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2026-04-07 - 18:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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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  Intel
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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: ondemand
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack5slot4s.osadl.org (updated Tue Apr 07, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
164104221000,3chrt75-21kworker/3:1-events11:56:293
15966792840,7chrt75-21kworker/3:1+mm_percpu_wq11:11:353
13787492660,3sleep20-21swapper/207:35:002
13787492660,3sleep20-21swapper/207:35:002
16178742610,3chrt75-21kworker/3:1+events11:36:233
1352179996050,7cyclictest1562471-21latency_hist10:40:011
16093622580,3chrt281rcuc/111:26:261
16282812520,2sleep375-21kworker/3:1+events11:46:273
1352174995225,15cyclictest1612132-21cron11:30:000
1352179995042,6cyclictest1637385-21/usr/sbin/munin11:56:361
1352179994941,5cyclictest280-21systemd-journal08:20:001
1352179994741,4cyclictest1325160-21kworker/u8:2+flush-8:009:11:331
1352179994726,18cyclictest280-21systemd-journal07:25:001
1352179994640,4cyclictest1477873-21apt-get09:15:011
1352174994631,12cyclictest280-21systemd-journal11:45:480
1352179994437,5cyclictest1552803-21kworker/u8:3+flush-8:010:56:351
1352179994427,14cyclictest1372908-21ntpq07:26:301
1352174994428,14cyclictest1483102-21systemd-run09:20:000
1352174994424,18cyclictest0-21swapper/010:45:000
1352179994332,9cyclictest1393587-21cron07:50:001
1352174994325,16cyclictest1656495-21unixbench_singl12:11:380
1352174994325,16cyclictest1477564-21unixbench_singl09:11:360
1352174994213,22cyclictest1458664-21cpuspeed08:56:210
1352179994125,13cyclictest1488419-21aten2_r5power_c09:26:211
1352174994124,15cyclictest1657173-21aten2_r5power_c12:16:200
1352174994123,16cyclictest1389212-21cpuspeed_turbos07:46:220
1352182994029,8cyclictest1637203-21cat11:55:012
1352179994028,10cyclictest1470498-21kthreadcore09:06:271
1352179994025,13cyclictest1502932-21systemd-run09:40:001
1352174994031,7cyclictest1364218-21apt-get07:21:180
1352174994022,16cyclictest1562552-21latency_hist10:40:010
135217499401,24cyclictest589-21runrttasks11:41:170
13518742404,11sleep10-21swapper/107:08:441
1352182993911,14cyclictest1536907-21ntpq10:11:322
1352174993920,16cyclictest1671623-21latency_hist12:30:010
1352174993912,14cyclictest0-21swapper/012:10:000
135217499390,31cyclictest1543446-21idleruntime10:21:240
135217499390,31cyclictest1543446-21idleruntime10:21:240
135217499390,28cyclictest1356948-21taskset07:14:270
135217499390,24cyclictest589-21runrttasks09:00:290
135217999386,4cyclictest0-21swapper/108:39:541
135217999384,10cyclictest0-21swapper/109:21:341
1352179993830,5cyclictest1512776-21latency_hist09:50:011
1352179993828,8cyclictest1437259-21ntpq08:31:311
1352179993810,12cyclictest0-21swapper/108:02:581
1352174993830,6cyclictest1671947-21/usr/sbin/munin12:31:370
1352174993819,16cyclictest1388636-21latency_hist07:45:010
135217499380,25cyclictest589-21runrttasks10:34:390
135218299376,17cyclictest1592689-21apt-get11:11:172
135217999378,4cyclictest0-21swapper/112:02:481
135217999378,2cyclictest0-21swapper/108:51:381
135217999378,14cyclictest0-21swapper/109:52:301
1352174993722,13cyclictest1665764-21needreboot12:21:310
1352174993721,14cyclictest1681526-21cron12:39:590
1352174993721,14cyclictest1637128-21latency_hist11:55:010
1352174993720,15cyclictest1413436-21cron08:10:000
1352174993717,18cyclictest1616766-21unixbench_multi11:31:370
135217499370,25cyclictest1502733-21runrttasks09:38:090
135217499370,24cyclictest1423605-21runrttasks08:20:520
135217499370,23cyclictest589-21runrttasks09:41:500
135217499370,23cyclictest1547933-21taskset10:25:570
135218299367,13cyclictest1503260-21apt-get09:41:212
1352182993610,13cyclictest1637410-21apt-get11:56:202
135217999364,7cyclictest0-21swapper/112:36:181
135217999364,7cyclictest0-21swapper/112:16:191
135217999364,6cyclictest0-21swapper/109:01:181
1352179993621,12cyclictest0-21swapper/107:40:001
1352179993619,15cyclictest1617097-21cron11:35:001
1352179993617,17cyclictest876-21mta-sts-daemon07:41:281
1352179993617,16cyclictest0-21swapper/108:46:341
1352179993614,20cyclictest280-21systemd-journal08:56:441
135217499367,18cyclictest589-21runrttasks07:15:110
135217499364,22cyclictest0-21swapper/007:50:020
1352174993630,4cyclictest1591738-21grep11:06:390
135217499362,22cyclictest0-21swapper/010:54:300
1352174993619,15cyclictest0-21swapper/008:40:000
135217499361,23cyclictest589-21runrttasks09:49:370
135217499361,22cyclictest589-21runrttasks09:57:020
135217499361,21cyclictest589-21runrttasks09:07:590
135217499360,24cyclictest589-21runrttasks08:33:280
135217499360,23cyclictest589-21runrttasks10:57:230
135217499360,23cyclictest589-21runrttasks10:47:320
135217499360,23cyclictest589-21runrttasks07:36:500
135217499360,22cyclictest589-21runrttasks08:18:380
1352182993511,12cyclictest1591244-21ntpq11:06:312
135217999358,13cyclictest0-21swapper/108:05:151
135217999357,4cyclictest0-21swapper/111:20:581
135217999355,6cyclictest0-21swapper/107:51:201
135217999354,7cyclictest0-21swapper/112:21:201
135217999354,7cyclictest0-21swapper/111:01:201
135217999354,6cyclictest0-21swapper/112:31:201
135217999354,5cyclictest0-21swapper/109:31:191
135217999354,2cyclictest0-21swapper/108:20:281
135217999353,8cyclictest0-21swapper/107:56:181
1352179993525,8cyclictest1363045-21ntpq07:16:321
135217999352,15cyclictest583-21snmpd07:31:331
135217999352,15cyclictest583-21snmpd07:31:331
1352179993520,12cyclictest0-21swapper/111:40:001
135217499358,19cyclictest421rcuog/211:10:390
135217499357,16cyclictest589-21runrttasks11:15:290
135217499357,15cyclictest0-21swapper/008:43:190
1352174993519,14cyclictest1641682-21unixbench_singl11:56:380
1352174993517,16cyclictest1488417-21wget09:26:210
135217499351,22cyclictest589-21runrttasks09:31:070
135217499351,22cyclictest589-21runrttasks08:50:380
135217499351,22cyclictest589-21runrttasks08:14:100
135217499351,21cyclictest589-21runrttasks09:20:150
135217499351,12cyclictest1582515-21runrttasks11:00:400
135217499350,26cyclictest1523852-21irqcore10:01:250
135217499350,23cyclictest589-21runrttasks10:09:590
135217499350,22cyclictest589-21runrttasks12:01:160
135217499350,20cyclictest1449828-21cut08:46:250
135218299346,17cyclictest1646843-21sshd12:03:482
135218299346,16cyclictest1680762-21ntpq12:36:332
1352182993417,10cyclictest1627312-21apt-get11:46:202
1352182993411,11cyclictest1516884-21ntpq09:51:312
1352182993410,11cyclictest1432377-21ntpq08:26:332
135217999348,12cyclictest0-21swapper/111:05:331
135217999345,7cyclictest0-21swapper/110:41:201
135217999344,6cyclictest0-21swapper/111:16:181
135217999344,5cyclictest0-21swapper/109:56:181
135217999343,5cyclictest0-21swapper/110:26:191
1352179993415,17cyclictest0-21swapper/111:11:271
135217499343,22cyclictest0-21swapper/008:26:220
135217499343,16cyclictest0-21swapper/010:16:200
135217499340,22cyclictest589-21runrttasks11:37:320
135217499340,21cyclictest589-21runrttasks11:24:400
135217499340,21cyclictest589-21runrttasks07:31:160
135217499340,21cyclictest589-21runrttasks07:31:160
135218299339,12cyclictest1626206-21ntpq11:41:332
135218299337,16cyclictest1422552-21ntpq08:16:352
135218299337,12cyclictest1523268-21apt-get10:01:192
135217999334,7cyclictest0-21swapper/112:06:201
135217999333,6cyclictest0-21swapper/110:11:181
135217999332,10cyclictest1568465-21sed10:46:251
1352179993316,14cyclictest0-21swapper/111:55:011
1352179993316,14cyclictest0-21swapper/111:46:301
1352174993326,4cyclictest1403511-21apt08:00:000
135217499330,20cyclictest589-21runrttasks09:54:590
135218299328,12cyclictest1581369-21ntpq10:56:312
135218299327,14cyclictest1586336-21ntpq11:01:332
135218299326,9cyclictest1657876-21sed12:16:252
135218299326,8cyclictest1412943-21/usr/sbin/munin08:06:392
135218299326,16cyclictest1566597-21ntpq10:41:342
135218299325,16cyclictest1541847-21ntpq10:16:312
1352182993228,2cyclictest14035162chrt08:00:002
1352182993219,8cyclictest1379022-21apt-get07:36:202
135217999324,6cyclictest0-21swapper/110:21:191
135217999324,6cyclictest0-21swapper/110:21:191
135217999324,6cyclictest0-21swapper/108:26:201
135217999323,6cyclictest0-21swapper/110:16:171
1352179993227,3cyclictest1418383-21apt08:15:001
1352179993225,5cyclictest1577288-21latency_hist10:55:011
1352179993224,6cyclictest1443655-21apt-get08:41:181
135217999321,13cyclictest1623123-21sed11:41:241
1352174993216,14cyclictest0-21swapper/007:30:000
135218299319,11cyclictest1502056-21ntpq09:36:312
135218299317,12cyclictest1437259-21ntpq08:31:312
135218299316,15cyclictest1443096-21sshd08:37:442
135218299316,12cyclictest1467141-21ntpq09:01:302
135217999313,7cyclictest0-21swapper/110:06:301
1352179993112,16cyclictest0-21swapper/112:11:241
135218299309,9cyclictest1522200-21ps09:56:352
135218299307,5cyclictest1394661-21ps07:51:272
135218299306,10cyclictest1572359-21munin-run10:50:012
135218299303,17cyclictest1373766-21munin-run07:30:002
1352182993015,9cyclictest1552918-21apt-get10:31:172
135217999302,13cyclictest1356206-21ntpq07:11:321
1352174993016,12cyclictest0-21swapper/008:01:220
1352174993013,15cyclictest0-21swapper/010:11:220
135218299298,4cyclictest1655995-21ntpq12:11:332
135218299298,4cyclictest1651079-21ntpq12:06:322
135218299297,11cyclictest1482252-21ntpq09:16:332
135218299297,11cyclictest1407647-21ntpq08:01:302
135218299296,11cyclictest1597963-21perl11:16:222
135218299295,8cyclictest1512824-21sed09:49:592
1352182992926,2cyclictest1562152-21unixbench_singl10:36:382
1352182992925,2cyclictest1662391-21fschecks_count12:21:242
1352182992921,6cyclictest1606804-21grep11:21:392
1352182992911,5cyclictest1672429-21/usr/sbin/munin12:31:252
135217999298,4cyclictest0-21swapper/112:26:251
135217999295,5cyclictest0-21swapper/110:31:201
135217999290,10cyclictest1503979-21sed09:41:261
1352174992910,17cyclictest1352169-21cyclictest07:10:010
135218299288,10cyclictest1611380-21ntpq11:26:332
135218299287,4cyclictest1616364-21ntpq11:31:352
135218299287,11cyclictest1457381-21ntp_states08:51:352
135218299287,11cyclictest1417557-21ntpq08:11:332
135218299286,5cyclictest1459410-21cut08:56:262
135217999281,9cyclictest1524803-21kthreadcore10:01:261
135218299277,10cyclictest1532577-21sshd10:07:442
135218299276,5cyclictest1573785-21cat10:51:282
135218299276,4cyclictest1473729-21awk09:11:222
135218299275,11cyclictest1618335-21irqstats11:36:262
135218299275,11cyclictest1488042-21munin-run09:25:002
135218299275,11cyclictest1357207-21munin-node07:15:012
135218299273,10cyclictest1352774-21hddtemp_smartct07:11:222
135218299267,4cyclictest1387853-21ntpq07:41:322
135218299266,10cyclictest1472936-21munin-run09:10:002
135218299265,11cyclictest1428254-21munin-run08:25:002
1352182992617,7cyclictest1368491-21unixbench_singl07:21:372
135218299256,4cyclictest1547903-21sshd10:25:352
135218299253,6cyclictest1547131-21find10:21:382
135218299253,6cyclictest1547131-21find10:21:382
1352182992520,3cyclictest1447900-21unixbench_multi08:41:382
1352182992519,4cyclictest1667563-21irqcore12:26:242
1352182992519,4cyclictest1492624-21unixbench_multi09:26:382
135218299247,9cyclictest0-21swapper/209:31:392
135218299235,4cyclictest1388915-21sshd07:45:442
135218299232,4cyclictest1450751-21ps08:46:262
13512562194,9sleep20-21swapper/207:06:362
13473552183,8sleep30-21swapper/307:05:323
16787042144,6sleep30-21swapper/312:36:283
16470142132,6sleep30-21swapper/312:05:023
16233292133,6sleep30-21swapper/311:41:263
15822062132,7sleep30-21swapper/311:00:013
15567142132,7sleep30-21swapper/310:31:313
15327502132,6sleep30-21swapper/310:10:003
14633092136,5sleep30-21swapper/309:00:223
14482482132,5sleep30-21swapper/308:45:013
13930072132,7sleep30-21swapper/307:46:383
13686462136,5sleep30-21swapper/307:23:103
13569902132,7sleep30-21swapper/307:15:003
16757982122,6sleep30-21swapper/312:31:343
16626072122,6sleep30-21swapper/312:21:273
16576312122,6sleep30-21swapper/312:16:253
16536572122,6sleep30-21swapper/312:11:283
16081312122,6sleep30-21swapper/311:26:253
16061702122,6sleep30-21swapper/311:21:323
15978672122,6sleep30-21swapper/311:16:223
15625662122,5sleep30-21swapper/310:40:023
15515242122,7sleep30-21swapper/310:26:303
15426662120,8sleep30-21swapper/310:20:003
15371342122,6sleep30-21swapper/310:11:373
15229442122,5sleep30-21swapper/310:00:013
15136512122,6sleep30-21swapper/309:51:263
14982542122,6sleep30-21swapper/309:36:183
14883612122,6sleep30-21swapper/309:26:183
14858542122,6sleep30-21swapper/309:21:293
14729462122,5sleep30-21swapper/309:10:013
14687492122,6sleep30-21swapper/309:06:243
14534962122,6sleep30-21swapper/308:51:193
14390072122,6sleep30-21swapper/308:36:223
14326062122,6sleep30-21swapper/308:26:393
14134712122,5sleep30-21swapper/308:10:023
14087212122,6sleep30-21swapper/308:05:083
13844832122,6sleep30-21swapper/307:41:243
13729152122,6sleep30-21swapper/307:26:323
16670382113,5sleep30-21swapper/312:26:213
16462362112,5sleep30-21swapper/312:01:373
16322502112,5sleep30-21swapper/311:51:213
16123662112,5sleep30-21swapper/311:30:023
15873972112,5sleep30-21swapper/311:05:023
15863272112,5sleep30-21swapper/311:01:333
15723402112,5sleep30-21swapper/310:50:013
15698732112,6sleep30-21swapper/310:46:283
15577732112,5sleep30-21swapper/310:35:373
15430022114,5sleep30-21swapper/310:21:003
15430022114,5sleep30-21swapper/310:21:003
15226862112,5sleep30-21swapper/309:57:243
15073602112,5sleep30-21swapper/309:41:393
14936922112,5sleep30-21swapper/309:31:243
14821602112,5sleep30-21swapper/309:16:313
14584822112,5sleep30-21swapper/308:56:213
14527292112,5sleep30-21swapper/308:46:373
14236682110,7sleep30-21swapper/308:21:213
14190142112,5sleep30-21swapper/308:16:243
14037552112,5sleep30-21swapper/308:00:023
13994762112,5sleep30-21swapper/307:56:253
13941922112,5sleep30-21swapper/307:51:243
13789012112,5sleep30-21swapper/307:35:053
13737452112,5sleep30-21swapper/307:30:013
13737452112,5sleep30-21swapper/307:30:013
13632322112,5sleep30-21swapper/307:16:363
15080922102,5sleep30-21swapper/309:45:043
14334072102,5sleep30-21swapper/308:30:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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