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2026-08-31 - 03:39

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 Mon Aug 31, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3240421240,4sleep20-21swapper/221:14:212
3240421240,4sleep20-21swapper/221:14:212
3155921020,2chrt31558-21sed19:44:260
259602890,3sleep20-21swapper/223:49:262
259602890,3sleep20-21swapper/223:49:262
69422870,3sleep20-21swapper/200:24:272
16442760,3chrt0-21swapper/019:54:070
16442760,3chrt0-21swapper/019:54:070
237792750,3sleep30-21swapper/323:44:203
237792750,3sleep30-21swapper/323:44:203
102422720,3sleep09428-21/usr/sbin/munin00:34:260
102422720,3sleep09428-21/usr/sbin/munin00:34:260
315482630,2chrt0-21swapper/221:14:052
315482630,2chrt0-21swapper/221:14:052
318142600,5sleep031817-21needreboot22:39:210
318142600,5sleep031817-21needreboot22:39:210
318142600,5sleep031817-21needreboot22:39:210
319212540,3sleep20-21swapper/200:05:022
119262530,2chrt11925-21cpuspeed23:14:140
19672994944,3cyclictest0-21swapper/000:04:080
19672994944,3cyclictest0-21swapper/000:04:080
19672994944,3cyclictest0-21swapper/000:04:080
1967299491,10cyclictest31742-21/usr/sbin/munin00:04:300
262482480,1sleep00-21swapper/023:49:280
262482480,1sleep00-21swapper/023:49:280
205182470,2sleep20-21swapper/223:34:272
205182470,2sleep20-21swapper/223:34:272
114162450,3chrt0-21swapper/200:39:152
114162450,3chrt0-21swapper/200:39:152
114162450,3chrt0-21swapper/200:39:152
106682450,1sleep19999-21/usr/sbin/munin23:09:221
275862440,2sleep30-21swapper/319:34:243
94112430,3chrt0-21swapper/321:39:223
94112430,3chrt0-21swapper/321:39:223
258162430,3sleep00-21swapper/022:24:180
19672994318,23cyclictest14678-21systemd-journal19:44:040
19672994318,23cyclictest14678-21systemd-journal19:44:040
1967299425,3cyclictest9493-21fschecks_time20:14:160
1967299425,3cyclictest9493-21fschecks_time20:14:160
19672994122,17cyclictest9105-21sshd00:32:520
19672994122,17cyclictest9105-21sshd00:32:520
285712400,4sleep20-21swapper/223:59:072
285712400,4sleep20-21swapper/223:59:072
198642400,3sleep00-21swapper/020:39:260
198642400,3sleep00-21swapper/020:39:260
1967299401,7cyclictest7070-21seq00:25:580
19672994012,18cyclictest0-21swapper/022:56:210
19672994012,18cyclictest0-21swapper/022:56:210
79322390,1chrt7383-21/usr/sbin/munin20:09:190
79322390,1chrt7383-21/usr/sbin/munin20:09:190
1967299391,9cyclictest749-21runrttasks22:46:290
1967299391,9cyclictest749-21runrttasks22:46:290
1967299391,9cyclictest11309-21chrt23:09:520
1967299391,7cyclictest6541-21gltestperf22:59:180
1967299391,7cyclictest6541-21gltestperf22:59:180
1967299391,7cyclictest6541-21gltestperf22:59:180
1967299391,13cyclictest9059-21cut21:39:180
1967299391,13cyclictest9059-21cut21:39:180
1967299387,29cyclictest19464-21cpuspeed23:34:150
1967299387,29cyclictest19464-21cpuspeed23:34:150
1967299381,8cyclictest4563-21sshd21:27:180
41632370,3sleep20-21swapper/219:59:202
41632370,3sleep20-21swapper/219:59:202
1967299371,9cyclictest13027-21/usr/sbin/munin20:24:250
1967299371,8cyclictest749-21runrttasks20:52:440
1967299371,8cyclictest749-21runrttasks20:52:440
1967299371,8cyclictest30573-21/usr/sbin/munin21:09:220
1967299371,8cyclictest30573-21/usr/sbin/munin21:09:220
19672993718,17cyclictest0-21swapper/020:04:040
19672993718,17cyclictest0-21swapper/020:04:040
1967299371,7cyclictest7918-21timerwakeupswit21:34:270
1967299371,7cyclictest7918-21timerwakeupswit21:34:270
1967299371,7cyclictest409-21unixbench-2d21:14:260
1967299371,7cyclictest409-21unixbench-2d21:14:260
1967299371,7cyclictest18486-21sed20:39:060
1967299371,7cyclictest13104-21date00:44:100
1967299371,7cyclictest13104-21date00:44:100
1967299371,7cyclictest13104-21date00:44:100
1967299371,6cyclictest17258-21taskset23:28:500
1967299371,6cyclictest17258-21taskset23:28:500
1967299371,10cyclictest3368-21seq00:16:580
1967299371,10cyclictest3368-21seq00:16:580
1967299371,10cyclictest24999-21ntp_states20:54:230
1967299366,2cyclictest0-21swapper/021:59:140
1967299366,2cyclictest0-21swapper/021:59:140
1967299361,9cyclictest5369-21sshd00:23:180
1967299361,9cyclictest5369-21sshd00:23:180
1967299361,9cyclictest24788-21wc22:19:260
1967299361,9cyclictest24788-21wc22:19:260
1967299361,9cyclictest23455-21idleruntime-cro22:19:040
1967299361,9cyclictest20210-21fschecks_time22:09:170
1967299361,9cyclictest14124-21wc21:54:030
1967299361,8cyclictest27299-21if_wlan023:54:170
1967299361,8cyclictest27299-21if_wlan023:54:170
1967299361,8cyclictest26707-21/usr/sbin/munin19:34:150
1967299361,7cyclictest18365-21fw_packets22:04:160
1967299361,7cyclictest17504-21acpi23:29:150
1967299361,7cyclictest17504-21acpi23:29:150
1967299361,6cyclictest32705-21fschecks_time00:09:180
1967299361,6cyclictest32705-21fschecks_time00:09:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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