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2025-12-18 - 01:52

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 Thu Dec 18, 2025 00:44:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3117321400,3sleep20-21swapper/220:40:292
3117321400,3sleep20-21swapper/220:40:292
1260521240,3sleep30-21swapper/321:20:173
444321210,3sleep30-21swapper/322:25:183
2859421200,3sleep20-21swapper/220:35:222
2859421200,3sleep20-21swapper/220:35:222
748521160,2sleep30-21swapper/319:40:073
748521160,2sleep30-21swapper/319:40:073
312821130,3sleep2351rcuc/219:25:272
226132950,1sleep30-21swapper/321:45:263
226132950,1sleep30-21swapper/321:45:263
172792920,3sleep30-21swapper/320:05:203
172792920,3sleep30-21swapper/320:05:203
180292870,3sleep30-21swapper/300:30:053
180292870,3sleep30-21swapper/300:30:053
209392860,1sleep2351rcuc/221:40:272
21142820,2sleep20-21swapper/220:50:252
134292780,4chrt201rcuc/022:50:120
134292780,4chrt201rcuc/022:50:120
134292780,4chrt201rcuc/022:50:120
275542720,8sleep0171ktimers/022:00:190
275542720,8sleep0171ktimers/022:00:190
266802680,4sleep20-21swapper/220:30:192
266802680,4sleep20-21swapper/220:30:192
6792670,3sleep0683-21gltestperf22:15:180
6792670,3sleep0683-21gltestperf22:15:180
245472650,2chrt0-21swapper/320:25:183
217972620,3sleep20-21swapper/223:10:242
217972620,3sleep20-21swapper/223:10:242
303372610,2sleep130412-21irqstats20:40:201
303372610,2sleep130412-21irqstats20:40:201
89132590,2sleep00-21swapper/021:10:170
89132590,2sleep00-21swapper/021:10:170
97212560,2sleep30-21swapper/319:45:183
213682560,3sleep00-21swapper/023:10:180
213682560,3sleep00-21swapper/023:10:180
29395995241,7cyclictest0-21swapper/000:00:350
29395995241,7cyclictest0-21swapper/000:00:350
29395995227,21cyclictest7001-21cat00:00:110
29395995227,21cyclictest7001-21cat00:00:110
138132520,3sleep013819-21missed_timers19:55:200
138132520,3sleep013819-21missed_timers19:55:200
155742510,3sleep20-21swapper/200:20:272
326952490,2chrt0-21swapper/020:45:250
326952490,2chrt0-21swapper/020:45:250
109482490,3sleep20-21swapper/200:10:182
186012460,1chrt201rcuc/020:10:070
186012460,1chrt201rcuc/020:10:070
309432410,3chrt0-21swapper/022:10:120
309432410,3chrt0-21swapper/022:10:120
29395993930,7cyclictest7536-21netstat21:05:240
29112380,2sleep00-21swapper/019:25:260
29395993730,5cyclictest12182-21latency_hist21:20:050
29395993730,5cyclictest12182-21latency_hist21:20:050
307182360,3sleep30-21swapper/320:40:263
307182360,3sleep30-21swapper/320:40:263
29397993626,8cyclictest7906-21processes00:00:261
29397993626,8cyclictest7906-21processes00:00:261
252082360,2chrt24620-21/usr/sbin/munin23:20:230
29395993520,13cyclictest0-21swapper/019:20:180
268562350,2sleep10-21swapper/123:25:181
29397993426,6cyclictest11557-21timerandwakeup21:15:271
29397993426,6cyclictest11557-21timerandwakeup21:15:271
29397993426,6cyclictest11515-21netstat00:10:241
29395993325,6cyclictest14639-21unixbench_multi22:50:280
29395993325,6cyclictest14639-21unixbench_multi22:50:280
29395993319,12cyclictest0-21swapper/020:30:180
29395993319,12cyclictest0-21swapper/020:30:180
205412330,2chrt20542-21/usr/sbin/munin00:35:210
205412330,2chrt20542-21/usr/sbin/munin00:35:210
29397993225,5cyclictest21091-21fschecks_time23:10:161
29397993225,5cyclictest21091-21fschecks_time23:10:161
29397993223,7cyclictest5502-21latency21:00:211
29397993223,7cyclictest5502-21latency21:00:211
29395993127,3cyclictest26034-21latency_hist20:30:070
2941699302,18cyclictest6984-21chrt00:00:103
2941699302,18cyclictest6984-21chrt00:00:103
29397993025,4cyclictest19388-21unixbench-2d00:30:281
29397993025,3cyclictest0-21swapper/122:00:061
29397993025,3cyclictest0-21swapper/122:00:061
29397993024,4cyclictest19378-21missed_timers20:10:191
29397993024,4cyclictest19378-21missed_timers20:10:191
29397993024,4cyclictest18227-21timerandwakeup23:00:271
29397993023,5cyclictest6229-21threads23:55:271
29397993023,5cyclictest6229-21threads23:55:271
29397993023,5cyclictest550-21cron20:25:061
29397993023,5cyclictest550-21cron20:25:061
29397993023,5cyclictest30671-21kernelversion23:35:221
29397993023,5cyclictest30671-21kernelversion23:35:221
29397993023,5cyclictest29394-21cyclictest00:08:241
29397993023,5cyclictest17112-21cut20:05:191
29397993023,5cyclictest17112-21cut20:05:191
29397993023,5cyclictest16391-21sshd00:25:161
29397993023,5cyclictest16391-21sshd00:25:161
29397993023,5cyclictest12799-21fschecks_count00:15:181
29397993023,5cyclictest12799-21fschecks_count00:15:181
29395993025,3cyclictest0-21swapper/000:20:160
29395993016,11cyclictest5105-21/usr/sbin/munin21:00:180
29395993016,11cyclictest5105-21/usr/sbin/munin21:00:180
29397992923,4cyclictest27509-21fschecks_time22:00:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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