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2026-06-03 - 18:26

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 Jun 03, 2026 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22130224532202,88sleep00-21swapper07:09:570
221809916316,122cyclictest14247-21sort09:36:010
221809916115,26cyclictest26410-21apt-get10:56:340
221809916016,121cyclictest24344-21df_inode07:20:280
221809916015,120cyclictest5759-21irqstats12:05:370
221809915812,121cyclictest22897-21sed07:11:040
221809915718,114cyclictest6518-21df_inode08:50:500
221809915717,24cyclictest17398-21wc09:56:000
221809915715,120cyclictest24822-21apt10:45:010
221809915629,21cyclictest0-21swapper11:51:000
22180991559,122cyclictest20893-21cat10:20:060
221809915517,114cyclictest3245-21memory08:30:440
221809915516,24cyclictest32320-21munin-run11:30:000
221809915516,115cyclictest27695-21cat07:40:470
221809915515,26cyclictest1416-21apt-get08:20:140
221809915439,94cyclictest8109-21df12:20:270
221809915419,104cyclictest8853-21apt-get09:05:180
221809915418,112cyclictest30938-21diskstats11:20:310
221809915417,114cyclictest7284-21diskstats12:15:320
221809915416,114cyclictest6487-21df_inode12:10:300
221809915413,117cyclictest26418-21http10:55:050
22180991538,120cyclictest27256-21head07:36:040
221809915327,104cyclictest0-21swapper12:36:010
221809915322,28cyclictest30656-21apt-get08:00:200
221809915320,29cyclictest4862-21memory08:40:440
221809915319,30cyclictest1239-21users08:16:050
221809915318,109cyclictest16078-21apt-get09:50:150
221809915316,111cyclictest29039-21apt-get07:50:200
221809915314,117cyclictest4503-21munin-run08:40:020
221809915313,117cyclictest9221-21grep12:25:560
221809915310,24cyclictest23414-21diskstats10:35:300
221809915220,29cyclictest25037-21apt-get07:25:210
221809915216,113cyclictest23081-21diskstats07:15:110
221809915212,25cyclictest20042-21snmpd11:10:560
221809915212,115cyclictest18556-21wc10:05:230
221809915121,28cyclictest14592-21df_inode09:40:280
221809915119,104cyclictest28362-21apt-get11:05:170
221809915114,23cyclictest10442-21apt-get09:15:140
221809915112,22cyclictest868-21diskstats11:35:300
221809915112,116cyclictest12772-21munin-run09:30:010
22180991509,38cyclictest23190-21cron10:35:000
221809915072,54cyclictest30705-21apt11:20:010
221809915021,27cyclictest11278-21apt-get09:20:160
221809915016,111cyclictest1682-21df11:40:240
221809915013,26cyclictest5075-21grep12:00:470
221809915013,26cyclictest32419-21irqstats08:10:390
221809915012,115cyclictest4693-21modprobe12:00:040
221809914940,19cyclictest31854-21processes08:05:560
221809914929,99cyclictest2210-21apt-get08:25:140
221809914921,27cyclictest30490-21users07:56:070
221809914913,25cyclictest20042-21snmpd08:55:180
221809914911,24cyclictest22325-21head10:26:020
221809914817,93cyclictest32528-21diskstats11:30:310
221809914817,25cyclictest19284-21apt-get10:10:170
221809914817,106cyclictest8164-21df_inode09:00:300
221809914815,25cyclictest15331-21/usr/sbin/munin09:45:210
221809914815,110cyclictest20042-21snmpd09:30:500
221809914814,105cyclictest5723-21ntpq08:45:500
221809914813,113cyclictest18116-21grep10:00:550
221809914720,24cyclictest25034-21diskstats10:45:320
221809914711,114cyclictest10020-21grep12:30:550
221809914617,20cyclictest27568-21apt-get11:00:150
221809914611,37cyclictest25894-21/usr/sbin/munin07:30:230
221809914518,25cyclictest20910-21/usr/sbin/munin10:21:080
221809914515,107cyclictest2380-21apt-get11:45:130
221809914416,21cyclictest28240-21/usr/sbin/munin07:45:470
221809914312,26cyclictest9644-21/usr/sbin/munin09:10:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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