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2026-07-29 - 13:14

OSADL QA Farm on Real-time of Mainline Linux

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

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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  Phytec
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 highest latencies:
System rackbslot5s.osadl.org (updated Wed Jul 29, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1921437995040,7cyclictest2033638-21grep00:30:243
1921437994835,9cyclictest391ktimers/319:50:153
1921433994842,4cyclictest2002268-21kworker/u8:2+events_unbound23:01:362
1921437994738,5cyclictest2027245-21cron00:15:003
1921428994738,5cyclictest1956479-21ls20:50:001
1921437994635,7cyclictest1970576-21fschecks_time21:30:173
1921433994636,8cyclictest311ktimers/200:35:132
1921437994536,5cyclictest1927668-21fschecks_count19:25:173
1921422994539,4cyclictest1961500-21kworker/u8:2+events_unbound21:11:280
1921433994437,4cyclictest1970139-21idleruntime-cro21:30:002
1921433994332,8cyclictest2001254-21munin-plugin-st23:00:002
1921422994335,4cyclictest1972036-21apt-key21:35:020
1921433994231,7cyclictest2021929-21sendmail23:59:592
1921433994231,7cyclictest2021929-21sendmail00:00:002
1921433994126,4cyclictest131rcu_preempt22:44:332
1921433994126,4cyclictest131rcu_preempt22:44:322
1921433994123,5cyclictest131rcu_preempt19:47:032
1921428994131,7cyclictest208-21systemd-logind19:31:111
1921433994034,4cyclictest1935775-21kworker/u8:1+events_unbound19:56:152
1921433994033,4cyclictest311ktimers/200:20:132
1921428994032,4cyclictest0-21swapper/120:40:011
1921422994032,6cyclictest121ktimers/000:20:130
1921422994029,8cyclictest2021926-21cron00:00:000
1921422994029,8cyclictest2021926-21cron00:00:000
1921437993930,6cyclictest2028494-21unixbench_multi00:15:293
1921437993830,5cyclictest2004669-21munin-plugin-st23:10:013
1921433993826,9cyclictest1944063-21grep20:10:252
1921433993823,5cyclictest1973365-21kworker/u8:0+events_unbound21:56:422
1921433993821,4cyclictest131rcu_preempt22:18:282
1921433993818,5cyclictest1977050-21kworker/u8:1-events_freezable_power_21:48:072
1921428993817,10cyclictest131rcu_preempt21:45:141
192142299382,9cyclictest11-21ksoftirqd/019:15:140
1921422993828,6cyclictest0-21swapper/020:50:270
1921422993828,6cyclictest0-21swapper/000:25:260
1921433993731,4cyclictest1954429-21kworker/u8:2+events_unbound20:41:232
1921433993728,4cyclictest0-21swapper/219:45:012
1921433993725,7cyclictest0-21swapper/223:30:252
1921433993724,4cyclictest131rcu_preempt21:35:222
1921433993721,4cyclictest131rcu_preempt23:35:492
1921433993717,10cyclictest131rcu_preempt21:20:192
1921433993715,12cyclictest131rcu_preempt20:50:012
1921428993729,4cyclictest1968442-21munin-plugin-st21:25:011
1921422993728,6cyclictest1983720-21unixbench_multi22:05:250
192142299370,33cyclictest0-21swapper/020:05:120
1921437993628,4cyclictest0-21swapper/300:09:593
1921437993626,7cyclictest1982489-21cron22:05:003
1921433993630,4cyclictest2023348-21kworker/u8:1+events_unbound00:01:482
1921433993626,7cyclictest0-21swapper/223:20:012
1921433993619,5cyclictest131rcu_preempt20:03:292
1921433993619,5cyclictest131rcu_preempt19:30:012
1921433993616,9cyclictest131rcu_preempt20:34:152
1921433993616,11cyclictest131rcu_preempt23:50:192
1921433993616,11cyclictest131rcu_preempt23:50:182
1921422993626,6cyclictest0-21swapper/023:30:260
1921422993622,10cyclictest1974029-21latency_hist21:40:000
1921437993527,4cyclictest0-21swapper/323:30:003
1921433993529,4cyclictest1930871-21kworker/u8:3+events_unbound19:38:432
1921433993527,6cyclictest1945846-21kworker/u8:2+events_unbound20:16:192
1921433993526,6cyclictest1957748-21unixbench_singl20:50:282
1921433993525,7cyclictest1981164-21fschecks_count22:00:162
1921433993521,11cyclictest311ktimers/220:05:122
1921433993519,4cyclictest131rcu_preempt21:30:242
1921433993518,4cyclictest131rcu_preempt19:31:032
1921433993516,10cyclictest131rcu_preempt21:15:242
1921433993515,10cyclictest131rcu_preempt23:45:172
1921428993527,4cyclictest0-21swapper/120:00:001
1921422993526,5cyclictest0-21swapper/019:25:270
1921422993525,6cyclictest0-21swapper/022:45:000
1921422993525,6cyclictest0-21swapper/022:45:000
1921422993523,4cyclictest19766452basename21:45:260
1921433993427,5cyclictest1990694-21kworker/u8:2+events_unbound22:31:362
1921433993425,4cyclictest0-21swapper/222:40:002
1921433993421,4cyclictest131rcu_preempt00:34:552
1921433993420,4cyclictest131rcu_preempt22:54:562
1921433993418,5cyclictest131rcu_preempt21:05:142
1921433993417,5cyclictest131rcu_preempt21:00:152
1921433993417,4cyclictest131rcu_preempt23:12:312
1921433993416,4cyclictest131rcu_preempt20:35:142
1921433993413,10cyclictest131rcu_preempt21:50:472
1921428993427,4cyclictest0-21swapper/122:30:001
1921428993426,4cyclictest0-21swapper/121:30:251
1921428993425,4cyclictest0-21swapper/120:10:171
1921422993425,4cyclictest0-21swapper/023:40:240
1921437993328,3cyclictest2006010-21kworker/u8:2+events_unbound23:11:393
1921437993326,4cyclictest1968051-21kworker/u8:0+events_unbound21:21:273
1921437993326,4cyclictest1959882-21munin-plugin-st21:00:013
1921437993326,4cyclictest1959882-21munin-plugin-st21:00:003
1921437993323,6cyclictest0-21swapper/322:30:013
192143399335,16cyclictest32-21ksoftirqd/200:05:282
1921433993327,4cyclictest2016166-21unixbench_singl23:40:252
1921433993319,4cyclictest131rcu_preempt00:25:252
1921433993318,9cyclictest131rcu_preempt22:25:012
1921433993316,4cyclictest131rcu_preempt22:45:172
1921433993316,4cyclictest131rcu_preempt22:27:302
1921433993316,4cyclictest131rcu_preempt19:15:572
1921433993315,4cyclictest131rcu_preempt23:24:042
1921433993313,5cyclictest131rcu_preempt20:55:262
1921433993313,5cyclictest131rcu_preempt20:55:252
1921428993325,4cyclictest0-21swapper/123:36:411
1921428993323,6cyclictest0-21swapper/120:16:171
1921428993322,8cyclictest1973831-21apt-config21:40:001
1921422993326,5cyclictest2011298-21kworker/u8:0+events_unbound23:36:430
1921422993326,3cyclictest0-21swapper/020:35:170
1921422993323,7cyclictest1993987-21grep22:35:240
1921422993323,6cyclictest0-21swapper/023:15:270
1921422993319,5cyclictest1959703-21kworker/u8:0+events_unbound21:09:220
1921422993316,5cyclictest1961500-21kworker/u8:2+events_unbound21:42:070
1921422993314,8cyclictest131rcu_preempt00:17:120
1921437993224,4cyclictest0-21swapper/322:55:263
1921437993223,6cyclictest0-21swapper/321:40:013
1921437993222,6cyclictest0-21swapper/320:05:003
192143399325,14cyclictest32-21ksoftirqd/219:25:022
1921433993219,5cyclictest131rcu_preempt19:50:242
1921433993216,5cyclictest131rcu_preempt21:41:322
1921433993215,4cyclictest131rcu_preempt21:11:552
1921433993214,5cyclictest131rcu_preempt00:10:452
1921433993214,4cyclictest131rcu_preempt23:05:112
1921433993214,11cyclictest131rcu_preempt22:10:102
1921433993213,4cyclictest0-21swapper/219:14:322
1921428993223,5cyclictest0-21swapper/120:45:001
192142299328,4cyclictest131rcu_preempt19:40:120
1921422993223,5cyclictest0-21swapper/021:55:260
1921422993222,6cyclictest0-21swapper/023:50:280
1921422993222,6cyclictest0-21swapper/023:50:270
1921437993124,4cyclictest2006780-21fschecks_time23:15:183
1921437993121,7cyclictest0-21swapper/322:45:243
192143399316,16cyclictest32-21ksoftirqd/222:05:172
1921433993116,4cyclictest131rcu_preempt00:15:122
1921433993113,4cyclictest131rcu_preempt23:26:542
1921428993124,4cyclictest2021932-21munin-plugin-st23:59:591
1921428993124,4cyclictest2021932-21munin-plugin-st00:00:001
1921428993124,4cyclictest2016782-21apt-key23:45:001
1921422993127,2cyclictest0-21swapper/000:00:120
1921422993122,5cyclictest0-21swapper/020:20:240
1921422993113,5cyclictest2030501-21kworker/u8:1+events_unbound00:30:380
1921422993112,6cyclictest11-21ksoftirqd/020:55:280
1921422993112,6cyclictest11-21ksoftirqd/020:55:270
1921437993023,5cyclictest1983954-21kworker/u8:1+events_unbound22:11:333
1921437993022,4cyclictest0-21swapper/320:25:263
1921437993021,5cyclictest0-21swapper/320:40:013
1921437993021,5cyclictest0-21swapper/300:39:593
192143799301,19cyclictest0-21swapper/323:55:133
192143799301,19cyclictest0-21swapper/323:55:133
1921433993010,12cyclictest32-21ksoftirqd/220:25:162
1921428993023,4cyclictest0-21swapper/119:35:251
1921428993022,4cyclictest0-21swapper/122:20:251
1921428993022,4cyclictest0-21swapper/119:55:001
192142299308,6cyclictest11-21ksoftirqd/023:25:000
1921422993022,5cyclictest2035653-21systemd00:38:230
1921422993020,6cyclictest1937241-21grep19:50:270
1921437992923,4cyclictest1995900-21kworker/u8:0+events_unbound22:51:363
1921437992921,4cyclictest0-21swapper/323:20:263
1921428992921,5cyclictest0-21swapper/123:10:251
1921428992921,5cyclictest0-21swapper/119:30:001
1921428992921,4cyclictest0-21swapper/122:50:251
1921428992921,4cyclictest0-21swapper/121:30:011
1921428992920,6cyclictest53-21kcompactd020:10:011
1921428992920,6cyclictest2002517-21unixbench_multi23:00:291
1921428992919,6cyclictest0-21swapper/122:20:011
1921422992922,3cyclictest0-21swapper/021:50:290
1921422992920,7cyclictest1949998-21kworker/u8:2+events_unbound20:30:420
1921422992913,9cyclictest131rcu_preempt21:25:010
1921437992824,2cyclictest0-21swapper/323:00:143
1921437992820,4cyclictest0-21swapper/322:40:253
1921437992820,4cyclictest0-21swapper/322:40:253
1921437992820,4cyclictest0-21swapper/320:51:233
1921437992820,4cyclictest0-21swapper/320:25:013
1921437992820,4cyclictest0-21swapper/320:20:013
1921437992819,6cyclictest1926018-21cut19:20:173
1921428992821,4cyclictest0-21swapper/123:30:241
1921428992821,4cyclictest0-21swapper/120:00:241
1921428992820,4cyclictest0-21swapper/121:00:121
1921428992819,4cyclictest0-21swapper/122:10:161
192142299289,6cyclictest11-21ksoftirqd/019:10:300
192142299288,10cyclictest11-21ksoftirqd/023:10:220
192142299287,10cyclictest11-21ksoftirqd/022:00:150
1921422992823,3cyclictest1927286-21munin-plugin-st19:25:010
1921422992822,4cyclictest0-21swapper/022:15:150
1921422992820,6cyclictest1947586-21kworker/u8:1+events_unbound20:46:240
1921422992818,6cyclictest0-21swapper/019:55:150
192142299280,5cyclictest0-21swapper/023:00:150
192143799273,3cyclictest131rcu_preempt21:55:143
1921437992719,4cyclictest0-21swapper/321:15:183
1921437992719,4cyclictest0-21swapper/321:00:253
1921437992718,6cyclictest0-21swapper/300:25:003
192143799271,3cyclictest131rcu_preempt23:40:123
1921428992718,5cyclictest0-21swapper/120:30:011
192142299278,6cyclictest131rcu_preempt20:40:130
192142299277,11cyclictest11-21ksoftirqd/022:45:280
1921422992720,5cyclictest1927001-21kworker/u8:2+events_unbound19:30:030
1921422992719,4cyclictest1945748-21grep20:15:280
1921422992716,4cyclictest131rcu_preempt19:49:080
192142299271,12cyclictest0-21swapper/019:39:360
192143799269,5cyclictest2011298-21kworker/u8:0+events_unbound23:38:023
1921437992619,5cyclictest1961500-21kworker/u8:2+events_unbound21:27:273
1921437992619,5cyclictest1941074-21kworker/u8:1+events_unbound20:08:413
1921437992618,4cyclictest0-21swapper/322:05:253
1921437992616,6cyclictest0-21swapper/323:50:273
1921437992616,6cyclictest0-21swapper/323:50:273
1921437992615,6cyclictest0-21swapper/320:30:253
1921428992620,4cyclictest1990694-21kworker/u8:2+events_unbound22:46:351
1921428992619,3cyclictest0-21swapper/123:15:171
1921428992618,5cyclictest2025350-21idleruntime-cro00:10:001
1921428992618,5cyclictest0-21swapper/123:49:591
1921428992616,7cyclictest2035651-21systemd00:38:241
192142299268,12cyclictest131rcu_preempt22:25:220
192142299268,11cyclictest11-21ksoftirqd/022:54:400
192142299264,11cyclictest11-21ksoftirqd/021:16:460
1921422992620,4cyclictest1988979-21kworker/u8:0+events_unbound22:33:210
1921422992616,4cyclictest1943337-21kworker/u8:0+events_unbound20:12:300
1921422992614,4cyclictest131rcu_preempt23:05:210
1921422992614,4cyclictest131rcu_preempt20:00:220
1921422992612,4cyclictest131rcu_preempt22:13:410
192143799256,7cyclictest131rcu_preempt00:25:263
192143799255,3cyclictest131rcu_preempt19:40:003
1921437992519,4cyclictest1921417-21cyclictest21:10:013
1921437992519,3cyclictest0-21swapper/321:45:263
1921437992519,3cyclictest0-21swapper/321:10:183
1921437992518,5cyclictest1954429-21kworker/u8:2+events_unbound20:43:353
1921437992514,7cyclictest0-21swapper/319:10:293
1921428992519,4cyclictest2032284-21kworker/u8:0+events_unbound00:31:521
1921428992519,3cyclictest0-21swapper/100:15:281
1921428992518,4cyclictest0-21swapper/119:10:201
1921428992517,5cyclictest2030689-21munin-plugin-st00:24:591
1921428992517,4cyclictest0-21swapper/123:20:181
1921428992517,4cyclictest0-21swapper/119:45:251
1921428992513,8cyclictest0-21swapper/121:40:261
192142299259,9cyclictest131rcu_preempt00:12:060
192142299258,9cyclictest11-21ksoftirqd/020:25:140
1921422992520,3cyclictest1921417-21cyclictest21:25:160
1921422992519,4cyclictest2006010-21kworker/u8:2+events_unbound23:25:220
1921422992514,3cyclictest131rcu_preempt21:00:300
1921422992511,8cyclictest131rcu_preempt22:20:190
1921422992511,4cyclictest131rcu_preempt00:07:590
192142299250,13cyclictest0-21swapper/023:45:230
1921437992418,4cyclictest1956170-21kworker/u8:0+events_unbound20:49:023
1921437992418,3cyclictest0-21swapper/319:40:243
1921437992414,6cyclictest0-21swapper/322:15:283
1921437992414,6cyclictest0-21swapper/319:55:253
1921437992414,3cyclictest40-21ksoftirqd/321:50:293
1921437992412,9cyclictest1925587-21basename19:20:013
1921428992418,4cyclictest1980214-21timerwakeupswit21:55:251
1921428992418,4cyclictest1914097-21kworker/u8:1+events_unbound19:21:091
1921428992416,4cyclictest0-21swapper/122:35:011
1921428992414,6cyclictest0-21swapper/120:21:181
1921428992412,7cyclictest0-21swapper/122:00:281
1921422992417,5cyclictest1999514-21kworker/u8:1+events_unbound22:57:040
192143799238,7cyclictest131rcu_preempt23:45:063
1921437992317,4cyclictest2011298-21kworker/u8:0+events_unbound23:30:163
1921437992315,5cyclictest391ktimers/322:39:593
1921428992317,3cyclictest0-21swapper/122:35:241
1921428992315,5cyclictest0-21swapper/121:50:291
1921428992313,6cyclictest0-21swapper/119:40:261
192143799226,8cyclictest131rcu_preempt19:30:243
1921437992216,3cyclictest0-21swapper/319:45:283
1921437992215,5cyclictest1941074-21kworker/u8:1+events_unbound20:13:083
1921437992212,7cyclictest40-21ksoftirqd/321:40:233
1921437992212,7cyclictest1992262-21grep22:30:273
1921437992211,7cyclictest0-21swapper/322:20:173
192142899222,3cyclictest19829612idleruntime22:05:161
192142899222,3cyclictest131rcu_preempt21:12:261
1921428992216,3cyclictest0-21swapper/123:50:291
1921428992216,3cyclictest0-21swapper/123:50:291
1921428992216,3cyclictest0-21swapper/121:06:261
1921428992216,3cyclictest0-21swapper/120:55:201
1921428992216,3cyclictest0-21swapper/120:55:201
1921428992215,4cyclictest0-21swapper/123:25:161
1921428992215,4cyclictest0-21swapper/121:20:011
1921428992215,3cyclictest0-21swapper/100:15:011
1921428992213,6cyclictest0-21swapper/120:30:231
1921428992115,4cyclictest1994717-21cpu22:40:131
1921428992115,4cyclictest1994717-21cpu22:40:121
1921428992115,3cyclictest0-21swapper/100:00:221
1921428992114,4cyclictest0-21swapper/100:25:251
1921428992011,6cyclictest1957330-21wc20:50:251
192142899199,7cyclictest2003726-21ntp_kernel_pll_23:05:241
1921428991911,5cyclictest0-21swapper/119:15:181
1921428991813,3cyclictest1999771-21/usr/sbin/munin22:55:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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