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2026-08-03 - 15:32

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 all highest latencies:
System rack9slot4s (updated Mon Aug 03, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
116399911281101,22cyclictest16058-21basename07:35:001
100462660611,31sleep10-21swapper/107:20:141
114572496449,31sleep00-21swapper/007:23:450
1163899211203,4cyclictest16053-21munin-run07:35:000
1163899791,43cyclictest23701-21taskset07:54:080
150692720,5sleep00-21swapper/010:20:300
11638997110,30cyclictest6469-21mktemp11:25:180
195332700,5sleep119536-21aten_r4power_en10:35:151
1163899701,43cyclictest18086-21taskset07:39:280
11638997010,37cyclictest15431-21aten_r4power_po11:50:110
1163899681,45cyclictest19135-21taskset10:33:040
1163899661,45cyclictest336-21taskset08:16:020
1163899661,45cyclictest336-21taskset08:16:020
1163899651,44cyclictest20893-21taskset10:36:550
1163899651,41cyclictest1721-21taskset11:13:000
1163899641,35cyclictest8472-21cat10:05:120
1163899631,43cyclictest6981-21taskset12:51:190
11638996310,34cyclictest356-21taskset09:44:450
1163899622,36cyclictest2401-21NetworkManager12:47:440
11638996218,27cyclictest23419-21sort12:10:180
1163899621,48cyclictest32367-21taskset11:08:480
1163899621,48cyclictest20188-21taskset07:45:030
1163899621,43cyclictest31029-21taskset08:12:060
1163899611,43cyclictest5997-21seq09:58:340
11638996110,32cyclictest13316-21cat11:44:550
1163899601,46cyclictest24795-21chrt10:48:130
1163899601,45cyclictest29668-21grep09:35:160
1163899601,42cyclictest19698-21taskset07:41:310
1163899601,41cyclictest18594-21taskset11:56:140
1163899601,39cyclictest20803-21taskset12:04:340
11638996012,30cyclictest10962-21processes10:10:260
11638996011,37cyclictest21599-21cut09:15:000
1163899588,33cyclictest2401-21NetworkManager11:38:280
1163899581,7cyclictest25621-21hddtemp_smartct10:50:170
1163899581,44cyclictest32274-21taskset12:35:010
11638995813,26cyclictest3-21ksoftirqd/009:48:460
1163899579,31cyclictest29901-21chrt12:26:240
1163899573,37cyclictest2225-21dbus-daemon10:43:510
1163899571,7cyclictest17315-21unixbench_singl09:00:300
1163899571,7cyclictest17315-21unixbench_singl09:00:300
1163899571,39cyclictest25780-21chrt12:15:280
11638995710,29cyclictest27260-21seq12:20:190
1163899563,8cyclictest26131-21df08:00:140
1163899562,5cyclictest3286-21runrttasks09:50:420
1163899561,5cyclictest2200-21grep11:15:120
11638995612,32cyclictest6385-21aten_r4power_po10:00:110
1163899558,30cyclictest3148-21expr08:25:130
1163899552,7cyclictest3286-21runrttasks08:47:510
1163899551,8cyclictest2322-21taskset08:21:380
1163899551,7cyclictest6811-21grep08:35:110
1163899551,7cyclictest28102-21taskset09:30:240
1163899551,7cyclictest25006-21wc07:55:300
1163899551,7cyclictest22749-21wc09:15:270
1163899551,7cyclictest16348-21grep10:25:210
1163899551,6cyclictest31638-21unixbench_singl12:30:290
1163899551,6cyclictest28041-21wc10:55:290
1163899551,6cyclictest25209-21taskset09:23:490
1163899551,6cyclictest15269-21wc08:55:280
1163899541,7cyclictest8554-21taskset08:40:100
1163899541,6cyclictest6240-21taskset08:32:220
1163899541,6cyclictest3205-21taskset12:41:310
1163899541,6cyclictest29543-21wc11:00:220
1163899541,6cyclictest29543-21wc11:00:220
1163899541,6cyclictest28330-21cut08:05:210
1163899541,6cyclictest21479-21grep12:05:160
1163899541,5cyclictest4615-21sort11:20:170
1163899539,28cyclictest13439-21seq10:17:350
1163899531,7cyclictest19724-21sed09:10:010
1163899531,6cyclictest8937-21wc11:30:260
1163899531,6cyclictest13886-21tune2fs11:45:170
1163899531,6cyclictest13290-21mailstats08:50:260
1163899531,6cyclictest12377-21grep07:25:200
1163899531,5cyclictest26866-21taskset09:26:310
11639994230,10cyclictest22-21ksoftirqd/109:00:001
98152390,2sleep19814-21users08:40:301
14632380,2sleep11462-21vmstat11:10:311
1163999361,15cyclictest0-21swapper/109:57:441
58562341,5sleep10-21swapper/112:50:121
289272341,4sleep128983-21users08:05:301
40152331,5sleep10-21swapper/109:52:261
286312330,8sleep11163999cyclictest09:30:311
269082331,5sleep10-21swapper/109:26:591
245512331,5sleep10-21swapper/110:45:421
232692331,5sleep10-21swapper/109:18:211
118442331,5sleep10-21swapper/108:46:541
11639993314,8cyclictest22-21ksoftirqd/112:35:111
1163999331,13cyclictest0-21swapper/109:06:331
245322321,5sleep10-21swapper/112:14:201
243102320,23sleep122-21ksoftirqd/107:55:181
1163999321,4cyclictest81rcu_preempt11:00:001
115892321,5sleep10-21swapper/110:13:001
218922311,5sleep10-21swapper/107:49:521
1163999318,19cyclictest0-21swapper/108:30:171
1163999312,16cyclictest8439-21irqstats11:30:191
1163999311,4cyclictest81rcu_preempt12:49:151
1163999311,4cyclictest81rcu_preempt08:16:281
1163999311,4cyclictest81rcu_preempt08:16:271
1163999311,16cyclictest14154-21diskstats10:20:151
98012301,5sleep10-21swapper/110:08:571
318752301,5sleep10-21swapper/112:32:261
304462301,5sleep10-21swapper/111:03:181
304462301,5sleep10-21swapper/111:03:181
1163999308,9cyclictest30191-21sendmail_mailqu09:35:261
1163999304,19cyclictest21310-21diskstats12:05:151
1163999303,20cyclictest27259-21iostat_ios12:20:191
11639993015,11cyclictest22-21ksoftirqd/107:25:241
1163999301,20cyclictest0-21swapper/107:35:121
1163999301,16cyclictest7976-21chrt08:35:571
264522291,5sleep10-21swapper/112:19:471
21472291,5sleep10-21swapper/109:48:361
137932291,5sleep10-21swapper/111:45:161
1163999291,4cyclictest81rcu_preempt10:28:061
1163999291,4cyclictest81rcu_preempt09:42:451
1163999291,16cyclictest31063-21df11:05:141
11639992911,14cyclictest2234-21hddtemp_smartct12:40:161
74402281,5sleep10-21swapper/111:27:371
250542281,5sleep10-21swapper/109:22:111
227852281,5sleep10-21swapper/110:41:511
175042281,5sleep10-21swapper/109:02:001
175042281,5sleep10-21swapper/109:02:001
168182281,5sleep10-21swapper/111:52:191
139402281,5sleep10-21swapper/108:54:081
129472281,5sleep10-21swapper/111:41:031
1163999288,7cyclictest11565-21gdbus11:39:011
1163999285,5cyclictest81rcu_preempt07:55:001
1163999285,4cyclictest81rcu_preempt09:11:161
1163999284,18cyclictest19739-21iostat_ios12:00:211
273572271,5sleep10-21swapper/108:02:591
25062271,5sleep10-21swapper/108:23:271
189012271,5sleep10-21swapper/110:30:401
1163999272,20cyclictest3192-21diskstats08:25:161
11639992715,9cyclictest22-21ksoftirqd/108:10:111
1163999271,22cyclictest12253-21diskstats10:15:151
1163999271,14cyclictest18070-21ntp_states11:55:241
1163999262,11cyclictest0-21swapper/111:20:241
11639992619,5cyclictest22-21ksoftirqd/112:27:091
11639992618,5cyclictest19548-21unixbench_singl07:40:261
1163999261,11cyclictest2441-21fschecks_count11:15:161
1163999252,10cyclictest6357-21aten_r4power_en10:00:111
1163999251,15cyclictest0-21swapper/110:53:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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