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2025-10-18 - 18:12

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 the 100 highest latencies:
System rack5slot7s.osadl.org (updated Sat Oct 18, 2025 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9369224272199,85sleep00-21swapper07:09:210
94879916818,124cyclictest21479-21munin-run11:40:050
94879916322,31cyclictest23532-21diskstats11:50:370
94879916230,22cyclictest13839-21apt-get07:36:420
94879916015,120cyclictest10469-21sort07:15:150
94879916011,123cyclictest4352-21apt-get09:56:080
94879915916,118cyclictest1946-21munin-run09:40:020
94879915816,100cyclictest21306-21apt08:20:010
94879915810,125cyclictest25504-21grep08:41:040
94879915716,102cyclictest21474-21apt-get11:41:360
94879915715,23cyclictest24921-21munin-run12:00:020
94879915539,95cyclictest10575-21missed_timers10:30:470
94879915511,25cyclictest24604-21cat08:36:020
94879915418,110cyclictest22629-21apt-get11:45:230
94879915416,114cyclictest18267-21munin-run11:20:020
94879915413,99cyclictest27040-21sort08:51:000
94879915317,97cyclictest31189-21munin-run09:20:020
94879915314,23cyclictest14513-21irqstats10:55:410
94879915314,114cyclictest8730-21/usr/sbin/munin10:20:370
94879915312,118cyclictest20026-21ls08:10:430
94879915310,119cyclictest11748-21sed10:36:060
9487991529,118cyclictest13454-21cat10:50:030
94879915219,29cyclictest16585-21apt-get07:50:230
94879915216,25cyclictest27573-21grep08:55:510
94879915216,114cyclictest22126-21apt-get08:26:030
94879915214,27cyclictest12942-21sshd07:26:040
94879915139,94cyclictest16685-21latency_hist11:10:030
94879915110,41cyclictest4286-21grep09:51:040
94879915110,116cyclictest19862-21sshd11:28:430
9487991509,102cyclictest3115-21ls09:45:460
94879915031,98cyclictest0-21swapper09:01:020
94879915016,31cyclictest30355-21sshd09:12:430
94879915016,110cyclictest336-21munin-run09:30:020
94879915013,46cyclictest29977-21diskstats12:30:330
94879915012,28cyclictest11992-21systemctl07:20:580
94879915010,99cyclictest29050-21wc12:25:030
94879914921,27cyclictest21673-21memory08:20:470
94879914914,25cyclictest29764-21cron12:30:000
94879914911,40cyclictest31730-21grep09:20:570
94879914821,27cyclictest23492-21memory08:30:570
94879914821,100cyclictest13654-21diskstats10:50:340
94879914817,109cyclictest6548-21memory10:05:460
94879914815,27cyclictest25840-21/usr/sbin/munin12:05:420
94879914815,109cyclictest15270-21df_inode11:00:330
94879914815,108cyclictest13461-21ntp_states07:30:520
94879914721,27cyclictest15791-21apt-get07:45:230
94879914719,28cyclictest18303-21df08:00:270
94879914714,24cyclictest16927-21irqstats11:10:430
94879914712,29cyclictest18559-21irqstats11:20:410
94879914712,23cyclictest26422-21cat08:50:040
94879914711,113cyclictest2809-21wc09:45:040
94879914710,113cyclictest30960-21/usr/sbin/munin12:36:020
94879914622,28cyclictest27609-21irqstats12:15:400
94879914620,101cyclictest20349-21/usr/sbin/munin11:30:560
94879914618,27cyclictest7900-21apt-get10:15:210
94879914618,26cyclictest25038-21/usr/sbin/munin12:00:340
94879914615,49cyclictest12574-21sed10:41:050
94879914612,23cyclictest26827-21uname12:10:420
94879914515,26cyclictest28994-21diskstats09:05:350
94879914515,25cyclictest17485-21df_inode07:55:310
94879914419,99cyclictest7102-21apt-get10:10:190
94879914413,26cyclictest299-21sshd09:31:370
94879914411,24cyclictest0-21swapper07:10:480
94879914333,88cyclictest19298-21tr08:05:510
94879914320,27cyclictest5753-21memory10:00:530
94879914316,102cyclictest9609-21cstates10:25:240
94879914211,112cyclictest14585-21kworker/u2:1707:40:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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