cyclictest11854-21/usr/sbin/munin22:35:500
98359914326,20cyclictest7499-21wc22:10:040
98359914315,23cyclictest20893-21apt-get20:15:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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