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2025-12-28 - 10:10

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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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  Intel
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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
Compare latency of primary with shadow system
Characteristics of the 376 highest latencies:
System rack1slot6s.osadl.org (updated Sun Dec 28, 2025 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1808599969,25cyclictest0-21swapper/020:36:210
1808599936,26cyclictest23054-21yum-updatesd-he23:36:120
1808599934,28cyclictest0-21swapper/023:16:190
1808599914,28cyclictest0-21swapper/023:56:270
248599880,4rtkit-daemon2484-21rtkit-daemon19:18:132
18085998824,11cyclictest9087-21unixbench_multi00:11:260
1808599874,24cyclictest5110-21yum-updatesd-he19:36:150
18085998733,8cyclictest4186-21tr20:41:150
18085998729,13cyclictest0-21swapper/022:01:190
1808599864,27cyclictest0-21swapper/022:31:180
18085998627,11cyclictest19850-21grep23:26:270
18085998621,12cyclictest0-21swapper/000:06:080
248599850,5rtkit-daemon2484-21rtkit-daemon21:02:542
1808599855,35cyclictest0-21swapper/019:26:030
1808599855,35cyclictest0-21swapper/019:26:030
248599830,4rtkit-daemon2484-21rtkit-daemon21:26:452
248599830,4rtkit-daemon2484-21rtkit-daemon19:42:042
18089998328,48cyclictest2507-21gdm-simple-gree22:07:551
248599810,5rtkit-daemon2484-21rtkit-daemon19:58:042
18085998027,11cyclictest1419-21runrttasks22:45:550
18089997823,48cyclictest0-21swapper/123:21:071
248599760,8rtkit-daemon0-21swapper/022:31:201
18089997630,38cyclictest8356-21crond23:05:541
18089997629,39cyclictest6482-21switchtime00:06:231
18089997627,41cyclictest10202-21tr19:46:191
18089997626,42cyclictest0-21swapper/120:44:451
18089997622,45cyclictest0-21swapper/122:01:161
18089997529,20cyclictest1419-21runrttasks22:21:131
18089997529,20cyclictest1419-21runrttasks22:21:131
18089997522,34cyclictest0-21swapper/121:11:211
18089997432,34cyclictest19461-21munin-node20:06:221
18089997326,39cyclictest0-21swapper/121:55:571
248599720,8rtkit-daemon0-21swapper/120:26:331
18089997224,28cyclictest14428-21ls23:16:181
18089997216,48cyclictest0-21swapper/119:31:031
18089997216,48cyclictest0-21swapper/119:31:031
248599700,4rtkit-daemon2484-21rtkit-daemon19:48:340
18089997023,40cyclictest1892-21diskstats22:51:121
18089997023,26cyclictest4703-21hddtemp_smartct22:56:131
18089997022,40cyclictest0-21swapper/120:36:121
248599690,5rtkit-daemon2484-21rtkit-daemon19:21:352
248599690,5rtkit-daemon2484-21rtkit-daemon19:21:352
18089996924,38cyclictest0-21swapper/100:25:151
18089996922,29cyclictest25030-21taskset21:24:261
248599680,11rtkit-daemon0-21swapper/122:46:351
18089996825,36cyclictest8604-21munin-node23:06:051
18089996825,36cyclictest8604-21munin-node23:06:051
18089996823,37cyclictest22776-21awk21:20:581
18089996823,29cyclictest0-21swapper/121:01:271
18089996818,43cyclictest0-21swapper/122:36:211
18089996818,42cyclictest0-21swapper/121:26:151
18089996818,33cyclictest0-21swapper/119:36:331
18089996817,33cyclictest30229-21telnet21:36:121
18089996817,33cyclictest30229-21telnet21:36:121
18089996724,36cyclictest0-21swapper/120:22:361
18089996722,36cyclictest18565-21grep22:16:281
18089996722,30cyclictest0-21swapper/119:07:241
18089996629,30cyclictest1419-21runrttasks19:55:181
18089996626,34cyclictest0-21swapper/100:00:451
18089996625,33cyclictest1287-21snmpd21:56:171
18089996623,27cyclictest11059-21munin-node20:56:321
18089996622,36cyclictest32388-21sh19:26:031
18089996622,36cyclictest32388-21sh19:26:031
18089996621,29cyclictest0-21swapper/119:12:501
18089996620,39cyclictest0-21swapper/120:02:331
18089996541,17cyclictest22716-21taskset19:04:311
18089996527,11cyclictest31086-21turbostat22:45:541
18089996526,32cyclictest0-21swapper/120:00:351
18089996523,35cyclictest1287-21snmpd00:01:071
18089996523,35cyclictest0-21swapper/120:34:331
18089996522,30cyclictest0-21swapper/119:31:381
18089996521,31cyclictest0-21swapper/120:16:151
18089996521,29cyclictest0-21swapper/122:26:091
18089996521,29cyclictest0-21swapper/122:26:091
18089996435,21cyclictest22730-21gltestperf20:11:231
18089996425,32cyclictest0-21swapper/119:00:331
18089996424,24cyclictest7968-21unixbench_multi20:46:341
18089996420,37cyclictest0-21swapper/123:36:161
18089996420,30cyclictest0-21swapper/100:11:041
1808599643,12cyclictest30163-21yum-updatesd-he21:36:190
1808599643,12cyclictest30163-21yum-updatesd-he21:36:190
18089996323,34cyclictest2655-21munin-node21:46:281
18089996317,31cyclictest8665-21munin-node20:51:211
18089996317,31cyclictest8665-21munin-node20:51:211
18089996230,26cyclictest1419-21runrttasks00:17:481
18089996228,27cyclictest16595-21fschecks_time21:06:211
18089996226,29cyclictest29125-21ntpq19:16:311
18089996221,35cyclictest0-21swapper/123:26:071
18089996218,37cyclictest0-21swapper/123:41:261
248599610,13rtkit-daemon2484-21rtkit-daemon19:42:273
248599610,13rtkit-daemon2484-21rtkit-daemon19:19:053
248599610,12rtkit-daemon2484-21rtkit-daemon21:21:533
18089996119,37cyclictest0-21swapper/122:11:281
18089996114,33cyclictest0-21swapper/123:46:051
18089996114,31cyclictest0-21swapper/121:31:151
248599600,12rtkit-daemon2484-21rtkit-daemon20:01:493
1809199604,30cyclictest0-21swapper/321:28:073
18089996029,11cyclictest1287-21snmpd23:11:141
18089996025,28cyclictest0-21swapper/123:32:071
61342593,47sleep30-21swapper/319:36:273
248599580,2rtkit-daemon0-21swapper/220:06:412
1809099584,34cyclictest0-21swapper/220:36:172
18090995827,9cyclictest24009-21awk20:16:012
18089995831,21cyclictest32678-21taskset21:41:111
1809099575,33cyclictest0-21swapper/222:46:122
18089995723,27cyclictest0-21swapper/119:42:151
18089995716,35cyclictest0-21swapper/123:53:171
18089995716,35cyclictest0-21swapper/123:53:171
1809199569,26cyclictest0-21swapper/322:11:083
18091995618,19cyclictest11156-21aten_r1power_fr20:56:113
18090995623,14cyclictest0-21swapper/223:41:052
248599550,4rtkit-daemon2484-21rtkit-daemon19:47:343
1809199553,34cyclictest0-21swapper/323:01:093
1809099557,24cyclictest0-21swapper/220:26:132
1809099554,32cyclictest0-21swapper/223:56:132
18089995533,16cyclictest0-21swapper/118:56:041
1808599554,35cyclictest0-21swapper/019:57:330
1808599554,30cyclictest0-21swapper/023:31:070
34312543,9sleep20-21swapper/222:53:592
248599540,5rtkit-daemon2484-21rtkit-daemon21:16:313
1809099544,41cyclictest0-21swapper/222:36:092
1809099544,34cyclictest0-21swapper/220:57:422
1809099544,31cyclictest0-21swapper/218:56:252
82232532,43sleep00-21swapper/020:48:220
48882533,42sleep34899-21iostat_ios20:41:243
248599530,4rtkit-daemon2484-21rtkit-daemon19:58:263
248599530,4rtkit-daemon2484-21rtkit-daemon18:56:593
232942532,44sleep00-21swapper/020:11:350
226182532,9sleep20-21swapper/219:03:162
1809199534,30cyclictest0-21swapper/320:46:303
1809099534,31cyclictest0-21swapper/221:21:192
18090995332,12cyclictest24983-21tune2fs20:16:222
1808599537,13cyclictest1419-21runrttasks20:01:320
1808599534,30cyclictest0-21swapper/021:26:250
18085995331,15cyclictest0-21swapper/022:56:190
157672532,43sleep00-21swapper/023:21:060
251832522,43sleep00-21swapper/019:10:320
22832522,9sleep30-21swapper/321:44:523
1809199524,30cyclictest0-21swapper/321:01:263
18090995233,11cyclictest9139-21grep21:56:312
18090995224,12cyclictest0-21swapper/223:16:062
18090995221,13cyclictest0-21swapper/223:46:222
18085995234,11cyclictest0-21swapper/022:21:080
18085995234,11cyclictest0-21swapper/022:21:080
18085995221,13cyclictest0-21swapper/022:06:130
320852512,43sleep30-21swapper/323:53:413
320852512,43sleep30-21swapper/323:53:413
284432512,9sleep30-21swapper/320:21:533
248599510,6rtkit-daemon0-21swapper/023:26:183
236872512,41sleep00-21swapper/021:21:190
1809199515,28cyclictest0-21swapper/320:16:353
1809199514,29cyclictest0-21swapper/323:36:063
18091995134,10cyclictest999-21grep19:26:243
18091995134,10cyclictest999-21grep19:26:243
18091995134,10cyclictest19060-21grep21:11:193
1809099516,26cyclictest1419-21runrttasks21:36:142
1809099516,26cyclictest1419-21runrttasks21:36:142
1809099515,28cyclictest0-21swapper/221:46:302
1809099515,28cyclictest0-21swapper/220:01:282
1809099515,28cyclictest0-21swapper/219:31:322
1809099515,28cyclictest0-21swapper/219:06:252
1809099515,27cyclictest0-21swapper/222:16:172
1809099515,27cyclictest0-21swapper/221:51:162
1809099514,28cyclictest0-21swapper/220:41:292
18090995121,13cyclictest0-21swapper/200:01:262
18090995120,13cyclictest0-21swapper/200:06:092
18090995111,23cyclictest31921-1kworker/2:0H19:51:282
1808599515,28cyclictest0-21swapper/021:16:150
1808599514,40cyclictest0-21swapper/020:25:250
18085995132,11cyclictest28410-21tune2fs23:46:120
18085995126,9cyclictest0-21swapper/023:54:560
18085995126,9cyclictest0-21swapper/023:54:560
18085995123,22cyclictest5350-21sort21:51:120
159722513,11sleep20-21swapper/223:21:082
59182502,41sleep20-21swapper/223:00:202
319402503,9sleep20-21swapper/223:51:472
319402503,9sleep20-21swapper/223:51:472
271892502,40sleep00-21swapper/023:42:180
1809199504,29cyclictest0-21swapper/322:35:563
1809199504,28cyclictest0-21swapper/322:01:313
1809199504,12cyclictest0-21swapper/320:52:423
1809199504,12cyclictest0-21swapper/320:52:423
18091995012,31cyclictest27832-21open_files22:36:263
1809099505,27cyclictest0-21swapper/222:41:182
1809099505,24cyclictest21822-21open_files23:31:242
1809099504,28cyclictest0-21swapper/223:11:252
1809099504,28cyclictest0-21swapper/222:26:272
1809099504,28cyclictest0-21swapper/222:26:272
1809099504,28cyclictest0-21swapper/220:46:362
1809099504,28cyclictest0-21swapper/220:31:312
1809099504,28cyclictest0-21swapper/200:16:052
1809099504,27cyclictest0-21swapper/221:06:132
1809099504,27cyclictest0-21swapper/220:21:222
1808599506,27cyclictest0-21swapper/019:16:330
1808599505,28cyclictest0-21swapper/021:56:130
1808599505,27cyclictest0-21swapper/022:26:120
1808599505,27cyclictest0-21swapper/022:26:120
1808599504,28cyclictest0-21swapper/019:31:310
1809199494,27cyclictest0-21swapper/323:20:553
1809199494,27cyclictest0-21swapper/319:06:253
1809199494,27cyclictest0-21swapper/300:06:093
18091994934,9cyclictest10969-21cut00:16:183
18091994918,13cyclictest0-21swapper/323:21:053
1809099494,36cyclictest0-21swapper/223:26:152
1809099494,28cyclictest0-21swapper/200:21:162
1809099494,27cyclictest0-21swapper/221:41:262
1809099494,27cyclictest0-21swapper/220:51:232
1809099494,27cyclictest0-21swapper/220:51:232
1809099494,27cyclictest0-21swapper/219:36:342
1809099494,27cyclictest0-21swapper/200:11:172
1809099494,26cyclictest0-21swapper/221:16:502
1808599495,27cyclictest0-21swapper/019:51:290
1808599495,26cyclictest0-21swapper/022:46:140
1808599494,28cyclictest0-21swapper/021:31:180
1808599494,28cyclictest0-21swapper/020:16:190
1808599494,27cyclictest0-21swapper/022:16:130
18085994931,12cyclictest0-21swapper/000:21:210
18085994920,12cyclictest0-21swapper/000:16:210
168142493,40sleep015844-21munin-node21:06:240
81272482,39sleep20-21swapper/223:03:022
34072483,9sleep00-21swapper/022:53:410
263582482,39sleep30-21swapper/319:11:243
1809199484,36cyclictest0-21swapper/321:06:133
1809199484,28cyclictest0-21swapper/321:40:593
1809199484,28cyclictest0-21swapper/321:40:593
1809199484,27cyclictest0-21swapper/323:31:223
1809199484,27cyclictest0-21swapper/322:16:133
1809199484,27cyclictest0-21swapper/322:00:573
1809199484,27cyclictest0-21swapper/321:35:593
1809199484,26cyclictest0-21swapper/322:22:573
1809199484,26cyclictest0-21swapper/322:22:573
1809199484,26cyclictest0-21swapper/320:26:213
1809199484,26cyclictest0-21swapper/320:06:383
1809199484,26cyclictest0-21swapper/319:52:323
1809099484,27cyclictest0-21swapper/221:11:172
1809099484,27cyclictest0-21swapper/219:11:252
18090994819,11cyclictest25722-21sshd22:31:262
1808599485,26cyclictest0-21swapper/020:56:250
1808599485,25cyclictest0-21swapper/020:36:000
1808599484,36cyclictest0-21swapper/023:10:580
1808599484,27cyclictest0-21swapper/022:36:240
1808599484,27cyclictest0-21swapper/020:26:180
1808599483,31cyclictest0-21swapper/021:11:340
18085994827,14cyclictest0-21swapper/019:01:220
98152472,9sleep20-21swapper/222:01:032
307612472,9sleep30-21swapper/322:41:513
291242473,11sleep227775-21munin-node21:31:292
237792472,9sleep30-21swapper/320:13:193
22902472,38sleep00-21swapper/021:44:570
1809199474,27cyclictest0-21swapper/300:21:153
1809199474,26cyclictest0-21swapper/322:27:583
1809199474,26cyclictest0-21swapper/322:27:583
1809199474,26cyclictest0-21swapper/322:06:313
1809199474,26cyclictest0-21swapper/300:03:133
1809199474,25cyclictest0-21swapper/323:58:133
1809199473,26cyclictest0-21swapper/321:46:183
1809199473,24cyclictest4882-21munin-run19:36:033
18091994719,11cyclictest0-21swapper/321:52:523
18091994715,16cyclictest15344-21nscd23:45:523
1809099474,26cyclictest0-21swapper/223:06:062
1809099474,26cyclictest0-21swapper/223:06:062
1809099474,23cyclictest0-21swapper/219:26:172
1809099474,23cyclictest0-21swapper/219:26:172
1808599474,38cyclictest0-21swapper/021:01:270
1808599474,26cyclictest0-21swapper/022:11:170
1808599474,26cyclictest0-21swapper/019:41:140
1808599474,26cyclictest0-21swapper/019:12:250
1808599473,27cyclictest0-21swapper/000:01:140
104642472,9sleep30-21swapper/323:07:223
104642472,9sleep30-21swapper/323:07:223
103162472,9sleep20-21swapper/219:46:212
322682462,9sleep30-21swapper/319:24:343
322682462,9sleep30-21swapper/319:24:343
24872462,38sleep30-21swapper/320:36:243
248599460,5rtkit-daemon2484-21rtkit-daemon22:11:212
23372462,38sleep00-21swapper/019:29:390
23372462,38sleep00-21swapper/019:29:390
212262462,9sleep20-21swapper/222:22:032
212262462,9sleep20-21swapper/222:22:032
1809199463,26cyclictest0-21swapper/322:56:043
1809199463,24cyclictest0-21swapper/300:11:043
18091994618,12cyclictest0-21swapper/322:51:103
1808599465,34cyclictest0-21swapper/020:51:260
1808599465,34cyclictest0-21swapper/020:51:260
1808599464,35cyclictest0-21swapper/020:06:260
1808599463,30cyclictest0-21swapper/021:46:120
80382452,37sleep00-21swapper/023:01:510
1809199454,34cyclictest0-21swapper/323:46:213
1809199454,22cyclictest0-21swapper/322:46:063
1809099454,32cyclictest0-21swapper/218:56:052
18090994516,12cyclictest0-21swapper/222:06:132
1808599454,35cyclictest0-21swapper/019:01:030
158962454,6sleep00-21swapper/018:51:070
129332452,9sleep30-21swapper/323:13:273
1809199444,24cyclictest0-21swapper/319:02:243
1809199444,12cyclictest0-21swapper/320:31:173
18090994425,13cyclictest0-21swapper/223:36:222
1808599445,12cyclictest0-21swapper/023:06:070
1808599445,12cyclictest0-21swapper/023:06:070
248599430,5rtkit-daemon2484-21rtkit-daemon18:51:213
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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