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2026-05-09 - 17:51

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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 376 highest latencies:
System rack4slot1s.osadl.org (updated Sat May 09, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2003821200,2sleep020040-21grep11:52:270
2003821200,2sleep020040-21grep11:52:270
2003821200,2sleep020040-21grep11:52:270
242121130,3sleep01390-21/usr/sbin/munin11:02:420
242121130,3sleep01390-21/usr/sbin/munin11:02:420
242121130,3sleep01390-21/usr/sbin/munin11:02:420
2929321090,2sleep00-21swapper/009:22:360
2929321090,2sleep00-21swapper/009:22:360
2929321090,2sleep00-21swapper/009:22:360
78472980,3chrt0-21swapper/209:52:332
111222980,2sleep011126-21head11:27:340
111222980,2sleep011126-21head11:27:340
290802780,3sleep20-21swapper/209:22:342
290802780,3sleep20-21swapper/209:22:342
290802780,3sleep20-21swapper/209:22:342
320292740,3chrt32032-21proc_pri08:02:400
320292740,3chrt32032-21proc_pri08:02:400
49092710,2sleep04912-21cut08:17:360
49092710,2sleep04912-21cut08:17:360
49092710,2sleep04912-21cut08:17:360
29802680,3sleep30-21swapper/312:32:343
29802680,3sleep30-21swapper/312:32:343
53922630,2chrt5394-21fschecks_time11:12:321
244562630,4sleep20-21swapper/209:07:472
244562630,4sleep20-21swapper/209:07:472
242382610,1sleep123763-21/usr/sbin/munin07:42:361
242382610,1sleep123763-21/usr/sbin/munin07:42:361
321762580,3sleep20-21swapper/210:57:332
321762580,3sleep20-21swapper/210:57:332
321762580,3sleep20-21swapper/210:57:332
236852570,4chrt0-21swapper/007:42:260
236852570,4chrt0-21swapper/007:42:260
281482530,4chrt0-21swapper/212:12:352
281482530,4chrt0-21swapper/212:12:352
55572520,2sleep20-21swapper/211:12:332
139722510,3sleep00-21swapper/008:42:320
139722510,3sleep00-21swapper/008:42:320
128662480,2sleep113006-21timerandwakeup08:37:441
1267599471,6cyclictest8109-21cat08:27:280
1267599471,6cyclictest8109-21cat08:27:280
1267599471,6cyclictest8109-21cat08:27:280
1267599461,4cyclictest24614-21seq09:09:500
1267599461,4cyclictest24614-21seq09:09:500
1267599440,7cyclictest25390-21chrt12:05:250
1267599440,7cyclictest25390-21chrt12:05:250
1267599430,8cyclictest749-21runrttasks12:24:140
1267599430,8cyclictest749-21runrttasks12:24:140
1267599421,8cyclictest749-21runrttasks12:31:060
1267599421,8cyclictest749-21runrttasks12:31:060
1267599421,8cyclictest749-21runrttasks12:31:060
1267599421,7cyclictest749-21runrttasks09:14:030
1267599421,7cyclictest749-21runrttasks09:14:030
1267599421,7cyclictest749-21runrttasks09:14:030
1267599421,6cyclictest19027-21taskset08:55:050
1267599401,13cyclictest5069-21/usr/sbin/munin11:12:440
1267599395,25cyclictest16313-21unixbench_multi10:12:450
1267599391,10cyclictest2714-21/usr/sbin/munin12:32:420
1267599391,10cyclictest2714-21/usr/sbin/munin12:32:420
1267599391,10cyclictest22673-21df10:32:320
1267599391,10cyclictest22673-21df10:32:320
25572380,2sleep12629-21strings09:37:371
25572380,2sleep12629-21strings09:37:371
12675993828,8cyclictest29120-21cron07:57:200
12675993828,8cyclictest29120-21cron07:57:200
1267599381,9cyclictest30253-21fschecks_count10:52:330
1267599381,9cyclictest12671-21ntp_states08:37:400
1267599381,7cyclictest16829-21basename11:42:340
1267599381,7cyclictest16829-21basename11:42:340
1267599371,8cyclictest8663-21taskset08:27:370
1267599371,8cyclictest8663-21taskset08:27:370
1267599371,7cyclictest8935-21cpu11:22:310
1267599371,7cyclictest8935-21cpu11:22:310
1267599371,7cyclictest23921-21grep07:42:330
1267599371,7cyclictest23921-21grep07:42:330
1267599371,7cyclictest15122-21date10:12:320
1267599371,7cyclictest11519-21fschecks_count10:02:310
1267599371,7cyclictest11519-21fschecks_count10:02:310
1267599371,6cyclictest26338-21/usr/sbin/munin10:42:430
1267599371,6cyclictest26338-21/usr/sbin/munin10:42:430
1267599371,6cyclictest26338-21/usr/sbin/munin10:42:430
1267599371,13cyclictest749-21runrttasks12:12:360
1267599371,13cyclictest749-21runrttasks12:12:360
1267599371,12cyclictest25734-21/usr/sbin/munin10:37:440
1267599371,12cyclictest25734-21/usr/sbin/munin10:37:440
1267599371,12cyclictest25734-21/usr/sbin/munin10:37:440
1267599371,11cyclictest31414-21ntp_states09:27:400
1267599371,11cyclictest31414-21ntp_states09:27:400
1267599371,11cyclictest31414-21ntp_states09:27:400
12676993621,8cyclictest90-1pr/ttyS011:40:191
12676993621,8cyclictest90-1pr/ttyS011:40:191
1267599366,28cyclictest23594-21ls10:32:420
1267599366,28cyclictest23594-21ls10:32:420
1267599366,26cyclictest29347-21/usr/sbin/munin07:57:320
1267599366,26cyclictest29347-21/usr/sbin/munin07:57:320
1267599361,9cyclictest19655-21tune2fs08:57:310
1267599361,8cyclictest8351-21ntp_states09:52:400
1267599361,8cyclictest25907-21gltestperf07:47:330
1267599361,8cyclictest21379-21ls09:02:310
1267599361,8cyclictest21379-21ls09:02:310
1267599361,8cyclictest14678-21systemd-journal11:42:190
1267599361,8cyclictest14678-21systemd-journal11:42:190
1267599361,7cyclictest4591-21/usr/sbin/munin12:37:320
1267599361,7cyclictest28452-21seq09:21:030
1267599361,7cyclictest28452-21seq09:21:030
1267599361,7cyclictest22013-21date11:57:290
1267599361,7cyclictest17636-21chrt07:23:330
12675993616,18cyclictest0-21swapper/010:53:170
12675993616,18cyclictest0-21swapper/010:53:170
12675993616,18cyclictest0-21swapper/010:53:170
1267599361,4cyclictest10805-21ntp_states08:32:390
1267599361,4cyclictest10805-21ntp_states08:32:390
1267599361,33cyclictest31205-21readlink12:22:200
1267599361,33cyclictest31205-21readlink12:22:200
12675993613,20cyclictest0-21swapper/010:07:390
12675993612,22cyclictest18177-21unixbench_multi10:17:430
12675993612,22cyclictest18177-21unixbench_multi10:17:430
1267599361,11cyclictest3798-21users08:12:440
12676993528,5cyclictest850-21acpi12:27:311
12676993528,5cyclictest6065-21cron08:22:201
12676993528,5cyclictest6065-21cron08:22:201
12676993528,5cyclictest6065-21cron08:22:201
1267599351,9cyclictest8146-21/usr/sbin/munin11:17:430
1267599351,9cyclictest8146-21/usr/sbin/munin11:17:430
1267599351,8cyclictest835-21grep09:32:390
1267599351,8cyclictest835-21grep09:32:390
1267599351,8cyclictest26498-21ntp_kernel_pll_12:07:390
1267599351,8cyclictest26498-21ntp_kernel_pll_12:07:390
1267599351,8cyclictest26498-21ntp_kernel_pll_12:07:390
1267599351,7cyclictest29723-21sshd10:50:450
1267599351,7cyclictest29723-21sshd10:50:450
1267599351,4cyclictest3237-21/usr/sbin/munin11:07:380
1267599351,4cyclictest3237-21/usr/sbin/munin11:07:380
1267599351,4cyclictest3237-21/usr/sbin/munin11:07:380
1267599351,10cyclictest2128-21grep09:37:330
1267599351,10cyclictest2128-21grep09:37:330
1267599350,7cyclictest19879-21date07:32:230
1267599350,7cyclictest19879-21date07:32:230
1267599350,33cyclictest15702-21/usr/sbin/munin08:47:330
1267599350,33cyclictest15702-21/usr/sbin/munin08:47:330
1267599341,9cyclictest9782-21head09:57:350
1267599341,9cyclictest32679-21ntp_states10:57:390
1267599341,9cyclictest32679-21ntp_states10:57:390
1267599341,8cyclictest955-21tail08:07:360
1267599341,8cyclictest749-21runrttasks07:35:340
1267599341,8cyclictest749-21runrttasks07:35:340
1267599341,8cyclictest22756-21ntpq11:57:400
1267599341,8cyclictest22756-21ntpq11:57:400
1267599341,8cyclictest22756-21ntpq11:57:400
1267599341,8cyclictest19492-21sed10:22:360
1267599341,8cyclictest19492-21sed10:22:360
1267599341,3cyclictest0-21swapper/011:32:350
1267599341,3cyclictest0-21swapper/011:32:350
1267599341,11cyclictest21793-21cron11:57:200
12676993316,4cyclictest90-1pr/ttyS008:12:441
1267599331,7cyclictest4395-21sed09:42:370
1267599331,7cyclictest4395-21sed09:42:370
1267599331,7cyclictest4395-21sed09:42:370
1267599331,10cyclictest7244-21seq09:50:420
1267599331,10cyclictest7244-21seq09:50:420
252112320,2sleep20-21swapper/209:12:342
252112320,2sleep20-21swapper/209:12:342
252112320,2sleep20-21swapper/209:12:342
12676993226,4cyclictest20527-21latency_hist10:27:201
12676993226,4cyclictest20527-21latency_hist10:27:201
12676993222,8cyclictest31216-21latency_hist08:02:291
12676993218,2cyclictest181rcu_preempt12:22:221
12676993218,2cyclictest181rcu_preempt12:22:221
1267699315,6cyclictest281ktimers/112:34:461
1267699315,6cyclictest281ktimers/112:34:461
12676993125,5cyclictest13364-21netstat11:32:381
12676993125,5cyclictest13364-21netstat11:32:381
12676993124,5cyclictest12674-21cyclictest12:09:311
12676993124,5cyclictest12674-21cyclictest12:09:311
12676993124,5cyclictest12674-21cyclictest12:09:311
12676993122,7cyclictest9214-21threads08:27:441
12676993122,7cyclictest9214-21threads08:27:441
171192300,1sleep117271-21/usr/sbin/munin10:17:331
171192300,1sleep117271-21/usr/sbin/munin10:17:331
12676993024,4cyclictest11132-21gltestperf11:27:341
12676993024,4cyclictest11132-21gltestperf11:27:341
12676993023,5cyclictest16628-21gltestperf07:22:331
12676993015,2cyclictest181rcu_preempt09:47:341
12676993015,2cyclictest181rcu_preempt09:47:341
12676992920,7cyclictest7182-21fschecks_count11:17:331
12676992920,7cyclictest7182-21fschecks_count11:17:331
12676992914,2cyclictest181rcu_preempt11:47:361
12676992914,2cyclictest181rcu_preempt11:47:361
12676992914,2cyclictest181rcu_preempt11:47:361
12676992914,2cyclictest181rcu_preempt11:07:341
12676992914,2cyclictest181rcu_preempt11:07:341
12676992821,5cyclictest29438-21unixbench_singl10:47:421
12676992821,5cyclictest29438-21unixbench_singl10:47:421
12676992821,5cyclictest29438-21unixbench_singl10:47:421
12676992820,6cyclictest22155-21fschecks_count11:57:331
12676992820,6cyclictest22155-21fschecks_count11:57:331
12676992820,6cyclictest22155-21fschecks_count11:57:331
12676992815,3cyclictest181rcu_preempt08:47:381
12676992815,3cyclictest181rcu_preempt08:47:381
12676992815,2cyclictest181rcu_preempt08:07:351
12676992814,4cyclictest90-1pr/ttyS008:59:591
12676992814,3cyclictest181rcu_preempt10:52:401
12676992814,3cyclictest181rcu_preempt10:52:401
12676992814,3cyclictest181rcu_preempt10:52:401
12676992814,2cyclictest181rcu_preempt11:22:351
12676992814,2cyclictest181rcu_preempt11:22:351
12676992814,2cyclictest181rcu_preempt10:37:331
12676992814,2cyclictest181rcu_preempt10:37:331
12676992814,2cyclictest181rcu_preempt10:37:331
12676992814,2cyclictest181rcu_preempt10:32:331
12676992814,2cyclictest181rcu_preempt09:32:251
12676992814,2cyclictest181rcu_preempt09:32:251
12676992814,2cyclictest181rcu_preempt09:32:251
12676992813,5cyclictest90-1pr/ttyS012:27:301
12676992813,2cyclictest181rcu_preempt11:02:411
12676992813,2cyclictest181rcu_preempt11:02:411
12676992813,2cyclictest181rcu_preempt11:02:411
12676992811,4cyclictest271rcuc/110:13:401
12676992810,8cyclictest29-21ksoftirqd/108:04:481
12676992810,8cyclictest29-21ksoftirqd/108:04:481
181152270,3chrt0-21swapper/208:52:352
1267699275,4cyclictest281ktimers/108:52:381
12676992721,4cyclictest550-21cron11:12:321
12676992721,4cyclictest27403-21timerandwakeup10:42:421
12676992721,4cyclictest27403-21timerandwakeup10:42:421
12676992721,4cyclictest27403-21timerandwakeup10:42:421
12676992718,2cyclictest181rcu_preempt09:57:341
12676992714,2cyclictest181rcu_preempt10:27:411
12676992714,2cyclictest181rcu_preempt07:47:391
12676992713,7cyclictest90-1pr/ttyS009:07:231
12676992713,7cyclictest90-1pr/ttyS009:07:231
12676992713,2cyclictest181rcu_preempt09:52:351
12676992713,2cyclictest181rcu_preempt09:22:461
12676992713,2cyclictest181rcu_preempt09:22:461
12676992713,2cyclictest181rcu_preempt09:22:461
12676992711,3cyclictest181rcu_preempt08:22:441
12676992711,3cyclictest181rcu_preempt08:22:441
12676992711,3cyclictest181rcu_preempt08:22:441
1267699267,3cyclictest271rcuc/110:10:441
1267699267,3cyclictest271rcuc/110:10:441
1267699266,3cyclictest271rcuc/108:32:321
1267699266,3cyclictest271rcuc/108:32:321
1267699264,4cyclictest281ktimers/112:02:411
1267699264,4cyclictest281ktimers/112:02:411
12676992622,2cyclictest0-21swapper/112:32:201
12676992622,2cyclictest0-21swapper/112:32:201
12676992622,2cyclictest0-21swapper/112:32:201
1267699261,9cyclictest27316-21if_err_eth009:17:351
1267699261,9cyclictest27316-21if_err_eth009:17:351
12676992614,2cyclictest181rcu_preempt09:07:401
12676992614,2cyclictest181rcu_preempt09:07:401
12676992612,2cyclictest181rcu_preempt12:12:341
12676992612,2cyclictest181rcu_preempt12:12:341
12676992612,2cyclictest181rcu_preempt07:57:341
12676992612,12cyclictest281ktimers/109:44:301
12676992612,12cyclictest281ktimers/109:44:301
12676992612,12cyclictest281ktimers/109:44:301
12676992610,4cyclictest271rcuc/110:34:071
12676992610,4cyclictest271rcuc/110:34:071
188042250,3sleep20-21swapper/207:27:372
188042250,3sleep20-21swapper/207:27:372
1267699258,3cyclictest0-21swapper/110:02:371
1267699258,3cyclictest0-21swapper/110:02:371
12676992520,3cyclictest0-21swapper/107:52:431
12676992520,3cyclictest0-21swapper/107:52:431
12676992518,2cyclictest181rcu_preempt11:01:361
12676992518,2cyclictest181rcu_preempt11:01:361
12676992514,2cyclictest181rcu_preempt11:42:391
12676992514,2cyclictest181rcu_preempt11:42:391
12676992514,2cyclictest181rcu_preempt07:27:421
12676992514,2cyclictest181rcu_preempt07:27:421
12676992513,3cyclictest181rcu_preempt08:42:321
12676992513,3cyclictest181rcu_preempt08:42:321
12676992511,2cyclictest181rcu_preempt09:12:421
12676992511,2cyclictest181rcu_preempt09:12:421
12676992511,2cyclictest181rcu_preempt09:12:421
12676992510,2cyclictest181rcu_preempt12:37:311
1267699244,3cyclictest281ktimers/107:32:441
1267699244,3cyclictest281ktimers/107:32:441
12676992418,3cyclictest0-21swapper/111:52:371
12676992418,3cyclictest0-21swapper/111:52:371
12676992411,3cyclictest181rcu_preempt07:37:311
12676992411,3cyclictest181rcu_preempt07:37:311
12676992411,2cyclictest181rcu_preempt09:32:341
12676992411,2cyclictest181rcu_preempt09:32:341
222752230,3sleep20-21swapper/207:37:342
222752230,3sleep20-21swapper/207:37:342
12684992318,3cyclictest223642sleep307:37:363
12684992318,3cyclictest223642sleep307:37:363
12678992216,4cyclictest161852sleep211:42:212
12678992216,4cyclictest161852sleep211:42:212
12678992215,4cyclictest137732chrt11:32:432
12678992215,4cyclictest137732chrt11:32:432
1267899191,12cyclictest3683-21chrt08:12:432
85842180,3chrt0-21swapper/308:27:363
85842180,3chrt0-21swapper/308:27:363
1267899181,12cyclictest2016-21chrt11:02:362
1267899181,12cyclictest2016-21chrt11:02:362
1267899181,12cyclictest2016-21chrt11:02:362
1267899181,12cyclictest10893-21chrt11:27:322
1267899181,11cyclictest1247-21chrt09:32:432
1267899181,11cyclictest1247-21chrt09:32:432
251192170,3sleep30-21swapper/310:37:363
251192170,3sleep30-21swapper/310:37:363
251192170,3sleep30-21swapper/310:37:363
1268499171,13cyclictest21884-21chrt11:57:243
1268499171,13cyclictest21884-21chrt11:57:243
1268499171,11cyclictest16635-21chrt11:42:333
1268499171,11cyclictest16635-21chrt11:42:333
1267899171,10cyclictest21282-21taskset09:02:282
1267899163,11cyclictest0-21swapper/211:47:322
1267899163,11cyclictest0-21swapper/211:47:322
1267899162,11cyclictest0-21swapper/208:37:432
1267899161,11cyclictest29124-21taskset10:47:402
1267899161,11cyclictest29124-21taskset10:47:402
1267899161,11cyclictest29124-21taskset10:47:402
1267899161,11cyclictest22841-21taskset10:32:332
1267899161,11cyclictest22018-21taskset11:57:312
1267899161,11cyclictest22018-21taskset11:57:312
1267899161,11cyclictest22018-21taskset11:57:312
1267899161,11cyclictest17433-21taskset07:22:422
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1267899152,9cyclictest0-21swapper/208:07:352
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1267899151,11cyclictest24538-21chrt10:37:312
1267899151,11cyclictest24538-21chrt10:37:312
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1267899151,10cyclictest6193-21chrt08:22:242
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1267899151,10cyclictest6186-21chrt09:47:342
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1267899151,10cyclictest5348-21chrt12:37:392
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1267899151,10cyclictest23158-21taskset09:07:302
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1267899151,10cyclictest15922-21chrt08:47:322
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1267899151,10cyclictest14050-21chrt10:07:402
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1268499149,3cyclictest32592chrt09:37:553
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1268499149,3cyclictest119252chrt08:37:333
1268499142,9cyclictest5883-21chrt12:37:443
1268499142,10cyclictest0-21swapper/311:27:433
1268499142,10cyclictest0-21swapper/311:27:433
1268499141,9cyclictest2643-21taskset08:12:323
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