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2026-03-26 - 22:30

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
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Thu Mar 26, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31721240,4sleep1319-21uname10:38:091
104049910222,72cyclictest30314-21switchtime08:58:191
104049910222,72cyclictest30314-21switchtime08:58:191
1040499984,35cyclictest0-21swapper/107:04:001
10404999716,8cyclictest31074-21runrttasks09:48:071
10399999718,12cyclictest0-21swapper/007:47:590
1040499963,85cyclictest26751-21munin-node09:42:561
1040499963,85cyclictest26751-21munin-node09:42:561
1040499934,83cyclictest9368-21munin-node06:38:231
1040499934,82cyclictest7816-21interrupts07:38:141
1040499934,36cyclictest0-21swapper/110:46:181
1040499933,84cyclictest16571-21telnet06:53:041
1040499933,84cyclictest16571-21telnet06:53:041
1039999933,22cyclictest28339-21ssh08:57:140
10399999317,7cyclictest19237-21ssh10:18:080
1040499924,33cyclictest1419-21runrttasks06:44:391
1040499924,33cyclictest0-21swapper/108:01:391
1040499923,22cyclictest3131-21diskmemload08:28:241
10404999219,12cyclictest0-21swapper/107:51:591
10404999215,11cyclictest0-21swapper/108:21:151
1039999923,38cyclictest0-21swapper/007:46:040
1039999923,24cyclictest14505-21munin-node10:58:160
1039999923,20cyclictest18820-21ssh07:53:230
1039999922,22cyclictest15948-21ssh09:26:060
10399999214,10cyclictest1287-21snmpd08:23:060
1040499914,35cyclictest18834-21fschecks_time10:18:021
1040499914,23cyclictest1103-21yum-updatesd-he08:16:481
1040499913,81cyclictest3131-21diskmemload08:05:591
1039999914,22cyclictest10232-21tr09:18:000
1039999913,82cyclictest0-21swapper/008:20:180
1039999913,81cyclictest0-21swapper/008:47:580
1039999913,22cyclictest3131-21diskmemload10:53:120
1039999913,19cyclictest4629-21ssh09:08:170
1039999913,11cyclictest0-21swapper/009:49:280
10399999119,8cyclictest1419-21runrttasks09:00:090
10399999119,8cyclictest1419-21runrttasks09:00:090
10399999117,7cyclictest28577-21ssh08:08:150
10399999116,8cyclictest3131-21diskmemload08:38:130
1040699904,42cyclictest0-21swapper/208:53:182
1040499904,21cyclictest1287-21snmpd10:57:381
1039999903,22cyclictest10268-21kworker/0:108:13:150
10399999018,10cyclictest4702-21aten2.4-expect09:57:570
10399999014,13cyclictest0-21swapper/009:42:460
10399999014,13cyclictest0-21swapper/009:42:460
1040699894,78cyclictest0-21swapper/208:18:022
1040499895,76cyclictest19773-21ssh09:32:461
1040499894,78cyclictest3131-21diskmemload10:50:221
1040499894,37cyclictest0-21swapper/110:17:181
1040499894,36cyclictest0-21swapper/108:47:071
1040499894,36cyclictest0-21swapper/107:53:121
1040499893,79cyclictest7041-21ssh08:23:221
1039999894,79cyclictest3131-21diskmemload08:43:050
1039999893,8cyclictest121850irq/46-eth009:56:240
1039999893,24cyclictest0-21swapper/008:37:150
1039999893,20cyclictest9158-21ssh08:28:050
1039999893,13cyclictest0-21swapper/009:17:460
10399998916,11cyclictest0-21swapper/010:16:160
10399998913,11cyclictest0-21swapper/009:03:190
10399998913,10cyclictest0-21swapper/009:31:380
1040499885,33cyclictest0-21swapper/110:23:361
1040499885,33cyclictest0-21swapper/110:23:361
1040499885,24cyclictest0-21swapper/107:33:221
1040499885,24cyclictest0-21swapper/107:33:221
1040499884,34cyclictest0-21swapper/108:32:561
1040499883,77cyclictest3131-21diskmemload09:25:331
1040499883,38cyclictest0-21swapper/108:38:251
1040499883,37cyclictest0-21swapper/110:10:421
1040499883,37cyclictest0-21swapper/109:15:061
1039999884,21cyclictest3131-21diskmemload10:33:590
1039999883,25cyclictest0-21swapper/009:33:120
1039999883,22cyclictest2027-21ssh10:42:030
1039999883,12cyclictest0-21swapper/010:12:320
1039999882,23cyclictest32093-21munin-node06:18:060
10399998815,11cyclictest0-21swapper/010:48:150
10399998815,11cyclictest0-21swapper/007:38:160
10399998814,7cyclictest4423-21rm07:33:120
10399998814,7cyclictest4423-21rm07:33:120
10399998813,12cyclictest0-21swapper/010:26:200
10399998813,12cyclictest0-21swapper/010:26:200
10407998734,17cyclictest19256-21sshd09:30:543
1040699873,75cyclictest0-21swapper/210:47:152
1040699873,62cyclictest0-21swapper/210:38:352
1040499875,24cyclictest0-21swapper/109:06:311
1040499874,76cyclictest0-21swapper/108:53:081
1040499873,38cyclictest14562-21users10:58:171
1040499873,37cyclictest30321-21ssh10:34:191
10404998716,11cyclictest0-21swapper/109:53:021
1039999873,21cyclictest3131-21diskmemload09:44:300
1039999873,21cyclictest3131-21diskmemload09:44:300
1039999873,21cyclictest24929-21ssh08:03:110
1039999873,20cyclictest2696-21ssh10:42:540
1039999872,77cyclictest1287-21snmpd07:25:500
10407998639,40cyclictest6087-21fgrep09:58:143
1040699865,74cyclictest0-21swapper/208:11:242
10404998635,10cyclictest23124-21crond09:37:461
1040499863,76cyclictest3298-21cat07:32:521
1040499863,40cyclictest22433-21seq08:48:021
1039999867,10cyclictest0-21swapper/010:02:580
1039999864,28cyclictest0-21swapper/006:38:200
1039999863,32cyclictest27920-21grep06:08:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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