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2025-08-29 - 12:04

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 100 highest latencies:
System rack5slot7s.osadl.org (updated Fri Aug 29, 2025 00:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3917224482198,97sleep00-21swapper19:07:550
4200991629,125cyclictest14494-21apt-get23:26:450
42009916112,123cyclictest19526-21modprobe23:55:000
42009915922,29cyclictest26029-21apt-get00:30:320
42009915915,25cyclictest15737-21diskstats23:30:400
42009915816,100cyclictest2749-21/usr/sbin/munin22:15:050
42009915812,121cyclictest26889-21apt-get00:35:450
42009915812,121cyclictest19802-21latency_hist20:40:060
42009915716,98cyclictest3794-21munin-run22:20:030
42009915712,120cyclictest12486-21grep23:11:020
42009915632,21cyclictest13945-21if_eth023:20:460
42009915618,97cyclictest21793-21df_inode00:05:540
42009915613,28cyclictest13303-21grep23:16:380
42009915611,27cyclictest32090-21/usr/sbin/munin21:55:370
42009915535,21cyclictest27692-21unixbench_singl21:26:100
42009915515,117cyclictest20572-21munin-run00:00:030
42009915513,118cyclictest7188-21apt-get19:26:150
42009915511,119cyclictest10621-21cron19:45:010
42009915417,25cyclictest4177-21apt-get19:10:360
42009915417,25cyclictest23206-21apt-get00:16:040
42009915415,23cyclictest11242-21df23:05:270
42009915415,114cyclictest16424-21apt-get23:35:200
42009915412,119cyclictest17035-21wc20:21:060
42009915317,23cyclictest8899-21irqstats22:50:410
42009915315,24cyclictest20801-21diskstats00:00:380
42009915222,104cyclictest26260-21apt-get21:20:220
42009915215,97cyclictest6375-21munin-run19:20:020
42009915215,114cyclictest17942-21apt23:45:020
42009915215,113cyclictest30963-21munin-run21:50:020
42009915213,24cyclictest12229-21apt-get19:56:250
42009915212,112cyclictest10224-21munin-run23:00:030
42009915210,23cyclictest25589-21wc00:25:580
42009915125,106cyclictest1251-21apt-get22:05:160
42009915121,27cyclictest5622-21diskstats22:30:390
42009915119,22cyclictest25426-21apt-get21:15:220
42009915118,24cyclictest6495-21apt-get19:20:210
42009915117,27cyclictest23167-21users00:11:130
42009915115,36cyclictest4016-21df_inode22:20:420
42009915112,24cyclictest7130-21/usr/sbin/munin22:40:120
42009915112,116cyclictest29467-21/usr/sbin/munin21:40:400
42009915110,27cyclictest6988-21sshd22:39:390
42009915110,100cyclictest22052-21grep20:51:040
42009915016,112cyclictest15148-21irqstats20:10:400
42009915013,115cyclictest31210-21apt-get21:50:240
42009915013,112cyclictest22678-21awk20:55:570
42009915012,114cyclictest11824-21ntpq19:50:510
42009915010,115cyclictest5407-21munin-plugin-st22:30:010
4200991499,116cyclictest13808-21find20:01:050
42009914972,52cyclictest10712-21grep23:00:540
42009914914,108cyclictest23035-21apt-get21:00:190
42009914912,115cyclictest28162-21ntp_states21:30:580
42009914817,104cyclictest15772-21apt-get20:15:140
42009914812,24cyclictest8555-21grep22:46:050
4200991479,117cyclictest24139-21grep21:05:530
42009914727,22cyclictest0-21swapper20:30:270
42009914727,21cyclictest0-21swapper00:25:000
42009914717,24cyclictest19817-21/usr/sbin/munin20:41:060
42009914717,106cyclictest455-21apt-get22:00:140
42009914713,26cyclictest8318-21/usr/sbin/munin19:30:450
42009914713,111cyclictest24738-21diskstats21:10:340
42009914712,35cyclictest20880-21grep20:45:470
42009914712,27cyclictest14179-21/usr/sbin/munin20:05:140
42009914618,27cyclictest29300-21users21:36:130
42009914613,110cyclictest17516-21/usr/sbin/munin20:25:350
42009914610,112cyclictest11278-21timerandwakeup19:46:030
42009914515,28cyclictest9287-21irqstats19:35:420
42009914415,105cyclictest18377-21/usr/sbin/munin23:45:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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