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2026-05-06 - 18:06

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 Wed May 06, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28080224352195,97sleep00-21swapper07:08:180
283159916241,23cyclictest3962-21latency_hist11:10:040
283159916218,28cyclictest8089-21df_inode08:20:460
283159916120,27cyclictest17291-21apt-get12:30:160
283159915914,22cyclictest14637-21apt-get12:15:130
283159915834,22cyclictest20042-21snmpd11:20:460
283159915820,115cyclictest12952-21munin-run08:50:040
283159915815,119cyclictest1740-21irqstats10:55:450
283159915743,21cyclictest2711-21latency_hist07:50:060
283159915715,25cyclictest549-21/usr/sbin/munin07:35:430
283159915715,122cyclictest4213-21apt-get08:00:560
283159915617,101cyclictest29123-21munin-node07:15:040
283159915524,32cyclictest13117-21apt-get08:50:310
283159915514,24cyclictest29164-21irqstats10:25:360
283159915512,42cyclictest23212-21grep09:50:450
28315991549,121cyclictest16489-21/usr/sbin/munin09:10:120
28315991549,120cyclictest13571-21grep12:06:010
283159915418,21cyclictest435-21apt-get10:51:380
283159915413,117cyclictest10616-21wc11:50:050
283159915412,26cyclictest29784-21/usr/sbin/munin10:30:120
283159915321,28cyclictest10403-21apt-get08:35:200
283159915317,21cyclictest15347-21apt-get12:21:150
283159915313,25cyclictest8071-21head11:31:030
283159915311,122cyclictest28616-21zcat10:21:030
283159915311,101cyclictest19335-21grep09:25:540
283159915222,35cyclictest0-21swapper10:45:460
283159915217,112cyclictest7666-21munin-run08:20:040
283159915213,99cyclictest12126-21apt12:00:000
283159915213,23cyclictest27054-21apt-get10:16:440
283159915212,118cyclictest32102-21munin-run10:45:000
283159915210,119cyclictest26539-21grep10:11:150
283159915117,25cyclictest11104-21apt-get08:41:050
283159915115,24cyclictest13939-21df12:10:240
283159915115,22cyclictest25232-21apt10:05:010
283159915115,112cyclictest4218-21munin-run08:00:020
283159915114,112cyclictest5486-21munin-run11:20:030
283159915113,115cyclictest16914-21grep12:26:040
283159915113,111cyclictest32562-21wc07:31:020
283159915111,116cyclictest30839-21missed_timers10:35:460
283159915110,115cyclictest3081-21sh11:05:010
283159915020,27cyclictest18742-21users12:36:060
283159915020,102cyclictest18121-21apt-get09:20:160
283159915017,23cyclictest14899-21/usr/sbin/munin09:00:360
283159915015,114cyclictest8925-21munin-run11:40:020
283159915010,41cyclictest19887-21uname09:30:400
283159915010,114cyclictest6234-21wc08:10:210
283159914923,27cyclictest20507-21apt-get09:35:210
283159914917,106cyclictest23715-21apt-get09:55:200
283159914916,111cyclictest21501-21irqstats09:40:370
283159914913,23cyclictest25899-21sort10:06:000
283159914913,115cyclictest29831-21tr07:16:040
283159914911,114cyclictest17706-21grep09:15:540
283159914813,26cyclictest2717-21/usr/sbin/munin07:50:490
283159914812,113cyclictest9625-21sort11:41:010
283159914811,41cyclictest30653-21sshd07:20:470
283159914732,22cyclictest10782-21if_eth011:50:360
283159914626,21cyclictest0-21swapper11:10:410
283159914618,25cyclictest31174-21apt-get07:25:170
283159914615,91cyclictest14782-21munin-run09:00:030
283159914615,107cyclictest1305-21irqstats07:40:390
283159914611,23cyclictest22736-21grep09:46:020
28315991459,32cyclictest8431-1kworker/u3:408:25:150
283159914518,103cyclictest15808-21diskstats09:05:350
283159914513,113cyclictest12617-21ps12:00:540
283159914414,29cyclictest5826-21mailstats08:06:060
283159914411,24cyclictest9606-21/usr/sbin/munin08:30:420
283159914411,104cyclictest6631-21/usr/sbin/munin11:25:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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