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2026-06-09 - 14:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
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 highest latencies:
System rack9slot4s (updated Tue Jun 09, 2026 00:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134069912111180,26cyclictest28494-21timerwakeupswit20:00:271
134069912111180,26cyclictest28494-21timerwakeupswit20:00:271
134069911131104,6cyclictest0-21swapper/119:25:091
134059911111096,12cyclictest0-21swapper/019:25:040
119262687639,32sleep10-21swapper/119:20:141
121302641559,31sleep00-21swapper/019:20:160
1340599158139,3cyclictest0-21swapper/020:00:270
1340599158139,3cyclictest0-21swapper/020:00:270
305422880,3sleep10-21swapper/100:25:181
305422880,3sleep10-21swapper/100:25:171
225462860,8sleep11340699cyclictest19:45:261
250702820,5sleep00-21swapper/021:20:010
317232610,8sleep00-21swapper/020:10:220
203902450,8sleep11340699cyclictest19:40:181
1340599389,5cyclictest81rcu_preempt19:37:510
152272371,32sleep12695-21snmpd20:51:511
103882370,8sleep01340599cyclictest23:30:260
13406993524,6cyclictest27470-21ntp_states22:50:241
278272341,4sleep111565-21gdbus21:25:231
268342331,28sleep026845-21munin-run21:25:010
1340699337,7cyclictest3286-21runrttasks23:45:161
1340599332,14cyclictest0-21swapper/022:33:100
78432322,4sleep10-21swapper/100:50:231
148542321,4sleep014999-21awk20:50:280
13406993210,8cyclictest9050-21unixbench_singl22:00:291
1340599329,10cyclictest0-21swapper/021:27:490
1340599322,17cyclictest314-21hddtemp_smartct23:05:170
73712311,4sleep00-21swapper/021:57:050
53032311,27sleep15439-21cpuspeed_turbos00:45:121
13406993111,15cyclictest23219-21memory00:05:241
1340599318,11cyclictest0-21swapper/020:50:010
1340599316,13cyclictest81rcu_preempt22:25:280
13405993113,14cyclictest22918-21taskset21:13:290
1340599311,18cyclictest8169-21python00:50:290
1340599311,16cyclictest24401-21munin-node00:10:100
1340599311,15cyclictest32504-21sendmail-msp21:40:000
68862301,6sleep00-21swapper/023:20:360
315962301,5sleep00-21swapper/000:28:160
315962301,5sleep00-21swapper/000:28:160
298392301,5sleep00-21swapper/000:24:320
279592301,5sleep00-21swapper/000:19:420
13406993022,4cyclictest11565-21gdbus20:14:061
13406993017,7cyclictest21251-21iostat_ios00:00:201
1340699301,25cyclictest3990-21diskstats23:15:121
1340599306,11cyclictest0-21swapper/000:05:200
1340599301,4cyclictest81rcu_preempt20:43:080
1340599301,27cyclictest0-21swapper/019:33:110
90472291,5sleep00-21swapper/023:28:340
60222291,5sleep00-21swapper/020:28:560
43672291,5sleep00-21swapper/023:15:200
298762291,5sleep10-21swapper/122:56:231
298762291,5sleep10-21swapper/122:56:221
253852291,5sleep125437-21cat00:10:281
215712291,5sleep00-21swapper/019:45:010
147342291,5sleep00-21swapper/023:43:570
147342291,5sleep00-21swapper/023:43:570
1340699299,16cyclictest0-21swapper/120:35:301
1340699294,9cyclictest2753-21diskstats20:20:131
13406992919,6cyclictest24015-21cat22:40:271
1340599298,7cyclictest27653-21python22:50:250
1340599296,18cyclictest28929-21grep22:55:160
1340599296,18cyclictest28929-21grep22:55:150
1340599295,18cyclictest1210-21memory20:15:220
1340599292,23cyclictest3003-21fschecks_time20:20:150
1340599291,4cyclictest81rcu_preempt23:56:280
1340599291,4cyclictest81rcu_preempt22:44:310
1340599291,4cyclictest81rcu_preempt22:37:230
1340599291,4cyclictest81rcu_preempt22:16:200
1340599291,4cyclictest81rcu_preempt19:57:250
1340599291,4cyclictest81rcu_preempt00:35:260
1340599291,12cyclictest3658-21diskstats00:40:160
95102281,5sleep00-21swapper/020:36:110
91822281,23sleep19184-21cron23:30:001
70672281,5sleep10-21swapper/123:22:281
56782281,5sleep00-21swapper/021:54:030
47572281,4sleep10-21swapper/100:41:471
322532281,5sleep10-21swapper/121:37:511
304522281,3sleep00-21swapper/023:00:120
303012281,5sleep10-21swapper/121:32:021
303012281,5sleep10-21swapper/121:32:021
302532281,5sleep00-21swapper/021:31:320
302532281,5sleep00-21swapper/021:31:320
229962281,5sleep10-21swapper/121:14:181
223922281,5sleep10-21swapper/122:36:461
190592281,5sleep00-21swapper/021:02:240
188262281,4sleep10-21swapper/122:28:401
182642281,5sleep00-21swapper/023:51:370
171912281,5sleep10-21swapper/120:57:431
164062281,5sleep00-21swapper/023:46:480
1340699284,18cyclictest2387-21diskstats21:45:151
1340699284,18cyclictest19718-21iostat_ios22:30:191
1340699284,18cyclictest16363-21diskstats19:30:151
13406992820,4cyclictest22-21ksoftirqd/123:10:291
13406992815,7cyclictest9645-21diskstats23:30:151
1340699281,23cyclictest18004-21hostname19:35:111
1340599284,17cyclictest12242-21python23:35:260
1340599283,12cyclictest0-21swapper/022:10:280
1340599282,13cyclictest25054-21df_inode22:45:140
13405992818,6cyclictest32080-21cpu00:30:110
1340599281,4cyclictest81rcu_preempt23:12:380
13405992810,5cyclictest8129-21diskstats22:00:150
13405992810,5cyclictest0-21swapper/021:45:230
111922281,5sleep00-21swapper/022:07:370
318432271,5sleep10-21swapper/123:02:051
295712271,4sleep10-21swapper/100:21:471
264632271,5sleep10-21swapper/122:49:551
232172271,5sleep10-21swapper/121:15:041
194682271,5sleep10-21swapper/121:05:091
188782271,5sleep10-21swapper/121:00:331
185492271,5sleep10-21swapper/123:54:351
18182271,5sleep10-21swapper/120:15:391
169942271,5sleep10-21swapper/122:24:071
15892271,5sleep00-21swapper/021:41:430
15302271,5sleep10-21swapper/123:09:521
147572271,5sleep10-21swapper/123:44:101
147572271,5sleep10-21swapper/123:44:101
1340699272,21cyclictest0-21swapper/121:42:011
13406992718,5cyclictest1180-21cron00:35:001
13406992717,6cyclictest14686-21sed22:15:281
13406992715,9cyclictest22-21ksoftirqd/123:37:591
13406992714,7cyclictest25757-21diskstats19:55:151
1340699271,24cyclictest0-21swapper/121:21:021
1340599276,17cyclictest2225-21dbus-daemon20:56:390
1340599273,7cyclictest20852-21python19:40:290
1340599272,13cyclictest16870-21taskset22:22:490
1340599271,12cyclictest7461-21unixbench_multi20:30:280
60022261,5sleep10-21swapper/120:28:441
26742261,5sleep10-21swapper/100:35:411
210362261,4sleep00-21swapper/021:08:280
135022261,4sleep10-21swapper/120:48:221
1340699263,8cyclictest11588-21/usr/sbin/munin22:10:301
13406992616,6cyclictest5122-21ls21:50:291
13406992611,12cyclictest22-21ksoftirqd/120:05:371
1340599263,11cyclictest0-21swapper/000:00:290
1340599261,21cyclictest5693-21fschecks_time00:45:160
116142261,4sleep10-21swapper/120:43:171
13406992517,5cyclictest22-21ksoftirqd/123:57:201
1340599252,4cyclictest81rcu_preempt19:51:230
1340699242,18cyclictest0-21swapper/119:50:181
13406992417,4cyclictest7153-21unixbench_singl21:55:271
13406992417,4cyclictest22-21ksoftirqd/122:05:141
13406992416,5cyclictest22-21ksoftirqd/100:19:031
13406992415,6cyclictest0-21swapper/120:30:061
1340599234,10cyclictest0-21swapper/020:09:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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