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2026-07-29 - 04:36

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 Wed Jul 29, 2026 00:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21404224422214,85sleep00-21swapper19:08:190
216389916413,125cyclictest1386-21apt-get23:41:510
216389916216,120cyclictest3173-21apt-get20:35:550
216389916014,27cyclictest29542-21/usr/sbin/munin23:16:290
216389915913,21cyclictest14676-21cut21:41:010
216389915813,25cyclictest21909-21irqstats19:10:430
216389915735,102cyclictest26791-21sh19:40:010
216389915712,25cyclictest27880-21/usr/sbin/munin23:05:240
216389915618,25cyclictest4326-21apt-get20:40:240
216389915617,115cyclictest9021-21munin-run21:10:010
216389915616,39cyclictest1686-21apt-get20:25:180
216389915616,24cyclictest29415-21diskstats19:55:310
216389915611,121cyclictest7976-21sed00:16:080
216389915515,25cyclictest6442-21apt00:10:010
216389915512,120cyclictest25439-21apt-get22:50:170
216389915510,120cyclictest15271-21ntpq21:45:480
216389915431,33cyclictest9594-21head00:26:060
216389915416,99cyclictest31393-21apt-get23:25:280
216389915416,116cyclictest3426-21df23:50:260
216389915414,25cyclictest23951-21grep19:20:460
216389915412,119cyclictest29103-21wc23:11:010
216389915410,26cyclictest15779-21/usr/sbin/munin21:50:240
216389915410,119cyclictest9019-21apt-get21:11:390
216389915410,119cyclictest17247-21vmstat21:56:100
216389915410,119cyclictest11737-21latency_hist21:25:040
21638991539,23cyclictest22459-21grep22:30:450
216389915322,28cyclictest5228-21diskstats20:45:360
216389915314,38cyclictest23709-21munin-run22:40:030
216389915314,23cyclictest687-21munin-node23:35:120
216389915311,28cyclictest23364-21cut19:16:160
216389915311,27cyclictest21883-21mailstats22:25:550
216389915219,107cyclictest6151-21memory20:50:460
216389915215,112cyclictest31037-21diskstats20:05:320
216389915212,39cyclictest30616-21cut20:00:570
216389915212,115cyclictest3104-21grep20:31:040
216389915211,28cyclictest20085-21grep22:15:510
216389915119,106cyclictest20617-21apt-get22:20:170
216389915112,30cyclictest13436-21snmpd22:58:400
216389915017,26cyclictest26915-21apt-get19:40:170
216389915012,22cyclictest13893-21sort21:36:000
216389915010,40cyclictest31239-21wc23:25:040
216389914921,27cyclictest27712-21apt-get19:45:230
216389914919,28cyclictest23831-21apt-get22:40:200
216389914918,26cyclictest10465-21munin-run00:35:020
216389914916,29cyclictest770-21munin-run20:20:020
216389914916,22cyclictest588-21apt23:35:010
216389914914,23cyclictest13345-21cat21:35:050
216389914914,23cyclictest11222-21/usr/sbin/munin00:36:050
216389914913,24cyclictest4229-21df_inode23:55:290
216389914911,112cyclictest6541-21/usr/sbin/munin00:11:080
216389914833,21cyclictest25565-21sshd19:30:460
216389914815,23cyclictest27781-21munin-run23:05:020
216389914813,25cyclictest6917-21sort20:55:430
216389914810,116cyclictest16581-21kworker/u2:522:10:130
216389914727,83cyclictest0-21swapper20:15:010
216389914716,104cyclictest999-21diskstats20:20:320
216389914713,23cyclictest17861-21cut22:00:580
216389914712,111cyclictest2648-21diskstats23:45:430
216389914623,21cyclictest0-21swapper19:25:230
216389914621,28cyclictest8873-21modprobe00:25:010
216389914620,27cyclictest28511-21apt-get19:50:220
216389914620,26cyclictest4948-21apt-get00:00:210
216389914514,23cyclictest24688-21cstates22:45:240
216389914511,26cyclictest10147-21/usr/sbin/munin21:15:140
216389914510,114cyclictest18881-21modprobe22:10:000
216389914415,26cyclictest7703-21irqstats21:00:380
216389914319,24cyclictest11884-21diskstats21:25:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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