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2025-11-09 - 10:58

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 highest latencies:
System rack5slot7s.osadl.org (updated Sun Nov 09, 2025 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20237224072162,57sleep00-21swapper19:08:440
204219916412,127cyclictest6023-21/usr/sbin/munin00:15:120
204219915816,115cyclictest771-21munin-run23:45:030
204219915813,28cyclictest31863-21snmpd23:38:300
204219915811,119cyclictest27684-21/usr/sbin/munin23:11:120
204219915713,103cyclictest29506-21uname23:20:410
204219915614,118cyclictest7926-21diskstats00:25:340
204219915613,26cyclictest29034-21readlink20:00:010
204219915611,120cyclictest22361-21apt19:20:010
204219915516,97cyclictest112-21systemd-journal23:05:000
204219915513,27cyclictest5235-21tr20:50:520
204219915511,118cyclictest27653-21ps19:50:560
204219915433,101cyclictest258-21in:imuxsock20:25:010
204219915336,96cyclictest25258-21latency_hist22:55:050
204219915317,112cyclictest12876-21munin-run21:40:020
204219915281,47cyclictest21322-21munin-node20:05:150
204219915223,21cyclictest0-21swapper00:30:590
204219915219,106cyclictest30817-21apt-get20:10:240
204219915218,35cyclictest22764-21munin-run22:40:020
204219915215,25cyclictest9053-21df_inode21:15:300
204219915215,22cyclictest20413-21wc22:25:040
204219915214,100cyclictest2524-21/usr/sbin/munin20:35:420
204219915211,26cyclictest10410-21grep21:21:030
204219915118,27cyclictest23593-21ntp_states19:25:540
204219915118,107cyclictest8264-21diskstats21:10:360
204219915116,112cyclictest18502-21apt-get22:15:420
204219915114,112cyclictest5257-21df00:10:290
204219915113,114cyclictest963-21apt-config23:45:160
204219915113,112cyclictest30784-21awk23:26:070
204219915112,114cyclictest112-21systemd-journal22:30:010
204219915111,117cyclictest28663-21uname23:15:410
204219915110,28cyclictest31863-21snmpd00:00:000
20421991509,120cyclictest7774-21grep21:05:560
20421991508,119cyclictest23646-21wc22:45:050
204219915032,19cyclictest0-21swapper23:05:120
204219915016,26cyclictest13093-21df21:40:260
204219915016,110cyclictest6439-21apt21:00:010
204219915014,95cyclictest31863-21snmpd20:31:030
204219915013,114cyclictest16091-21munin-run22:00:030
204219915013,111cyclictest7225-21cat00:20:470
204219915012,115cyclictest3858-21awk00:00:480
204219914934,22cyclictest14203-21awk21:45:540
204219914933,22cyclictest18031-21wc22:10:410
204219914919,104cyclictest935-21apt-get20:25:200
204219914916,22cyclictest11485-21diskstats21:30:320
204219914915,110cyclictest25512-21memory22:55:430
204219914913,94cyclictest32479-21munin-run20:20:030
204219914911,114cyclictest4560-21grep20:45:560
20421991488,116cyclictest20940-21find19:10:590
204219914831,81cyclictest0-21swapper22:35:000
204219914829,22cyclictest0-21swapper22:05:330
204219914814,23cyclictest3896-21ls20:41:020
204219914714,24cyclictest30908-21/usr/sbin/munin23:30:490
204219914714,108cyclictest10588-21egrep21:25:230
204219914612,94cyclictest24704-21grep19:31:070
204219914610,113cyclictest25576-21systemctl19:40:020
204219914539,85cyclictest6967-21processes21:00:540
204219914523,100cyclictest24377-21munin-run22:50:010
204219914515,26cyclictest22797-21/usr/sbin/munin19:20:530
204219914514,26cyclictest9819-21/usr/sbin/munin00:35:580
204219914513,106cyclictest29146-21/usr/sbin/munin20:00:130
204219914512,23cyclictest2074-21grep23:50:510
204219914512,22cyclictest26490-21/usr/sbin/munin19:45:120
204219914511,25cyclictest16560-21awk22:00:540
204219914410,111cyclictest14588-21apt-get21:50:140
204219914121,93cyclictest25809-21diskstats19:40:360
204219914115,23cyclictest4474-21diskstats00:05:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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