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2026-01-01 - 16:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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 the 100 highest latencies:
System rack5slot3s.osadl.org (updated Thu Jan 01, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
324452230163,55sleep10-21swapper/107:06:111
324452230163,55sleep10-21swapper/107:06:111
325712202164,25sleep20-21swapper/207:07:492
325712202164,25sleep20-21swapper/207:07:482
326332201165,24sleep30-21swapper/307:08:383
326332201165,24sleep30-21swapper/307:08:383
327072199163,24sleep00-21swapper/007:09:360
327072199163,24sleep00-21swapper/007:09:360
1451521730,4sleep035499cyclictest11:20:130
448821460,4sleep035499cyclictest10:55:240
366991061,2cyclictest0-21swapper/208:33:002
36699105101,3cyclictest0-21swapper/210:11:292
3669910299,2cyclictest0-21swapper/208:17:572
3669910299,2cyclictest0-21swapper/208:17:572
366998985,3cyclictest0-21swapper/207:57:412
57292720,3sleep09-21rcu_preempt11:00:140
366997067,2cyclictest0-21swapper/207:20:412
320072550,4sleep232009-21kernelversion10:45:192
163772550,4sleep236699cyclictest08:55:242
109352550,7sleep1221ktimersoftd/111:10:221
12992510,1sleep10-21swapper/109:35:191
37299364,23cyclictest2269-21kworker/u8:109:52:143
37299311,3cyclictest0-21swapper/311:56:073
37299302,7cyclictest16803-21munin-run12:40:013
36299290,20cyclictest0-21swapper/108:40:121
372992812,9cyclictest21536-21diskmemload10:35:433
36299271,19cyclictest0-21swapper/111:40:011
36299271,17cyclictest20532-21users07:50:261
35499279,8cyclictest1615-21kworker/0:012:13:320
362992616,6cyclictest18046-21systemd-journal11:25:541
36299261,17cyclictest0-21swapper/110:30:161
36299261,16cyclictest0-21swapper/110:35:171
16702260,3sleep236699cyclictest10:50:182
36699259,4cyclictest0-21swapper/210:15:222
366992513,7cyclictest1075-21systemd-journal12:01:022
36299253,7cyclictest0-21swapper/112:24:411
36299251,7cyclictest1349-21users08:20:261
36299251,17cyclictest0-21swapper/111:50:251
36299251,17cyclictest0-21swapper/111:21:051
36299251,16cyclictest5238-21ntpq08:30:241
36299251,12cyclictest0-21swapper/111:05:091
36299250,20cyclictest0-21swapper/110:09:471
37299248,6cyclictest39-21rcuc/309:30:413
37299247,4cyclictest86950irq/126-enp1s0-07:34:563
37299241,21cyclictest0-21swapper/310:50:133
37299241,11cyclictest5133-21df_inode09:45:133
37299241,11cyclictest4321-21if_enp2s007:15:173
37299241,11cyclictest25549-21users09:15:263
37299241,11cyclictest18543-21NetworkManager07:47:563
37299241,11cyclictest17323-21memory11:25:203
37299241,11cyclictest0-21swapper/308:15:263
37299241,11cyclictest0-21swapper/308:15:263
36299248,10cyclictest0-21swapper/110:53:191
36299247,10cyclictest0-21swapper/112:07:481
36299241,16cyclictest0-21swapper/110:12:111
37299239,3cyclictest31174-21/usr/sbin/munin10:45:183
37299233,18cyclictest39-21rcuc/311:15:153
37299233,10cyclictest0-21swapper/312:15:233
37299232,19cyclictest39-21rcuc/310:05:253
37299231,9cyclictest35702awk08:25:273
37299231,20cyclictest401ktimersoftd/307:35:173
37299231,19cyclictest801-21snmpd12:08:483
37299231,19cyclictest801-21snmpd10:18:193
37299231,19cyclictest401ktimersoftd/310:15:023
37299231,19cyclictest21766-21/usr/sbin/munin09:10:243
37299231,19cyclictest0-21swapper/311:03:213
37299231,14cyclictest0-21swapper/308:58:393
37299231,14cyclictest0-21swapper/308:08:593
37299231,11cyclictest0-21swapper/311:10:373
37299231,10cyclictest27730-21df11:50:163
37299230,11cyclictest826-21lldpd10:40:273
37299230,11cyclictest826-21lldpd10:40:273
36299231,19cyclictest15220-21hddtemp_smartct07:40:151
36299231,16cyclictest10235-21ntp_kernel_pll_09:55:201
362992311,6cyclictest0-21swapper/112:26:391
36299231,16cyclictest0-21swapper/111:03:021
36299231,16cyclictest0-21swapper/110:00:381
36299231,15cyclictest0-21swapper/109:21:131
362992311,4cyclictest22962-21perl10:25:161
36299231,13cyclictest786-21sssd_be09:25:511
36299230,16cyclictest0-21swapper/108:09:461
35499235,15cyclictest23731-21idleruntime-cro09:15:000
35499230,7cyclictest11033-21kworker/0:010:08:180
37299221,9cyclictest0-21swapper/308:02:473
37299221,19cyclictest86950irq/126-enp1s0-09:02:423
37299221,19cyclictest0-21swapper/311:46:083
37299221,19cyclictest0-21swapper/311:05:183
37299221,11cyclictest0-21swapper/310:00:473
37299221,10cyclictest801-21snmpd07:12:433
36699222,5cyclictest25630-21ntpq10:30:222
36299228,6cyclictest563-21systemd-journal07:10:051
36299223,14cyclictest751-21rngd11:55:571
362992214,3cyclictest0-21swapper/111:41:361
36299221,19cyclictest0-21swapper/108:00:191
362992211,6cyclictest0-21swapper/112:14:381
36299221,16cyclictest0-21swapper/109:12:121
36299221,15cyclictest0-21swapper/107:31:531
36299221,15cyclictest0-21swapper/107:20:261
362992211,3cyclictest0-21swapper/109:54:501
36299221,13cyclictest0-21swapper/109:47:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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