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2026-09-23 - 04:14

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 Wed Sep 23, 2026 00:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1913221240,3sleep30-21swapper/321:14:513
94692730,3sleep30-21swapper/322:14:533
124312670,3sleep20-21swapper/220:59:312
129982640,4chrt0-21swapper/320:59:403
129982640,4chrt0-21swapper/320:59:403
248892580,4sleep30-21swapper/322:59:273
13152580,4sleep30-21swapper/320:29:373
302802550,2chrt0-21swapper/220:19:392
302802550,2chrt0-21swapper/220:19:392
150512550,3chrt0-21swapper/119:39:381
150512550,3chrt0-21swapper/119:39:381
248362540,3sleep30-21swapper/320:04:403
214212530,4sleep3431rcuc/300:14:453
157742520,3chrt0-21swapper/323:59:413
157742520,3chrt0-21swapper/323:59:413
157742520,3chrt0-21swapper/323:59:413
6035995021,27cyclictest5564-21timerwakeupswit22:04:500
6035995021,27cyclictest5564-21timerwakeupswit22:04:500
6035994815,29cyclictest17011-21/usr/sbin/munin00:04:430
233672480,2sleep123368-21/usr/sbin/munin00:19:461
233672480,2sleep123368-21/usr/sbin/munin00:19:461
220612480,1sleep10-21swapper/122:49:451
280742470,3sleep30-21swapper/300:34:273
603599441,20cyclictest16919-21cat00:04:320
603599441,20cyclictest16919-21cat00:04:320
603599441,20cyclictest16919-21cat00:04:320
257502440,4sleep20-21swapper/221:34:362
603699432,32cyclictest17478-21ethtool00:04:411
6035994319,2cyclictest0-21swapper/020:59:360
6035994319,2cyclictest0-21swapper/020:59:360
178282430,2sleep30-21swapper/322:39:383
178282430,2sleep30-21swapper/322:39:383
178282430,2sleep30-21swapper/322:39:383
324332420,3sleep30-21swapper/320:24:423
324332420,3sleep30-21swapper/320:24:423
287342420,3sleep30-21swapper/300:34:393
284132420,1sleep128533-21timerandwakeup21:39:471
284132420,1sleep128533-21timerandwakeup21:39:471
31892400,3sleep20-21swapper/221:59:412
31892400,3sleep20-21swapper/221:59:412
292752400,3sleep20-21swapper/200:34:462
138602390,3sleep20-21swapper/219:34:452
6036993630,4cyclictest30570-21kernelversion00:39:401
6036993630,4cyclictest30570-21kernelversion00:39:401
6036993629,5cyclictest21255-21netstat19:54:441
6036993629,5cyclictest21255-21netstat19:54:441
268242360,3sleep20-21swapper/220:09:422
6036993529,4cyclictest13598-21cron22:29:251
6036993529,4cyclictest13598-21cron22:29:251
6036993526,6cyclictest8618-21timerandwakeup23:39:471
6036993526,6cyclictest8618-21timerandwakeup23:39:471
6035993527,6cyclictest27089-21fschecks_count23:04:380
44782350,2chrt4482-21cpu22:04:381
44782350,2chrt4482-21cpu22:04:381
162742340,5chrt16277-21unixbench-2d23:59:481
162742340,5chrt16277-21unixbench-2d23:59:481
162742340,5chrt16277-21unixbench-2d23:59:481
6036993328,3cyclictest0-21swapper/120:04:241
6036993328,3cyclictest0-21swapper/120:04:241
6035993326,5cyclictest14946-21/usr/sbin/munin19:39:380
6035993326,5cyclictest14946-21/usr/sbin/munin19:39:380
238762330,4sleep20-21swapper/221:29:382
603799321,21cyclictest16911-21chrt00:04:312
603799321,21cyclictest16911-21chrt00:04:312
603799321,21cyclictest16911-21chrt00:04:312
6036993227,3cyclictest0-21swapper/122:04:251
6036993227,3cyclictest0-21swapper/122:04:251
6036993225,5cyclictest29603-21cut21:44:361
6036993225,5cyclictest29603-21cut21:44:361
6035993226,5cyclictest30691-21processes20:19:450
6035993226,5cyclictest30691-21processes20:19:450
250962320,3chrt0-21swapper/200:24:412
250962320,3chrt0-21swapper/200:24:412
7932310,3chrt794-21/usr/sbin/munin23:19:441
7932310,3chrt794-21/usr/sbin/munin23:19:441
6036993124,5cyclictest8419-21cut22:14:431
6036993124,5cyclictest17854-21gltestperf22:39:381
6036993124,5cyclictest17854-21gltestperf22:39:381
6036993124,5cyclictest17854-21gltestperf22:39:381
6036993122,7cyclictest18095-21latency_hist21:14:321
6036993122,7cyclictest18095-21latency_hist21:14:321
6036993024,4cyclictest30797-21fschecks_count23:14:421
6036993023,5cyclictest15456-21timerwakeupswit21:04:471
6036993022,6cyclictest6032-21cyclictest20:09:391
6035993023,5cyclictest10491-21switchtime23:44:450
6035993023,5cyclictest10491-21switchtime23:44:450
271572300,3sleep30-21swapper/321:38:033
6036992923,3cyclictest0-21swapper/120:34:391
6036992921,6cyclictest27550-21ls23:04:421
6036992920,7cyclictest13961-21netstat23:54:441
6036992919,8cyclictest24687-21cut00:24:381
6036992919,8cyclictest24687-21cut00:24:381
6035992923,5cyclictest6809-21kernelversion22:09:400
6035992923,5cyclictest6809-21kernelversion22:09:400
6035992923,5cyclictest19108-21switchtime21:14:510
6035992923,3cyclictest6610-21latency_hist20:44:250
6035992923,3cyclictest6610-21latency_hist20:44:250
6035992922,5cyclictest11714-21latency_hist22:24:250
6035992922,5cyclictest11714-21latency_hist22:24:250
6035992919,8cyclictest5892-21cut23:34:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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