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2026-04-25 - 18:59

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 Sat Apr 25, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
102939910439,12cyclictest0-21swapper/010:19:540
10297991023,92cyclictest0-21swapper/109:05:041
102939910138,10cyclictest0-21swapper/008:30:060
102939910118,10cyclictest1419-21runrttasks08:27:140
10293991004,42cyclictest0-21swapper/009:15:010
1029899994,86cyclictest12095-21ssh08:05:142
1029799984,86cyclictest0-21swapper/109:49:581
1029399974,47cyclictest0-21swapper/009:50:080
1029899964,84cyclictest0-21swapper/207:49:402
1029899954,68cyclictest0-21swapper/208:04:412
1029899954,68cyclictest0-21swapper/208:04:412
1029899954,66cyclictest0-21swapper/208:54:502
1029799954,83cyclictest0-21swapper/109:16:301
10293999515,36cyclictest23253-21grep07:35:020
10293999435,13cyclictest0-21swapper/008:34:560
10293999433,14cyclictest0-21swapper/009:05:120
1029899924,81cyclictest0-21swapper/210:04:512
10293999234,15cyclictest0-21swapper/009:44:550
1029899914,79cyclictest0-21swapper/210:19:022
1029899914,70cyclictest0-21swapper/209:57:022
1029799913,82cyclictest0-21swapper/109:09:591
1029899904,79cyclictest0-21swapper/209:14:522
1029899904,68cyclictest0-21swapper/206:30:112
1029899904,66cyclictest0-21swapper/209:44:492
1029899904,49cyclictest19727-21ntpdc09:05:052
1029799904,79cyclictest0-21swapper/109:54:521
1029799903,78cyclictest29197-21runrttasks08:30:561
1029899894,78cyclictest15716-21taskset08:59:572
1029899894,78cyclictest1419-21runrttasks10:00:022
1029899893,51cyclictest121850irq/46-eth008:50:022
1029899893,50cyclictest0-21swapper/208:40:412
1029899893,50cyclictest0-21swapper/208:40:412
1029799893,80cyclictest0-21swapper/107:20:511
1029799893,79cyclictest0-21swapper/107:25:181
1029799893,79cyclictest0-21swapper/107:25:181
1029899886,75cyclictest30748-21cpuspeed08:34:532
1029899884,45cyclictest5612-21fschecks_count08:44:572
1029899884,45cyclictest5612-21fschecks_count08:44:572
1029899883,78cyclictest4989-21ps07:55:102
1029899883,78cyclictest0-21swapper/209:20:282
1029899883,78cyclictest0-21swapper/207:16:252
1029799884,77cyclictest0-21swapper/109:37:451
1029799883,77cyclictest0-21swapper/110:04:551
1029899875,74cyclictest0-21swapper/209:11:072
1029899874,65cyclictest30812-21tr05:50:012
1029899874,65cyclictest0-21swapper/209:39:372
1029899873,77cyclictest0-21swapper/210:33:432
1029899873,77cyclictest0-21swapper/208:12:562
1029899873,77cyclictest0-21swapper/207:31:072
1029799874,76cyclictest0-21swapper/107:05:111
1029799873,78cyclictest6419-21sendmail_mailtr08:45:091
1029799873,78cyclictest6419-21sendmail_mailtr08:45:091
1029799872,79cyclictest0-21swapper/108:14:401
1029899864,75cyclictest0-21swapper/210:10:282
1029899864,75cyclictest0-21swapper/210:10:282
1029899864,75cyclictest0-21swapper/207:39:462
1029899864,64cyclictest0-21swapper/209:52:012
1029899864,64cyclictest0-21swapper/205:38:312
1029899863,65cyclictest0-21swapper/208:15:562
1029799864,75cyclictest1419-21runrttasks07:34:091
1029799864,74cyclictest18150-21munin-run09:04:371
1029799863,77cyclictest0-21swapper/110:17:071
1029799863,76cyclictest14767-21munin-node09:45:101
1029799863,75cyclictest636-21fschecks_count07:50:011
1029799863,75cyclictest29707-21missed_timers09:20:021
1029799863,74cyclictest9417-21munin-node08:50:021
1029899854,75cyclictest0-21swapper/207:49:452
1029899854,65cyclictest0-21swapper/208:27:452
1029899854,64cyclictest0-21swapper/209:33:182
1029899854,51cyclictest0-21swapper/210:22:322
1029799854,74cyclictest0-21swapper/109:39:541
1029799854,74cyclictest0-21swapper/105:50:031
1029799853,76cyclictest0-21swapper/109:29:491
10297998513,51cyclictest0-21swapper/107:19:421
1029899844,71cyclictest23670-21munin-node07:35:092
1029899844,58cyclictest0-21swapper/206:50:032
1029899843,66cyclictest0-21swapper/209:40:072
1029799844,65cyclictest0-21swapper/108:19:411
1029799843,75cyclictest0-21swapper/110:30:011
1029799843,75cyclictest0-21swapper/108:36:351
1029799843,74cyclictest0-21swapper/107:10:281
1029899834,65cyclictest0-21swapper/210:25:242
1029899834,61cyclictest0-21swapper/208:32:082
1029899834,50cyclictest0-21swapper/208:21:452
1029899833,73cyclictest0-21swapper/205:40:092
1029899833,65cyclictest702-21ssh09:25:042
1029899833,65cyclictest702-21ssh09:25:042
1029899833,65cyclictest0-21swapper/207:24:462
1029899833,65cyclictest0-21swapper/207:24:462
1029899833,64cyclictest6774-21ssh07:10:152
1029899833,58cyclictest14901-21cat05:15:122
1029799834,72cyclictest0-21swapper/107:46:451
1029799833,73cyclictest0-21swapper/108:21:571
1029799833,73cyclictest0-21swapper/108:00:111
1029799833,73cyclictest0-21swapper/108:00:111
1029899824,71cyclictest0-21swapper/206:45:112
1029899824,71cyclictest0-21swapper/206:45:112
1029899824,71cyclictest0-21swapper/206:10:022
1029799824,71cyclictest0-21swapper/107:35:301
1029799824,70cyclictest0-21swapper/110:10:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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