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2026-04-25 - 16:12

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 all highest latencies:
System rack5slot7s.osadl.org (updated Sat Apr 25, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2255224452212,87sleep00-21swapper07:09:300
23579916512,111cyclictest12001-21grep08:05:550
23579916020,25cyclictest29428-21apt-get09:55:340
23579916018,115cyclictest17153-21diskstats11:55:400
23579916012,104cyclictest11260-21wc11:20:370
23579915618,112cyclictest13605-21apt-get11:35:170
23579915613,118cyclictest12498-21apt-get08:10:270
23579915611,123cyclictest29434-21http09:55:050
23579915611,121cyclictest21947-21sshd09:05:580
23579915610,123cyclictest17214-21awk08:36:000
23579915528,107cyclictest0-21swapper07:30:010
23579915525,30cyclictest0-21swapper09:30:000
23579915517,98cyclictest3260-21munin-node11:51:470
23579915511,28cyclictest23551-21mailstats09:15:580
23579915511,101cyclictest30585-21/usr/sbin/munin10:00:490
23579915418,35cyclictest10869-21munin-run11:20:020
23579915415,25cyclictest20959-21munin-run12:20:020
23579915415,25cyclictest10019-21users11:11:080
23579915415,115cyclictest3150-21munin-run07:15:030
23579915415,109cyclictest26624-21ntpq09:35:490
23579915414,115cyclictest14528-21memory08:20:460
23579915317,27cyclictest31379-21/usr/sbin/munin10:05:340
23579915312,120cyclictest19268-21grep12:06:010
23579915312,116cyclictest12784-21systemd-journal10:30:000
2357991529,118cyclictest1711-21grep10:20:530
23579915230,22cyclictest3613-21sshd10:31:210
23579915225,107cyclictest8569-21apt-get11:05:130
23579915216,24cyclictest11538-21munin-run08:05:020
23579915215,24cyclictest18391-21/usr/sbin/munin08:45:270
23579915214,22cyclictest15914-21munin-run11:50:010
23579915212,39cyclictest4836-21awk07:20:560
23579915118,110cyclictest24585-21users09:21:060
23579915115,24cyclictest23780-21ntp_states12:35:510
23579915112,58cyclictest21874-21/usr/sbin/munin12:25:230
2357991509,46cyclictest7309-21proc_pri10:55:530
23579915021,28cyclictest6265-21diskstats10:50:340
23579915019,26cyclictest4559-21apt-get10:40:170
23579915014,37cyclictest18190-21munin-plugin-st08:45:010
23579915011,116cyclictest9921-21munin-run07:55:020
23579914937,22cyclictest6010-21/usr/sbin/munin07:30:470
23579914912,98cyclictest21131-21find09:00:550
23579914912,23cyclictest272-21snmpd12:01:400
23579914911,26cyclictest6906-21expr07:35:250
23579914911,26cyclictest12329-21ntpq11:25:570
23579914910,116cyclictest8850-21zcat07:45:580
23579914839,22cyclictest838-21open_files10:15:520
23579914822,27cyclictest15990-21diskstats08:30:320
23579914819,28cyclictest20119-21memory08:55:450
23579914817,26cyclictest27379-21memory09:40:450
23579914817,25cyclictest25631-21diskstats09:30:320
23579914816,111cyclictest14163-21apt08:20:020
23579914812,23cyclictest8403-21sed11:01:030
23579914810,112cyclictest12810-21/usr/sbin/munin11:30:110
23579914719,27cyclictest32175-21apt-get10:10:170
23579914716,25cyclictest3853-21/usr/sbin/munin10:35:340
23579914716,109cyclictest28062-21fw_packets09:45:340
23579914714,25cyclictest14426-21apt-get11:40:200
23579914710,21cyclictest22792-21mailstats09:11:000
23579914620,101cyclictest19454-21apt-get12:10:200
23579914613,25cyclictest15184-21df08:25:270
23579914611,40cyclictest12784-21systemd-journal10:45:070
23579914611,114cyclictest12784-21systemd-journal08:00:010
2357991459,23cyclictest21343-21grep12:20:450
23579914511,40cyclictest3953-21/usr/sbin/munin07:16:110
23579914318,24cyclictest7634-21apt-get07:40:130
23579914315,103cyclictest22773-21df12:30:250
23579914312,27cyclictest272-21snmpd08:50:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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