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2026-04-30 - 17:05

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 highest latencies:
System rack4slot1s.osadl.org (updated Thu Apr 30, 2026 08:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1051421320,3sleep30-21swapper/319:32:253
1051421320,3sleep30-21swapper/319:32:253
175602798,15sleep10-21swapper/108:37:311
175602798,15sleep10-21swapper/108:37:311
175602798,15sleep10-21swapper/108:37:311
175602798,15sleep10-21swapper/108:37:311
164432730,3sleep012831-21kworker/u9:2+xprtiod08:33:430
164432730,3sleep012831-21kworker/u9:2+xprtiod08:33:430
164432730,3sleep012831-21kworker/u9:2+xprtiod08:33:430
271002590,4sleep027172-21gzip21:42:270
271002590,4sleep027172-21gzip21:42:270
277302580,3sleep20-21swapper/220:17:262
277302580,3sleep20-21swapper/220:17:262
1922325833,16sleep119299-21latency_hist08:42:281
1922325833,16sleep119299-21latency_hist08:42:281
1922325833,16sleep119299-21latency_hist08:42:281
1922325833,16sleep119299-21latency_hist08:42:281
158792580,2sleep10-21swapper/119:47:221
110022540,3chrt11005-21ntp_kernel_pll_19:32:311
110022540,3chrt11005-21ntp_kernel_pll_19:32:311
3117995037,10cyclictest700-21192.168.115.40-manager20:28:540
3117995037,10cyclictest700-21192.168.115.40-manager20:28:540
3117994922,18cyclictest3126-21seq22:53:100
3117994921,16cyclictest9855-21taskset19:29:440
3117994821,16cyclictest28699-21chrt20:22:020
3117994821,16cyclictest28699-21chrt20:22:020
3117994735,9cyclictest700-21192.168.115.40-manager20:25:270
3117994735,9cyclictest700-21192.168.115.40-manager20:25:270
3117994721,10cyclictest16605-21chrt21:13:040
3117994721,10cyclictest16605-21chrt21:13:040
3117994621,15cyclictest12883-21taskset21:03:230
3117994621,15cyclictest12883-21taskset21:03:230
3117994621,15cyclictest12883-21taskset21:03:230
3117994621,11cyclictest26027-21taskset21:39:090
3117994621,11cyclictest26027-21taskset21:39:090
3117994621,10cyclictest3544-21chrt20:38:350
3117994621,10cyclictest3544-21chrt20:38:350
3117994620,13cyclictest15021-21taskset21:12:020
3117994620,12cyclictest20600-21taskset21:26:130
3117994620,12cyclictest20600-21taskset21:26:130
3117994521,11cyclictest1816-21taskset20:35:260
3117994521,10cyclictest29836-21chrt21:49:580
3117994521,10cyclictest29836-21chrt21:49:580
3117994520,11cyclictest23313-21wc20:07:200
3117994520,11cyclictest23313-21wc20:07:200
3117994520,11cyclictest21160-21chrt20:01:120
3117994520,11cyclictest21160-21chrt20:01:120
3117994520,11cyclictest12044-21cat19:37:160
3117994520,11cyclictest12044-21cat19:37:160
3117994520,10cyclictest19362-21chrt19:57:020
3117994520,10cyclictest19362-21chrt19:57:020
255712450,3sleep125575-21gltestperf20:12:271
3117994437,5cyclictest700-21192.168.115.40-manager20:52:090
3117994437,5cyclictest700-21192.168.115.40-manager20:52:090
3117994421,13cyclictest15626-21chrt19:46:530
3117994421,13cyclictest15626-21chrt19:46:530
3117994420,11cyclictest13610-21taskset19:40:100
3117994420,11cyclictest13610-21taskset19:40:100
3117994419,8cyclictest142-21systemd-journal20:10:220
3117994418,8cyclictest0-21swapper/021:33:410
3117994418,8cyclictest0-21swapper/021:33:410
3117994333,7cyclictest700-21192.168.115.40-manager20:47:150
3117994333,7cyclictest700-21192.168.115.40-manager20:47:150
3117994320,10cyclictest9079-21taskset20:52:380
3117994320,10cyclictest9079-21taskset20:52:380
3117994319,7cyclictest26515-21taskset20:12:560
204132420,2sleep10-21swapper/119:57:311
204132420,2sleep10-21swapper/119:57:311
201302423,14sleep20-21swapper/208:42:412
201302423,14sleep20-21swapper/208:42:412
201302423,14sleep20-21swapper/208:42:412
201302423,14sleep20-21swapper/208:42:412
165922427,28sleep10-21swapper/108:35:291
165222420,16sleep20-21swapper/208:34:462
165222420,16sleep20-21swapper/208:34:462
165222420,16sleep20-21swapper/208:34:462
3117994120,9cyclictest11249-21runrttasks21:01:380
3117994120,9cyclictest11249-21runrttasks21:01:380
3117994120,8cyclictest22205-21taskset21:27:510
3117994120,8cyclictest22205-21taskset21:27:510
3117994116,11cyclictest7872-21taskset19:23:130
3117994116,11cyclictest7872-21taskset19:23:130
3117994116,11cyclictest7872-21taskset19:23:130
3117994113,9cyclictest17377-21seq19:50:270
3117993915,11cyclictest18607-21runrttasks21:19:470
3117993915,11cyclictest18607-21runrttasks21:19:470
241312360,3chrt0-21swapper/120:07:321
3122993329,3cyclictest23745-21switchtime21:32:331
3122993329,3cyclictest23745-21switchtime21:32:331
3122993327,4cyclictest28146-21cron21:47:111
3122993327,4cyclictest28146-21cron21:47:111
3122993226,5cyclictest27774-21netstat20:17:271
3122993226,5cyclictest27774-21netstat20:17:271
3122993226,5cyclictest18233-21kernelversion19:52:251
3122993226,5cyclictest18233-21kernelversion19:52:251
293402320,10sleep1271rcuc/121:47:341
293402320,10sleep1271rcuc/121:47:341
312999311,24cyclictest0-21swapper/220:01:072
312999311,24cyclictest0-21swapper/220:01:072
3122993126,3cyclictest6304-21head20:47:251
3122993126,3cyclictest6304-21head20:47:251
1642923111,11sleep10-21swapper/108:33:321
1642923111,11sleep10-21swapper/108:33:321
164212312,21sleep30-21swapper/308:33:263
164212312,21sleep30-21swapper/308:33:263
164212312,21sleep30-21swapper/308:33:263
91922300,2sleep10-21swapper/119:27:331
312999301,24cyclictest0-21swapper/220:12:412
312999301,24cyclictest0-21swapper/219:34:332
312999301,24cyclictest0-21swapper/219:34:332
3122993024,5cyclictest31017-21fschecks_count20:27:241
3122993024,5cyclictest31017-21fschecks_count20:27:241
3122993024,4cyclictest1346-21avahi-daemon19:22:311
3122993024,4cyclictest1346-21avahi-daemon19:22:311
3122993024,4cyclictest1346-21avahi-daemon19:22:311
3122993023,5cyclictest29461-21kernelversion20:22:271
3122993023,5cyclictest29461-21kernelversion20:22:271
312999291,23cyclictest1788-21chrt22:35:432
312999291,23cyclictest0-21swapper/221:05:512
312999291,23cyclictest0-21swapper/221:05:512
312999291,23cyclictest0-21swapper/221:05:512
312999291,19cyclictest0-21swapper/219:30:072
3122992923,4cyclictest0-21swapper/120:42:111
3122992923,4cyclictest0-21swapper/120:42:111
185572296,15sleep00-21swapper/008:41:260
185572296,15sleep00-21swapper/008:41:260
185572296,15sleep00-21swapper/008:41:260
185572296,15sleep00-21swapper/008:41:260
147202297,15sleep10-21swapper/108:32:101
312999281,23cyclictest15992-21chrt19:47:232
312999281,20cyclictest0-21swapper/219:53:072
312999281,20cyclictest0-21swapper/219:53:072
3122992823,4cyclictest16545-21needreboot19:47:281
167192286,15sleep00-21swapper/008:36:420
167192286,15sleep00-21swapper/008:36:420
167192286,15sleep00-21swapper/008:36:420
167192286,15sleep00-21swapper/008:36:420
3144992720,4cyclictest27746-21chrt20:17:273
3144992720,4cyclictest27746-21chrt20:17:273
312999270,22cyclictest16767-21chrt21:15:112
312999270,22cyclictest16767-21chrt21:15:112
202912273,16sleep30-21swapper/308:44:363
202912273,16sleep30-21swapper/308:44:363
114682270,3sleep30-21swapper/321:02:173
114682270,3sleep30-21swapper/321:02:173
312999261,19cyclictest19797-21chrt21:22:302
312999261,19cyclictest19797-21chrt21:22:302
312999261,17cyclictest0-21swapper/220:07:532
3122992620,4cyclictest4786-21ntp_kernel_err20:42:311
3122992620,4cyclictest4786-21ntp_kernel_err20:42:311
3122992619,5cyclictest9831-21fschecks_count20:57:241
3122992619,5cyclictest9831-21fschecks_count20:57:241
184212263,16sleep30-21swapper/308:39:393
184212263,16sleep30-21swapper/308:39:393
182862263,16sleep30-21swapper/308:38:103
182862263,16sleep30-21swapper/308:38:103
182862263,16sleep30-21swapper/308:38:103
182862263,16sleep30-21swapper/308:38:103
163722263,16sleep30-21swapper/308:32:533
312999251,21cyclictest11055-21chrt20:59:072
312999251,21cyclictest11055-21chrt20:59:072
312999251,20cyclictest0-21swapper/221:33:172
312999251,20cyclictest0-21swapper/221:33:172
312999251,19cyclictest18193-21chrt21:17:322
312999251,19cyclictest18193-21chrt21:17:322
312999250,20cyclictest27948-21chrt21:44:372
312999250,20cyclictest27948-21chrt21:44:372
3122992519,3cyclictest0-21swapper/121:02:281
3122992519,3cyclictest0-21swapper/121:02:281
3122992519,3cyclictest0-21swapper/121:02:281
3122992519,3cyclictest0-21swapper/119:37:351
3122992519,3cyclictest0-21swapper/119:37:351
182532252,16sleep20-21swapper/208:37:442
182532252,16sleep20-21swapper/208:37:442
182532252,16sleep20-21swapper/208:37:442
182532252,16sleep20-21swapper/208:37:442
312999241,19cyclictest7431-21chrt20:50:262
312999241,19cyclictest7431-21chrt20:50:262
312999241,19cyclictest5380-21taskset20:42:592
312999241,19cyclictest5380-21taskset20:42:592
312999241,19cyclictest29736-21chrt21:48:392
312999241,19cyclictest29736-21chrt21:48:392
312999241,18cyclictest22241-21taskset20:02:312
312999241,18cyclictest22241-21taskset20:02:312
312999241,18cyclictest13816-21chrt21:07:272
312999240,20cyclictest30341-21chrt20:23:532
312999240,20cyclictest30341-21chrt20:23:532
3122992419,3cyclictest0-21swapper/120:32:241
3122992418,4cyclictest0-21swapper/121:22:231
3122992418,4cyclictest0-21swapper/121:22:231
3122992416,6cyclictest15045-21sort19:42:341
312299241,19cyclictest749-21runrttasks21:12:311
312299241,19cyclictest749-21runrttasks21:12:311
312999231,18cyclictest9289-21chrt20:55:212
312999231,18cyclictest9289-21chrt20:55:212
312999231,18cyclictest1545-21chrt20:32:342
312999231,18cyclictest13452-21chrt19:38:062
312999231,18cyclictest13452-21chrt19:38:062
312999231,17cyclictest32207-21taskset20:28:562
312999231,17cyclictest32207-21taskset20:28:562
312999231,17cyclictest15360-21taskset19:43:252
312999231,17cyclictest15360-21taskset19:43:252
312999230,18cyclictest8129-21taskset19:26:332
312999230,18cyclictest8129-21taskset19:26:332
312999230,18cyclictest8129-21taskset19:26:332
3122992319,2cyclictest0-21swapper/121:37:331
3122992319,2cyclictest0-21swapper/121:37:331
3122992318,3cyclictest0-21swapper/121:32:241
3122992318,3cyclictest0-21swapper/121:17:331
3122992318,3cyclictest0-21swapper/121:17:331
143392231,3sleep10-21swapper/121:07:351
312999221,15cyclictest0-21swapper/220:37:282
312999221,15cyclictest0-21swapper/220:37:282
312999220,18cyclictest22197-21taskset21:27:452
312999220,18cyclictest22197-21taskset21:27:452
3122992217,3cyclictest0-21swapper/120:52:271
3122992217,3cyclictest0-21swapper/120:52:271
3122992214,6cyclictest21989-21kernelversion20:02:261
3122992214,6cyclictest21989-21kernelversion20:02:261
3122992115,4cyclictest0-21swapper/121:27:251
312999201,17cyclictest26004-21taskset21:38:512
312999201,17cyclictest26004-21taskset21:38:512
310032200,3sleep30-21swapper/320:27:243
310032200,3sleep30-21swapper/320:27:243
69232180,3sleep30-21swapper/319:22:243
69232180,3sleep30-21swapper/319:22:243
69232180,3sleep30-21swapper/319:22:243
314499183,9cyclictest0-21swapper/320:05:153
314499183,9cyclictest0-21swapper/320:05:153
314499181,13cyclictest17906-21chrt19:52:233
314499181,13cyclictest17906-21chrt19:52:233
3144991712,3cyclictest231052sleep321:32:243
314499171,12cyclictest0-21swapper/320:27:113
314499171,12cyclictest0-21swapper/320:27:113
314499171,11cyclictest20059-21chrt19:57:253
314499171,11cyclictest20059-21chrt19:57:253
314499171,11cyclictest0-21swapper/321:49:553
314499171,11cyclictest0-21swapper/321:49:553
314499161,11cyclictest8020-21taskset20:52:243
314499161,11cyclictest8020-21taskset20:52:243
314499161,10cyclictest14155-21chrt21:07:323
314499161,10cyclictest0-21swapper/320:37:243
314499161,10cyclictest0-21swapper/320:37:243
314499151,9cyclictest6368-21chrt20:47:263
314499151,9cyclictest6368-21chrt20:47:263
314499151,9cyclictest13948-21chrt19:42:183
314499151,9cyclictest13948-21chrt19:42:183
314499151,10cyclictest0-21swapper/321:42:213
143942150,3sleep30-21swapper/319:42:263
143942150,3sleep30-21swapper/319:42:263
314499148,3cyclictest171802chrt19:47:523
314499141,9cyclictest9698-21chrt19:27:423
314499141,9cyclictest24573-21chrt21:37:193
314499141,9cyclictest24573-21chrt21:37:193
314499141,9cyclictest19204-21chrt21:22:233
314499141,9cyclictest19204-21chrt21:22:233
314499141,6cyclictest0-21swapper/321:07:163
314499141,6cyclictest0-21swapper/321:07:163
314499141,6cyclictest0-21swapper/321:07:163
314499138,3cyclictest17912chrt20:35:083
314499131,9cyclictest17211-21chrt21:17:213
314499131,9cyclictest17211-21chrt21:17:213
314499131,10cyclictest5618-21chrt20:46:053
314499131,10cyclictest5618-21chrt20:46:053
314499121,9cyclictest24632-21chrt20:07:383
314499121,8cyclictest26993-21taskset21:42:253
314499121,8cyclictest26993-21taskset21:42:253
314499121,8cyclictest25948-21chrt21:38:073
314499121,8cyclictest25323-21taskset20:12:253
314499121,7cyclictest21230-21taskset21:27:263
152882121,4sleep30-21swapper/321:12:233
152882121,4sleep30-21swapper/321:12:233
plot10:48:588
setyrange[0.8:*]5
setylabel"Numberoflatencysamples"6
setxrange[0:400]4
setxlabel"Latencyus-Maximumusplottedon2
settitle"Latencyrack4slot1s"0
setterminalpbmcolor1
setoutput"r4s1s.ppm"7
setlogscaley3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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