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2026-05-15 - 00:11

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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 376 highest latencies:
System rack9slot4s (updated Thu May 14, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
52839912701222,43cyclictest5826-21fschecks_time07:25:160
50332656610,31sleep00-21swapper/007:22:570
49082650602,32sleep10-21swapper/107:21:401
5284992391,3cyclictest0-21swapper/107:25:151
140652920,5sleep041ktimersoftd/010:35:260
188612740,3sleep0111rcuc/012:15:160
261262680,2sleep00-21swapper/008:15:250
221282540,3sleep0111rcuc/009:30:260
276732450,4sleep041ktimersoftd/012:40:000
175522430,7sleep00-21swapper/007:55:000
5283994215,5cyclictest7338-21munin-run10:20:000
228292410,5sleep1201rcuc/109:35:011
5283993717,5cyclictest29416-21hwlatdetect08:25:190
528399369,8cyclictest0-21swapper/007:34:580
5283993613,12cyclictest15031-21apt-get07:46:370
282062361,31sleep128347-21cpuspeed_turbos11:15:111
261432350,6sleep026141-21idleruntime-cro11:10:000
175502354,4sleep10-21swapper/109:20:141
9802341,5sleep11007-21ntp_states08:35:231
63872341,5sleep10-21swapper/110:15:241
5283993414,7cyclictest4378-21python11:35:270
5283993411,14cyclictest0-21swapper/010:41:410
133652341,4sleep113385-21iostat_ios12:00:181
5283993313,5cyclictest888-21idleruntime-cro12:55:010
309062331,28sleep130910-21ntp_states11:20:241
280442331,4sleep127014-21/usr/sbin/munin08:20:281
203202331,9sleep00-21swapper/008:00:240
192922331,28sleep119366-21iostat10:50:181
5283993216,6cyclictest18420-21ntp_states07:55:230
5283993216,5cyclictest19735-21iostat_ios09:25:210
5283993215,5cyclictest20007-21unixbench_singl10:50:270
5283993213,6cyclictest10450-21chrt11:52:070
200862321,27sleep120090-21irqstats08:00:201
528399318,13cyclictest18202-21taskset12:14:300
528399312,25cyclictest6785-21ntp_states08:50:250
5283993113,6cyclictest6346-21timerandwakeup11:40:280
5283993112,7cyclictest2122-21wget08:40:120
5283993112,6cyclictest23714-21ntp_states09:35:230
5283993112,10cyclictest0-21swapper/011:46:110
5283993111,5cyclictest0-21swapper/011:10:210
5283993111,11cyclictest0-21swapper/012:24:320
219652311,5sleep00-21swapper/010:55:540
528399308,13cyclictest0-21swapper/012:25:150
528399307,5cyclictest23734-21hddtemp_smartct08:10:160
5283993015,5cyclictest17915-21python10:45:270
5283993015,4cyclictest0-21swapper/009:03:290
5283993014,5cyclictest9461-21cut10:25:120
5283993014,5cyclictest14520-21munin-run12:05:000
5283993011,11cyclictest0-21swapper/011:03:000
5283993011,11cyclictest0-21swapper/008:57:340
5283993011,10cyclictest0-21swapper/011:25:240
5283993011,10cyclictest0-21swapper/009:05:170
5283993010,4cyclictest0-21swapper/010:09:470
5283993010,10cyclictest0-21swapper/010:30:240
43712301,4sleep14482-21fschecks_time08:45:161
268782300,3sleep1201rcuc/108:20:011
132152301,5sleep10-21swapper/107:42:091
97282291,5sleep10-21swapper/109:00:111
95392291,5sleep10-21swapper/109:00:001
91652291,5sleep00-21swapper/010:24:330
74002291,5sleep10-21swapper/108:52:151
54282291,5sleep00-21swapper/010:14:560
5284992919,6cyclictest1841-21tr10:05:101
5283992916,7cyclictest32604-21diskstats10:00:140
5283992914,5cyclictest22255-21cut08:05:250
5283992913,5cyclictest31414-21ls08:30:200
5283992913,5cyclictest14923-21cstates12:05:120
5283992911,8cyclictest0-21swapper/007:35:180
5283992911,6cyclictest2413-21python11:30:260
5283992910,9cyclictest0-21swapper/011:57:510
5283992910,10cyclictest0-21swapper/011:15:110
5283992910,10cyclictest0-21swapper/009:40:120
5283992910,10cyclictest0-21swapper/008:46:590
283062291,5sleep00-21swapper/008:20:390
254122291,5sleep00-21swapper/012:31:100
218082291,5sleep10-21swapper/112:22:481
206522291,5sleep10-21swapper/109:28:001
149332291,5sleep00-21swapper/009:12:140
109992291,5sleep10-21swapper/110:29:041
88092281,5sleep10-21swapper/110:20:501
84222281,5sleep10-21swapper/111:45:331
6102281,5sleep10-21swapper/112:52:171
58642281,5sleep10-21swapper/111:40:201
528499284,17cyclictest11189-21diskstats11:55:151
528499281,23cyclictest28671-21ntp_states12:40:241
528399289,10cyclictest0-21swapper/011:24:530
5283992814,4cyclictest837-21latency08:35:200
5283992814,4cyclictest29594-21ls09:50:270
5283992814,4cyclictest0-21swapper/009:55:160
5283992811,8cyclictest0-21swapper/009:15:190
5283992810,9cyclictest0-21swapper/009:45:250
5283992810,9cyclictest0-21swapper/009:20:200
5283992810,5cyclictest0-21swapper/012:45:200
322992281,5sleep10-21swapper/110:00:031
302362281,5sleep10-21swapper/108:26:101
294012281,5sleep00-21swapper/012:43:280
281412281,5sleep10-21swapper/109:47:381
276072281,5sleep10-21swapper/111:10:491
254222281,5sleep10-21swapper/112:31:171
246892281,5sleep10-21swapper/108:12:181
242032281,5sleep10-21swapper/109:35:541
234842281,5sleep10-21swapper/112:25:401
178252281,5sleep10-21swapper/112:10:341
172872281,5sleep10-21swapper/107:53:331
159572281,5sleep10-21swapper/112:05:401
149702281,5sleep10-21swapper/109:12:401
130672281,4sleep00-21swapper/007:40:380
95512271,5sleep10-21swapper/107:33:461
54052271,5sleep10-21swapper/110:14:431
5284992717,6cyclictest17703-21grep07:55:111
42282271,4sleep10-21swapper/111:35:261
312952271,4sleep10-21swapper/112:48:191
28602271,5sleep10-21swapper/111:31:381
260952271,5sleep10-21swapper/109:40:531
227842271,5sleep10-21swapper/108:07:011
197582271,5sleep10-21swapper/112:16:091
145202271,4sleep10-21swapper/110:36:391
125452271,5sleep10-21swapper/110:30:371
528499264,14cyclictest0-21swapper/107:35:191
528499263,17cyclictest15627-21iostat_ios10:40:191
5284992616,7cyclictest31957-21tail08:30:281
5284992614,7cyclictest14251-21iostat_ios07:45:191
5284992614,6cyclictest12202-21iostat_ios09:05:201
275302261,5sleep10-21swapper/112:38:451
105562261,5sleep10-21swapper/111:53:151
528499252,20cyclictest0-21swapper/108:40:191
5284992517,5cyclictest22-21ksoftirqd/110:57:101
5284992513,8cyclictest0-21swapper/109:16:431
528499251,20cyclictest0-21swapper/109:50:241
257572251,5sleep10-21swapper/111:06:021
528499243,18cyclictest0-21swapper/110:47:161
5284992416,6cyclictest0-21swapper/109:56:161
528499232,16cyclictest31955-21/usr/sbin/munin11:25:301
5284992313,6cyclictest2695-21snmpd11:04:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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