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2026-07-18 - 15:45

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 Jul 18, 2026 12:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1150821140,3chrt0-21swapper/109:38:381
1150821140,3chrt0-21swapper/109:38:381
143322990,3sleep20-21swapper/212:38:442
143322990,3sleep20-21swapper/212:38:442
206112870,1sleep00-21swapper/010:03:370
206112870,1sleep00-21swapper/010:03:370
206112870,1sleep00-21swapper/010:03:370
145662850,3chrt0-21swapper/009:48:260
145662850,3chrt0-21swapper/009:48:260
145662850,3chrt0-21swapper/009:48:260
135772840,4sleep013580-21fschecks_count08:18:370
135772840,4sleep013580-21fschecks_count08:18:370
25312790,3chrt0-21swapper/309:13:473
277262650,1sleep3431rcuc/307:28:393
277262650,1sleep3431rcuc/307:28:393
243102650,2chrt24296-21fschecks_time10:13:380
243102650,2chrt24296-21fschecks_time10:13:380
243102650,2chrt24296-21fschecks_time10:13:380
243102650,2chrt24296-21fschecks_time10:13:380
201072470,3sleep30-21swapper/310:03:243
201072470,3sleep30-21swapper/310:03:243
201072470,3sleep30-21swapper/310:03:243
93952450,3sleep00-21swapper/009:33:380
93952450,3sleep00-21swapper/009:33:380
313072440,2sleep031490-21head09:03:480
313072440,2sleep031490-21head09:03:480
154592430,2sleep20-21swapper/209:48:442
154592430,2sleep20-21swapper/209:48:442
154592430,2sleep20-21swapper/209:48:442
309122400,3sleep20-21swapper/211:58:322
309122400,3sleep20-21swapper/211:58:322
309122400,3sleep20-21swapper/211:58:322
21484993914,6cyclictest201rcuc/009:28:100
21484993914,6cyclictest201rcuc/009:28:100
21484993914,6cyclictest201rcuc/009:28:100
21484993829,7cyclictest8796-21threads08:03:470
21484993829,7cyclictest8796-21threads08:03:470
266212370,3sleep30-21swapper/310:18:443
266212370,3sleep30-21swapper/310:18:443
266212370,3sleep30-21swapper/310:18:443
2148499377,5cyclictest171ktimers/009:23:100
2148499377,5cyclictest171ktimers/009:23:100
21484993710,14cyclictest16-21ksoftirqd/011:18:250
21484993710,14cyclictest16-21ksoftirqd/011:18:250
21484993710,14cyclictest16-21ksoftirqd/011:18:250
21484993611,5cyclictest201rcuc/012:19:450
21484993611,5cyclictest201rcuc/012:19:450
21484993611,5cyclictest201rcuc/012:19:450
21484993525,7cyclictest5418-21unixbench_singl12:13:490
21484993427,5cyclictest749-21runrttasks09:28:450
21484993427,5cyclictest749-21runrttasks09:28:450
21484993416,3cyclictest181rcu_preempt07:50:070
21484993416,3cyclictest181rcu_preempt07:50:070
84952330,3sleep20-21swapper/212:23:412
84952330,3sleep20-21swapper/212:23:412
84952330,3sleep20-21swapper/212:23:412
21484993327,5cyclictest11669-21/usr/sbin/munin12:33:450
21484993327,5cyclictest11669-21/usr/sbin/munin12:33:450
21484993326,5cyclictest201rcuc/009:54:410
21484993326,5cyclictest201rcuc/009:54:410
21484993326,5cyclictest201rcuc/009:54:410
28892320,3sleep00-21swapper/012:08:390
28892320,3sleep00-21swapper/012:08:390
28892320,3sleep00-21swapper/012:08:390
256092320,2sleep0171ktimers/010:16:560
256092320,2sleep0171ktimers/010:16:560
256092320,2sleep0171ktimers/010:16:560
21485993226,4cyclictest32482-21systemctl07:43:241
21485993226,4cyclictest32482-21systemctl07:43:241
21485993224,6cyclictest6910-21threads07:58:461
21484993226,4cyclictest201rcuc/011:24:440
21484993226,4cyclictest201rcuc/011:24:440
21484993226,4cyclictest201rcuc/011:24:440
21484993224,6cyclictest27153-21cpuspeed07:28:340
21484993224,6cyclictest12344-21processes08:13:470
21484993224,6cyclictest12344-21processes08:13:470
21484993224,6cyclictest12344-21processes08:13:470
21484993218,4cyclictest90-1pr/ttyS011:28:380
21484993218,4cyclictest90-1pr/ttyS011:28:380
21484993218,4cyclictest90-1pr/ttyS011:28:380
21485993126,4cyclictest5424-21cpuspeed09:23:351
21485993126,4cyclictest5424-21cpuspeed09:23:351
21485993126,4cyclictest5424-21cpuspeed09:23:351
21485993126,4cyclictest11855-21gltestperf08:13:401
21485993126,4cyclictest11855-21gltestperf08:13:401
21485993126,4cyclictest11855-21gltestperf08:13:401
21485993123,6cyclictest2017-21threads10:38:481
21485993123,6cyclictest18708-21cut09:58:391
21485993123,6cyclictest18708-21cut09:58:391
21485993123,6cyclictest18708-21cut09:58:391
2148499317,5cyclictest201rcuc/011:44:140
2148499317,5cyclictest201rcuc/011:44:140
21484993122,7cyclictest32561-21if_eth009:08:390
21484993122,7cyclictest32561-21if_eth009:08:390
21485993023,5cyclictest5101-21grep09:23:241
21485993023,5cyclictest5101-21grep09:23:241
21485993023,5cyclictest25740-21gltestperf11:43:381
21485993023,5cyclictest25740-21gltestperf11:43:381
2148499307,4cyclictest201rcuc/011:50:140
2148499307,4cyclictest201rcuc/011:50:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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