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2025-12-10 - 14:01

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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.

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 792 highest latencies:
System rack2slot7s.osadl.org (updated Wed Dec 10, 2025 12:39:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1845723994942,4cyclictest1957770-21ls11:15:000
1845723994942,4cyclictest1957770-21ls11:15:000
1845723994926,14cyclictest151ktimers/008:59:400
1845724994840,5cyclictest1913277-21munin-run10:00:011
1845723994839,3cyclictest0-21swapper/009:34:210
1845723994739,5cyclictest1868234-21systemd-run08:25:020
1845724994637,6cyclictest1848751-21systemd-run07:20:021
1845725994536,5cyclictest1871211-21systemd-run08:35:012
1845725994437,4cyclictest956-21mta-sts-daemon11:19:282
1845725994436,5cyclictest1948753-21switchtime10:59:352
1845725994436,5cyclictest1919285-21systemd-run10:10:012
1845725994436,5cyclictest1866739-21systemd-run08:20:012
1845725994436,5cyclictest1857737-21latency_hist07:50:022
1845724994436,5cyclictest956-21mta-sts-daemon08:50:021
1845723994429,12cyclictest1994739-21sshd12:12:490
1845723994429,12cyclictest1994739-21sshd12:12:490
1845724994335,5cyclictest1930243-21head10:29:121
1845725994236,3cyclictest0-21swapper/212:30:012
1845725994234,5cyclictest1964276-21cron11:25:012
1845724994235,4cyclictest1937580-21idleruntime-cro10:40:011
1845723994225,13cyclictest1964437-21latency_hist11:25:020
1845725994133,5cyclictest1937555-21systemctl10:40:012
1845725994132,6cyclictest453-21systemd-logind09:10:022
1845724994133,5cyclictest422-21dbus-daemon12:05:011
1845723994132,4cyclictest0-21swapper/009:59:290
184572399412,33cyclictest1899756-21ssh09:39:250
1845725994032,4cyclictest957-21mta-sts-daemon10:24:262
1845725994031,6cyclictest1973923-21head11:39:352
1845725994031,5cyclictest1854706-21cut07:40:002
1845725994030,6cyclictest266-21systemd-journal08:55:012
1845724994032,5cyclictest1-21systemd11:25:021
1845725993932,4cyclictest1980278-21timerwakeupswit11:49:362
1845725993931,5cyclictest1943884-21munin-plugin-st10:50:012
1845724993932,4cyclictest1919062-21unixbench_multi10:09:471
1845724993932,4cyclictest1894328-21latency_hist09:30:011
1845724993932,4cyclictest1863735-21latency_hist08:10:021
1845724993931,5cyclictest422-21dbus-daemon11:15:001
1845724993931,5cyclictest422-21dbus-daemon11:15:001
1845724993928,8cyclictest422-21dbus-daemon09:25:011
1845723993930,7cyclictest0-21swapper/007:40:000
1845723993928,8cyclictest1881699-21diskmemload12:24:330
1845725993831,4cyclictest1900495-21cron09:40:012
1845725993829,6cyclictest1055298-21cups-browsed09:59:332
1845724993831,4cyclictest1859196-21munin-plugin-st07:55:011
1845724993830,5cyclictest1927801-21ssh10:24:281
1845723993831,4cyclictest1982709-21fschecks_count11:54:180
1845723993829,6cyclictest1961206-21latency_hist11:20:020
1845725993732,2cyclictest0-21swapper/212:24:352
1845725993731,3cyclictest0-21swapper/209:34:342
1845724993726,8cyclictest2008680-21cpuspeed12:34:141
1845725993629,3cyclictest0-21swapper/212:34:222
1845725993628,5cyclictest421-21avahi-daemon11:44:192
1845725993627,6cyclictest1946468-21unixbench-2d10:54:362
1845724993631,3cyclictest1999819-21awk12:20:011
1845724993627,6cyclictest1-21systemd10:15:021
1845723993630,4cyclictest1916467-21latency_hist10:05:020
1845723993630,3cyclictest1872936-21kworker/u8:3+rpciod08:45:010
1845723993629,5cyclictest1922355-21munin-plugin-st10:15:010
1845723993621,12cyclictest1885587-21cron09:15:010
1845723993618,12cyclictest151ktimers/008:09:310
1845725993528,4cyclictest1940562-21kworker/u8:6-nfsiod10:45:012
1845725993527,5cyclictest1862134-21sed08:04:412
1845725993522,8cyclictest491-21gdbus12:39:342
1845724993528,4cyclictest1970115-21ssh11:34:281
1845724993528,4cyclictest1967016-21mailstats11:29:331
1845724993527,5cyclictest1854744-21systemd-run07:40:011
1845724993526,6cyclictest422-21dbus-daemon12:14:111
1845724993526,6cyclictest422-21dbus-daemon12:14:111
1845724993524,8cyclictest1983340-21mailstats11:54:331
1845723993528,4cyclictest1993513-21cron12:10:010
1845723993528,4cyclictest1993513-21cron12:10:010
1845723993525,7cyclictest151ktimers/011:34:240
1845723993525,4cyclictest955-21mta-sts-daemon11:46:360
1845723993517,13cyclictest12450irq/32-eth011:39:230
1845725993428,3cyclictest0-21swapper/211:29:202
1845725993428,3cyclictest0-21swapper/208:49:292
1845725993426,5cyclictest1848700-21cron07:20:012
1845725993425,5cyclictest1865201-21idleruntime-cro08:15:012
1845725993422,9cyclictest1982556-21aten_r2power_vo11:54:162
1845724993429,2cyclictest0-21swapper/110:45:021
1845724993426,5cyclictest1-21systemd10:20:021
1845724993425,7cyclictest2006584-21latency_hist12:30:021
1845724993425,6cyclictest1869674-21sed08:29:351
1845723993425,6cyclictest1055298-21cups-browsed12:27:540
1845725993328,2cyclictest0-21swapper/209:45:012
1845725993326,4cyclictest1925401-21cron10:20:012
1845725993326,3cyclictest0-21swapper/210:34:262
1845725993326,3cyclictest0-21swapper/209:18:442
1845725993325,5cyclictest1992209-21aten2.4-expect12:09:132
1845725993325,5cyclictest1992209-21aten2.4-expect12:09:132
1845725993325,5cyclictest1884413-21fschecks_time09:14:152
1845725993312,4cyclictest171rcu_preempt09:29:282
1845724993326,4cyclictest1986924-21unixbench_multi11:59:361
1845724993326,4cyclictest1866688-21cron08:20:011
1845724993325,5cyclictest955-21mta-sts-daemon07:44:231
1845724993325,5cyclictest422-21dbus-daemon11:04:211
1845724993325,5cyclictest422-21dbus-daemon11:04:211
1845724993325,5cyclictest1860692-21ls08:00:011
1845724993324,6cyclictest422-21dbus-daemon11:50:021
184572399334,22cyclictest1055298-21cups-browsed07:29:290
1845723993322,8cyclictest0-21swapper/010:20:010
1845725993226,3cyclictest0-21swapper/210:15:012
1845725993224,5cyclictest1853153-21unixbench_singl07:34:372
1845724993226,3cyclictest0-21swapper/109:49:321
1845724993224,5cyclictest1877090-21tail08:54:331
1845724993224,5cyclictest1055298-21cups-browsed09:14:111
1845724993223,6cyclictest957-21mta-sts-daemon10:49:251
1845724993223,6cyclictest2003187-21systemd-run12:25:011
184572399324,16cyclictest12450irq/32-eth011:44:240
1845723993226,4cyclictest1928094-21xargs10:24:350
1845723993225,4cyclictest955-21mta-sts-daemon10:44:270
1845723993221,8cyclictest1967217-21timerwakeupswit11:29:340
184572599314,13cyclictest1881699-21diskmemload11:06:472
184572599314,13cyclictest1881699-21diskmemload11:06:472
1845725993125,3cyclictest0-21swapper/212:15:012
1845725993125,3cyclictest0-21swapper/212:15:012
1845725993125,3cyclictest0-21swapper/212:00:022
1845725993124,4cyclictest1956668-21kernelversion11:14:172
1845725993124,4cyclictest1956668-21kernelversion11:14:172
1845725993123,5cyclictest1999813-21munin-run12:20:012
1845725993123,5cyclictest1850222-21cron07:25:012
1845724993123,5cyclictest2013351-21sendmail12:40:011
1845724993123,5cyclictest1934493-21cron10:35:011
1845724993122,6cyclictest1871218-21systemd-run08:35:021
1845724993121,7cyclictest1973293-21ntp_kernel_pll_11:39:221
1845723993124,4cyclictest959-21mta-sts-daemon09:21:340
1845723993120,8cyclictest1894075-21unixbench_multi09:29:350
1845723993117,8cyclictest12450irq/32-eth011:04:230
1845723993117,8cyclictest12450irq/32-eth011:04:230
1845725993024,3cyclictest0-21swapper/211:33:322
1845725993024,3cyclictest0-21swapper/210:29:342
1845725993022,5cyclictest1906961-21idleruntime-cro09:50:012
1845725993022,5cyclictest1856174-21unixbench_singl07:44:362
1845725993020,7cyclictest1909403-21ntp_kernel_pll_09:54:262
184572499302,7cyclictest955-21mta-sts-daemon11:17:011
1845724993025,4cyclictest1845722-21cyclictest10:56:291
1845724993025,2cyclictest0-21swapper/110:05:011
1845724993024,3cyclictest0-21swapper/109:45:011
1845724993023,4cyclictest1869720-21kworker/u8:0-xprtiod08:45:011
1845724993022,5cyclictest1896790-21diskmemload09:34:251
1845724993022,5cyclictest1055298-21cups-browsed10:50:551
184572399303,17cyclictest437-21mta-sts-daemon08:54:260
1845723993025,3cyclictest959-21mta-sts-daemon10:31:180
1845723993016,3cyclictest0-21swapper/009:51:260
184572399301,25cyclictest1918603-21ssh10:09:390
1845725992924,2cyclictest0-21swapper/208:00:012
1845725992921,5cyclictest1847202-21cron07:15:012
184572499292,8cyclictest1976556-21ntpq11:44:241
1845724992923,4cyclictest956-21mta-sts-daemon09:37:501
1845724992922,3cyclictest0-21swapper/109:19:231
1845724992921,5cyclictest1910170-21ssh09:55:011
1845724992921,5cyclictest1862227-21systemd-run08:05:011
1845723992923,4cyclictest959-21mta-sts-daemon07:14:230
1845723992923,3cyclictest0-21swapper/010:54:230
1845723992922,5cyclictest1865229-21latency_hist08:15:020
1845723992915,9cyclictest12450irq/32-eth010:29:210
1845725992823,2cyclictest0-21swapper/208:09:402
1845725992822,3cyclictest0-21swapper/211:04:352
1845725992822,3cyclictest0-21swapper/211:04:352
1845725992821,4cyclictest957-21mta-sts-daemon12:02:362
1845725992821,4cyclictest1859203-21idleruntime-cro07:55:012
1845725992821,3cyclictest0-21swapper/210:05:022
1845725992820,5cyclictest1890191-21fschecks_time09:24:152
1845725992817,8cyclictest1851111-21ntp_kernel_pll_07:29:252
1845724992821,4cyclictest959-21mta-sts-daemon12:05:351
1845724992821,4cyclictest959-21mta-sts-daemon12:05:351
1845724992820,5cyclictest1055298-21cups-browsed09:05:431
1845723992822,4cyclictest1907037-21latency_hist09:50:020
1845723992820,4cyclictest0-21swapper/012:34:120
1845723992818,7cyclictest1998880-21missed_timers12:19:200
1845723992817,8cyclictest1986255-21needreboot11:59:210
1845723992816,9cyclictest0-21swapper/010:49:350
184572399281,22cyclictest1989669-21ssh12:04:240
1845723992811,8cyclictest0-21swapper/007:34:280
1845724992721,3cyclictest0-21swapper/111:09:351
1845724992721,3cyclictest0-21swapper/111:09:351
1845724992720,4cyclictest433-21polkitd08:14:301
1845724992719,5cyclictest1872684-21cron08:40:011
1845724992718,7cyclictest1857653-21head07:49:371
184572399274,13cyclictest1881699-21diskmemload09:44:560
1845723992722,3cyclictest955-21mta-sts-daemon10:36:030
1845723992721,4cyclictest1859138-21head07:54:370
1845723992721,4cyclictest1856207-21cron07:45:000
1845723992721,3cyclictest0-21swapper/008:00:020
1845723992720,5cyclictest1887390-21fschecks_time09:19:170
1845723992719,6cyclictest422-21dbus-daemon11:00:010
1845723992718,6cyclictest1055298-21cups-browsed12:39:230
1845723992717,7cyclictest1871729-21fschecks_count08:39:160
1845725992619,4cyclictest956-21mta-sts-daemon08:24:242
1845725992619,4cyclictest955-21mta-sts-daemon08:57:122
1845724992619,5cyclictest0-21swapper/107:25:021
1845724992618,5cyclictest421-21avahi-daemon07:14:311
1845723992620,4cyclictest1880744-21fschecks_count09:09:160
1845723992619,4cyclictest957-21mta-sts-daemon07:49:240
1845723992618,6cyclictest1848623-21sed07:19:350
1845725992517,5cyclictest1871549-21aten_r2power_fr08:39:122
1845724992519,3cyclictest0-21swapper/107:35:011
1845724992516,6cyclictest1851618-21tail07:29:361
1845723992518,5cyclictest491-21gdbus08:28:410
1845723992518,5cyclictest0-21swapper/008:20:010
1845723992518,3cyclictest12550irq/33-eth008:49:300
1845723992516,7cyclictest1055298-21cups-browsed08:04:320
184572399251,20cyclictest1954188-21ntpq11:09:240
184572399251,20cyclictest1954188-21ntpq11:09:240
184572599244,10cyclictest956-21mta-sts-daemon08:29:262
1845725992417,4cyclictest957-21mta-sts-daemon08:44:242
1845724992416,5cyclictest1880199-21cron09:05:011
184572399241,18cyclictest657-21snmpd08:34:250
1845725992316,4cyclictest433-21polkitd09:03:092
1845724992316,4cyclictest0-21swapper/108:59:521
1845724992314,7cyclictest1867254-21fschecks_count08:24:161
1845723992315,5cyclictest1850169-21unixbench_singl07:24:400
1845723992213,7cyclictest956-21mta-sts-daemon09:04:260
1845724992014,3cyclictest1845730-21kthreadd07:10:011
1845723992015,3cyclictest0-21swapper/007:10:010
1845725991911,5cyclictest1-21systemd07:10:012
184572699152,9cyclictest0-21swapper/312:34:223
184572699152,9cyclictest0-21swapper/310:54:313
184572699152,6cyclictest0-21swapper/311:49:233
184572699151,8cyclictest0-21swapper/309:59:253
184572699151,7cyclictest0-21swapper/311:04:273
184572699151,7cyclictest0-21swapper/311:04:273
184572699151,7cyclictest0-21swapper/309:44:293
184572699142,7cyclictest0-21swapper/309:39:303
184572699142,6cyclictest0-21swapper/310:49:243
184572699142,5cyclictest0-21swapper/307:14:253
184572699141,8cyclictest0-21swapper/312:39:313
184572699141,7cyclictest0-21swapper/312:29:253
184572699141,7cyclictest0-21swapper/312:04:333
184572699141,7cyclictest0-21swapper/310:04:263
184572699141,6cyclictest0-21swapper/311:39:213
184572699141,6cyclictest0-21swapper/310:34:223
184572699141,6cyclictest0-21swapper/310:29:203
184572699141,6cyclictest0-21swapper/308:24:223
184572699132,7cyclictest0-21swapper/312:09:223
184572699132,7cyclictest0-21swapper/312:09:223
184572699132,5cyclictest0-21swapper/308:39:243
184572699131,7cyclictest0-21swapper/311:09:213
184572699131,7cyclictest0-21swapper/311:09:213
184572699131,7cyclictest0-21swapper/310:24:253
184572699131,7cyclictest0-21swapper/310:19:323
184572699131,7cyclictest0-21swapper/309:54:243
184572699131,7cyclictest0-21swapper/309:29:263
184572699131,7cyclictest0-21swapper/309:14:213
184572699131,6cyclictest0-21swapper/312:14:293
184572699131,6cyclictest0-21swapper/312:14:293
184572699131,6cyclictest0-21swapper/311:14:203
184572699131,6cyclictest0-21swapper/311:14:203
184572699131,6cyclictest0-21swapper/310:39:283
184572699131,6cyclictest0-21swapper/309:09:223
184572699131,6cyclictest0-21swapper/308:34:223
184572699131,6cyclictest0-21swapper/308:14:233
184572699131,6cyclictest0-21swapper/308:04:313
184572699131,6cyclictest0-21swapper/307:44:253
184572699131,6cyclictest0-21swapper/307:39:223
184572699131,6cyclictest0-21swapper/307:34:273
184572699122,5cyclictest0-21swapper/312:17:533
184572699122,5cyclictest0-21swapper/310:59:253
184572699122,5cyclictest0-21swapper/308:50:013
184572699121,8cyclictest0-21swapper/311:34:263
184572699121,7cyclictest0-21swapper/311:54:273
184572699121,7cyclictest0-21swapper/309:34:223
184572699121,6cyclictest0-21swapper/311:59:223
184572699121,6cyclictest0-21swapper/311:24:213
184572699121,6cyclictest0-21swapper/310:09:363
184572699121,6cyclictest0-21swapper/309:19:223
184572699121,6cyclictest0-21swapper/309:04:223
184572699121,6cyclictest0-21swapper/308:29:233
184572699121,6cyclictest0-21swapper/307:49:263
184572699121,6cyclictest0-21swapper/307:29:273
184572699121,5cyclictest0-21swapper/311:29:253
184572699121,5cyclictest0-21swapper/307:19:243
184572699121,4cyclictest0-21swapper/308:44:183
184572699120,7cyclictest0-21swapper/309:23:123
184572699112,5cyclictest0-21swapper/308:59:413
184572699112,5cyclictest0-21swapper/307:25:023
184572699111,6cyclictest0-21swapper/312:24:233
184572699111,6cyclictest0-21swapper/311:41:493
184572699111,6cyclictest0-21swapper/311:19:183
184572699111,6cyclictest0-21swapper/310:12:253
184572699111,6cyclictest0-21swapper/308:54:283
184572699111,6cyclictest0-21swapper/307:54:273
184572699111,5cyclictest0-21swapper/309:45:453
184572699111,5cyclictest0-21swapper/307:59:223
184572699101,5cyclictest0-21swapper/308:19:253
184572699101,4cyclictest0-21swapper/308:07:583
18457269991,6cyclictest0-21swapper/310:44:273
18457269981,4cyclictest0-21swapper/307:10:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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