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2026-04-22 - 01:05

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 Tue Apr 21, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1259821430,5sleep112601-21unixbench-2d10:52:271
1259821430,5sleep112601-21unixbench-2d10:52:271
2509021030,3sleep30-21swapper/308:32:283
2509021030,3sleep30-21swapper/308:32:283
93592940,3chrt0-21swapper/107:52:181
93592940,3chrt0-21swapper/107:52:181
172322920,3sleep10-21swapper/108:12:241
172322920,3sleep10-21swapper/108:12:241
226542710,3sleep022648-21gzip08:27:220
226542710,3sleep022648-21gzip08:27:220
161332660,2sleep016138-21tail09:37:170
161332660,2sleep016138-21tail09:37:170
161332660,2sleep016138-21tail09:37:170
251922630,3chrt0-21swapper/211:27:222
251922630,3chrt0-21swapper/211:27:222
131922610,3sleep00-21swapper/010:57:090
131922610,3sleep00-21swapper/010:57:090
103592550,3chrt0-21swapper/010:47:240
103592550,3chrt0-21swapper/010:47:240
277022530,3chrt0-21swapper/208:42:162
277022530,3chrt0-21swapper/208:42:162
277022530,3chrt0-21swapper/208:42:162
325732510,2sleep20-21swapper/210:22:132
325732510,2sleep20-21swapper/210:22:132
275292490,3sleep20-21swapper/210:07:182
275292490,3sleep20-21swapper/210:07:182
226432450,1sleep00-21swapper/011:22:130
226432450,1sleep00-21swapper/011:22:130
143392440,4sleep20-21swapper/209:32:182
143392440,4sleep20-21swapper/209:32:182
103122440,3sleep20-21swapper/209:22:162
103122440,3sleep20-21swapper/209:22:162
26573994233,7cyclictest29919-21latency_hist11:42:031
26573994233,7cyclictest29919-21latency_hist11:42:031
26567994035,4cyclictest8069-21cut10:42:180
26567994035,4cyclictest8069-21cut10:42:180
299322380,2sleep130041-21/usr/sbin/munin08:47:181
299322380,2sleep130041-21/usr/sbin/munin08:47:181
91832370,3sleep20-21swapper/209:17:252
91832370,3sleep20-21swapper/209:17:252
326122360,3sleep30-21swapper/310:22:143
26573993627,7cyclictest6204-21latency_hist09:12:031
26573993627,7cyclictest6204-21latency_hist09:12:031
26567993630,5cyclictest6111-21fschecks_time10:37:190
26567993630,5cyclictest6111-21fschecks_time10:37:190
26567993630,5cyclictest6111-21fschecks_time10:37:190
208772360,2sleep121005-21fschecks_time11:17:171
208772360,2sleep121005-21fschecks_time11:17:171
208772360,2sleep121005-21fschecks_time11:17:171
145522360,3sleep20-21swapper/208:07:142
145522360,3sleep20-21swapper/208:07:142
26567993428,5cyclictest30634-21kernelversion11:42:180
26567993428,5cyclictest30634-21kernelversion11:42:180
102802340,2chrt0-21swapper/109:22:151
305832330,2sleep20-21swapper/211:42:172
305832330,2sleep20-21swapper/211:42:172
26567993328,3cyclictest0-21swapper/009:52:030
26567993328,3cyclictest0-21swapper/009:52:030
26567993328,3cyclictest0-21swapper/009:52:030
26567993327,4cyclictest0-21swapper/008:07:200
26567993327,4cyclictest0-21swapper/008:07:200
279132320,1sleep00-21swapper/010:07:240
279132320,1sleep00-21swapper/010:07:240
26573993217,4cyclictest700-21192.168.115.40-manager11:28:091
26573993217,4cyclictest700-21192.168.115.40-manager11:28:091
26567993226,4cyclictest0-21swapper/009:32:140
26567993226,4cyclictest0-21swapper/009:32:140
26567993226,4cyclictest0-21swapper/008:22:040
26567993226,4cyclictest0-21swapper/008:22:040
26567993225,5cyclictest17899-21fschecks_time09:42:160
26567993225,5cyclictest17899-21fschecks_time09:42:160
26567993225,5cyclictest11259-21kernelversion07:57:190
26567993225,5cyclictest11259-21kernelversion07:57:190
239602320,3sleep00-21swapper/008:32:170
239602320,3sleep00-21swapper/008:32:170
26567993126,3cyclictest0-21swapper/011:32:170
26567993124,5cyclictest14902-21gltestperf12:27:190
26567993124,5cyclictest14902-21gltestperf12:27:190
26567993124,5cyclictest14902-21gltestperf12:27:190
182882310,2sleep20-21swapper/211:07:282
182882310,2sleep20-21swapper/211:07:282
26573993023,5cyclictest5617-21latency_hist10:37:041
26573993023,5cyclictest5617-21latency_hist10:37:041
26567993026,2cyclictest0-21swapper/008:02:170
26567993026,2cyclictest0-21swapper/008:02:170
26567993026,2cyclictest0-21swapper/008:02:170
26567993025,3cyclictest10887-21sh12:17:150
26567993025,3cyclictest10887-21sh12:17:150
26567993024,4cyclictest0-21swapper/011:42:030
26567993024,4cyclictest0-21swapper/011:42:030
26567993023,5cyclictest965-21sshd11:48:210
26567993023,5cyclictest965-21sshd11:48:210
26567993023,5cyclictest965-21sshd11:48:210
26567993023,5cyclictest18774-21latency_hist11:12:080
26567993023,5cyclictest18774-21latency_hist11:12:080
26567993022,6cyclictest30723-21/usr/sbin/munin10:17:210
26567993022,6cyclictest30723-21/usr/sbin/munin10:17:210
26567993017,11cyclictest0-21swapper/011:32:160
26573992924,3cyclictest12465-21cron12:22:041
26573992924,3cyclictest12465-21cron12:22:041
26573992923,4cyclictest1648-21ntpd10:12:211
26573992923,4cyclictest1648-21ntpd10:12:211
26573992921,6cyclictest27701-21netstat10:07:211
26573992921,6cyclictest27701-21netstat10:07:211
26567992923,4cyclictest29244-21latency_hist08:47:030
26567992923,4cyclictest29244-21latency_hist08:47:030
26567992923,4cyclictest29244-21latency_hist08:47:030
26567992922,5cyclictest25943-21sshd11:29:210
239922290,1sleep00-21swapper/009:57:230
239922290,1sleep00-21swapper/009:57:230
26573992823,3cyclictest0-21swapper/112:42:041
26573992823,3cyclictest0-21swapper/112:42:041
26573992823,3cyclictest0-21swapper/112:42:041
26573992822,5cyclictest26557-21cyclictest10:06:151
26573992822,5cyclictest26557-21cyclictest10:06:151
26573992822,5cyclictest26557-21cyclictest10:06:151
26573992822,4cyclictest26557-21cyclictest07:32:191
26573992822,4cyclictest26557-21cyclictest07:32:191
26573992821,5cyclictest16774-21runrttasks09:37:251
26573992821,5cyclictest16774-21runrttasks09:37:251
26573992821,5cyclictest16774-21runrttasks09:37:251
26573992821,5cyclictest1299-21latency_hist11:52:051
26573992821,5cyclictest1299-21latency_hist11:52:051
26573992821,5cyclictest1299-21latency_hist11:52:051
26573992818,8cyclictest14154-21fschecks_time09:32:151
26567992824,2cyclictest0-21swapper/012:02:260
26567992824,2cyclictest0-21swapper/012:02:260
26567992824,2cyclictest0-21swapper/012:02:260
26567992823,3cyclictest0-21swapper/008:37:200
26567992823,3cyclictest0-21swapper/008:37:200
26567992821,5cyclictest30692-21latency_hist10:17:120
26567992821,5cyclictest30692-21latency_hist10:17:120
26573992722,4cyclictest572-21cups-browsed07:42:261
26573992722,4cyclictest572-21cups-browsed07:42:261
26573992722,4cyclictest572-21cups-browsed07:42:261
26573992722,4cyclictest142-21systemd-journal08:57:221
26573992722,4cyclictest142-21systemd-journal08:57:221
26573992721,5cyclictest20545-21latency_hist11:17:031
26573992721,4cyclictest14290-21idleruntime-cro08:07:041
26573992721,4cyclictest14290-21idleruntime-cro08:07:041
26573992721,4cyclictest14290-21idleruntime-cro08:07:041
26573992720,5cyclictest575-21thd11:57:271
26573992720,5cyclictest575-21thd11:57:271
26573992720,5cyclictest575-21thd11:57:271
26573992719,5cyclictest25636-21latency_hist08:37:101
26573992719,5cyclictest25636-21latency_hist08:37:101
26573992713,3cyclictest700-21192.168.115.40-manager09:13:151
26573992713,3cyclictest700-21192.168.115.40-manager09:13:151
26567992723,3cyclictest8693-21latency_hist07:52:040
26567992723,3cyclictest8693-21latency_hist07:52:040
26567992723,2cyclictest0-21swapper/012:42:040
26567992723,2cyclictest0-21swapper/012:42:040
26567992723,2cyclictest0-21swapper/012:42:040
26567992723,2cyclictest0-21swapper/009:07:270
26567992723,2cyclictest0-21swapper/009:07:270
26567992722,3cyclictest0-21swapper/007:52:250
26567992722,3cyclictest0-21swapper/007:52:250
26567992721,5cyclictest572-21cups-browsed09:32:230
26567992721,5cyclictest572-21cups-browsed09:32:230
26567992721,4cyclictest1-21systemd10:02:210
26567992721,4cyclictest1-21systemd10:02:210
26567992721,4cyclictest1-21systemd10:02:210
26567992720,5cyclictest31486-21cut08:52:160
26567992720,5cyclictest31486-21cut08:52:160
26567992720,5cyclictest10117-21latency_hist09:22:100
26567992720,5cyclictest10117-21latency_hist09:22:100
26573992622,2cyclictest0-21swapper/107:27:221
26573992621,3cyclictest8600-21gltestperf09:17:171
26573992620,5cyclictest319-21fschecks_count10:22:161
26573992620,5cyclictest142-21systemd-journal09:33:201
26573992620,5cyclictest142-21systemd-journal09:33:201
26573992620,4cyclictest30437-21sed07:22:171
26573992620,4cyclictest30437-21sed07:22:171
26573992620,4cyclictest19309-21latency_hist09:47:041
26573992620,4cyclictest19309-21latency_hist09:47:041
26573992620,4cyclictest0-21swapper/108:42:031
26573992620,4cyclictest0-21swapper/108:42:031
26573992619,5cyclictest27779-21fschecks_count08:42:171
26573992619,5cyclictest27779-21fschecks_count08:42:171
26573992619,5cyclictest27779-21fschecks_count08:42:171
26573992619,5cyclictest26557-21cyclictest11:45:311
26573992619,5cyclictest26557-21cyclictest11:45:311
26573992619,5cyclictest26557-21cyclictest09:58:511
26573992619,5cyclictest26557-21cyclictest09:58:511
26573992619,5cyclictest26557-21cyclictest09:02:191
26573992619,5cyclictest26557-21cyclictest09:02:191
26573992618,6cyclictest2315-21fschecks_time10:27:171
26573992618,6cyclictest2315-21fschecks_time10:27:171
26567992622,2cyclictest0-21swapper/007:22:260
26567992622,2cyclictest0-21swapper/007:22:260
26567992621,3cyclictest0-21swapper/012:12:030
26567992621,3cyclictest0-21swapper/012:12:030
26567992621,3cyclictest0-21swapper/012:12:030
26567992620,4cyclictest4445-21unixbench-2d07:37:260
26567992620,4cyclictest4445-21unixbench-2d07:37:260
26567992620,4cyclictest4445-21unixbench-2d07:37:260
26567992620,4cyclictest0-21swapper/011:22:170
26567992620,4cyclictest0-21swapper/011:22:170
26567992620,4cyclictest0-21swapper/011:22:170
26567992619,5cyclictest550-21cron09:52:170
26567992619,5cyclictest550-21cron09:52:170
26567992619,5cyclictest3725-21gltestperf11:57:230
26567992619,5cyclictest3725-21gltestperf11:57:230
26567992619,5cyclictest3725-21gltestperf11:57:230
239142260,3sleep20-21swapper/209:57:212
239142260,3sleep20-21swapper/209:57:212
26573992520,3cyclictest0-21swapper/110:47:161
26573992520,3cyclictest0-21swapper/109:47:171
26573992520,3cyclictest0-21swapper/109:47:171
26573992520,3cyclictest0-21swapper/109:47:171
26573992519,4cyclictest0-21swapper/112:32:251
26573992519,4cyclictest0-21swapper/112:32:251
26573992518,5cyclictest7246-21fschecks_time07:47:181
26573992518,5cyclictest7246-21fschecks_time07:47:181
26573992518,5cyclictest26557-21cyclictest07:38:291
26573992518,5cyclictest26557-21cyclictest07:38:291
26573992518,5cyclictest26557-21cyclictest07:38:291
26573992518,5cyclictest22120-21fschecks_count08:27:171
26573992518,5cyclictest22120-21fschecks_count08:27:171
26573992518,5cyclictest20290-21fschecks_count08:22:151
26573992518,5cyclictest20290-21fschecks_count08:22:151
26573992517,6cyclictest12444-21awk08:02:031
26573992517,6cyclictest12444-21awk08:02:031
26567992521,2cyclictest0-21swapper/010:27:220
26567992521,2cyclictest0-21swapper/010:27:220
26567992520,4cyclictest32599-21head07:27:210
26567992520,3cyclictest2470-21switchtime11:52:260
26567992520,3cyclictest2470-21switchtime11:52:260
26567992518,5cyclictest20609-21kernelversion08:22:180
26567992518,5cyclictest20609-21kernelversion08:22:180
26567992517,6cyclictest16713-21tune2fs12:32:170
26567992517,6cyclictest16713-21tune2fs12:32:170
2657399247,3cyclictest0-21swapper/110:42:071
2657399247,3cyclictest0-21swapper/110:42:071
2657399247,3cyclictest0-21swapper/110:42:071
26573992420,3cyclictest26557-21cyclictest11:25:521
26573992420,3cyclictest26557-21cyclictest11:25:521
26573992420,3cyclictest26557-21cyclictest11:25:521
26573992419,2cyclictest0-21swapper/108:07:171
26573992419,2cyclictest0-21swapper/108:07:171
26573992418,4cyclictest7934-21fschecks_time10:42:181
26573992418,4cyclictest26557-21cyclictest11:33:141
26573992418,4cyclictest0-21swapper/110:47:191
26573992418,4cyclictest0-21swapper/110:47:191
26573992417,5cyclictest22095-21ntp_kernel_err09:52:221
26573992417,5cyclictest22095-21ntp_kernel_err09:52:221
26573992416,6cyclictest30739-21cpu10:17:141
26573992416,6cyclictest30739-21cpu10:17:141
26573992415,7cyclictest10429-21fschecks_time09:22:161
26573992415,7cyclictest10429-21fschecks_time09:22:161
2657399241,3cyclictest181rcu_preempt08:20:041
2657399241,3cyclictest181rcu_preempt08:20:041
26567992420,3cyclictest26557-21cyclictest12:17:260
26567992420,3cyclictest26557-21cyclictest12:17:260
26567992420,2cyclictest0-21swapper/010:22:210
26567992420,2cyclictest0-21swapper/007:32:180
26567992420,2cyclictest0-21swapper/007:32:180
26567992418,4cyclictest21676-21sendmail_mailtr11:17:250
26567992418,4cyclictest0-21swapper/010:32:250
26567992418,4cyclictest0-21swapper/010:32:250
26567992418,3cyclictest0-21swapper/011:07:160
26567992417,5cyclictest6819-21latency_hist07:47:040
26567992417,5cyclictest6819-21latency_hist07:47:040
26567992417,5cyclictest6819-21latency_hist07:47:040
26567992417,5cyclictest2669-21latency_hist09:02:120
26567992417,5cyclictest2669-21latency_hist09:02:120
26573992318,4cyclictest7288-21fschecks_time12:07:171
26573992318,4cyclictest7288-21fschecks_time12:07:171
26573992316,5cyclictest31950-21missed_timers08:52:191
26573992316,5cyclictest31950-21missed_timers08:52:191
26573992312,9cyclictest17031-21sort11:07:151
26573992312,9cyclictest17031-21sort11:07:151
26567992319,2cyclictest0-21swapper/011:02:170
26567992319,2cyclictest0-21swapper/010:58:380
26567992319,2cyclictest0-21swapper/010:58:380
26567992319,2cyclictest0-21swapper/009:02:240
26567992319,2cyclictest0-21swapper/009:02:240
26567992317,4cyclictest0-21swapper/012:22:190
26567992317,4cyclictest0-21swapper/012:22:190
26567992317,4cyclictest0-21swapper/012:22:190
26573992217,3cyclictest21063-21kworker/u9:0-rpciod11:12:051
26573992217,3cyclictest21063-21kworker/u9:0-rpciod11:12:051
26573992216,4cyclictest15043-21latency_hist11:02:071
26573992216,4cyclictest15043-21latency_hist11:02:071
26573992213,7cyclictest15998-21sshd12:29:201
26573992213,7cyclictest15998-21sshd12:29:201
26573992213,7cyclictest15998-21sshd12:29:201
26573992213,7cyclictest142-21systemd-journal12:07:041
26567992217,3cyclictest0-21swapper/011:12:230
26567992216,4cyclictest0-21swapper/009:22:260
26567992216,4cyclictest0-21swapper/009:22:260
26567992216,4cyclictest0-21swapper/008:12:240
26567992216,4cyclictest0-21swapper/008:12:240
26567992212,8cyclictest142-21systemd-journal09:12:140
26567992212,8cyclictest142-21systemd-journal09:12:140
26573992113,6cyclictest8215-21sort12:07:261
26573992113,6cyclictest8215-21sort12:07:261
26573992113,6cyclictest8215-21sort12:07:261
26567992114,5cyclictest30474-21threads08:47:250
26567992114,5cyclictest30474-21threads08:47:250
2657399206,12cyclictest142-21systemd-journal12:14:251
2657399206,12cyclictest142-21systemd-journal12:14:251
26573992015,3cyclictest0-21swapper/111:52:271
26573992015,3cyclictest0-21swapper/111:52:271
26573992015,3cyclictest0-21swapper/109:27:181
175442200,3sleep30-21swapper/312:32:273
175442200,3sleep30-21swapper/312:32:273
26573991912,4cyclictest0-21swapper/112:22:261
26573991912,4cyclictest0-21swapper/112:22:261
26573991912,4cyclictest0-21swapper/112:22:261
319442180,3sleep20-21swapper/207:27:142
26588991811,5cyclictest15927-21chrt11:02:223
26588991811,5cyclictest15927-21chrt11:02:223
2658899181,12cyclictest29248-21chrt08:47:033
2658899181,12cyclictest29248-21chrt08:47:033
2658899181,12cyclictest29248-21chrt08:47:033
26582991813,3cyclictest351rcuc/212:33:022
26582991813,3cyclictest351rcuc/212:33:022
72132170,2sleep30-21swapper/307:47:173
72132170,2sleep30-21swapper/307:47:173
70212170,3sleep30-21swapper/309:12:203
70212170,3sleep30-21swapper/309:12:203
2658899171,12cyclictest13089-21chrt12:22:183
2658899171,12cyclictest13089-21chrt12:22:183
2658899171,12cyclictest13089-21chrt12:22:183
2658899171,12cyclictest0-21swapper/308:12:143
2658899171,12cyclictest0-21swapper/308:12:143
2658899171,12cyclictest0-21swapper/307:27:143
2658899171,11cyclictest0-21swapper/308:02:163
2658899171,11cyclictest0-21swapper/308:02:163
2658899171,11cyclictest0-21swapper/308:02:163
26582991711,4cyclictest303072sleep207:22:162
2658299171,13cyclictest18323-21chrt08:17:152
2658299171,13cyclictest18323-21chrt08:17:152
2658899167,6cyclictest27362-21chrt11:32:253
2658899162,9cyclictest0-21swapper/310:17:193
2658899162,11cyclictest0-21swapper/311:22:203
2658899162,11cyclictest0-21swapper/311:22:203
2658899162,11cyclictest0-21swapper/311:22:203
2658899162,11cyclictest0-21swapper/310:27:273
2658899162,11cyclictest0-21swapper/310:27:273
2658899161,11cyclictest20219-21chrt09:47:213
2658899161,11cyclictest20219-21chrt09:47:213
2658899161,11cyclictest20219-21chrt09:47:213
2658899161,11cyclictest14407-21chrt09:32:183
2658899161,11cyclictest14407-21chrt09:32:183
2658899161,11cyclictest11683-21chrt10:52:173
2658899161,11cyclictest11683-21chrt10:52:173
2658899161,11cyclictest0-21swapper/311:42:153
2658899161,11cyclictest0-21swapper/311:42:153
2658899161,11cyclictest0-21swapper/310:27:043
2658899161,11cyclictest0-21swapper/309:17:273
2658899161,11cyclictest0-21swapper/309:17:273
2658899161,10cyclictest9659-21chrt10:47:153
2658899161,10cyclictest9659-21chrt10:47:153
2658899161,10cyclictest23673-21taskset09:57:183
2658899161,10cyclictest23673-21taskset09:57:183
2658899161,10cyclictest0-21swapper/310:37:173
2658899161,10cyclictest0-21swapper/310:37:173
2658899161,10cyclictest0-21swapper/310:37:173
2658899160,12cyclictest22837-21chrt08:27:253
2658899160,12cyclictest22837-21chrt08:27:253
2658299163,9cyclictest0-21swapper/212:39:212
2658299163,9cyclictest0-21swapper/212:39:212
2658299163,9cyclictest0-21swapper/212:39:212
2658299163,9cyclictest0-21swapper/210:02:212
2658299163,9cyclictest0-21swapper/210:02:212
2658299163,9cyclictest0-21swapper/210:02:212
26582991612,3cyclictest351rcuc/210:49:362
26582991612,3cyclictest351rcuc/210:49:362
26582991612,3cyclictest351rcuc/207:50:272
26582991612,3cyclictest351rcuc/207:50:272
26582991611,3cyclictest0-21swapper/211:00:082
26582991611,3cyclictest0-21swapper/211:00:082
2658299161,10cyclictest19439-21chrt09:47:122
2658299161,10cyclictest19439-21chrt09:47:122
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