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2026-08-15 - 23:00

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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: 100 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 rack4slot1s.osadl.org (updated Sat Aug 15, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
529821190,3chrt0-21swapper/207:59:102
529821190,3chrt0-21swapper/207:59:102
2862521180,3sleep20-21swapper/209:03:542
2862521180,3sleep20-21swapper/209:03:542
432421020,4sleep20-21swapper/209:24:042
432421020,4sleep20-21swapper/209:24:042
263932900,3sleep20-21swapper/210:24:022
42712840,2chrt0-21swapper/012:18:490
264602820,3sleep00-21swapper/011:49:100
264602820,3sleep00-21swapper/011:49:100
35712770,4sleep30-21swapper/310:49:043
35712770,4sleep30-21swapper/310:49:043
299542760,3sleep20-21swapper/210:33:552
299542760,3sleep20-21swapper/210:33:552
8622620,1sleep0171ktimers/007:49:030
6432580,3chrt0-21swapper/109:14:061
6432580,3chrt0-21swapper/109:14:061
178542580,3chrt0-21swapper/208:34:042
158022580,4chrt15804-21fschecks_count08:29:030
223252570,3sleep20-21swapper/211:39:032
223252570,3sleep20-21swapper/211:39:032
223252570,3sleep20-21swapper/211:39:032
108042570,3sleep20-21swapper/211:09:012
183012500,3chrt0-21swapper/011:29:000
300952420,3sleep30-21swapper/311:59:063
300952420,3sleep30-21swapper/311:59:063
108582410,3sleep20-21swapper/212:34:072
95542390,3sleep20-21swapper/212:29:122
95542390,3sleep20-21swapper/212:29:122
127822390,3sleep20-21swapper/211:14:032
317832370,2sleep30-21swapper/312:04:063
317832370,2sleep30-21swapper/312:04:063
301292360,1sleep00-21swapper/010:34:010
301292360,1sleep00-21swapper/010:34:010
20349993328,3cyclictest0-21swapper/110:23:501
20349993328,3cyclictest0-21swapper/110:23:501
20349993327,4cyclictest14116-21gltestperf08:24:041
20349993327,4cyclictest13516-21sendmail08:23:491
20349993327,4cyclictest13516-21sendmail08:23:491
20348993327,4cyclictest23138-21unixbench_multi11:39:130
20348993327,4cyclictest23138-21unixbench_multi11:39:130
20348993327,4cyclictest23138-21unixbench_multi11:39:130
20349993228,3cyclictest22894-21cron08:48:491
20349993228,3cyclictest22894-21cron08:48:491
20349993228,3cyclictest20338-21cyclictest12:29:121
20349993228,3cyclictest20338-21cyclictest12:29:121
20348993225,5cyclictest1545-21fschecks_time10:44:030
20348993225,5cyclictest1545-21fschecks_time10:44:030
20348993218,12cyclictest0-21swapper/009:49:030
20348993126,4cyclictest1346-21avahi-daemon10:54:120
20348993126,4cyclictest1346-21avahi-daemon10:54:120
69882300,2sleep20-21swapper/212:24:062
69882300,2sleep20-21swapper/212:24:062
60122300,4sleep30-21swapper/308:03:503
60122300,4sleep30-21swapper/308:03:503
20349993024,5cyclictest27959-21latency07:34:051
20349993024,5cyclictest27959-21latency07:34:051
20349993023,4cyclictest0-21swapper/109:24:021
20349993023,4cyclictest0-21swapper/109:24:021
20348993023,6cyclictest7688-21sshd08:06:170
20348993023,6cyclictest7688-21sshd08:06:170
20348993022,6cyclictest550-21cron12:33:500
20348993022,6cyclictest550-21cron12:33:500
193052300,2sleep119407-21/usr/sbin/munin10:04:081
20349992924,3cyclictest28491-21idleruntime-cro09:03:501
20349992924,3cyclictest28491-21idleruntime-cro09:03:501
20349992924,3cyclictest0-21swapper/111:23:501
20349992924,3cyclictest0-21swapper/111:23:501
20349992924,3cyclictest0-21swapper/111:23:501
20349992924,3cyclictest0-21swapper/109:13:501
20349992922,5cyclictest29736-21threads09:04:101
20349992922,5cyclictest29736-21threads09:04:101
20349992922,5cyclictest26470-21fschecks_count10:24:041
20349992922,5cyclictest25473-21kernelversion08:54:051
20348992922,5cyclictest7159-21fschecks_time10:59:020
20348992922,5cyclictest7159-21fschecks_time10:59:020
20348992922,5cyclictest7119-21needreboot12:24:080
20348992922,5cyclictest7119-21needreboot12:24:080
140352290,3sleep30-21swapper/308:24:043
20349992823,3cyclictest0-21swapper/111:58:501
20349992823,3cyclictest0-21swapper/111:58:501
20348992823,3cyclictest24003-21systemctl08:49:110
20348992823,3cyclictest11970-21needreboot09:44:100
20348992823,3cyclictest11970-21needreboot09:44:100
20348992822,5cyclictest32373-21kernelversion10:39:050
20348992822,5cyclictest32373-21kernelversion10:39:050
20348992820,6cyclictest10957-21cut11:09:020
20349992723,3cyclictest1662-21timerandwakeup07:49:121
20349992722,3cyclictest0-21swapper/107:29:031
20349992721,5cyclictest4541-21fschecks_time07:59:021
20349992721,5cyclictest4541-21fschecks_time07:59:021
20349992721,4cyclictest1642-21grep10:44:031
20349992721,4cyclictest1642-21grep10:44:031
20349992721,4cyclictest0-21swapper/112:18:491
20349992721,4cyclictest0-21swapper/110:14:101
20349992721,4cyclictest0-21swapper/109:34:091
20349992721,4cyclictest0-21swapper/109:34:091
20349992718,7cyclictest19582-21fschecks_time08:39:031
20349992718,7cyclictest19582-21fschecks_time08:39:031
20348992722,4cyclictest572-21cups-browsed11:14:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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