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2026-06-28 - 06:53

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 Sun Jun 28, 2026 00:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2267921200,2sleep122683-21gltestperf23:43:191
2267921200,2sleep122683-21gltestperf23:43:191
2351021100,2chrt23508-21memory22:18:200
2351021100,2chrt23508-21memory22:18:200
1800921020,2chrt18004-21strings22:03:240
1800921020,2chrt18004-21strings22:03:240
284002780,2sleep128401-21/usr/sbin/munin19:38:211
284002780,2sleep128401-21/usr/sbin/munin19:38:211
284002780,2sleep128401-21/usr/sbin/munin19:38:211
223542750,3chrt0-21swapper/119:23:181
223542750,3chrt0-21swapper/119:23:181
174312650,1sleep116721-21/usr/sbin/munin23:28:241
174312650,1sleep116721-21/usr/sbin/munin23:28:241
174312650,1sleep116721-21/usr/sbin/munin23:28:241
51012610,3chrt5100-21sed20:03:181
51012610,3chrt5100-21sed20:03:181
52722590,2sleep20-21swapper/222:58:052
52722590,2sleep20-21swapper/222:58:052
205592560,1sleep1271rcuc/120:43:261
205592560,1sleep1271rcuc/120:43:261
205592560,1sleep1271rcuc/120:43:261
29132530,3sleep20-21swapper/222:48:292
29132530,3sleep20-21swapper/222:48:292
29132530,3sleep20-21swapper/222:48:292
234272510,3sleep20-21swapper/223:43:282
234272510,3sleep20-21swapper/223:43:282
18592995033,14cyclictest0-21swapper/000:03:120
18592995033,14cyclictest0-21swapper/000:03:120
18592995033,14cyclictest0-21swapper/000:03:120
20492480,3sleep20-21swapper/221:22:502
20492480,3sleep20-21swapper/221:22:502
100252470,4sleep19209-21/usr/sbin/munin23:08:251
100252470,4sleep19209-21/usr/sbin/munin23:08:251
4922450,3sleep20-21swapper/222:43:222
4922450,3sleep20-21swapper/222:43:222
4922450,3sleep20-21swapper/222:43:222
106272450,3sleep20-21swapper/220:18:182
273442430,3sleep20-21swapper/222:28:232
273442430,3sleep20-21swapper/222:28:232
160902430,1chrt15799-21cron20:33:161
160902430,1chrt15799-21cron20:33:161
18593993831,5cyclictest18586-21cyclictest00:03:191
18593993831,5cyclictest18586-21cyclictest00:03:191
18593993831,5cyclictest18586-21cyclictest00:03:191
18593993831,5cyclictest10787-21fschecks_time00:38:181
18593993831,5cyclictest10787-21fschecks_time00:38:181
1859299382,28cyclictest30340-21irqstats00:03:220
1859299382,28cyclictest30340-21irqstats00:03:220
1859299382,28cyclictest30340-21irqstats00:03:220
115622380,4sleep20-21swapper/200:38:272
115622380,4sleep20-21swapper/200:38:272
48492370,2sleep10-21swapper/121:28:251
48492370,2sleep10-21swapper/121:28:251
48492370,2sleep10-21swapper/121:28:251
252702370,3sleep20-21swapper/222:23:202
252702370,3sleep20-21swapper/222:23:202
67142360,3sleep30-21swapper/300:28:153
67142360,3sleep30-21swapper/300:28:153
233952360,2sleep30-21swapper/322:18:193
233952360,2sleep30-21swapper/322:18:193
233952360,2sleep30-21swapper/322:18:193
18592993629,5cyclictest29487-21sendmail19:43:050
18592993629,5cyclictest29487-21sendmail19:43:050
18592993629,5cyclictest29487-21sendmail19:43:050
41012350,4chrt4104-21sed22:53:221
41012350,4chrt4104-21sed22:53:221
148572350,2sleep2351rcuc/221:53:292
148572350,2sleep2351rcuc/221:53:292
50212340,2sleep05099-21gltestperf20:03:180
50212340,2sleep05099-21gltestperf20:03:180
18593993327,4cyclictest547-21rs:main1
18593993327,4cyclictest547-21rs:main1
18593993325,6cyclictest15341-21unixbench_multi20:28:281
18593993325,6cyclictest15341-21unixbench_multi20:28:281
18593993322,9cyclictest30849-21latency_hist21:13:091
18593993322,9cyclictest30849-21latency_hist21:13:091
18592993327,4cyclictest8254-21gltestperf21:38:190
18593993227,3cyclictest0-21swapper/100:03:261
18593993227,3cyclictest0-21swapper/100:03:261
18593993227,3cyclictest0-21swapper/100:03:261
18593993223,7cyclictest10543-21netstat21:43:241
18593993223,7cyclictest10543-21netstat21:43:241
18593993223,7cyclictest10543-21netstat21:43:241
143612320,5sleep20-21swapper/223:19:282
143612320,5sleep20-21swapper/223:19:282
18593993126,3cyclictest10746-21gltestperf20:18:191
1859499301,23cyclictest29755-21taskset00:03:142
1859499301,23cyclictest29755-21taskset00:03:142
1859499301,23cyclictest29755-21taskset00:03:142
18593993026,3cyclictest3364-21cut00:18:201
18593993026,3cyclictest3364-21cut00:18:201
18593993025,3cyclictest15227-21cron21:58:051
18593993025,3cyclictest15227-21cron21:58:051
18593993023,5cyclictest896-21latency_hist19:53:121
18593993023,5cyclictest896-21latency_hist19:53:121
18593993023,5cyclictest896-21latency_hist19:53:121
18593993023,5cyclictest16918-21sshd22:00:531
18593993023,5cyclictest16918-21sshd22:00:531
18593993022,6cyclictest7080-21threads21:33:271
18592993025,3cyclictest18586-21cyclictest21:58:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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