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2026-04-16 - 12:14

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
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.

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 Thu Apr 16, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1706779996252,7cyclictest280-21systemd-journal22:40:012
17135092590,4sleep2371rcuc/219:15:052
1706779995547,5cyclictest280-21systemd-journal23:16:132
1706773995443,8cyclictest280-21systemd-journal20:30:000
1706773995041,6cyclictest1817895-21latency_hist21:00:010
1706775994838,7cyclictest1808386-21diskstats20:51:151
1706775994729,16cyclictest1757447-21ntpq19:56:231
1706775994726,15cyclictest2016012-21http00:20:001
1706775994635,8cyclictest1711685-21latency_hist19:15:011
1706773994638,6cyclictest1841741-21ntpq21:21:250
1706775994536,7cyclictest280-21systemd-journal22:35:001
1706773994535,7cyclictest1966535-21latency_hist23:30:010
1706773994534,8cyclictest1882129-21latency_hist22:05:010
1706779994439,3cyclictest1664762-21kworker/u8:1+flush-8:019:51:292
1706775994433,8cyclictest280-21systemd-journal19:20:001
1706773994437,5cyclictest1796990-21ntpq20:36:250
1706773994437,5cyclictest1796990-21ntpq20:36:250
1706775994333,7cyclictest280-21systemd-journal21:56:141
1706775994312,19cyclictest1748773-21apt-get19:51:121
1706773994333,8cyclictest280-21systemd-journal19:15:060
1706773994330,9cyclictest280-21systemd-journal21:06:130
1706773994236,4cyclictest1664762-21kworker/u8:1+events_unbound22:11:190
1706775994134,5cyclictest1917123-21apt-get22:41:111
1706775994131,7cyclictest1852482-21latency_hist21:35:011
1706775994024,12cyclictest280-21systemd-journal21:24:131
1706773994030,8cyclictest1925801-21ntpq22:46:230
170677599391,18cyclictest1867320-21systemd-run21:50:001
1706773993934,3cyclictest1664762-21kworker/u8:1+events_unbound22:06:210
1706773993930,7cyclictest1971451-21sh23:35:000
1706773993929,8cyclictest1945842-21ntpq23:06:250
170677399391,36cyclictest1748243-21munin-run19:50:000
1706775993827,9cyclictest1956575-21cron23:20:001
1706775993824,11cyclictest1833287-21cpuspeed_turbos21:16:141
170677599380,25cyclictest1773375-21taskset20:15:251
1706773993832,4cyclictest1664762-21kworker/u8:1+flush-8:021:46:150
170677599373,27cyclictest0-21swapper/122:11:131
1706775993715,14cyclictest0-21swapper/123:41:191
17065492374,10sleep10-21swapper/119:09:271
170677599368,17cyclictest0-21swapper/100:21:291
1706775993625,9cyclictest1738342-21sendmail19:40:001
1706775993624,10cyclictest280-21systemd-journal00:01:141
170677599361,20cyclictest1931600-21runrttasks22:51:591
1706775993526,7cyclictest1960677-21ntpq23:21:241
1706775993526,6cyclictest280-21systemd-journal23:26:141
1706775993524,9cyclictest1818850-21irqcore21:01:201
1706775993522,10cyclictest1902323-21aten2_r5power_e22:26:131
1706775993522,10cyclictest1902323-21aten2_r5power_e22:26:121
170677599351,19cyclictest1743026-21runrttasks19:41:451
170677599350,22cyclictest1881373-21taskset22:01:291
1706773993531,3cyclictest1961783-21kworker/u8:2+events_unbound00:00:010
1706773993529,4cyclictest280-21systemd-journal20:01:000
1706773993528,5cyclictest1601828-21kworker/u8:0+flush-8:020:11:150
1706779993426,6cyclictest280-21systemd-journal21:25:012
170677599342,16cyclictest0-21swapper/121:26:151
1706775993413,18cyclictest1767371-21ntpq20:06:251
170677599341,21cyclictest1971384-21runrttasks23:34:191
1706775993411,21cyclictest1748278-21awk19:50:001
170677599340,20cyclictest1916683-21runrttasks22:39:071
170677599340,19cyclictest1981598-21runrttasks23:45:311
1706773993425,6cyclictest1832721-21latency_hist21:15:010
170677599338,17cyclictest0-21swapper/119:32:471
170677599336,18cyclictest0-21swapper/120:03:211
170677599333,19cyclictest421rcuog/223:14:541
1706775993321,10cyclictest280-21systemd-journal20:34:131
1706775993321,10cyclictest280-21systemd-journal20:34:131
1706775993320,10cyclictest280-21systemd-journal21:55:001
170677599331,27cyclictest589-21runrttasks23:51:131
170677599331,17cyclictest2010845-21runrttasks00:12:401
170677599331,17cyclictest1778383-21runrttasks20:20:311
170677599331,16cyclictest1827927-21sed21:10:011
170677599330,18cyclictest1793224-21runrttasks20:35:591
170677599330,18cyclictest1793224-21runrttasks20:35:591
1706773993329,3cyclictest1773137-21kworker/u8:3+flush-8:021:31:260
1706773993328,4cyclictest1954867-21kworker/u8:3+events_unbound23:46:180
1706773993327,5cyclictest1601828-21kworker/u8:0+flush-8:020:30:200
1706773993327,5cyclictest1601828-21kworker/u8:0+flush-8:020:30:200
170677599328,16cyclictest0-21swapper/122:19:121
1706775993225,5cyclictest401-21dbus-daemon23:10:011
170677599322,25cyclictest0-21swapper/121:11:131
1706775993218,12cyclictest0-21swapper/100:36:161
170677599321,18cyclictest2027538-21kernelversion00:31:191
170677599321,18cyclictest1995911-21runrttasks23:57:151
1706773993226,4cyclictest1971785-21apt-get23:36:110
170677399321,29cyclictest1-21systemd00:09:150
1706775993122,7cyclictest0-21swapper/120:56:131
170677599311,16cyclictest1975938-21timerwakeupswit23:36:311
170677599310,17cyclictest1787781-21runrttasks20:27:091
170677599310,16cyclictest589-21runrttasks21:41:281
1706773993125,4cyclictest1601828-21kworker/u8:0+flush-8:020:51:200
1706779993021,7cyclictest280-21systemd-journal22:56:132
1706775993023,6cyclictest1802826-21cron20:45:001
170677599302,20cyclictest0-21swapper/122:06:171
1706775993019,9cyclictest0-21swapper/122:21:141
1706773993024,4cyclictest1601828-21kworker/u8:0+flush-8:021:01:170
1706773993022,6cyclictest1732519-21ntpq19:31:250
1706779992925,2cyclictest1902488-21tr22:26:142
1706779992925,2cyclictest1902488-21tr22:26:142
170677599297,7cyclictest0-21swapper/121:39:401
1706775992925,2cyclictest1769139-21irqcore20:11:181
1706775992918,9cyclictest0-21swapper/122:46:131
170677599290,16cyclictest2025997-21runrttasks00:29:141
170677599290,15cyclictest1806919-21ntp_kernel_err20:46:241
1706773992925,3cyclictest1713878-21kworker/u8:3+flush-8:019:26:280
1706773992924,3cyclictest1798336-21aten2_r5power_v20:41:140
1706773992921,6cyclictest1778716-21diskstats20:21:160
18000772280,4sleep375-21kworker/3:1-events20:41:203
1706773992817,9cyclictest1990326-21ntpq23:51:230
1706773992817,8cyclictest1914840-21tr22:36:220
1706773992816,9cyclictest280-21systemd-journal23:01:140
1706779992723,2cyclictest1817597-21grep20:56:322
1706775992718,6cyclictest280-21systemd-journal19:27:131
170677599271,24cyclictest1937115-21/usr/sbin/munin23:01:181
1706775992712,13cyclictest0-21swapper/119:21:311
1706773992721,5cyclictest1601828-21kworker/u8:0+flush-8:021:16:280
1706773992721,4cyclictest2035853-21unixbench_multi00:36:350
1706773992718,7cyclictest280-21systemd-journal19:25:000
1706773992715,6cyclictest18923552chrt22:16:120
1706779992622,2cyclictest1724199-21fschecks_time19:26:152
1706779992621,3cyclictest2016050-21dpkg00:20:002
1706779992621,3cyclictest1778577-21aten2_r5power_v20:21:152
170677599262,21cyclictest0-21swapper/122:56:101
1706773992621,3cyclictest1739597-21kthreadcore19:41:200
1706773992621,3cyclictest1601828-21kworker/u8:0+flush-8:022:40:060
1706773992620,5cyclictest1664762-21kworker/u8:1+flush-8:022:32:440
1706773992620,4cyclictest401-21dbus-daemon23:25:010
18833872250,3sleep21883394-21kthreadcore22:06:192
1706779992521,2cyclictest1947113-21aten2_r5power_e23:11:142
1706779992521,2cyclictest1942153-21aten2_r5power_c23:06:152
1706779992521,2cyclictest1783513-21aten2_r5power_v20:26:142
170677599253,11cyclictest421rcuog/200:09:151
1706773992522,1cyclictest1773137-21kworker/u8:3+events_unbound20:16:150
1706773992522,1cyclictest1664762-21kworker/u8:1+events_unbound19:51:150
1706773992519,4cyclictest280-21systemd-journal21:36:130
1706779992420,2cyclictest1828244-21aten2_r5power_v21:11:142
1706779992420,2cyclictest1768663-21aten2_r5power_v20:11:142
1706779992419,3cyclictest1871860-21unixbench_multi21:51:312
1706779992418,4cyclictest1862047-21unixbench_singl21:41:312
170677999240,9cyclictest18466012cat21:26:252
170677399242,21cyclictest0-21swapper/019:11:320
1706773992422,1cyclictest0-21swapper/000:11:290
1706773992421,2cyclictest1738299-21cron19:40:000
1706773992419,4cyclictest1961783-21kworker/u8:2+flush-8:000:21:200
1706773992419,3cyclictest882-21mta-sts-daemon00:26:240
1706773992419,3cyclictest0-21swapper/000:35:010
1706773992416,5cyclictest1768207-21latency_hist20:10:010
1706773992414,8cyclictest1950818-21ntpq23:11:260
18127572230,3sleep21812756-21apt20:55:012
1706779992320,2cyclictest1991765-21cpuspeed_turbos23:56:142
1706779992320,2cyclictest1907216-21aten2_r5power_c22:31:122
1706779992320,2cyclictest1897423-21aten2_r5power_v22:21:152
1706779992320,2cyclictest1872790-21cpuspeed_turbos21:56:122
170677999230,20cyclictest1707773-21irqrtprio19:11:202
170677399238,2cyclictest19520852grep23:16:130
1706773992319,3cyclictest1873107-21sort21:56:160
1706773992319,2cyclictest1754476-21irqrtprio19:56:180
1706773992318,3cyclictest1773137-21kworker/u8:3+flush-8:020:46:280
1706773992317,4cyclictest280-21systemd-journal21:45:000
1706779992219,2cyclictest2031665-21aten2_r5power_e00:36:172
1706779992218,2cyclictest1877623-21aten2_r5power_v22:01:142
1706779992218,2cyclictest1823530-21fschecks_time21:06:172
1706779992218,2cyclictest0-21swapper/220:46:232
1706779992217,3cyclictest1723018-21timerandwakeup19:21:302
1706779992217,3cyclictest0-21swapper/220:19:592
170677999221,3cyclictest18638272kthreadcore21:46:192
1706779992211,8cyclictest280-21systemd-journal22:55:002
1706773992218,3cyclictest1773137-21kworker/u8:3+flush-8:021:26:410
1706773992215,5cyclictest1921950-21kworker/u8:2+flush-8:022:56:140
1706773992213,7cyclictest280-21systemd-journal22:25:000
170677399221,18cyclictest2011278-21sshd00:15:130
1706779992118,2cyclictest1892576-21cpuspeed_turbos22:16:152
1706779992117,3cyclictest2016623-21aten2_r5power_e00:21:122
1706779992117,2cyclictest1917416-21fschecks_count22:41:162
1706773992117,3cyclictest1773137-21kworker/u8:3+flush-8:021:51:430
1706779992017,2cyclictest1962160-21fschecks_count23:26:162
1706779992017,2cyclictest1798310-21aten2_r5power_p20:41:142
1706779992016,2cyclictest0-21swapper/219:40:002
1706779992016,2cyclictest0-21swapper/200:11:222
1706779992015,3cyclictest1985942-21unixbench_singl23:46:302
1706779992014,4cyclictest0-21swapper/222:50:002
1706779992012,6cyclictest2031263-21turbostat.cron00:35:002
170677399202,12cyclictest583-21snmpd00:01:130
1706773992017,2cyclictest1904412-21grep22:26:200
1706773992017,2cyclictest1904412-21grep22:26:200
1706773992012,6cyclictest1981323-21cron23:45:000
17063992203,11sleep00-21swapper/019:07:280
1706779991915,3cyclictest1941425-21unixbench_multi23:01:312
1706779991915,3cyclictest0-21swapper/221:36:322
1706779991915,2cyclictest0-21swapper/221:05:002
1706779991914,3cyclictest1891636-21unixbench_multi22:11:322
1706779991912,5cyclictest280-21systemd-journal23:30:012
1706779991910,7cyclictest1761271-21tr20:01:202
1706773991915,3cyclictest1929404-21kthreadcore22:51:210
17046712193,9sleep30-21swapper/319:06:243
17019932194,9sleep20-21swapper/219:05:142
170677999189,7cyclictest2026265-21cut00:30:002
1706779991814,3cyclictest0-21swapper/219:50:002
1706779991814,2cyclictest1753835-21aten2_r5power_p19:56:132
1706779991814,2cyclictest0-21swapper/220:31:262
1706779991814,2cyclictest0-21swapper/220:31:262
1706779991813,3cyclictest0-21swapper/221:35:002
1706779991812,4cyclictest280-21systemd-journal23:54:142
170677999179,6cyclictest280-21systemd-journal23:40:002
1706779991714,2cyclictest1728838-21aten2_r5power_c19:31:142
1706779991713,2cyclictest0-21swapper/223:45:012
1706779991711,4cyclictest2000768-21unixbench_singl00:01:312
18813162168,5sleep30-21swapper/322:01:283
170677999162,13cyclictest0-21swapper/200:06:222
1706779991613,2cyclictest0-21swapper/223:20:122
1706779991613,2cyclictest0-21swapper/221:15:372
1706779991612,2cyclictest0-21swapper/220:06:182
1706779991611,3cyclictest0-21swapper/220:36:172
1706779991611,3cyclictest0-21swapper/220:36:172
1706779991611,3cyclictest0-21swapper/219:41:212
20023592132,7sleep30-21swapper/300:06:193
19467232132,6sleep30-21swapper/323:10:013
19260932132,7sleep30-21swapper/322:46:303
19065522133,6sleep30-21swapper/322:26:323
19065522133,6sleep30-21swapper/322:26:323
18723112132,6sleep30-21swapper/321:55:023
18562112133,7sleep30-21swapper/321:36:243
18431192132,7sleep30-21swapper/321:26:163
18380542132,7sleep30-21swapper/321:21:153
18347982133,7sleep30-21swapper/321:16:213
17786282132,7sleep30-21swapper/320:21:163
17506452133,7sleep30-21swapper/319:51:223
20273422122,6sleep30-21swapper/300:31:193
20218492122,6sleep30-21swapper/300:26:183
20164512122,6sleep30-21swapper/300:20:043
20148012122,6sleep30-21swapper/300:16:233
20109962122,6sleep30-21swapper/300:14:383
19968862122,6sleep30-21swapper/300:01:183
19952532121,7sleep30-21swapper/323:56:243
19811992122,6sleep30-21swapper/323:43:243
19714652122,5sleep30-21swapper/323:35:003
19706962122,6sleep30-21swapper/323:31:283
19454832122,6sleep30-21swapper/323:06:243
19397772122,6sleep30-21swapper/323:01:233
19326612120,7sleep30-21swapper/322:56:173
19277762122,6sleep30-21swapper/322:51:203
19011972122,6sleep30-21swapper/322:21:293
18680152122,6sleep30-21swapper/321:51:163
18577792122,6sleep30-21swapper/321:41:133
18502952122,6sleep30-21swapper/321:31:213
18282182122,6sleep30-21swapper/321:11:163
18231092122,6sleep30-21swapper/321:05:143
18182242122,6sleep30-21swapper/321:01:083
18125232122,6sleep30-21swapper/320:52:143
18040652122,6sleep30-21swapper/320:46:203
17734662122,6sleep30-21swapper/320:16:143
17680722122,6sleep30-21swapper/320:08:243
17583542122,5sleep30-21swapper/320:00:013
17549252122,6sleep30-21swapper/319:56:203
17432722122,6sleep30-21swapper/319:45:003
17233532122,6sleep30-21swapper/319:23:133
17107472122,6sleep30-21swapper/319:11:263
20316122112,5sleep30-21swapper/300:36:173
19865052112,5sleep30-21swapper/323:50:143
19816762112,5sleep30-21swapper/323:46:133
19617822112,5sleep30-21swapper/323:25:063
19572322112,5sleep30-21swapper/323:21:173
19519372112,5sleep30-21swapper/323:16:113
19170932112,6sleep30-21swapper/322:41:083
19121312112,5sleep30-21swapper/322:36:153
19068632112,5sleep30-21swapper/322:30:013
18923102112,6sleep30-21swapper/322:16:003
18913932112,5sleep30-21swapper/322:11:313
18824672112,5sleep30-21swapper/322:06:133
18626112112,6sleep30-21swapper/321:45:143
18173072112,5sleep30-21swapper/320:56:313
17931692112,6sleep30-21swapper/320:35:163
17931692112,6sleep30-21swapper/320:35:163
17884012112,5sleep30-21swapper/320:31:153
17884012112,5sleep30-21swapper/320:31:153
17830772112,5sleep30-21swapper/320:25:013
17730652112,6sleep30-21swapper/320:14:303
17435342112,5sleep30-21swapper/319:45:203
17333622111,5sleep30-21swapper/319:35:013
17287452112,6sleep30-21swapper/319:30:473
17278792112,6sleep30-21swapper/319:26:303
17119212112,5sleep30-21swapper/319:15:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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