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2026-05-15 - 03:52

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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.
Unexpectedly long latencies may be caused by SMIs
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 rack5slot3s.osadl.org (updated Fri May 15, 2026 00:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
195212230163,54sleep30-21swapper/319:06:513
194432226149,24sleep20-21swapper/219:05:502
194302203166,25sleep00-21swapper/019:05:400
195942201165,24sleep10-21swapper/119:07:461
2644721860,4sleep31986699cyclictest21:50:123
19860999390,2cyclictest0-21swapper/200:16:232
19860999281,3cyclictest0-21swapper/200:27:372
286422680,4sleep1808-21snmpd20:40:161
11752560,3sleep00-21swapper/022:05:150
19860993611,3cyclictest7821-21/usr/sbin/munin23:35:222
19866993527,3cyclictest0-21swapper/320:36:393
1986699351,20cyclictest0-21swapper/320:26:343
19860993512,20cyclictest9404-21/usr/sbin/munin22:25:102
1985199358,13cyclictest3547-21munin-run19:45:020
136422350,5sleep31986699cyclictest21:20:153
19860993412,19cyclictest14760-21/usr/sbin/munin20:10:152
1986099341,19cyclictest0-21swapper/220:26:532
19860993411,20cyclictest7203-21/usr/sbin/munin22:20:212
19860993411,20cyclictest27339-21/usr/sbin/munin19:25:202
19860993410,5cyclictest0-21swapper/222:15:192
1986699331,22cyclictest0-21swapper/321:46:183
1986699331,21cyclictest0-21swapper/320:14:543
1986099339,4cyclictest15719-21/usr/sbin/munin23:50:252
1986099331,5cyclictest808-21snmpd21:35:252
19860993311,3cyclictest12568-21/usr/sbin/munin20:05:262
19860993310,3cyclictest5621-21/usr/sbin/munin23:30:262
19866993214,8cyclictest0-21swapper/319:52:303
1986699321,21cyclictest0-21swapper/320:18:143
1986699321,21cyclictest0-21swapper/320:05:423
1986699321,19cyclictest0-21swapper/300:13:473
1986699321,14cyclictest0-21swapper/322:27:233
1986699321,13cyclictest0-21swapper/320:55:233
1986699321,11cyclictest9136-21diskstats21:10:153
1986099326,4cyclictest10865-21/usr/sbin/munin23:40:192
1986099321,6cyclictest4584-21sshd22:12:372
19860993212,17cyclictest21036-21/usr/sbin/munin00:05:232
1986099321,14cyclictest0-21swapper/221:15:132
1986099321,11cyclictest10337-21unixbench_singl21:10:272
19860993211,18cyclictest1868-21/usr/sbin/munin00:35:182
19860993210,3cyclictest1207-21/usr/sbin/munin23:20:252
19860993210,2cyclictest31442-21hddtemp_smartct22:00:162
1986699319,9cyclictest0-21swapper/319:25:313
19866993117,4cyclictest0-21swapper/320:04:103
19866993116,10cyclictest0-21swapper/321:19:153
1986699311,24cyclictest0-21swapper/320:49:593
1986699311,14cyclictest0-21swapper/300:27:483
1986699311,12cyclictest0-21swapper/323:50:063
1986699311,12cyclictest0-21swapper/322:24:073
1986699311,12cyclictest0-21swapper/321:28:553
1986699311,12cyclictest0-21swapper/321:28:553
1986099312,10cyclictest20874-1kworker/2:2H00:03:332
1986099311,6cyclictest0-21swapper/223:15:112
1986099311,13cyclictest0-21swapper/221:49:452
19860993110,3cyclictest2805-21grep20:55:162
19860993110,3cyclictest22156-21cstates21:40:112
19860993110,3cyclictest15377-21/usr/sbin/munin21:25:182
19860993110,3cyclictest15377-21/usr/sbin/munin21:25:182
1985199318,11cyclictest32767-21perf22:05:020
1985199313,13cyclictest4796-21awk22:15:000
1986699308,14cyclictest0-21swapper/321:55:303
19866993017,3cyclictest0-21swapper/320:23:423
1986699301,26cyclictest18870-21hddtemp_smartct22:45:173
1986699301,18cyclictest0-21swapper/323:08:593
1986699301,13cyclictest0-21swapper/323:49:063
1986699301,13cyclictest0-21swapper/323:36:343
1986699301,11cyclictest0-21swapper/320:34:123
1986099308,3cyclictest10359-21/usr/sbin/munin20:00:212
1986099308,2cyclictest4270-21latency23:25:192
1986099308,2cyclictest16957-21/usr/sbin/munin20:15:112
1986099306,3cyclictest18837-21smart_sda21:30:242
1986099305,4cyclictest0-21swapper/223:45:262
1986099303,5cyclictest30796-21smart_sda19:30:222
1986099303,2cyclictest87550irq/128-enp1s0-00:30:192
1986099302,17cyclictest4527-1kworker/2:1H23:01:412
1986099301,6cyclictest18651-21cat00:00:012
1986099301,11cyclictest0-21swapper/219:57:332
19860993011,16cyclictest1620-21cpu19:40:112
1986099300,4cyclictest0-21swapper/222:30:122
1986099300,20cyclictest0-21swapper/220:51:532
19866992918,3cyclictest0-21swapper/319:14:073
19866992916,3cyclictest0-21swapper/320:41:593
1986699291,19cyclictest0-21swapper/319:39:113
1986699291,13cyclictest0-21swapper/323:03:393
1986699291,12cyclictest0-21swapper/300:19:313
1986699291,11cyclictest0-21swapper/322:01:183
1986099299,3cyclictest13470-21expr21:20:132
1986099298,3cyclictest21166-21if_err_enp1s022:50:182
1986099298,2cyclictest23558-21/usr/sbin/munin20:30:202
1986099296,4cyclictest30460-21/usr/sbin/munin23:10:262
1986099296,4cyclictest28868-21grep00:20:232
19860992913,3cyclictest18046-21latency_hist22:45:012
19860992913,3cyclictest18046-21latency_hist22:45:012
1986099291,2cyclictest0-21swapper/220:35:182
19860992911,3cyclictest6533-21cut21:05:012
1986099291,13cyclictest0-21swapper/222:05:372
1986099291,12cyclictest29829-21kworker/u8:119:48:582
1986099291,12cyclictest0-21swapper/220:48:052
19860992911,15cyclictest25048-21cut19:20:022
19860992910,3cyclictest29096-21grep20:40:222
1985199291,13cyclictest19546-21munin-run21:35:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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