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2026-05-07 - 12:22

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 100 highest latencies:
System rackbslot5s.osadl.org (updated Thu May 07, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3114394995647,5cyclictest3171629-21cron21:55:012
3114394995119,29cyclictest3157773-21sh21:15:002
3114394995029,17cyclictest0-21swapper/220:40:022
3114390994937,9cyclictest231ktimers/121:00:141
3114390994720,23cyclictest0-21swapper/123:25:271
3114385994734,10cyclictest121ktimers/023:05:130
3114399994537,6cyclictest3160873-21kworker/u8:0+events_unbound22:21:053
3114399994436,5cyclictest3125153-21munin-plugin-st19:40:013
3114399994436,5cyclictest3125153-21munin-plugin-st19:40:003
3114394994319,20cyclictest0-21swapper/200:30:202
311439499431,11cyclictest3154362-21cron21:05:002
3114390994335,5cyclictest3183799-21munin-plugin-st22:30:001
3114390994333,7cyclictest0-21swapper/119:35:011
3114390994333,7cyclictest0-21swapper/119:35:011
3114390994314,26cyclictest3206557-21fschecks_count23:35:151
3114399994233,5cyclictest0-21swapper/322:30:263
311439099421,9cyclictest3175960-21/usr/sbin/munin22:05:211
311439099421,10cyclictest3151813-21/usr/sbin/munin20:55:221
3114385994231,8cyclictest121ktimers/023:55:130
3114385994228,10cyclictest121ktimers/020:50:130
3114399994130,6cyclictest0-21swapper/319:55:383
311439499419,6cyclictest3146298-21cut20:40:152
311439099413,35cyclictest3217734-21/usr/sbin/munin00:05:201
311439099411,9cyclictest3170991-21sed21:50:231
311439099411,8cyclictest3210141-21/usr/sbin/munin23:45:131
3114390994112,26cyclictest3168878-21ls21:45:181
3114385994132,7cyclictest121ktimers/019:20:120
3114399994030,7cyclictest391ktimers/323:20:113
311439499409,7cyclictest3217913-21wc00:05:232
3114394994016,19cyclictest0-21swapper/221:35:002
3114394994012,3cyclictest3141163-21fschecks_time20:25:162
311439499401,10cyclictest3208809-21find23:40:232
311439099401,8cyclictest3144468-21/usr/sbin/munin20:35:141
3114390994016,21cyclictest0-21swapper/119:25:271
3114390994010,27cyclictest204-21dbus-daemon22:11:021
3114390994010,27cyclictest204-21dbus-daemon22:11:021
3114385994033,4cyclictest3227217-21latency_hist00:35:000
311439499399,4cyclictest3223201-21unixbench_multi00:20:252
311439499397,9cyclictest3165378-21/usr/sbin/munin21:35:202
311439499397,7cyclictest1-21systemd22:21:032
311439499393,7cyclictest3161196-21cron21:25:002
311439499393,7cyclictest3161196-21cron21:25:002
3114394993931,4cyclictest3150947-21debian-sa120:55:002
3114394993929,7cyclictest3177985-21grep22:10:252
3114394993929,7cyclictest3177985-21grep22:10:242
311439499391,8cyclictest3161648-21cut21:25:162
311439499391,8cyclictest3161648-21cut21:25:152
311439499391,11cyclictest3116653-21fschecks_count19:15:042
311439499391,10cyclictest3188588-21sshd22:41:082
311439099399,28cyclictest3139933-21grep20:20:221
311439099399,27cyclictest3199752-21cut23:15:161
311439099391,9cyclictest3181091-21/usr/sbin/munin22:20:221
311439099391,8cyclictest3134676-21/usr/sbin/munin20:05:211
311439099391,8cyclictest3134676-21/usr/sbin/munin20:05:211
311439099391,8cyclictest3125607-21/usr/sbin/munin19:40:111
311439099391,7cyclictest3149663-21/usr/sbin/munin20:50:161
311439099391,6cyclictest3148858-21users20:45:281
3114399993828,6cyclictest3186729-21unixbench_multi22:35:243
311439499388,7cyclictest3119464-21cat19:20:242
3114394993831,4cyclictest0-21swapper/223:10:232
311439499381,9cyclictest3186757-21head22:35:242
311439499381,9cyclictest3169930-21cron21:50:012
311439499381,9cyclictest3114686-21grep19:10:152
3114394993815,3cyclictest3194475-21/usr/sbin/munin23:00:252
3114394993813,3cyclictest0-21swapper/220:05:422
3114394993813,3cyclictest0-21swapper/220:05:412
311439499381,11cyclictest3121339-21head19:25:282
311439499381,10cyclictest3131733-21unixbench_multi19:55:252
311439099381,9cyclictest3198721-21timerandwakeup23:10:211
3114390993819,15cyclictest0-21swapper/120:40:141
311439099381,8cyclictest3184613-21/usr/sbin/munin22:30:221
311439099381,8cyclictest3155169-21/usr/sbin/munin21:05:221
311439099381,7cyclictest3208795-21/usr/sbin/munin23:40:221
311439099381,7cyclictest3164169-21awk21:30:241
311439099381,7cyclictest3123800-21/usr/sbin/munin19:35:151
311439099381,7cyclictest3123800-21/usr/sbin/munin19:35:151
311439099381,7cyclictest3114664-21/usr/sbin/munin19:10:151
311439099381,6cyclictest3228116-21/usr/sbin/munin00:35:231
311439099381,6cyclictest3194589-21/usr/sbin/munin23:00:141
311439099381,5cyclictest3172318-21meminfo21:55:211
311439099381,4cyclictest3158122-21/usr/sbin/munin21:15:141
3114385993830,4cyclictest3219823-21grep00:10:240
3114385993829,5cyclictest0-21swapper/021:20:010
311439499379,5cyclictest0-21swapper/200:00:012
311439499371,8cyclictest3207462-21head23:35:242
3114394993712,3cyclictest0-21swapper/220:10:152
311439499371,14cyclictest3125151-21sh19:40:002
311439499371,14cyclictest3125151-21sh19:40:002
311439499371,11cyclictest3151628-21meminfo20:55:182
311439499371,10cyclictest3193815-21grep22:55:262
311439099373,6cyclictest3225955-21irqstats00:30:171
311439099371,9cyclictest3196297-21df_inode23:05:151
311439099371,9cyclictest3136396-21ntp_states20:10:201
311439099371,9cyclictest3130080-21users19:50:241
311439099371,8cyclictest3201401-21/usr/sbin/munin23:20:141
311439099371,7cyclictest3138126-21/usr/sbin/munin20:15:241
311439099371,6cyclictest3214000-21ntp_states23:55:211
311439099371,6cyclictest3142790-21/usr/sbin/munin20:30:151
311439099371,6cyclictest3132664-21/usr/sbin/munin20:00:151
311439099371,5cyclictest3165316-21/usr/sbin/munin21:35:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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